]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
collision brush generation in q3bsp is now *MUCH* faster and uses a lot less memory...
[xonotic/darkplaces.git] / model_brush.c
index d5fe31f9b9eba5e0211f5e582f5bdf977af8d6bb..19aaf6aa9386f5023c861bebfee56baa4c9ea607 100644 (file)
@@ -19,10 +19,14 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "quakedef.h"
+#include "image.h"
+#include "r_shadow.h"
+#include "winding.h"
+#include "curves.h"
 
 // note: model_shared.c sets up r_notexture, and r_surf_notexture
 
-qbyte mod_novis[(MAX_MAP_LEAFS + 7)/ 8];
+qbyte mod_q1bsp_novis[(MAX_MAP_LEAFS + 7)/ 8];
 
 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128"};
 cvar_t halflifebsp = {0, "halflifebsp", "0"};
@@ -30,18 +34,11 @@ cvar_t r_novis = {0, "r_novis", "0"};
 cvar_t r_miplightmaps = {CVAR_SAVE, "r_miplightmaps", "0"};
 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1"};
 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0"};
-cvar_t r_sortsurfaces = {0, "r_sortsurfaces", "0"};
+cvar_t mod_q3bsp_curves_subdivide_level = {0, "mod_q3bsp_curves_subdivide_level", "2"};
+cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1"};
+cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1"};
 
-#define NUM_DETAILTEXTURES 1
-static rtexture_t *detailtextures[NUM_DETAILTEXTURES];
-static rtexturepool_t *detailtexturepool;
-
-/*
-===============
-Mod_BrushInit
-===============
-*/
-void Mod_BrushInit (void)
+void Mod_BrushInit(void)
 {
 //     Cvar_RegisterVariable(&r_subdivide_size);
        Cvar_RegisterVariable(&halflifebsp);
@@ -49,65 +46,13 @@ void Mod_BrushInit (void)
        Cvar_RegisterVariable(&r_miplightmaps);
        Cvar_RegisterVariable(&r_lightmaprgba);
        Cvar_RegisterVariable(&r_nosurftextures);
-       Cvar_RegisterVariable(&r_sortsurfaces);
-       memset(mod_novis, 0xff, sizeof(mod_novis));
-}
-
-void Mod_BrushStartup (void)
-{
-       int i, x, y, light;
-       float vc[3], vx[3], vy[3], vn[3], lightdir[3];
-#define DETAILRESOLUTION 256
-       qbyte data[DETAILRESOLUTION][DETAILRESOLUTION][4], noise[DETAILRESOLUTION][DETAILRESOLUTION];
-       detailtexturepool = R_AllocTexturePool();
-       lightdir[0] = 0.5;
-       lightdir[1] = 1;
-       lightdir[2] = -0.25;
-       VectorNormalize(lightdir);
-       for (i = 0;i < NUM_DETAILTEXTURES;i++)
-       {
-               fractalnoise(&noise[0][0], DETAILRESOLUTION, DETAILRESOLUTION >> 4);
-               for (y = 0;y < DETAILRESOLUTION;y++)
-               {
-                       for (x = 0;x < DETAILRESOLUTION;x++)
-                       {
-                               vc[0] = x;
-                               vc[1] = y;
-                               vc[2] = noise[y][x] * (1.0f / 32.0f);
-                               vx[0] = x + 1;
-                               vx[1] = y;
-                               vx[2] = noise[y][(x + 1) % DETAILRESOLUTION] * (1.0f / 32.0f);
-                               vy[0] = x;
-                               vy[1] = y + 1;
-                               vy[2] = noise[(y + 1) % DETAILRESOLUTION][x] * (1.0f / 32.0f);
-                               VectorSubtract(vx, vc, vx);
-                               VectorSubtract(vy, vc, vy);
-                               CrossProduct(vx, vy, vn);
-                               VectorNormalize(vn);
-                               light = 128 - DotProduct(vn, lightdir) * 128;
-                               light = bound(0, light, 255);
-                               data[y][x][0] = data[y][x][1] = data[y][x][2] = light;
-                               data[y][x][3] = 255;
-                       }
-               }
-               detailtextures[i] = R_LoadTexture(detailtexturepool, va("detailtexture%i", i), DETAILRESOLUTION, DETAILRESOLUTION, &data[0][0][0], TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_PRECACHE);
-       }
-}
-
-void Mod_BrushShutdown (void)
-{
-       int i;
-       for (i = 0;i < NUM_DETAILTEXTURES;i++)
-               R_FreeTexture(detailtextures[i]);
-       R_FreeTexturePool(&detailtexturepool);
+       Cvar_RegisterVariable(&mod_q3bsp_curves_subdivide_level);
+       Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
+       Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
+       memset(mod_q1bsp_novis, 0xff, sizeof(mod_q1bsp_novis));
 }
 
-/*
-===============
-Mod_PointInLeaf
-===============
-*/
-mleaf_t *Mod_PointInLeaf (const vec3_t p, model_t *model)
+static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 {
        mnode_t *node;
 
@@ -118,14 +63,73 @@ mleaf_t *Mod_PointInLeaf (const vec3_t p, model_t *model)
 
        // LordHavoc: modified to start at first clip node,
        // in other words: first node of the (sub)model
-       node = model->nodes + model->hulls[0].firstclipnode;
+       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
        while (node->contents == 0)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct (p,node->plane->normal)) < node->plane->dist];
+               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 
        return (mleaf_t *)node;
 }
 
-int Mod_PointContents (const vec3_t p, model_t *model)
+static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, qbyte *out, int outsize)
+{
+       int i;
+       mleaf_t *leaf;
+       leaf = Mod_Q1BSP_PointInLeaf(model, p);
+       if (leaf)
+       {
+               i = min(outsize, (int)sizeof(leaf->ambient_sound_level));;
+               if (i)
+               {
+                       memcpy(out, leaf->ambient_sound_level, i);
+                       out += i;
+                       outsize -= i;
+               }
+       }
+       if (outsize)
+               memset(out, 0, outsize);
+}
+
+
+static int Mod_Q1BSP_BoxTouchingPVS_RecursiveBSPNode(const model_t *model, const mnode_t *node, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+{
+       int leafnum;
+loc0:
+       if (node->contents < 0)
+       {
+               // leaf
+               if (node->contents == CONTENTS_SOLID)
+                       return false;
+               leafnum = (mleaf_t *)node - model->brushq1.leafs - 1;
+               return pvs[leafnum >> 3] & (1 << (leafnum & 7));
+       }
+
+       // node - recurse down the BSP tree
+       switch (BoxOnPlaneSide(mins, maxs, node->plane))
+       {
+       case 1: // front
+               node = node->children[0];
+               goto loc0;
+       case 2: // back
+               node = node->children[1];
+               goto loc0;
+       default: // crossing
+               if (node->children[0]->contents != CONTENTS_SOLID)
+                       if (Mod_Q1BSP_BoxTouchingPVS_RecursiveBSPNode(model, node->children[0], pvs, mins, maxs))
+                               return true;
+               node = node->children[1];
+               goto loc0;
+       }
+       // never reached
+       return false;
+}
+
+int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+{
+       return Mod_Q1BSP_BoxTouchingPVS_RecursiveBSPNode(model, model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode, pvs, mins, maxs);
+}
+
+/*
+static int Mod_Q1BSP_PointContents(model_t *model, const vec3_t p)
 {
        mnode_t *node;
 
@@ -136,111 +140,635 @@ int Mod_PointContents (const vec3_t p, model_t *model)
 
        // LordHavoc: modified to start at first clip node,
        // in other words: first node of the (sub)model
-       node = model->nodes + model->hulls[0].firstclipnode;
+       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
        while (node->contents == 0)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct (p,node->plane->normal)) < node->plane->dist];
+               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 
        return ((mleaf_t *)node)->contents;
 }
+*/
 
-void Mod_FindNonSolidLocation(vec3_t pos, model_t *mod)
+typedef struct findnonsolidlocationinfo_s
 {
-       if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[0]-=1;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[0]+=2;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[0]-=1;
-       pos[1]-=1;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[1]+=2;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[1]-=1;
-       pos[2]-=1;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[2]+=2;if (Mod_PointContents(pos, mod) != CONTENTS_SOLID) return;
-       pos[2]-=1;
+       vec3_t center;
+       vec_t radius;
+       vec3_t nudge;
+       vec_t bestdist;
+       model_t *model;
 }
+findnonsolidlocationinfo_t;
 
-
-/*
-===================
-Mod_DecompressVis
-===================
-*/
-static qbyte *Mod_DecompressVis (qbyte *in, model_t *model)
+#if 0
+extern cvar_t samelevel;
+#endif
+static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 {
-       static qbyte decompressed[MAX_MAP_LEAFS/8];
-       int c;
-       qbyte *out;
-       int row;
+       int i, surfnum, k, *tri, *mark;
+       float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
+#if 0
+       float surfnormal[3];
+#endif
+       msurface_t *surf;
+       for (surfnum = 0, mark = leaf->firstmarksurface;surfnum < leaf->nummarksurfaces;surfnum++, mark++)
+       {
+               surf = info->model->brushq1.surfaces + *mark;
+               if (surf->flags & SURF_SOLIDCLIP)
+               {
+#if 0
+                       VectorCopy(surf->plane->normal, surfnormal);
+                       if (surf->flags & SURF_PLANEBACK)
+                               VectorNegate(surfnormal, surfnormal);
+#endif
+                       for (k = 0;k < surf->mesh.num_triangles;k++)
+                       {
+                               tri = surf->mesh.data_element3i + k * 3;
+                               VectorCopy((surf->mesh.data_vertex3f + tri[0] * 3), vert[0]);
+                               VectorCopy((surf->mesh.data_vertex3f + tri[1] * 3), vert[1]);
+                               VectorCopy((surf->mesh.data_vertex3f + tri[2] * 3), vert[2]);
+                               VectorSubtract(vert[1], vert[0], edge[0]);
+                               VectorSubtract(vert[2], vert[1], edge[1]);
+                               CrossProduct(edge[1], edge[0], facenormal);
+                               if (facenormal[0] || facenormal[1] || facenormal[2])
+                               {
+                                       VectorNormalize(facenormal);
+#if 0
+                                       if (VectorDistance(facenormal, surfnormal) > 0.01f)
+                                               Con_Printf("a2! %f %f %f != %f %f %f\n", facenormal[0], facenormal[1], facenormal[2], surfnormal[0], surfnormal[1], surfnormal[2]);
+#endif
+                                       f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
+                                       if (f <= info->bestdist && f >= -info->bestdist)
+                                       {
+                                               VectorSubtract(vert[0], vert[2], edge[2]);
+                                               VectorNormalize(edge[0]);
+                                               VectorNormalize(edge[1]);
+                                               VectorNormalize(edge[2]);
+                                               CrossProduct(facenormal, edge[0], edgenormal[0]);
+                                               CrossProduct(facenormal, edge[1], edgenormal[1]);
+                                               CrossProduct(facenormal, edge[2], edgenormal[2]);
+#if 0
+                                               if (samelevel.integer & 1)
+                                                       VectorNegate(edgenormal[0], edgenormal[0]);
+                                               if (samelevel.integer & 2)
+                                                       VectorNegate(edgenormal[1], edgenormal[1]);
+                                               if (samelevel.integer & 4)
+                                                       VectorNegate(edgenormal[2], edgenormal[2]);
+                                               for (i = 0;i < 3;i++)
+                                                       if (DotProduct(vert[0], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f
+                                                        || DotProduct(vert[1], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f
+                                                        || DotProduct(vert[2], edgenormal[i]) > DotProduct(vert[i], edgenormal[i]) + 0.1f)
+                                                               Con_Printf("a! %i : %f %f %f (%f %f %f)\n", i, edgenormal[i][0], edgenormal[i][1], edgenormal[i][2], facenormal[0], facenormal[1], facenormal[2]);
+#endif
+                                               // face distance
+                                               if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
+                                                && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
+                                                && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
+                                               {
+                                                       // we got lucky, the center is within the face
+                                                       dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
+                                                       if (dist < 0)
+                                                       {
+                                                               dist = -dist;
+                                                               if (info->bestdist > dist)
+                                                               {
+                                                                       info->bestdist = dist;
+                                                                       VectorScale(facenormal, (info->radius - -dist), info->nudge);
+                                                               }
+                                                       }
+                                                       else
+                                                       {
+                                                               if (info->bestdist > dist)
+                                                               {
+                                                                       info->bestdist = dist;
+                                                                       VectorScale(facenormal, (info->radius - dist), info->nudge);
+                                                               }
+                                                       }
+                                               }
+                                               else
+                                               {
+                                                       // check which edge or vertex the center is nearest
+                                                       for (i = 0;i < 3;i++)
+                                                       {
+                                                               f = DotProduct(info->center, edge[i]);
+                                                               if (f >= DotProduct(vert[0], edge[i])
+                                                                && f <= DotProduct(vert[1], edge[i]))
+                                                               {
+                                                                       // on edge
+                                                                       VectorMA(info->center, -f, edge[i], point);
+                                                                       dist = sqrt(DotProduct(point, point));
+                                                                       if (info->bestdist > dist)
+                                                                       {
+                                                                               info->bestdist = dist;
+                                                                               VectorScale(point, (info->radius / dist), info->nudge);
+                                                                       }
+                                                                       // skip both vertex checks
+                                                                       // (both are further away than this edge)
+                                                                       i++;
+                                                               }
+                                                               else
+                                                               {
+                                                                       // not on edge, check first vertex of edge
+                                                                       VectorSubtract(info->center, vert[i], point);
+                                                                       dist = sqrt(DotProduct(point, point));
+                                                                       if (info->bestdist > dist)
+                                                                       {
+                                                                               info->bestdist = dist;
+                                                                               VectorScale(point, (info->radius / dist), info->nudge);
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+}
 
-       row = (model->numleafs+7)>>3;
-       out = decompressed;
+static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
+{
+       if (node->contents)
+       {
+               if (((mleaf_t *)node)->nummarksurfaces)
+                       Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
+       }
+       else
+       {
+               float f = PlaneDiff(info->center, node->plane);
+               if (f >= -info->bestdist)
+                       Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
+               if (f <= info->bestdist)
+                       Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
+       }
+}
 
+static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
+{
+       int i;
+       findnonsolidlocationinfo_t info;
+       if (model == NULL)
+       {
+               VectorCopy(in, out);
+               return;
+       }
+       VectorCopy(in, info.center);
+       info.radius = radius;
+       info.model = model;
+       i = 0;
        do
        {
-               if (*in)
+               VectorClear(info.nudge);
+               info.bestdist = radius;
+               Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode);
+               VectorAdd(info.center, info.nudge, info.center);
+       }
+       while (info.bestdist < radius && ++i < 10);
+       VectorCopy(info.center, out);
+}
+
+int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
+{
+       switch(nativecontents)
+       {
+               case CONTENTS_EMPTY:
+                       return 0;
+               case CONTENTS_SOLID:
+                       return SUPERCONTENTS_SOLID;
+               case CONTENTS_WATER:
+                       return SUPERCONTENTS_WATER;
+               case CONTENTS_SLIME:
+                       return SUPERCONTENTS_SLIME;
+               case CONTENTS_LAVA:
+                       return SUPERCONTENTS_LAVA;
+               case CONTENTS_SKY:
+                       return SUPERCONTENTS_SKY;
+       }
+       return 0;
+}
+
+int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
+{
+       if (supercontents & SUPERCONTENTS_SOLID)
+               return CONTENTS_SOLID;
+       if (supercontents & SUPERCONTENTS_SKY)
+               return CONTENTS_SKY;
+       if (supercontents & SUPERCONTENTS_LAVA)
+               return CONTENTS_LAVA;
+       if (supercontents & SUPERCONTENTS_SLIME)
+               return CONTENTS_SLIME;
+       if (supercontents & SUPERCONTENTS_WATER)
+               return CONTENTS_WATER;
+       return CONTENTS_EMPTY;
+}
+
+typedef struct
+{
+       // the hull we're tracing through
+       const hull_t *hull;
+
+       // the trace structure to fill in
+       trace_t *trace;
+
+       // start, end, and end - start (in model space)
+       double start[3];
+       double end[3];
+       double dist[3];
+}
+RecursiveHullCheckTraceInfo_t;
+
+// 1/32 epsilon to keep floating point happy
+#define DIST_EPSILON (0.03125)
+
+#define HULLCHECKSTATE_EMPTY 0
+#define HULLCHECKSTATE_SOLID 1
+#define HULLCHECKSTATE_DONE 2
+
+static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
+{
+       // status variables, these don't need to be saved on the stack when
+       // recursing...  but are because this should be thread-safe
+       // (note: tracing against a bbox is not thread-safe, yet)
+       int ret;
+       mplane_t *plane;
+       double t1, t2;
+
+       // variables that need to be stored on the stack when recursing
+       dclipnode_t *node;
+       int side;
+       double midf, mid[3];
+
+       // LordHavoc: a goto!  everyone flee in terror... :)
+loc0:
+       // check for empty
+       if (num < 0)
+       {
+               num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
+               if (!t->trace->startfound)
                {
-                       *out++ = *in++;
-                       continue;
+                       t->trace->startfound = true;
+                       t->trace->startsupercontents |= num;
+               }
+               if (num & SUPERCONTENTS_LIQUIDSMASK)
+                       t->trace->inwater = true;
+               if (num == 0)
+                       t->trace->inopen = true;
+               if (num & t->trace->hitsupercontentsmask)
+               {
+                       // if the first leaf is solid, set startsolid
+                       if (t->trace->allsolid)
+                               t->trace->startsolid = true;
+                       return HULLCHECKSTATE_SOLID;
+               }
+               else
+               {
+                       t->trace->allsolid = false;
+                       return HULLCHECKSTATE_EMPTY;
                }
+       }
+
+       // find the point distances
+       node = t->hull->clipnodes + num;
+
+       plane = t->hull->planes + node->planenum;
+       if (plane->type < 3)
+       {
+               t1 = p1[plane->type] - plane->dist;
+               t2 = p2[plane->type] - plane->dist;
+       }
+       else
+       {
+               t1 = DotProduct (plane->normal, p1) - plane->dist;
+               t2 = DotProduct (plane->normal, p2) - plane->dist;
+       }
 
-               c = in[1];
-               in += 2;
-               while (c)
+       if (t1 < 0)
+       {
+               if (t2 < 0)
+               {
+                       num = node->children[1];
+                       goto loc0;
+               }
+               side = 1;
+       }
+       else
+       {
+               if (t2 >= 0)
                {
-                       *out++ = 0;
-                       c--;
+                       num = node->children[0];
+                       goto loc0;
                }
-       } while (out - decompressed < row);
+               side = 0;
+       }
+
+       // the line intersects, find intersection point
+       // LordHavoc: this uses the original trace for maximum accuracy
+       if (plane->type < 3)
+       {
+               t1 = t->start[plane->type] - plane->dist;
+               t2 = t->end[plane->type] - plane->dist;
+       }
+       else
+       {
+               t1 = DotProduct (plane->normal, t->start) - plane->dist;
+               t2 = DotProduct (plane->normal, t->end) - plane->dist;
+       }
+
+       midf = t1 / (t1 - t2);
+       midf = bound(p1f, midf, p2f);
+       VectorMA(t->start, midf, t->dist, mid);
+
+       // recurse both sides, front side first
+       ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
+       // if this side is not empty, return what it is (solid or done)
+       if (ret != HULLCHECKSTATE_EMPTY)
+               return ret;
 
-       return decompressed;
+       ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
+       // if other side is not solid, return what it is (empty or done)
+       if (ret != HULLCHECKSTATE_SOLID)
+               return ret;
+
+       // front is air and back is solid, this is the impact point...
+       if (side)
+       {
+               t->trace->plane.dist = -plane->dist;
+               VectorNegate (plane->normal, t->trace->plane.normal);
+       }
+       else
+       {
+               t->trace->plane.dist = plane->dist;
+               VectorCopy (plane->normal, t->trace->plane.normal);
+       }
+
+       // bias away from surface a bit
+       t1 = DotProduct(t->trace->plane.normal, t->start) - (t->trace->plane.dist + DIST_EPSILON);
+       t2 = DotProduct(t->trace->plane.normal, t->end) - (t->trace->plane.dist + DIST_EPSILON);
+
+       midf = t1 / (t1 - t2);
+       t->trace->fraction = bound(0.0f, midf, 1.0);
+
+       return HULLCHECKSTATE_DONE;
 }
 
-qbyte *Mod_LeafPVS (mleaf_t *leaf, model_t *model)
+static void Mod_Q1BSP_TraceBox(struct model_s *model, trace_t *trace, const vec3_t boxstartmins, const vec3_t boxstartmaxs, const vec3_t boxendmins, const vec3_t boxendmaxs, int hitsupercontentsmask)
 {
-       if (r_novis.integer || leaf == model->leafs || leaf->compressed_vis == NULL)
-               return mod_novis;
-       return Mod_DecompressVis (leaf->compressed_vis, model);
+       // this function currently only supports same size start and end
+       double boxsize[3];
+       RecursiveHullCheckTraceInfo_t rhc;
+
+       memset(&rhc, 0, sizeof(rhc));
+       memset(trace, 0, sizeof(trace_t));
+       rhc.trace = trace;
+       rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+       rhc.trace->fraction = 1;
+       rhc.trace->allsolid = true;
+       VectorSubtract(boxstartmaxs, boxstartmins, boxsize);
+       if (boxsize[0] < 3)
+               rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
+       else if (model->brush.ishlbsp)
+       {
+               if (boxsize[0] <= 32)
+               {
+                       if (boxsize[2] < 54) // pick the nearest of 36 or 72
+                               rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
+                       else
+                               rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
+               }
+               else
+                       rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
+       }
+       else
+       {
+               if (boxsize[0] <= 32)
+                       rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
+               else
+                       rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
+       }
+       VectorSubtract(boxstartmins, rhc.hull->clip_mins, rhc.start);
+       VectorSubtract(boxendmins, rhc.hull->clip_mins, rhc.end);
+       VectorSubtract(rhc.end, rhc.start, rhc.dist);
+       Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 }
 
+static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
+{
+       int side, distz = endz - startz;
+       float front, back;
+       float mid;
+
+loc0:
+       if (node->contents < 0)
+               return false;           // didn't hit anything
+
+       switch (node->plane->type)
+       {
+       case PLANE_X:
+               node = node->children[x < node->plane->dist];
+               goto loc0;
+       case PLANE_Y:
+               node = node->children[y < node->plane->dist];
+               goto loc0;
+       case PLANE_Z:
+               side = startz < node->plane->dist;
+               if ((endz < node->plane->dist) == side)
+               {
+                       node = node->children[side];
+                       goto loc0;
+               }
+               // found an intersection
+               mid = node->plane->dist;
+               break;
+       default:
+               back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
+               front += startz * node->plane->normal[2];
+               back += endz * node->plane->normal[2];
+               side = front < node->plane->dist;
+               if ((back < node->plane->dist) == side)
+               {
+                       node = node->children[side];
+                       goto loc0;
+               }
+               // found an intersection
+               mid = startz + distz * (front - node->plane->dist) / (front - back);
+               break;
+       }
+
+       // go down front side
+       if (node->children[side]->contents >= 0 && Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
+               return true;    // hit something
+       else
+       {
+               // check for impact on this node
+               if (node->numsurfaces)
+               {
+                       int i, ds, dt;
+                       msurface_t *surf;
+
+                       surf = cl.worldmodel->brushq1.surfaces + node->firstsurface;
+                       for (i = 0;i < node->numsurfaces;i++, surf++)
+                       {
+                               if (!(surf->flags & SURF_LIGHTMAP))
+                                       continue;       // no lightmaps
+
+                               ds = (int) (x * surf->texinfo->vecs[0][0] + y * surf->texinfo->vecs[0][1] + mid * surf->texinfo->vecs[0][2] + surf->texinfo->vecs[0][3]);
+                               dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]);
+
+                               if (ds < surf->texturemins[0] || dt < surf->texturemins[1])
+                                       continue;
+
+                               ds -= surf->texturemins[0];
+                               dt -= surf->texturemins[1];
+
+                               if (ds > surf->extents[0] || dt > surf->extents[1])
+                                       continue;
+
+                               if (surf->samples)
+                               {
+                                       qbyte *lightmap;
+                                       int maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
+                                       line3 = ((surf->extents[0]>>4)+1)*3;
+                                       size3 = ((surf->extents[0]>>4)+1) * ((surf->extents[1]>>4)+1)*3; // LordHavoc: *3 for colored lighting
+
+                                       lightmap = surf->samples + ((dt>>4) * ((surf->extents[0]>>4)+1) + (ds>>4))*3; // LordHavoc: *3 for color
+
+                                       for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
+                                       {
+                                               scale = d_lightstylevalue[surf->styles[maps]];
+                                               r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
+                                               r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
+                                               r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
+                                               r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
+                                               lightmap += size3;
+                                       }
+
 /*
-=================
-Mod_LoadTextures
-=================
+LordHavoc: here's the readable version of the interpolation
+code, not quite as easy for the compiler to optimize...
+
+dsfrac is the X position in the lightmap pixel, * 16
+dtfrac is the Y position in the lightmap pixel, * 16
+r00 is top left corner, r01 is top right corner
+r10 is bottom left corner, r11 is bottom right corner
+g and b are the same layout.
+r0 and r1 are the top and bottom intermediate results
+
+first we interpolate the top two points, to get the top
+edge sample
+
+       r0 = (((r01-r00) * dsfrac) >> 4) + r00;
+       g0 = (((g01-g00) * dsfrac) >> 4) + g00;
+       b0 = (((b01-b00) * dsfrac) >> 4) + b00;
+
+then we interpolate the bottom two points, to get the
+bottom edge sample
+
+       r1 = (((r11-r10) * dsfrac) >> 4) + r10;
+       g1 = (((g11-g10) * dsfrac) >> 4) + g10;
+       b1 = (((b11-b10) * dsfrac) >> 4) + b10;
+
+then we interpolate the top and bottom samples to get the
+middle sample (the one which was requested)
+
+       r = (((r1-r0) * dtfrac) >> 4) + r0;
+       g = (((g1-g0) * dtfrac) >> 4) + g0;
+       b = (((b1-b0) * dtfrac) >> 4) + b0;
 */
-static void Mod_LoadTextures (lump_t *l)
+
+                                       ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
+                                       ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
+                                       ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
+                               }
+                               return true; // success
+                       }
+               }
+
+               // go down back side
+               node = node->children[side ^ 1];
+               startz = mid;
+               distz = endz - startz;
+               goto loc0;
+       }
+}
+
+void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
+{
+       Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
+}
+
+static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *out, qbyte *outend)
+{
+       int c;
+       while (out < outend)
+       {
+               if (in == inend)
+               {
+                       Con_Printf("Mod_Q1BSP_DecompressVis: input underrun\n");
+                       return;
+               }
+               c = *in++;
+               if (c)
+                       *out++ = c;
+               else
+               {
+                       for (c = *in++;c > 0;c--)
+                       {
+                               if (out == outend)
+                               {
+                                       Con_Printf("Mod_Q1BSP_DecompressVis: output overrun\n");
+                                       return;
+                               }
+                               *out++ = 0;
+                       }
+               }
+       }
+}
+
+static void Mod_Q1BSP_LoadTextures(lump_t *l)
 {
        int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
        miptex_t *dmiptex;
        texture_t *tx, *tx2, *anims[10], *altanims[10];
        dmiptexlump_t *m;
-       qbyte *data, *mtdata, *data2;
+       qbyte *data, *mtdata;
        char name[256];
 
-       loadmodel->textures = NULL;
-
-       if (!l->filelen)
-               return;
-
-       m = (dmiptexlump_t *)(mod_base + l->fileofs);
-
-       m->nummiptex = LittleLong (m->nummiptex);
+       loadmodel->brushq1.textures = NULL;
 
        // add two slots for notexture walls and notexture liquids
-       loadmodel->numtextures = m->nummiptex + 2;
-       loadmodel->textures = Mem_Alloc(loadmodel->mempool, loadmodel->numtextures * sizeof(texture_t));
+       if (l->filelen)
+       {
+               m = (dmiptexlump_t *)(mod_base + l->fileofs);
+               m->nummiptex = LittleLong (m->nummiptex);
+               loadmodel->brushq1.numtextures = m->nummiptex + 2;
+       }
+       else
+       {
+               m = NULL;
+               loadmodel->brushq1.numtextures = 2;
+       }
+
+       loadmodel->brushq1.textures = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numtextures * sizeof(texture_t));
 
        // fill out all slots with notexture
-       for (i = 0, tx = loadmodel->textures;i < loadmodel->numtextures;i++, tx++)
+       for (i = 0, tx = loadmodel->brushq1.textures;i < loadmodel->brushq1.numtextures;i++, tx++)
        {
+               tx->number = i;
+               strcpy(tx->name, "NO TEXTURE FOUND");
                tx->width = 16;
                tx->height = 16;
-               tx->texture = r_notexture;
+               tx->skin.base = r_notexture;
                tx->shader = &Cshader_wall_lightmap;
-               if (i == loadmodel->numtextures - 1)
+               tx->flags = SURF_SOLIDCLIP;
+               if (i == loadmodel->brushq1.numtextures - 1)
                {
-                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->flags |= SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
                        tx->shader = &Cshader_water;
                }
+               tx->currentframe = tx;
        }
 
+       if (!m)
+               return;
+
        // just to work around bounds checking when debugging with it (array index out of bounds error thing)
        dofs = m->dataofs;
        // LordHavoc: mostly rewritten map texture loader
@@ -256,30 +784,30 @@ static void Mod_LoadTextures (lump_t *l)
                        name[j] = dmiptex->name[j];
                name[j] = 0;
 
-               mtwidth = LittleLong (dmiptex->width);
-               mtheight = LittleLong (dmiptex->height);
+               mtwidth = LittleLong(dmiptex->width);
+               mtheight = LittleLong(dmiptex->height);
                mtdata = NULL;
-               j = LittleLong (dmiptex->offsets[0]);
+               j = LittleLong(dmiptex->offsets[0]);
                if (j)
                {
                        // texture included
                        if (j < 40 || j + mtwidth * mtheight > l->filelen)
                        {
-                               Con_Printf ("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
+                               Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
                                continue;
                        }
                        mtdata = (qbyte *)dmiptex + j;
                }
 
                if ((mtwidth & 15) || (mtheight & 15))
-                       Con_Printf ("warning: texture \"%s\" in \"%s\" is not 16 aligned", dmiptex->name, loadmodel->name);
+                       Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned", dmiptex->name, loadmodel->name);
 
                // LordHavoc: force all names to lowercase
                for (j = 0;name[j];j++)
                        if (name[j] >= 'A' && name[j] <= 'Z')
                                name[j] += 'a' - 'A';
 
-               tx = loadmodel->textures + i;
+               tx = loadmodel->brushq1.textures + i;
                strcpy(tx->name, name);
                tx->width = mtwidth;
                tx->height = mtheight;
@@ -291,7 +819,7 @@ static void Mod_LoadTextures (lump_t *l)
                }
 
                // LordHavoc: HL sky textures are entirely different than quake
-               if (!loadmodel->ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
+               if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
                {
                        if (loadmodel->isworldmodel)
                        {
@@ -300,116 +828,73 @@ static void Mod_LoadTextures (lump_t *l)
                                {
                                        if (image_width == 256 && image_height == 128)
                                        {
-                                               R_InitSky (data, 4);
+                                               R_InitSky(data, 4);
                                                Mem_Free(data);
                                        }
                                        else
                                        {
                                                Mem_Free(data);
-                                               Con_Printf ("Invalid replacement texture for sky \"%s\" in %\"%s\", must be 256x128 pixels\n", tx->name, loadmodel->name);
+                                               Con_Printf("Invalid replacement texture for sky \"%s\" in %\"%s\", must be 256x128 pixels\n", tx->name, loadmodel->name);
                                                if (mtdata != NULL)
-                                                       R_InitSky (mtdata, 1);
+                                                       R_InitSky(mtdata, 1);
                                        }
                                }
                                else if (mtdata != NULL)
-                                       R_InitSky (mtdata, 1);
+                                       R_InitSky(mtdata, 1);
                        }
                }
-               else if ((tx->texture = loadtextureimagewithmask(loadmodel->texturepool, tx->name, 0, 0, false, true, true)))
-               {
-                       tx->fogtexture = image_masktex;
-                       strcpy(name, tx->name);
-                       strcat(name, "_glow");
-                       tx->glowtexture = loadtextureimage(loadmodel->texturepool, name, 0, 0, false, true, true);
-               }
                else
                {
-                       if (loadmodel->ishlbsp)
+                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, false, true, true))
                        {
-                               if (mtdata && (data = W_ConvertWAD3Texture(dmiptex)))
-                               {
-                                       // texture included
-                                       tx->texture = R_LoadTexture (loadmodel->texturepool, tx->name, image_width, image_height, data, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE);
-                                       if (R_TextureHasAlpha(tx->texture))
-                                       {
-                                               // make mask texture
-                                               for (j = 0;j < image_width * image_height;j++)
-                                                       data[j*4+0] = data[j*4+1] = data[j*4+2] = 255;
-                                               strcpy(name, tx->name);
-                                               strcat(name, "_fog");
-                                               tx->fogtexture = R_LoadTexture (loadmodel->texturepool, name, image_width, image_height, data, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE);
-                                       }
-                                       Mem_Free(data);
-                               }
-                               else if ((data = W_GetTexture(tx->name)))
+                               // did not find external texture, load it from the bsp or wad3
+                               if (loadmodel->brush.ishlbsp)
                                {
-                                       // get the size from the wad texture
-                                       tx->width = image_width;
-                                       tx->height = image_height;
-                                       tx->texture = R_LoadTexture (loadmodel->texturepool, tx->name, image_width, image_height, data, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE);
-                                       if (R_TextureHasAlpha(tx->texture))
+                                       // internal texture overrides wad
+                                       qbyte *pixels, *freepixels, *fogpixels;
+                                       pixels = freepixels = NULL;
+                                       if (mtdata)
+                                               pixels = W_ConvertWAD3Texture(dmiptex);
+                                       if (pixels == NULL)
+                                               pixels = freepixels = W_GetTexture(tx->name);
+                                       if (pixels != NULL)
                                        {
-                                               // make mask texture
-                                               for (j = 0;j < image_width * image_height;j++)
-                                                       data[j*4+0] = data[j*4+1] = data[j*4+2] = 255;
-                                               strcpy(name, tx->name);
-                                               strcat(name, "_fog");
-                                               tx->fogtexture = R_LoadTexture (loadmodel->texturepool, name, image_width, image_height, data, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE);
+                                               tx->width = image_width;
+                                               tx->height = image_height;
+                                               tx->skin.base = tx->skin.merged = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
+                                               if (Image_CheckAlpha(pixels, image_width * image_height, true))
+                                               {
+                                                       fogpixels = Mem_Alloc(tempmempool, image_width * image_height * 4);
+                                                       for (j = 0;j < image_width * image_height * 4;j += 4)
+                                                       {
+                                                               fogpixels[j + 0] = 255;
+                                                               fogpixels[j + 1] = 255;
+                                                               fogpixels[j + 2] = 255;
+                                                               fogpixels[j + 3] = pixels[j + 3];
+                                                       }
+                                                       tx->skin.fog = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
+                                                       Mem_Free(fogpixels);
+                                               }
                                        }
-                                       Mem_Free(data);
-                               }
-                               else
-                               {
-                                       tx->width = 16;
-                                       tx->height = 16;
-                                       tx->texture = r_notexture;
-                               }
-                       }
-                       else
-                       {
-                               if (mtdata) // texture included
-                               {
-                                       int fullbrights;
-                                       data = mtdata;
-                                       fullbrights = false;
-                                       if (r_fullbrights.value && tx->name[0] != '*')
-                                       {
-                                               for (j = 0;j < tx->width*tx->height;j++)
-                                               {
-                                                       if (data[j] >= 224) // fullbright
-                                                       {
-                                                               fullbrights = true;
-                                                               break;
-                                                       }
-                                               }
-                                       }
-                                       if (fullbrights)
-                                       {
-                                               data2 = Mem_Alloc(loadmodel->mempool, tx->width*tx->height);
-                                               for (j = 0;j < tx->width*tx->height;j++)
-                                                       data2[j] = data[j] >= 224 ? 0 : data[j]; // no fullbrights
-                                               tx->texture = R_LoadTexture (loadmodel->texturepool, tx->name, tx->width, tx->height, data2, TEXTYPE_QPALETTE, TEXF_MIPMAP | TEXF_PRECACHE);
-                                               strcpy(name, tx->name);
-                                               strcat(name, "_glow");
-                                               for (j = 0;j < tx->width*tx->height;j++)
-                                                       data2[j] = data[j] >= 224 ? data[j] : 0; // only fullbrights
-                                               tx->glowtexture = R_LoadTexture (loadmodel->texturepool, name, tx->width, tx->height, data2, TEXTYPE_QPALETTE, TEXF_MIPMAP | TEXF_PRECACHE);
-                                               Mem_Free(data2);
-                                       }
-                                       else
-                                               tx->texture = R_LoadTexture (loadmodel->texturepool, tx->name, tx->width, tx->height, data, TEXTYPE_QPALETTE, TEXF_MIPMAP | TEXF_PRECACHE);
-                               }
-                               else // no texture, and no external replacement texture was found
-                               {
-                                       tx->width = 16;
-                                       tx->height = 16;
-                                       tx->texture = r_notexture;
+                                       if (freepixels)
+                                               Mem_Free(freepixels);
                                }
+                               else if (mtdata) // texture included
+                                       Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE, false, true, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
                        }
                }
+               if (tx->skin.base == NULL)
+               {
+                       // no texture found
+                       tx->width = 16;
+                       tx->height = 16;
+                       tx->skin.base = r_notexture;
+               }
 
                if (tx->name[0] == '*')
                {
+                       // turb does not block movement
+                       tx->flags &= ~SURF_SOLIDCLIP;
                        tx->flags |= SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
                        // LordHavoc: some turbulent textures should be fullbright and solid
                        if (!strncmp(tx->name,"*lava",5)
@@ -428,34 +913,32 @@ static void Mod_LoadTextures (lump_t *l)
                else
                {
                        tx->flags |= SURF_LIGHTMAP;
-                       if (!tx->fogtexture)
+                       if (!tx->skin.fog)
                                tx->flags |= SURF_SHADOWCAST | SURF_SHADOWLIGHT;
                        tx->shader = &Cshader_wall_lightmap;
                }
 
-               tx->detailtexture = detailtextures[i % NUM_DETAILTEXTURES];
                // start out with no animation
-               tx->currentframe[0] = tx;
-               tx->currentframe[1] = tx;
+               tx->currentframe = tx;
        }
 
        // sequence the animations
        for (i = 0;i < m->nummiptex;i++)
        {
-               tx = loadmodel->textures + i;
+               tx = loadmodel->brushq1.textures + i;
                if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
                        continue;
                if (tx->anim_total[0] || tx->anim_total[1])
                        continue;       // already sequenced
 
                // find the number of frames in the animation
-               memset (anims, 0, sizeof(anims));
-               memset (altanims, 0, sizeof(altanims));
+               memset(anims, 0, sizeof(anims));
+               memset(altanims, 0, sizeof(altanims));
 
                for (j = i;j < m->nummiptex;j++)
                {
-                       tx2 = loadmodel->textures + j;
-                       if (!tx2 || tx2->name[0] != '+' || strcmp (tx2->name+2, tx->name+2))
+                       tx2 = loadmodel->brushq1.textures + j;
+                       if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
                                continue;
 
                        num = tx2->name[1];
@@ -464,7 +947,7 @@ static void Mod_LoadTextures (lump_t *l)
                        else if (num >= 'a' && num <= 'j')
                                altanims[num - 'a'] = tx2;
                        else
-                               Con_Printf ("Bad animating texture %s\n", tx->name);
+                               Con_Printf("Bad animating texture %s\n", tx->name);
                }
 
                max = altmax = 0;
@@ -482,7 +965,7 @@ static void Mod_LoadTextures (lump_t *l)
                {
                        if (!anims[j])
                        {
-                               Con_Printf ("Missing frame %i of %s\n", j, tx->name);
+                               Con_Printf("Missing frame %i of %s\n", j, tx->name);
                                incomplete = true;
                        }
                }
@@ -490,7 +973,7 @@ static void Mod_LoadTextures (lump_t *l)
                {
                        if (!altanims[j])
                        {
-                               Con_Printf ("Missing altframe %i of %s\n", j, tx->name);
+                               Con_Printf("Missing altframe %i of %s\n", j, tx->name);
                                incomplete = true;
                        }
                }
@@ -541,39 +1024,34 @@ static void Mod_LoadTextures (lump_t *l)
        }
 }
 
-/*
-=================
-Mod_LoadLighting
-=================
-*/
-static void Mod_LoadLighting (lump_t *l)
+static void Mod_Q1BSP_LoadLighting(lump_t *l)
 {
        int i;
        qbyte *in, *out, *data, d;
        char litfilename[1024];
-       loadmodel->lightdata = NULL;
-       if (loadmodel->ishlbsp) // LordHavoc: load the colored lighting data straight
+       loadmodel->brushq1.lightdata = NULL;
+       if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
        {
-               loadmodel->lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
-               memcpy (loadmodel->lightdata, mod_base + l->fileofs, l->filelen);
+               loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
+               memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
        }
        else // LordHavoc: bsp version 29 (normal white lighting)
        {
                // LordHavoc: hope is not lost yet, check for a .lit file to load
-               strcpy(litfilename, loadmodel->name);
-               COM_StripExtension(litfilename, litfilename);
-               strcat(litfilename, ".lit");
-               data = (qbyte*) COM_LoadFile (litfilename, false);
+               strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
+               FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
+               strlcat (litfilename, ".lit", sizeof (litfilename));
+               data = (qbyte*) FS_LoadFile(litfilename, false);
                if (data)
                {
-                       if (loadsize > 8 && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
+                       if (fs_filesize > 8 && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
                        {
                                i = LittleLong(((int *)data)[1]);
                                if (i == 1)
                                {
-                                       Con_DPrintf("%s loaded", litfilename);
-                                       loadmodel->lightdata = Mem_Alloc(loadmodel->mempool, loadsize - 8);
-                                       memcpy(loadmodel->lightdata, data + 8, loadsize - 8);
+                                       Con_DPrintf("loaded %s\n", litfilename);
+                                       loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, fs_filesize - 8);
+                                       memcpy(loadmodel->brushq1.lightdata, data + 8, fs_filesize - 8);
                                        Mem_Free(data);
                                        return;
                                }
@@ -585,7 +1063,7 @@ static void Mod_LoadLighting (lump_t *l)
                        }
                        else
                        {
-                               if (loadsize == 8)
+                               if (fs_filesize == 8)
                                        Con_Printf("Empty .lit file, ignoring\n");
                                else
                                        Con_Printf("Corrupt .lit file (old version?), ignoring\n");
@@ -595,10 +1073,10 @@ static void Mod_LoadLighting (lump_t *l)
                // LordHavoc: oh well, expand the white lighting data
                if (!l->filelen)
                        return;
-               loadmodel->lightdata = Mem_Alloc(loadmodel->mempool, l->filelen*3);
-               in = loadmodel->lightdata + l->filelen*2; // place the file at the end, so it will not be overwritten until the very last write
-               out = loadmodel->lightdata;
-               memcpy (in, mod_base + l->fileofs, l->filelen);
+               loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen*3);
+               in = loadmodel->brushq1.lightdata + l->filelen*2; // place the file at the end, so it will not be overwritten until the very last write
+               out = loadmodel->brushq1.lightdata;
+               memcpy(in, mod_base + l->fileofs, l->filelen);
                for (i = 0;i < l->filelen;i++)
                {
                        d = *in++;
@@ -609,16 +1087,16 @@ static void Mod_LoadLighting (lump_t *l)
        }
 }
 
-void Mod_LoadLightList(void)
+static void Mod_Q1BSP_LoadLightList(void)
 {
        int a, n, numlights;
        char lightsfilename[1024], *s, *t, *lightsstring;
        mlight_t *e;
 
-       strcpy(lightsfilename, loadmodel->name);
-       COM_StripExtension(lightsfilename, lightsfilename);
-       strcat(lightsfilename, ".lights");
-       s = lightsstring = (char *) COM_LoadFile (lightsfilename, false);
+       strlcpy (lightsfilename, loadmodel->name, sizeof (lightsfilename));
+       FS_StripExtension (lightsfilename, lightsfilename, sizeof(lightsfilename));
+       strlcat (lightsfilename, ".lights", sizeof (lightsfilename));
+       s = lightsstring = (char *) FS_LoadFile(lightsfilename, false);
        if (s)
        {
                numlights = 0;
@@ -634,7 +1112,7 @@ void Mod_LoadLightList(void)
                        s++;
                        numlights++;
                }
-               loadmodel->lights = Mem_Alloc(loadmodel->mempool, numlights * sizeof(mlight_t));
+               loadmodel->brushq1.lights = Mem_Alloc(loadmodel->mempool, numlights * sizeof(mlight_t));
                s = lightsstring;
                n = 0;
                while (*s && n < numlights)
@@ -647,7 +1125,7 @@ void Mod_LoadLightList(void)
                                Mem_Free(lightsstring);
                                Host_Error("misparsed lights file!\n");
                        }
-                       e = loadmodel->lights + n;
+                       e = loadmodel->brushq1.lights + n;
                        *s = 0;
                        a = sscanf(t, "%f %f %f %f %f %f %f %f %f %f %f %f %f %d", &e->origin[0], &e->origin[1], &e->origin[2], &e->falloff, &e->light[0], &e->light[1], &e->light[2], &e->subtract, &e->spotdir[0], &e->spotdir[1], &e->spotdir[2], &e->spotcone, &e->distbias, &e->style);
                        *s = '\n';
@@ -664,2983 +1142,3431 @@ void Mod_LoadLightList(void)
                        Mem_Free(lightsstring);
                        Host_Error("misparsed lights file!\n");
                }
-               loadmodel->numlights = numlights;
+               loadmodel->brushq1.numlights = numlights;
                Mem_Free(lightsstring);
        }
 }
 
-
-
-/*
-// svbspmesh_t is in model_brush.h
-
-typedef struct svbsppolygon_s
-{
-       struct svbsppolygon_s *next;
-       int numverts;
-       float *verts;
-       float normal[3], dist;
-}
-svbsppolygon_t;
-
-typedef struct svbspnode_s
-{
-       // true if this is a leaf (has no children), not a node
-       int isleaf;
-       // (shared) parent node
-       struct svbspnode_s *parent;
-       // (leaf) dark or lit leaf
-       int dark;
-       // (leaf) polygons bounding this leaf
-       svbsppolygon_t *polygons;
-       // (node) children
-       struct svbspnode_s *children[2];
-       // (node) splitting plane
-       float normal[3], dist;
-}
-svbspnode_t;
-
-svbspnode_t *Mod_SVBSP_AllocNode(svbspnode_t *parent, svbspnode_t *child0, svbspnode_t *child1, float *normal, float dist)
-{
-       svbspnode_t *node;
-       node = Mem_Alloc(loadmodel->mempool, sizeof(svbspnode_t));
-       node->parent = parent;
-       node->children[0] = child0;
-       node->children[1] = child1;
-       VectorCopy(normal, node->normal);
-       node->dist = dist;
-       return node;
-}
-
-svbspnode_t *Mod_SVBSP_AllocLeaf(svbspnode_t *parent, int dark)
-{
-       svbspnode_t *leaf;
-       leaf = Mem_Alloc(loadmodel->mempool, sizeof(svbspnode_t));
-       leaf->isleaf = true;
-       leaf->parent = parent;
-       leaf->dark = dark;
-       return leaf;
-}
-
-svbspnode_t *Mod_SVBSP_NewTree(void)
-{
-       return Mod_SVBSP_AllocLeaf(NULL, false);
-}
-
-void Mod_SVBSP_FreeTree(svbspnode_t *node)
+static void Mod_Q1BSP_LoadVisibility(lump_t *l)
 {
-       if (!node->isleaf)
-       {
-               Mod_SVBSP_FreeTree(node->children[0]);
-               Mod_SVBSP_FreeTree(node->children[1]);
-       }
-       Mem_Free(node);
+       loadmodel->brushq1.num_compressedpvs = 0;
+       loadmodel->brushq1.data_compressedpvs = NULL;
+       if (!l->filelen)
+               return;
+       loadmodel->brushq1.num_compressedpvs = l->filelen;
+       loadmodel->brushq1.data_compressedpvs = Mem_Alloc(loadmodel->mempool, l->filelen);
+       memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
 }
 
-void Mod_SVBSP_RecursiveAddPolygon(svbspnode_t *node, int numverts, float *verts, float *normal, float dist, int constructmode)
+// used only for HalfLife maps
+static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
 {
-       int i, j, numvertsfront, numvertsback, maxverts, counts[3];
-       float *vertsfront, *vertsback, *v, d, temp[3];
-       float dists[4096];
-       qbyte sides[4096];
-       svbsppolygon_t *poly;
-       if (node->isleaf)
+       char key[128], value[4096];
+       char wadname[128];
+       int i, j, k;
+       if (!data)
+               return;
+       if (!COM_ParseToken(&data, false))
+               return; // error
+       if (com_token[0] != '{')
+               return; // error
+       while (1)
        {
-               if (constructmode == 0)
-               {
-                       // construct tree structure
-                       node->isleaf = false;
-                       node->children[0] = Mod_SVBSP_AllocLeaf(node, false);
-                       node->children[1] = Mod_SVBSP_AllocLeaf(node, false);
-                       VectorCopy(normal, node->normal);
-                       node->dist = dist;
-               }
-               else if (constructmode == 1)
-               {
-                       // mark dark leafs
-                       node->dark = true;
-               }
+               if (!COM_ParseToken(&data, false))
+                       return; // error
+               if (com_token[0] == '}')
+                       break; // end of worldspawn
+               if (com_token[0] == '_')
+                       strcpy(key, com_token + 1);
                else
+                       strcpy(key, com_token);
+               while (key[strlen(key)-1] == ' ') // remove trailing spaces
+                       key[strlen(key)-1] = 0;
+               if (!COM_ParseToken(&data, false))
+                       return; // error
+               strcpy(value, com_token);
+               if (!strcmp("wad", key)) // for HalfLife maps
                {
-                       // link polygons into lit leafs only (this is the optimization)
-                       if (!node->dark)
-                       {
-                               poly = Mem_Alloc(loadmodel->mempool, sizeof(svbsppolygon_t) + numverts * sizeof(float[3]));
-                               poly->numverts = numverts;
-                               poly->verts = (float *)(poly + 1);
-                               VectorCopy(normal, poly->normal);
-                               poly->dist = dist;
-                               memcpy(poly->verts, verts, numverts * sizeof(float[3]));
-                               poly->next = node->polygons;
-                               node->polygons = poly;
-                       }
-               }
-       }
-       else
-       {
-               counts[SIDE_FRONT] = counts[SIDE_BACK] = counts[SIDE_ON] = 0;
-               for (i = 0, v = verts;i < numverts;i++, v += 3)
-               {
-                       dists[i] = DotProduct(v, node->normal) - node->dist;
-                       if (dists[i] >= 0.1)
-                               sides[i] = SIDE_FRONT;
-                       else if (dists[i] <= -0.1)
-                               sides[i] = SIDE_BACK;
-                       else
-                               sides[i] = SIDE_ON;
-                       counts[sides[i]]++;
-               }
-               if (counts[SIDE_FRONT] && counts[SIDE_BACK])
-               {
-                       // some front, some back...  sliced
-                       numvertsfront = 0;
-                       numvertsback = 0;
-                       // this is excessive, but nice for safety...
-                       maxverts = numverts + 4;
-                       vertsfront = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                       vertsback = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                       for (i = 0, j = numverts - 1;i < numverts;j = i, i++)
+                       if (loadmodel->brush.ishlbsp)
                        {
-                               if (sides[j] == SIDE_FRONT)
-                               {
-                                       VectorCopy(&verts[j * 3], &vertsfront[numvertsfront * 3]);
-                                       numvertsfront++;
-                                       if (sides[i] == SIDE_BACK)
-                                       {
-                                               d = dists[j] / (dists[j] - dists[i]);
-                                               VectorSubtract(&verts[i * 3], &verts[j * 3], temp);
-                                               VectorMA(&verts[j * 3], d, temp, temp);
-                                               VectorCopy(temp, &vertsfront[numvertsfront * 3]);
-                                               VectorCopy(temp, &vertsback[numvertsback * 3]);
-                                               numvertsfront++;
-                                               numvertsback++;
-                                       }
-                               }
-                               else if (sides[j] == SIDE_BACK)
+                               j = 0;
+                               for (i = 0;i < 4096;i++)
+                                       if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
+                                               break;
+                               if (value[i])
                                {
-                                       VectorCopy(&verts[j * 3], &vertsback[numvertsback * 3]);
-                                       numvertsback++;
-                                       if (sides[i] == SIDE_FRONT)
+                                       for (;i < 4096;i++)
                                        {
-                                               d = dists[j] / (dists[j] - dists[i]);
-                                               VectorSubtract(&verts[i * 3], &verts[j * 3], temp);
-                                               VectorMA(&verts[j * 3], d, temp, temp);
-                                               VectorCopy(temp, &vertsfront[numvertsfront * 3]);
-                                               VectorCopy(temp, &vertsback[numvertsback * 3]);
-                                               numvertsfront++;
-                                               numvertsback++;
+                                               // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
+                                               if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
+                                                       j = i+1;
+                                               else if (value[i] == ';' || value[i] == 0)
+                                               {
+                                                       k = value[i];
+                                                       value[i] = 0;
+                                                       strcpy(wadname, "textures/");
+                                                       strcat(wadname, &value[j]);
+                                                       W_LoadTextureWadFile(wadname, false);
+                                                       j = i+1;
+                                                       if (!k)
+                                                               break;
+                                               }
                                        }
                                }
-                               else
-                               {
-                                       VectorCopy(&verts[j * 3], &vertsfront[numvertsfront * 3]);
-                                       VectorCopy(&verts[j * 3], &vertsback[numvertsback * 3]);
-                                       numvertsfront++;
-                                       numvertsback++;
-                               }
-                       }
-                       Mod_SVBSP_RecursiveAddPolygon(node->children[1], numvertsfront, vertsfront, normal, dist, constructmode);
-                       Mod_SVBSP_RecursiveAddPolygon(node->children[0], numvertsback, vertsback, normal, dist, constructmode);
-                       Mem_Free(vertsfront);
-                       Mem_Free(vertsback);
-               }
-               else if (counts[SIDE_BACK])
-                       Mod_SVBSP_RecursiveAddPolygon(node->children[0], numverts, verts, normal, dist, constructmode);
-               else if (counts[SIDE_FRONT])
-                       Mod_SVBSP_RecursiveAddPolygon(node->children[1], numverts, verts, normal, dist, constructmode);
-               else
-               {
-                       // mode 0 is constructing tree, don't make unnecessary splits
-                       if (constructmode == 1)
-                       {
-                               // marking dark leafs
-                               // send it down the side it is not facing
-                               Mod_SVBSP_RecursiveAddPolygon(node->children[DotProduct(node->normal, normal) < 0], numverts, verts, normal, dist, constructmode);
-                       }
-                       else if (constructmode == 2)
-                       {
-                               // linking polygons into lit leafs only
-                               // send it down the side it is facing
-                               Mod_SVBSP_RecursiveAddPolygon(node->children[DotProduct(node->normal, normal) >= 0], numverts, verts, normal, dist, constructmode);
                        }
                }
        }
 }
 
-int svbsp_count_nodes;
-int svbsp_count_leafs;
-int svbsp_count_polygons;
-int svbsp_count_darkleafs;
-int svbsp_count_originalpolygons;
-int svbsp_count_meshs;
-int svbsp_count_triangles;
-int svbsp_count_vertices;
-
-void Mod_SVBSP_AddPolygon(svbspnode_t *root, int numverts, float *verts, int constructmode, float *test, int linenumber)
+static void Mod_Q1BSP_LoadEntities(lump_t *l)
 {
-       int i;
-       float normal[3], dist, dir0[3], dir1[3], *v0, *v1, *v2;
-       svbsp_count_originalpolygons++;
-       for (i = 0, v0 = verts + (numverts - 2) * 3, v1 = verts + (numverts - 1) * 3, v2 = verts;i < numverts;i++, v0 = v1, v1 = v2, v2 += 3)
-       {
-               VectorSubtract(v0, v1, dir0);
-               VectorSubtract(v2, v1, dir1);
-               CrossProduct(dir0, dir1, normal);
-               if (DotProduct(normal, normal) >= 0.1)
-                       break;
-       }
-       if (i == numverts)
+       loadmodel->brush.entities = NULL;
+       if (!l->filelen)
                return;
-       VectorNormalize(normal);
-       dist = DotProduct(verts, normal);
-       if (test && DotProduct(test, normal) > dist + 0.1)
-               Con_Printf("%i %f %f %f %f : %f %f %f %f\n", linenumber, normal[0], normal[1], normal[2], dist, test[0], test[1], test[2], DotProduct(test, normal));
-       Mod_SVBSP_RecursiveAddPolygon(root, numverts, verts, normal, dist, constructmode);
+       loadmodel->brush.entities = Mem_Alloc(loadmodel->mempool, l->filelen);
+       memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
+       if (loadmodel->brush.ishlbsp)
+               Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
 }
 
-void Mod_SVBSP_RecursiveGatherStats(svbspnode_t *node)
+
+static void Mod_Q1BSP_LoadVertexes(lump_t *l)
 {
-       svbsppolygon_t *poly;
-       for (poly = node->polygons;poly;poly = poly->next)
-               svbsp_count_polygons++;
-       if (node->isleaf)
-       {
-               svbsp_count_leafs++;
-               if (node->dark)
-                       svbsp_count_darkleafs++;
-       }
-       else
+       dvertex_t       *in;
+       mvertex_t       *out;
+       int                     i, count;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+
+       loadmodel->brushq1.vertexes = out;
+       loadmodel->brushq1.numvertexes = count;
+
+       for ( i=0 ; i<count ; i++, in++, out++)
        {
-               svbsp_count_nodes++;
-               Mod_SVBSP_RecursiveGatherStats(node->children[0]);
-               Mod_SVBSP_RecursiveGatherStats(node->children[1]);
+               out->position[0] = LittleFloat(in->point[0]);
+               out->position[1] = LittleFloat(in->point[1]);
+               out->position[2] = LittleFloat(in->point[2]);
        }
 }
 
-svbspmesh_t *Mod_SVBSP_AllocMesh(int maxverts)
+static void Mod_Q1BSP_LoadSubmodels(lump_t *l)
 {
-       svbspmesh_t *mesh;
-       mesh = Mem_Alloc(loadmodel->mempool, sizeof(svbspmesh_t) + maxverts * sizeof(float[4]) + maxverts * sizeof(int[3]));
-       mesh->maxverts = maxverts;
-       mesh->maxtriangles = maxverts;
-       mesh->numverts = 0;
-       mesh->numtriangles = 0;
-       mesh->verts = (float *)(mesh + 1);
-       mesh->elements = (int *)(mesh->verts + mesh->maxverts * 4);
-       return mesh;
-}
+       dmodel_t        *in;
+       dmodel_t        *out;
+       int                     i, j, count;
 
-svbspmesh_t *Mod_SVBSP_ReAllocMesh(svbspmesh_t *oldmesh)
-{
-       svbspmesh_t *newmesh;
-       newmesh = Mem_Alloc(loadmodel->mempool, sizeof(svbspmesh_t) + oldmesh->numverts * sizeof(float[4]) + oldmesh->numtriangles * sizeof(int[3]));
-       newmesh->maxverts = newmesh->numverts = oldmesh->numverts;
-       newmesh->maxtriangles = newmesh->numtriangles = oldmesh->numtriangles;
-       newmesh->verts = (float *)(newmesh + 1);
-       newmesh->elements = (int *)(newmesh->verts + newmesh->maxverts * 4);
-       memcpy(newmesh->verts, oldmesh->verts, newmesh->numverts * sizeof(float[4]));
-       memcpy(newmesh->elements, oldmesh->elements, newmesh->numtriangles * sizeof(int[3]));
-       return newmesh;
-}
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadSubmodels: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
-void Mod_SVBSP_RecursiveBuildTriangleMeshs(svbspmesh_t *firstmesh, svbspnode_t *node)
-{
-       svbsppolygon_t *poly;
-       svbspmesh_t *mesh;
-       int i, j, k;
-       float *v, *m, temp[3];
-       if (node->isleaf)
+       loadmodel->brushq1.submodels = out;
+       loadmodel->brush.numsubmodels = count;
+
+       for ( i=0 ; i<count ; i++, in++, out++)
        {
-               for (poly = node->polygons;poly;poly = poly->next)
+               for (j=0 ; j<3 ; j++)
                {
-                       mesh = firstmesh;
-                       while (poly->numverts + mesh->numverts > mesh->maxverts || (poly->numverts - 2) + mesh->numtriangles > mesh->maxtriangles)
-                       {
-                               if (mesh->next == NULL)
-                                       mesh->next = Mod_SVBSP_AllocMesh(max(1000, poly->numverts));
-                               mesh = mesh->next;
-                       }
-                       for (i = 0, v = poly->verts;i < poly->numverts - 2;i++, v += 3)
-                       {
-                               for (k = 0;k < 3;k++)
-                               {
-                                       if (k == 0)
-                                               v = poly->verts;
-                                       else if (k == 1)
-                                               v = poly->verts + (i + 1) * 3;
-                                       else if (k == 2)
-                                               v = poly->verts + (i + 2) * 3;
-                                       for (j = 0, m = mesh->verts;j < mesh->numverts;j++, m += 4)
-                                       {
-                                               VectorSubtract(v, m, temp);
-                                               if (DotProduct(temp, temp) < 0.1)
-                                                       break;
-                                       }
-                                       if (j == mesh->numverts)
-                                       {
-                                               mesh->numverts++;
-                                               VectorCopy(v, m);
-                                       }
-                                       mesh->elements[mesh->numtriangles * 3 + k] = j;
-                               }
-                               mesh->numtriangles++;
-                       }
+                       // spread the mins / maxs by a pixel
+                       out->mins[j] = LittleFloat(in->mins[j]) - 1;
+                       out->maxs[j] = LittleFloat(in->maxs[j]) + 1;
+                       out->origin[j] = LittleFloat(in->origin[j]);
                }
-       }
-       else
-       {
-               Mod_SVBSP_RecursiveBuildTriangleMeshs(firstmesh, node->children[0]);
-               Mod_SVBSP_RecursiveBuildTriangleMeshs(firstmesh, node->children[1]);
+               for (j=0 ; j<MAX_MAP_HULLS ; j++)
+                       out->headnode[j] = LittleLong(in->headnode[j]);
+               out->visleafs = LittleLong(in->visleafs);
+               out->firstface = LittleLong(in->firstface);
+               out->numfaces = LittleLong(in->numfaces);
        }
 }
 
-svbspmesh_t *Mod_SVBSP_BuildTriangleMeshs(svbspnode_t *root, vec3_t mins, vec3_t maxs)
+static void Mod_Q1BSP_LoadEdges(lump_t *l)
 {
-       svbspmesh_t *firstmesh, *mesh, *newmesh, *nextmesh;
-       int i;
-       float *v;
-       firstmesh = Mod_SVBSP_AllocMesh(1000);
-       Mod_SVBSP_RecursiveBuildTriangleMeshs(firstmesh, root);
-       // reallocate meshs to conserve space
-       for (mesh = firstmesh, firstmesh = NULL;mesh;mesh = nextmesh)
-       {
-               svbsp_count_meshs++;
-               svbsp_count_triangles += mesh->numtriangles;
-               svbsp_count_vertices += mesh->numverts;
+       dedge_t *in;
+       medge_t *out;
+       int     i, count;
 
-               // calculate bbox
-               if (firstmesh == NULL)
-               {
-                       VectorCopy(mesh->verts, mins);
-                       VectorCopy(mesh->verts, maxs);
-               }
-               for (i = 0, v = mesh->verts;i < mesh->numverts;i++, v += 4)
-               {
-                       if (mins[0] > v[0]) mins[0] = v[0];if (maxs[0] < v[0]) maxs[0] = v[0];
-                       if (mins[1] > v[1]) mins[1] = v[1];if (maxs[1] < v[1]) maxs[1] = v[1];
-                       if (mins[2] > v[2]) mins[2] = v[2];if (maxs[2] < v[2]) maxs[2] = v[2];
-               }
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               nextmesh = mesh->next;
-               newmesh = Mod_SVBSP_ReAllocMesh(mesh);
-               newmesh->next = firstmesh;
-               firstmesh = newmesh;
-               Mem_Free(mesh);
-       }
-       return firstmesh;
-}
+       loadmodel->brushq1.edges = out;
+       loadmodel->brushq1.numedges = count;
 
-void Mod_SVBSP_FreeTriangleMeshs(svbspmesh_t *mesh)
-{
-       svbspmesh_t *nextmesh;
-       for (;mesh;mesh = nextmesh)
+       for ( i=0 ; i<count ; i++, in++, out++)
        {
-               nextmesh = mesh->next;
-               Mem_Free(mesh);
+               out->v[0] = (unsigned short)LittleShort(in->v[0]);
+               out->v[1] = (unsigned short)LittleShort(in->v[1]);
        }
 }
-*/
-
-typedef struct svpolygon_s
-{
-       struct svpolygon_s *next;
-       int maxverts;
-       int numverts;
-       float *verts;
-       float normal[3], dist;
-}
-svpolygon_t;
 
-typedef struct svbrush_s
+static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
 {
-       struct svbrush_s *next;
-       svpolygon_t *polygons;
-       vec3_t mins, maxs;
-}
-svbrush_t;
+       texinfo_t *in;
+       mtexinfo_t *out;
+       int i, j, k, count, miptex;
 
-typedef struct svworld_s
-{
-       svbrush_t *brushs;
-}
-svworld_t;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-svworld_t *Mod_ShadowBrush_NewWorld(mempool_t *mempool)
-{
-       return Mem_Alloc(mempool, sizeof(svworld_t));
-}
+       loadmodel->brushq1.texinfo = out;
+       loadmodel->brushq1.numtexinfo = count;
 
-void Mod_ShadowBrush_FreeWorld(svworld_t *world)
-{
-       svbrush_t *brush, *brushnext;
-       svpolygon_t *poly, *polynext;
-       for (brush = world->brushs;brush;brush = brushnext)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               brushnext = brush->next;
-               for (poly = brush->polygons;poly;poly = polynext)
+               for (k = 0;k < 2;k++)
+                       for (j = 0;j < 4;j++)
+                               out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
+
+               miptex = LittleLong(in->miptex);
+               out->flags = LittleLong(in->flags);
+
+               out->texture = NULL;
+               if (loadmodel->brushq1.textures)
+               {
+                       if ((unsigned int) miptex >= (unsigned int) loadmodel->brushq1.numtextures)
+                               Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->brushq1.numtextures);
+                       else
+                               out->texture = loadmodel->brushq1.textures + miptex;
+               }
+               if (out->flags & TEX_SPECIAL)
                {
-                       polynext = poly->next;
-                       Mem_Free(poly);
+                       // if texture chosen is NULL or the shader needs a lightmap,
+                       // force to notexture water shader
+                       if (out->texture == NULL || out->texture->shader->flags & SHADERFLAGS_NEEDLIGHTMAP)
+                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 1);
+               }
+               else
+               {
+                       // if texture chosen is NULL, force to notexture
+                       if (out->texture == NULL)
+                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 2);
                }
-               Mem_Free(brush);
        }
-       Mem_Free(world);
 }
 
-svbrush_t *Mod_ShadowBrush_BeginBrush(mempool_t *mempool)
+#if 0
+void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
 {
-       return Mem_Alloc(mempool, sizeof(svbrush_t));
-}
+       int             i, j;
+       float   *v;
 
-void Mod_ShadowBrush_AddPolygon(mempool_t *mempool, svbrush_t *brush, int numverts, float *verts)
-{
-       int i;
-       float normal[3], dist, dir0[3], dir1[3], *v0, *v1, *v2;
-       svpolygon_t *poly;
-       for (i = 0, v0 = verts + (numverts - 2) * 3, v1 = verts + (numverts - 1) * 3, v2 = verts;i < numverts;i++, v0 = v1, v1 = v2, v2 += 3)
-       {
-               VectorSubtract(v0, v1, dir0);
-               VectorSubtract(v2, v1, dir1);
-               CrossProduct(dir0, dir1, normal);
-               if (DotProduct(normal, normal) >= 0.1)
-                       break;
+       mins[0] = mins[1] = mins[2] = 9999;
+       maxs[0] = maxs[1] = maxs[2] = -9999;
+       v = verts;
+       for (i = 0;i < numverts;i++)
+       {
+               for (j = 0;j < 3;j++, v++)
+               {
+                       if (*v < mins[j])
+                               mins[j] = *v;
+                       if (*v > maxs[j])
+                               maxs[j] = *v;
+               }
        }
-       if (i == numverts)
-               return;
-       VectorNormalize(normal);
-       dist = DotProduct(verts, normal);
-
-       poly = Mem_Alloc(mempool, sizeof(svpolygon_t) + numverts * sizeof(float[3]));
-       poly->numverts = numverts;
-       poly->verts = (float *)(poly + 1);
-       VectorCopy(normal, poly->normal);
-       poly->dist = dist;
-       poly->next = brush->polygons;
-       brush->polygons = poly;
-       memcpy(poly->verts, verts, numverts * sizeof(float[3]));
 }
 
-void Mod_ShadowBrush_AddPolygonI(mempool_t *mempool, svbrush_t *brush, int numverts, float *verts)
-{
-       int i;
-       float normal[3], dist, dir0[3], dir1[3], *v0, *v1, *v2;
-       svpolygon_t *poly;
-       for (i = 0, v0 = verts + (numverts - 2) * 3, v1 = verts + (numverts - 1) * 3, v2 = verts;i < numverts;i++, v0 = v1, v1 = v2, v2 += 3)
-       {
-               VectorSubtract(v0, v1, dir0);
-               VectorSubtract(v2, v1, dir1);
-               CrossProduct(dir0, dir1, normal);
-               if (DotProduct(normal, normal) >= 0.1)
-                       break;
-       }
-       if (i == numverts)
-               return;
-       VectorNormalize(normal);
-       dist = DotProduct(verts, normal);
-       VectorNegate(normal, normal);
-       dist = -dist;
+#define MAX_SUBDIVPOLYTRIANGLES 4096
+#define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
 
-       poly = Mem_Alloc(mempool, sizeof(svpolygon_t) + numverts * sizeof(float[3]));
-       poly->numverts = numverts;
-       poly->verts = (float *)(poly + 1);
-       VectorCopy(normal, poly->normal);
-       poly->dist = dist;
-       poly->next = brush->polygons;
-       brush->polygons = poly;
-       for (i = 0, v0 = verts + (numverts - 1) * 3, v1 = poly->verts;i < numverts;i++, v0 -= 3, v1 += 3)
-               VectorCopy(v0, v1);
-}
+static int subdivpolyverts, subdivpolytriangles;
+static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
+static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
 
-void Mod_ShadowBrush_EndBrush(svworld_t *world, svbrush_t *brush)
+static int subdivpolylookupvert(vec3_t v)
 {
        int i;
-       float *v;
-       svpolygon_t *poly;
-       if (!brush->polygons)
-       {
-               Mem_Free(brush);
-               return;
-       }
-       brush->next = world->brushs;
-       world->brushs = brush;
-       VectorCopy(brush->polygons->verts, brush->mins);
-       VectorCopy(brush->polygons->verts, brush->maxs);
-       for (poly = brush->polygons;poly;poly = poly->next)
-       {
-               for (i = 0, v = poly->verts;i < poly->numverts;i++, v += 3)
-               {
-                       if (brush->mins[0] > v[0]) brush->mins[0] = v[0];if (brush->maxs[0] < v[0]) brush->maxs[0] = v[0];
-                       if (brush->mins[1] > v[1]) brush->mins[1] = v[1];if (brush->maxs[1] < v[1]) brush->maxs[1] = v[1];
-                       if (brush->mins[2] > v[2]) brush->mins[2] = v[2];if (brush->maxs[2] < v[2]) brush->maxs[2] = v[2];
-               }
-       }
+       for (i = 0;i < subdivpolyverts;i++)
+               if (subdivpolyvert[i][0] == v[0]
+                && subdivpolyvert[i][1] == v[1]
+                && subdivpolyvert[i][2] == v[2])
+                       return i;
+       if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
+               Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
+       VectorCopy(v, subdivpolyvert[subdivpolyverts]);
+       return subdivpolyverts++;
 }
 
-void Mod_ShadowBrush_ProcessWorld(mempool_t *mempool, svworld_t *world)
+static void SubdividePolygon(int numverts, float *verts)
 {
-       /*
-       for (clipbrush = world->brushs;clipbrush;clipbrush = clipbrush->next)
-       {
-               for (brush = world->brushs;brush;brush = brush->next)
-               {
-                       if (brush != clipbrush
-                        && brush->mins[0] <= clipbrush->maxs[0]
-                        && brush->maxs[0] >= clipbrush->mins[0]
-                        && brush->mins[1] <= clipbrush->maxs[1]
-                        && brush->maxs[1] >= clipbrush->mins[1]
-                        && brush->mins[2] <= clipbrush->maxs[2]
-                        && brush->maxs[2] >= clipbrush->mins[2])
-                               continue;
-                       for (poly = brush->polygons;poly;poly = poly->next)
-                       {
+       int             i, i1, i2, i3, f, b, c, p;
+       vec3_t  mins, maxs, front[256], back[256];
+       float   m, *pv, *cv, dist[256], frac;
 
-                       }
-               }
-       }
-       */
-}
+       if (numverts > 250)
+               Host_Error("SubdividePolygon: ran out of verts in buffer");
 
-shadowmesh_t *Mod_ShadowBrush_BuildMeshs(mempool_t *mempool, svworld_t *world)
-{
-       shadowmesh_t *mesh;
-       svbrush_t *brush;
-       svpolygon_t *poly;
-       mesh = Mod_ShadowMesh_Begin(mempool);
-       for (brush = world->brushs;brush;brush = brush->next)
-               for (poly = brush->polygons;poly;poly = poly->next)
-                       Mod_ShadowMesh_AddPolygon(mempool, mesh, poly->numverts, poly->verts);
-       mesh = Mod_ShadowMesh_Finish(mempool, mesh);
-       return mesh;
-}
+       BoundPoly(numverts, verts, mins, maxs);
 
-void Mod_ProcessLightList(void)
-{
-       int j, k, *mark, lnum;
-       mlight_t *e;
-       msurface_t *surf;
-       float dist;
-       mleaf_t *leaf;
-       qbyte *pvs;
-       for (lnum = 0, e = loadmodel->lights;lnum < loadmodel->numlights;lnum++, e++)
-       {
-               e->cullradius2 = DotProduct(e->light, e->light) / (e->falloff * e->falloff * 8192.0f * 8192.0f);// + 4096.0f;
-               if (e->cullradius2 > 4096.0f * 4096.0f)
-                       e->cullradius2 = 4096.0f * 4096.0f;
-               e->cullradius = e->lightradius = sqrt(e->cullradius2);
-               leaf = Mod_PointInLeaf(e->origin, loadmodel);
-               if (leaf->compressed_vis)
-                       pvs = Mod_DecompressVis (leaf->compressed_vis, loadmodel);
-               else
-                       pvs = mod_novis;
-               for (j = 0;j < loadmodel->numsurfaces;j++)
-                       loadmodel->surfacevisframes[j] = -1;
-               for (j = 0, leaf = loadmodel->leafs + 1;j < loadmodel->numleafs - 1;j++, leaf++)
+       for (i = 0;i < 3;i++)
+       {
+               m = (mins[i] + maxs[i]) * 0.5;
+               m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
+               if (maxs[i] - m < 8)
+                       continue;
+               if (m - mins[i] < 8)
+                       continue;
+
+               // cut it
+               for (cv = verts, c = 0;c < numverts;c++, cv += 3)
+                       dist[c] = cv[i] - m;
+
+               f = b = 0;
+               for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
                {
-                       if (pvs[j >> 3] & (1 << (j & 7)))
+                       if (dist[p] >= 0)
                        {
-                               for (k = 0, mark = leaf->firstmarksurface;k < leaf->nummarksurfaces;k++, mark++)
-                               {
-                                       surf = loadmodel->surfaces + *mark;
-                                       if (surf->number != *mark)
-                                               Con_Printf("%d != %d\n", surf->number, *mark);
-                                       dist = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
-                                       if (surf->flags & SURF_PLANEBACK)
-                                               dist = -dist;
-                                       if (dist > 0 && dist < e->cullradius)
-                                               loadmodel->surfacevisframes[*mark] = -2;
-                               }
+                               VectorCopy(pv, front[f]);
+                               f++;
                        }
-               }
-               // build list of light receiving surfaces
-               e->numsurfaces = 0;
-               for (j = 0;j < loadmodel->numsurfaces;j++)
-                       if (loadmodel->surfacevisframes[j] == -2)
-                               e->numsurfaces++;
-               e->surfaces = NULL;
-               if (e->numsurfaces > 0)
-               {
-                       e->surfaces = Mem_Alloc(loadmodel->mempool, sizeof(msurface_t *) * e->numsurfaces);
-                       e->numsurfaces = 0;
-                       for (j = 0;j < loadmodel->numsurfaces;j++)
-                               if (loadmodel->surfacevisframes[j] == -2)
-                                       e->surfaces[e->numsurfaces++] = loadmodel->surfaces + j;
-               }
-#if 1
-               {
-               // find bounding box and sphere of lit surfaces
-               // (these will be used for creating a shape to clip the light)
-               float *v, temp[3], radius2;
-               radius2 = 0;
-               for (j = 0;j < e->numsurfaces;j++)
-               {
-                       surf = e->surfaces[j];
-                       if (j == 0)
+                       if (dist[p] <= 0)
                        {
-                               VectorCopy(surf->poly_verts, e->mins);
-                               VectorCopy(surf->poly_verts, e->maxs);
+                               VectorCopy(pv, back[b]);
+                               b++;
                        }
-                       for (k = 0, v = surf->poly_verts;k < surf->poly_numverts;k++, v += 3)
+                       if (dist[p] == 0 || dist[c] == 0)
+                               continue;
+                       if ((dist[p] > 0) != (dist[c] > 0) )
                        {
-                               if (e->mins[0] > v[0]) e->mins[0] = v[0];if (e->maxs[0] < v[0]) e->maxs[0] = v[0];
-                               if (e->mins[1] > v[1]) e->mins[1] = v[1];if (e->maxs[1] < v[1]) e->maxs[1] = v[1];
-                               if (e->mins[2] > v[2]) e->mins[2] = v[2];if (e->maxs[2] < v[2]) e->maxs[2] = v[2];
-                               VectorSubtract(v, e->origin, temp);
-                               dist = DotProduct(temp, temp);
-                               if (radius2 < dist)
-                                       radius2 = dist;
+                               // clip point
+                               frac = dist[p] / (dist[p] - dist[c]);
+                               front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
+                               front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
+                               front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
+                               f++;
+                               b++;
                        }
                }
-               if (e->cullradius2 > radius2)
+
+               SubdividePolygon(f, front[0]);
+               SubdividePolygon(b, back[0]);
+               return;
+       }
+
+       i1 = subdivpolylookupvert(verts);
+       i2 = subdivpolylookupvert(verts + 3);
+       for (i = 2;i < numverts;i++)
+       {
+               if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
                {
-                       e->cullradius2 = radius2;
-                       e->cullradius = sqrt(e->cullradius2);
-               }
-               }
-#endif
-#if 1
-               e->mins[0] = e->origin[0] - e->cullradius;
-               e->maxs[0] = e->origin[0] + e->cullradius;
-               e->mins[1] = e->origin[1] - e->cullradius;
-               e->maxs[1] = e->origin[1] + e->cullradius;
-               e->mins[2] = e->origin[2] - e->cullradius;
-               e->maxs[2] = e->origin[2] + e->cullradius;
-#endif
-#if 1
-               // clip shadow volumes against eachother to remove unnecessary
-               // polygons (and sections of polygons)
-               {
-                       vec3_t temp;
-                       //vec3_t polymins, polymaxs;
-                       int maxverts = 4;
-                       float *verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                       float f, *v0, *v1, projectdistance;
-                       svworld_t *svworld;
-                       svbrush_t *svbrush;
-
-                       svworld = Mod_ShadowBrush_NewWorld(loadmodel->mempool);
-#if 0
-                       {
-                       vec3_t outermins, outermaxs, innermins, innermaxs;
-                       innermins[0] = e->mins[0] - 1;
-                       innermins[1] = e->mins[1] - 1;
-                       innermins[2] = e->mins[2] - 1;
-                       innermaxs[0] = e->maxs[0] + 1;
-                       innermaxs[1] = e->maxs[1] + 1;
-                       innermaxs[2] = e->maxs[2] + 1;
-                       outermins[0] = loadmodel->normalmins[0] - 1;
-                       outermins[1] = loadmodel->normalmins[1] - 1;
-                       outermins[2] = loadmodel->normalmins[2] - 1;
-                       outermaxs[0] = loadmodel->normalmaxs[0] + 1;
-                       outermaxs[1] = loadmodel->normalmaxs[1] + 1;
-                       outermaxs[2] = loadmodel->normalmaxs[2] + 1;
-                       // add bounding box around the whole shadow volume set,
-                       // facing inward to limit light area, with an outer bounding box
-                       // facing outward (this is needed by the shadow rendering method)
-                       // X major
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermaxs[0];verts[ 1] = innermins[1];verts[ 2] = innermaxs[2];
-                       verts[ 3] = innermaxs[0];verts[ 4] = innermins[1];verts[ 5] = innermins[2];
-                       verts[ 6] = innermaxs[0];verts[ 7] = innermaxs[1];verts[ 8] = innermins[2];
-                       verts[ 9] = innermaxs[0];verts[10] = innermaxs[1];verts[11] = innermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermaxs[0];verts[ 1] = outermaxs[1];verts[ 2] = outermaxs[2];
-                       verts[ 3] = outermaxs[0];verts[ 4] = outermaxs[1];verts[ 5] = outermins[2];
-                       verts[ 6] = outermaxs[0];verts[ 7] = outermins[1];verts[ 8] = outermins[2];
-                       verts[ 9] = outermaxs[0];verts[10] = outermins[1];verts[11] = outermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       // X minor
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermins[0];verts[ 1] = innermaxs[1];verts[ 2] = innermaxs[2];
-                       verts[ 3] = innermins[0];verts[ 4] = innermaxs[1];verts[ 5] = innermins[2];
-                       verts[ 6] = innermins[0];verts[ 7] = innermins[1];verts[ 8] = innermins[2];
-                       verts[ 9] = innermins[0];verts[10] = innermins[1];verts[11] = innermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermins[0];verts[ 1] = outermins[1];verts[ 2] = outermaxs[2];
-                       verts[ 3] = outermins[0];verts[ 4] = outermins[1];verts[ 5] = outermins[2];
-                       verts[ 6] = outermins[0];verts[ 7] = outermaxs[1];verts[ 8] = outermins[2];
-                       verts[ 9] = outermins[0];verts[10] = outermaxs[1];verts[11] = outermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       // Y major
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermaxs[0];verts[ 1] = innermaxs[1];verts[ 2] = innermaxs[2];
-                       verts[ 3] = innermaxs[0];verts[ 4] = innermaxs[1];verts[ 5] = innermins[2];
-                       verts[ 6] = innermins[0];verts[ 7] = innermaxs[1];verts[ 8] = innermins[2];
-                       verts[ 9] = innermins[0];verts[10] = innermaxs[1];verts[11] = innermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermins[0];verts[ 1] = outermaxs[1];verts[ 2] = outermaxs[2];
-                       verts[ 3] = outermins[0];verts[ 4] = outermaxs[1];verts[ 5] = outermins[2];
-                       verts[ 6] = outermaxs[0];verts[ 7] = outermaxs[1];verts[ 8] = outermins[2];
-                       verts[ 9] = outermaxs[0];verts[10] = outermaxs[1];verts[11] = outermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       // Y minor
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermins[0];verts[ 1] = innermins[1];verts[ 2] = innermaxs[2];
-                       verts[ 3] = innermins[0];verts[ 4] = innermins[1];verts[ 5] = innermins[2];
-                       verts[ 6] = innermaxs[0];verts[ 7] = innermins[1];verts[ 8] = innermins[2];
-                       verts[ 9] = innermaxs[0];verts[10] = innermins[1];verts[11] = innermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermaxs[0];verts[ 1] = outermins[1];verts[ 2] = outermaxs[2];
-                       verts[ 3] = outermaxs[0];verts[ 4] = outermins[1];verts[ 5] = outermins[2];
-                       verts[ 6] = outermins[0];verts[ 7] = outermins[1];verts[ 8] = outermins[2];
-                       verts[ 9] = outermins[0];verts[10] = outermins[1];verts[11] = outermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       // Z major
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermaxs[0];verts[ 1] = innermins[1];verts[ 2] = innermaxs[2];
-                       verts[ 3] = innermaxs[0];verts[ 4] = innermaxs[1];verts[ 5] = innermaxs[2];
-                       verts[ 6] = innermins[0];verts[ 7] = innermaxs[1];verts[ 8] = innermaxs[2];
-                       verts[ 9] = innermins[0];verts[10] = innermins[1];verts[11] = innermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermaxs[0];verts[ 1] = outermaxs[1];verts[ 2] = outermaxs[2];
-                       verts[ 3] = outermaxs[0];verts[ 4] = outermins[1];verts[ 5] = outermaxs[2];
-                       verts[ 6] = outermins[0];verts[ 7] = outermins[1];verts[ 8] = outermaxs[2];
-                       verts[ 9] = outermins[0];verts[10] = outermaxs[1];verts[11] = outermaxs[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       // Z minor
-                       svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-                       verts[ 0] = innermaxs[0];verts[ 1] = innermaxs[1];verts[ 2] = innermins[2];
-                       verts[ 3] = innermaxs[0];verts[ 4] = innermins[1];verts[ 5] = innermins[2];
-                       verts[ 6] = innermins[0];verts[ 7] = innermins[1];verts[ 8] = innermins[2];
-                       verts[ 9] = innermins[0];verts[10] = innermaxs[1];verts[11] = innermins[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       verts[ 0] = outermaxs[0];verts[ 1] = outermins[1];verts[ 2] = outermins[2];
-                       verts[ 3] = outermaxs[0];verts[ 4] = outermaxs[1];verts[ 5] = outermins[2];
-                       verts[ 6] = outermins[0];verts[ 7] = outermaxs[1];verts[ 8] = outermins[2];
-                       verts[ 9] = outermins[0];verts[10] = outermins[1];verts[11] = outermins[2];
-                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                       Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       }
-#endif
-#define SHADOWCASTFRONT 1
-#if SHADOWCASTFRONT
-                       for (j = 0;j < e->numsurfaces;j++)
-                       {
-                               surf = e->surfaces[j];
-#else
-                       for (j = 0, surf = loadmodel->surfaces + loadmodel->firstmodelsurface;j < loadmodel->nummodelsurfaces;j++, surf++)
-                       {
-#endif
-                               if (!(surf->flags & SURF_CLIPSOLID))
-                                       continue;
-                               f = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
-                               if (surf->flags & SURF_PLANEBACK)
-                                       f = -f;
-#if SHADOWCASTFRONT
-                               projectdistance = e->cullradius - f;
-#else
-                               projectdistance = e->cullradius + f;
-#endif
-                               if (projectdistance < 0.1 || projectdistance > e->cullradius)
-                                       continue;
-                               VectorSubtract(e->origin, surf->poly_center, temp);
-                               if (DotProduct(temp, temp) > (surf->poly_radius2 + e->cullradius2))
-                                       continue;
-                               /*
-                               VectorCopy(surf->poly_verts, polymins);
-                               VectorCopy(surf->poly_verts, polymaxs);
-                               for (k = 0, v0 = surf->poly_verts;k < surf->poly_numverts;k++, v0 += 3)
-                               {
-                                       if (polymins[0] > v0[0]) polymins[0] = v0[0];if (polymaxs[0] < v0[0]) polymaxs[0] = v0[0];
-                                       if (polymins[1] > v0[1]) polymins[1] = v0[1];if (polymaxs[1] < v0[1]) polymaxs[1] = v0[1];
-                                       if (polymins[2] > v0[2]) polymins[2] = v0[2];if (polymaxs[2] < v0[2]) polymaxs[2] = v0[2];
-                               }
-                               if (polymins[0] > e->maxs[0] || polymaxs[0] < e->mins[0]
-                                || polymins[1] > e->maxs[1] || polymaxs[1] < e->mins[1]
-                                || polymins[2] > e->maxs[2] || polymaxs[2] < e->mins[2])
-                                       continue;
-                               */
-                               if (maxverts < surf->poly_numverts)
-                               {
-                                       maxverts = surf->poly_numverts;
-                                       if (verts)
-                                               Mem_Free(verts);
-                                       verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                               }
-                               svbrush = Mod_ShadowBrush_BeginBrush(loadmodel->mempool);
-#if SHADOWCASTFRONT
-                               // copy the original polygon, for the front cap of the volume
-                               for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
-                                       VectorCopy(v0, v1);
-                               Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
-                               // project the original polygon, reversed, for the back cap of the volume
-                               for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
-                               {
-                                       VectorSubtract(v0, e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(v0, projectdistance, temp, v1);
-                               }
-                               Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
-                               // project the shadow volume sides
-                               for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
-                               {
-                                       VectorCopy(v1, &verts[0]);
-                                       VectorCopy(v0, &verts[3]);
-                                       VectorCopy(v0, &verts[6]);
-                                       VectorCopy(v1, &verts[9]);
-                                       VectorSubtract(&verts[6], e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(&verts[6], projectdistance, temp, &verts[6]);
-                                       VectorSubtract(&verts[9], e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(&verts[9], projectdistance, temp, &verts[9]);
-                                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                               }
-#else
-                               // copy the original polygon, reversed, for the front cap of the volume
-                               for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
-                                       VectorCopy(v0, v1);
-                               Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
-                               // project the original polygon, for the back cap of the volume
-                               for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
-                               {
-                                       VectorSubtract(v0, e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(v0, projectdistance, temp, v1);
-                               }
-                               Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, surf->poly_numverts, verts);
-                               // project the shadow volume sides
-                               for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
-                               {
-                                       VectorCopy(v0, &verts[0]);
-                                       VectorCopy(v1, &verts[3]);
-                                       VectorCopy(v1, &verts[6]);
-                                       VectorCopy(v0, &verts[9]);
-                                       VectorSubtract(&verts[6], e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(&verts[6], projectdistance, temp, &verts[6]);
-                                       VectorSubtract(&verts[9], e->origin, temp);
-                                       VectorNormalize(temp);
-                                       VectorMA(&verts[9], projectdistance, temp, &verts[9]);
-                                       Mod_ShadowBrush_AddPolygon(loadmodel->mempool, svbrush, 4, verts);
-                               }
-#endif
-                               Mod_ShadowBrush_EndBrush(svworld, svbrush);
-                       }
-                       // clip away hidden polygons
-                       Mod_ShadowBrush_ProcessWorld(loadmodel->mempool, svworld);
-                       // build the triangle mesh
-                       e->shadowvolume = Mod_ShadowBrush_BuildMeshs(loadmodel->mempool, svworld);
-                       Mod_ShadowBrush_FreeWorld(svworld);
-               }
-#elif 0
-               // build svbsp (shadow volume bsp)
-               {
-                       int maxverts = 0, constructmode;
-                       float *verts = NULL, projectdistance, *v0, *v1, f, temp[3];
-                       svbspnode_t *svbsproot;
-                       svbsproot = Mod_SVBSP_NewTree();
-                       // we do this in three stages:
-                       // 1. construct the svbsp structure
-                       // 2. mark which leafs are dark (shadow)
-                       // 3. link polygons into only leafs that are not dark
-                       // this results in polygons that are only on the outside of the
-                       // shadow volume, removing polygons that are inside the shadow
-                       // volume (which waste time)
-                       for (constructmode = 0;constructmode < 3;constructmode++)
-                       {
-                               svbsp_count_originalpolygons = 0;
-#if 1
-                               for (j = 0, surf = loadmodel->surfaces + loadmodel->firstmodelsurface;j < loadmodel->nummodelsurfaces;j++, surf++)
-                               {
-                                       if (!(surf->flags & SURF_SHADOWCAST))
-                                               continue;
-                                       /*
-                                       if (surf->poly_maxs[0] < e->mins[0]
-                                        || surf->poly_mins[0] > e->maxs[0]
-                                        || surf->poly_maxs[1] < e->mins[1]
-                                        || surf->poly_mins[1] > e->maxs[1]
-                                        || surf->poly_maxs[2] < e->mins[2]
-                                        || surf->poly_mins[2] > e->maxs[2])
-                                               continue;
-                                       */
-                                       f = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
-                                       if (surf->flags & SURF_PLANEBACK)
-                                               f = -f;
-                                       projectdistance = e->cullradius + f;
-                                       if (projectdistance < 0.1 || projectdistance > e->cullradius)
-                                               continue;
-                                       /*
-                                       // find the nearest vertex of the projected volume
-                                       for (k = 0, v0 = surf->poly_verts;k < surf->poly_numverts;k++, v0 += 3)
-                                       {
-                                               VectorSubtract(v0, e->origin, temp);
-                                               VectorNormalize(temp);
-                                               if (maxdist00 > v0[0] - e->origin[0]) maxdist00 = v0[0] - e->origin[0];
-                                               if (maxdist01 < e->origin[0] - v0[0]) maxdist01 = e->origin[0] - v0[0];
-                                               if (maxdist10 > v0[1] - e->origin[1]) maxdist10 = v0[1] - e->origin[1];
-                                               if (maxdist11 < e->origin[1] - v0[1]) maxdist11 = e->origin[1] - v0[1];
-                                               if (maxdist20 > v0[2] - e->origin[2]) maxdist20 = v0[2] - e->origin[2];
-                                               if (maxdist21 < e->origin[2] - v0[2]) maxdist21 = e->origin[2] - v0[2];
-                                               dist =
-
-                                               dist = DotProduct(temp, temp);
-                                               if (bestdist > dist)
-                                               {
-                                                       bestdist = dist;
-                                                       VectorCopy(temp, bestvec);
-                                               }
-                                       }
-                                       projectdistance = e->cullradius - sqrt(bestdist);
-                                       if (projectdistance < 0.1)
-                                               continue;
-                                       for (k = 0, v0 = surf->poly_verts;k < surf->poly_numverts;k++, v0 += 3)
-                                       {
-                                               VectorNormalize(temp);
-                                               if (temp[0] > 0)
-                                               {
-                                                       dist = (e->maxs[0] - e->origin[0]) / temp[0];
-                                                       if (maxdist >
-                                               }
-                                               else if (temp[0] < 0)
-                                                       dist = (e->mins[0] - e->origin[0]) / temp[0];
-                                               dist =
-                                               VectorMA(v0, projectdistance, temp, temp);
-                                               dist = (temp[0]
-                                               VectorSubtract(temp, e->origin,
-                                       }
-                                       */
-                                       VectorSubtract(e->origin, surf->poly_center, temp);
-                                       if (DotProduct(temp, temp) > (surf->poly_radius2 + e->cullradius2))
-                                               continue;
-                                       if (maxverts < surf->poly_numverts)
-                                       {
-                                               maxverts = surf->poly_numverts;
-                                               if (verts)
-                                                       Mem_Free(verts);
-                                               verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                                       }
-                                       // copy the original polygon, reversed, for the front cap of the volume
-                                       for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
-                                               VectorCopy(v0, v1);
-                                       Mod_SVBSP_AddPolygon(svbsproot, surf->poly_numverts, verts, constructmode, surf->poly_center, __LINE__);
-                                       // project the original polygon, for the back cap of the volume
-                                       for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
-                                       {
-                                               VectorSubtract(v0, e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(v0, projectdistance, temp, v1);
-                                       }
-                                       Mod_SVBSP_AddPolygon(svbsproot, surf->poly_numverts, verts, constructmode, surf->poly_center, __LINE__);
-                                       // project the shadow volume sides
-                                       for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
-                                       {
-                                               VectorCopy(v0, &verts[0]);
-                                               VectorCopy(v1, &verts[3]);
-                                               VectorCopy(v1, &verts[6]);
-                                               VectorCopy(v0, &verts[9]);
-                                               VectorSubtract(&verts[6], e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(&verts[6], projectdistance, temp, &verts[6]);
-                                               VectorSubtract(&verts[9], e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(&verts[9], projectdistance, temp, &verts[9]);
-                                               Mod_SVBSP_AddPolygon(svbsproot, 4, verts, constructmode, surf->poly_center, __LINE__);
-                                       }
-                               }
-#else
-                               for (j = 0;j < e->numsurfaces;j++)
-                               {
-                                       surf = e->surfaces[j];
-                                       if (!(surf->flags & SURF_SHADOWCAST))
-                                               continue;
-                                       f = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
-                                       if (surf->flags & SURF_PLANEBACK)
-                                               f = -f;
-                                       projectdistance = e->cullradius - f;
-                                       if (projectdistance < 0.1 || projectdistance > e->cullradius)
-                                               continue;
-                                       VectorSubtract(e->origin, surf->poly_center, temp);
-                                       if (DotProduct(temp, temp) > (surf->poly_radius2 + e->cullradius2))
-                                               continue;
-                                       if (maxverts < surf->poly_numverts)
-                                       {
-                                               maxverts = surf->poly_numverts;
-                                               if (verts)
-                                                       Mem_Free(verts);
-                                               verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
-                                       }
-                                       // copy the original polygon, for the front cap of the volume
-                                       for (k = 0, v0 = surf->poly_verts, v1 = verts;k < surf->poly_numverts;k++, v0 += 3, v1 += 3)
-                                               VectorCopy(v0, v1);
-                                       Mod_SVBSP_AddPolygon(svbsproot, surf->poly_numverts, verts, constructmode, surf->poly_center, __LINE__);
-                                       // project the original polygon, reversed, for the back cap of the volume
-                                       for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = verts;k < surf->poly_numverts;k++, v0 -= 3, v1 += 3)
-                                       {
-                                               VectorSubtract(v0, e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(v0, projectdistance, temp, v1);
-                                       }
-                                       Mod_SVBSP_AddPolygon(svbsproot, surf->poly_numverts, verts, constructmode, surf->poly_center, __LINE__);
-                                       // project the shadow volume sides
-                                       for (k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;k++, v0 = v1, v1 += 3)
-                                       {
-                                               VectorCopy(v1, &verts[0]);
-                                               VectorCopy(v0, &verts[3]);
-                                               VectorCopy(v0, &verts[6]);
-                                               VectorCopy(v1, &verts[9]);
-                                               VectorSubtract(&verts[6], e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(&verts[6], projectdistance, temp, &verts[6]);
-                                               VectorSubtract(&verts[9], e->origin, temp);
-                                               VectorNormalize(temp);
-                                               VectorMA(&verts[9], projectdistance, temp, &verts[9]);
-                                               Mod_SVBSP_AddPolygon(svbsproot, 4, verts, constructmode, surf->poly_center, __LINE__);
-                                       }
-                               }
-#endif
-                       }
-                       if (verts)
-                               Mem_Free(verts);
-
-                       svbsp_count_nodes = 0;
-                       svbsp_count_leafs = 0;
-                       svbsp_count_polygons = 0;
-                       svbsp_count_darkleafs = 0;
-                       svbsp_count_meshs = 0;
-                       svbsp_count_triangles = 0;
-                       svbsp_count_vertices = 0;
-                       e->shadowvolume = Mod_SVBSP_BuildTriangleMeshs(svbsproot, e->shadowvolumemins, e->shadowvolumemaxs);
-                       Mod_SVBSP_RecursiveGatherStats(svbsproot);
-                       Mod_SVBSP_FreeTree(svbsproot);
-                       Con_Printf("light %d (radius %d) has %d surfaces, svbsp contains %d nodes, %d leafs, %d are dark (%d%%), %d original polygons, %d polygons stored (%d%%), %d meshs %d vertices %d triangles\n", lnum, (int)e->cullradius, e->numsurfaces, svbsp_count_nodes, svbsp_count_leafs, svbsp_count_darkleafs, svbsp_count_leafs ? (100 * svbsp_count_darkleafs / svbsp_count_leafs) : 0, svbsp_count_originalpolygons, svbsp_count_polygons, svbsp_count_originalpolygons ? (100 * svbsp_count_polygons / svbsp_count_originalpolygons) : 0, svbsp_count_meshs, svbsp_count_triangles, svbsp_count_vertices);
+                       Con_Printf("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
+                       return;
                }
-#endif
+
+               i3 = subdivpolylookupvert(verts + i * 3);
+               subdivpolyindex[subdivpolytriangles][0] = i1;
+               subdivpolyindex[subdivpolytriangles][1] = i2;
+               subdivpolyindex[subdivpolytriangles][2] = i3;
+               i2 = i3;
+               subdivpolytriangles++;
        }
 }
 
+//Breaks a polygon up along axial 64 unit
+//boundaries so that turbulent and sky warps
+//can be done reasonably.
+static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
+{
+       int i, j;
+       surfvertex_t *v;
+       surfmesh_t *mesh;
 
-/*
-=================
-Mod_LoadVisibility
-=================
-*/
-static void Mod_LoadVisibility (lump_t *l)
+       subdivpolytriangles = 0;
+       subdivpolyverts = 0;
+       SubdividePolygon(surf->poly_numverts, surf->poly_verts);
+       if (subdivpolytriangles < 1)
+               Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?\n");
+
+       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
+       mesh->num_vertices = subdivpolyverts;
+       mesh->num_triangles = subdivpolytriangles;
+       mesh->vertex = (surfvertex_t *)(mesh + 1);
+       mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
+       memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
+
+       for (i = 0;i < mesh->num_triangles;i++)
+               for (j = 0;j < 3;j++)
+                       mesh->index[i*3+j] = subdivpolyindex[i][j];
+
+       for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
+       {
+               VectorCopy(subdivpolyvert[i], v->v);
+               v->st[0] = DotProduct(v->v, surf->texinfo->vecs[0]);
+               v->st[1] = DotProduct(v->v, surf->texinfo->vecs[1]);
+       }
+}
+#endif
+
+static surfmesh_t *Mod_Q1BSP_AllocSurfMesh(int numverts, int numtriangles)
 {
-       loadmodel->visdata = NULL;
-       if (!l->filelen)
-               return;
-       loadmodel->visdata = Mem_Alloc(loadmodel->mempool, l->filelen);
-       memcpy (loadmodel->visdata, mod_base + l->fileofs, l->filelen);
+       surfmesh_t *mesh;
+       mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + numtriangles * sizeof(int[6]) + numverts * (3 + 2 + 2 + 2 + 3 + 3 + 3 + 1) * sizeof(float));
+       mesh->num_vertices = numverts;
+       mesh->num_triangles = numtriangles;
+       mesh->data_vertex3f = (float *)(mesh + 1);
+       mesh->data_texcoordtexture2f = mesh->data_vertex3f + mesh->num_vertices * 3;
+       mesh->data_texcoordlightmap2f = mesh->data_texcoordtexture2f + mesh->num_vertices * 2;
+       mesh->data_texcoorddetail2f = mesh->data_texcoordlightmap2f + mesh->num_vertices * 2;
+       mesh->data_svector3f = (float *)(mesh->data_texcoorddetail2f + mesh->num_vertices * 2);
+       mesh->data_tvector3f = mesh->data_svector3f + mesh->num_vertices * 3;
+       mesh->data_normal3f = mesh->data_tvector3f + mesh->num_vertices * 3;
+       mesh->data_lightmapoffsets = (int *)(mesh->data_normal3f + mesh->num_vertices * 3);
+       mesh->data_element3i = mesh->data_lightmapoffsets + mesh->num_vertices;
+       mesh->data_neighbor3i = mesh->data_element3i + mesh->num_triangles * 3;
+       return mesh;
 }
 
-// used only for HalfLife maps
-void Mod_ParseWadsFromEntityLump(const char *data)
+static void Mod_Q1BSP_GenerateSurfacePolygon(msurface_t *surf, int firstedge, int numedges)
 {
-       char key[128], value[4096];
-       char wadname[128];
-       int i, j, k;
-       if (!data)
-               return;
-       if (!COM_ParseToken(&data))
-               return; // error
-       if (com_token[0] != '{')
-               return; // error
-       while (1)
+       int i, lindex, j;
+       float *vec, *vert, mins[3], maxs[3], val, *v;
+       mtexinfo_t *tex;
+
+       // convert edges back to a normal polygon
+       surf->poly_numverts = numedges;
+       vert = surf->poly_verts = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * numedges);
+       for (i = 0;i < numedges;i++)
        {
-               if (!COM_ParseToken(&data))
-                       return; // error
-               if (com_token[0] == '}')
-                       break; // end of worldspawn
-               if (com_token[0] == '_')
-                       strcpy(key, com_token + 1);
+               lindex = loadmodel->brushq1.surfedges[firstedge + i];
+               if (lindex > 0)
+                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position;
                else
-                       strcpy(key, com_token);
-               while (key[strlen(key)-1] == ' ') // remove trailing spaces
-                       key[strlen(key)-1] = 0;
-               if (!COM_ParseToken(&data))
-                       return; // error
-               strcpy(value, com_token);
-               if (!strcmp("wad", key)) // for HalfLife maps
+                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position;
+               VectorCopy(vec, vert);
+               vert += 3;
+       }
+
+       // calculate polygon bounding box and center
+       vert = surf->poly_verts;
+       VectorCopy(vert, mins);
+       VectorCopy(vert, maxs);
+       vert += 3;
+       for (i = 1;i < surf->poly_numverts;i++, vert += 3)
+       {
+               if (mins[0] > vert[0]) mins[0] = vert[0];if (maxs[0] < vert[0]) maxs[0] = vert[0];
+               if (mins[1] > vert[1]) mins[1] = vert[1];if (maxs[1] < vert[1]) maxs[1] = vert[1];
+               if (mins[2] > vert[2]) mins[2] = vert[2];if (maxs[2] < vert[2]) maxs[2] = vert[2];
+       }
+       VectorCopy(mins, surf->poly_mins);
+       VectorCopy(maxs, surf->poly_maxs);
+       surf->poly_center[0] = (mins[0] + maxs[0]) * 0.5f;
+       surf->poly_center[1] = (mins[1] + maxs[1]) * 0.5f;
+       surf->poly_center[2] = (mins[2] + maxs[2]) * 0.5f;
+
+       // generate surface extents information
+       tex = surf->texinfo;
+       mins[0] = maxs[0] = DotProduct(surf->poly_verts, tex->vecs[0]) + tex->vecs[0][3];
+       mins[1] = maxs[1] = DotProduct(surf->poly_verts, tex->vecs[1]) + tex->vecs[1][3];
+       for (i = 1, v = surf->poly_verts + 3;i < surf->poly_numverts;i++, v += 3)
+       {
+               for (j = 0;j < 2;j++)
                {
-                       if (loadmodel->ishlbsp)
-                       {
-                               j = 0;
-                               for (i = 0;i < 4096;i++)
-                                       if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
-                                               break;
-                               if (value[i])
-                               {
-                                       for (;i < 4096;i++)
-                                       {
-                                               // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
-                                               if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
-                                                       j = i+1;
-                                               else if (value[i] == ';' || value[i] == 0)
-                                               {
-                                                       k = value[i];
-                                                       value[i] = 0;
-                                                       strcpy(wadname, "textures/");
-                                                       strcat(wadname, &value[j]);
-                                                       W_LoadTextureWadFile (wadname, false);
-                                                       j = i+1;
-                                                       if (!k)
-                                                               break;
-                                               }
-                                       }
-                               }
-                       }
+                       val = DotProduct(v, tex->vecs[j]) + tex->vecs[j][3];
+                       if (mins[j] > val)
+                               mins[j] = val;
+                       if (maxs[j] < val)
+                               maxs[j] = val;
                }
        }
+       for (i = 0;i < 2;i++)
+       {
+               surf->texturemins[i] = (int) floor(mins[i] / 16) * 16;
+               surf->extents[i] = (int) ceil(maxs[i] / 16) * 16 - surf->texturemins[i];
+       }
 }
 
-/*
-=================
-Mod_LoadEntities
-=================
-*/
-static void Mod_LoadEntities (lump_t *l)
-{
-       loadmodel->entities = NULL;
-       if (!l->filelen)
-               return;
-       loadmodel->entities = Mem_Alloc(loadmodel->mempool, l->filelen);
-       memcpy (loadmodel->entities, mod_base + l->fileofs, l->filelen);
-       if (loadmodel->ishlbsp)
-               Mod_ParseWadsFromEntityLump(loadmodel->entities);
-}
-
-
-/*
-=================
-Mod_LoadVertexes
-=================
-*/
-static void Mod_LoadVertexes (lump_t *l)
+static void Mod_Q1BSP_LoadFaces(lump_t *l)
 {
-       dvertex_t       *in;
-       mvertex_t       *out;
-       int                     i, count;
+       dface_t *in;
+       msurface_t *surf;
+       int i, count, surfnum, planenum, ssize, tsize, firstedge, numedges, totalverts, totaltris, totalmeshes;
+       surfmesh_t *mesh;
+       float s, t;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       loadmodel->brushq1.surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
 
-       loadmodel->vertexes = out;
-       loadmodel->numvertexes = count;
+       loadmodel->brushq1.numsurfaces = count;
+       loadmodel->brushq1.surfacevisframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel->brushq1.surfacepvsframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel->brushq1.pvssurflist = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
 
-       for ( i=0 ; i<count ; i++, in++, out++)
+       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, in++, surf++)
        {
-               out->position[0] = LittleFloat (in->point[0]);
-               out->position[1] = LittleFloat (in->point[1]);
-               out->position[2] = LittleFloat (in->point[2]);
-       }
-}
+               surf->number = surfnum;
+               // FIXME: validate edges, texinfo, etc?
+               firstedge = LittleLong(in->firstedge);
+               numedges = LittleShort(in->numedges);
+               if ((unsigned int) firstedge > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)\n", firstedge, numedges, loadmodel->brushq1.numsurfedges);
+               i = LittleShort(in->texinfo);
+               if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)\n", i, loadmodel->brushq1.numtexinfo);
+               surf->texinfo = loadmodel->brushq1.texinfo + i;
+               surf->flags = surf->texinfo->texture->flags;
 
-/*
-=================
-Mod_LoadSubmodels
-=================
-*/
-static void Mod_LoadSubmodels (lump_t *l)
+               planenum = LittleShort(in->planenum);
+               if ((unsigned int) planenum >= (unsigned int) loadmodel->brushq1.numplanes)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->brushq1.numplanes);
+
+               if (LittleShort(in->side))
+                       surf->flags |= SURF_PLANEBACK;
+
+               surf->plane = loadmodel->brushq1.planes + planenum;
+
+               // clear lightmap (filled in later)
+               surf->lightmaptexture = NULL;
+
+               // force lightmap upload on first time seeing the surface
+               surf->cached_dlight = true;
+
+               Mod_Q1BSP_GenerateSurfacePolygon(surf, firstedge, numedges);
+
+               ssize = (surf->extents[0] >> 4) + 1;
+               tsize = (surf->extents[1] >> 4) + 1;
+
+               // lighting info
+               for (i = 0;i < MAXLIGHTMAPS;i++)
+                       surf->styles[i] = in->styles[i];
+               i = LittleLong(in->lightofs);
+               if (i == -1)
+                       surf->samples = NULL;
+               else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
+                       surf->samples = loadmodel->brushq1.lightdata + i;
+               else // LordHavoc: white lighting (bsp version 29)
+                       surf->samples = loadmodel->brushq1.lightdata + (i * 3);
+
+               if (surf->texinfo->texture->shader == &Cshader_wall_lightmap)
+               {
+                       if ((surf->extents[0] >> 4) + 1 > (256) || (surf->extents[1] >> 4) + 1 > (256))
+                               Host_Error("Bad surface extents");
+                       // stainmap for permanent marks on walls
+                       surf->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                       // clear to white
+                       memset(surf->stainsamples, 255, ssize * tsize * 3);
+               }
+       }
+
+       loadmodel->brushq1.entiremesh = Mod_Q1BSP_AllocSurfMesh(totalverts, totaltris);
+
+       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, surf++)
+       {
+               mesh = &surf->mesh;
+               mesh->num_vertices = surf->poly_numverts;
+               mesh->num_triangles = surf->poly_numverts - 2;
+               mesh->data_vertex3f = loadmodel->brushq1.entiremesh->data_vertex3f + totalverts * 3;
+               mesh->data_texcoordtexture2f = loadmodel->brushq1.entiremesh->data_texcoordtexture2f + totalverts * 2;
+               mesh->data_texcoordlightmap2f = loadmodel->brushq1.entiremesh->data_texcoordlightmap2f + totalverts * 2;
+               mesh->data_texcoorddetail2f = loadmodel->brushq1.entiremesh->data_texcoorddetail2f + totalverts * 2;
+               mesh->data_svector3f = loadmodel->brushq1.entiremesh->data_svector3f + totalverts * 3;
+               mesh->data_tvector3f = loadmodel->brushq1.entiremesh->data_tvector3f + totalverts * 3;
+               mesh->data_normal3f = loadmodel->brushq1.entiremesh->data_normal3f + totalverts * 3;
+               mesh->data_lightmapoffsets = loadmodel->brushq1.entiremesh->data_lightmapoffsets + totalverts;
+               mesh->data_element3i = loadmodel->brushq1.entiremesh->data_element3i + totaltris * 3;
+               mesh->data_neighbor3i = loadmodel->brushq1.entiremesh->data_neighbor3i + totaltris * 3;
+
+               surf->lightmaptexturestride = 0;
+               surf->lightmaptexture = NULL;
+
+               for (i = 0;i < mesh->num_vertices;i++)
+               {
+                       mesh->data_vertex3f[i * 3 + 0] = surf->poly_verts[i * 3 + 0];
+                       mesh->data_vertex3f[i * 3 + 1] = surf->poly_verts[i * 3 + 1];
+                       mesh->data_vertex3f[i * 3 + 2] = surf->poly_verts[i * 3 + 2];
+                       s = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
+                       t = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
+                       mesh->data_texcoordtexture2f[i * 2 + 0] = s / surf->texinfo->texture->width;
+                       mesh->data_texcoordtexture2f[i * 2 + 1] = t / surf->texinfo->texture->height;
+                       mesh->data_texcoorddetail2f[i * 2 + 0] = s * (1.0f / 16.0f);
+                       mesh->data_texcoorddetail2f[i * 2 + 1] = t * (1.0f / 16.0f);
+                       mesh->data_texcoordlightmap2f[i * 2 + 0] = 0;
+                       mesh->data_texcoordlightmap2f[i * 2 + 1] = 0;
+                       mesh->data_lightmapoffsets[i] = 0;
+               }
+
+               for (i = 0;i < mesh->num_triangles;i++)
+               {
+                       mesh->data_element3i[i * 3 + 0] = 0;
+                       mesh->data_element3i[i * 3 + 1] = i + 1;
+                       mesh->data_element3i[i * 3 + 2] = i + 2;
+               }
+
+               Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
+               Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, mesh->data_vertex3f, mesh->data_texcoordtexture2f, mesh->data_element3i, mesh->data_svector3f, mesh->data_tvector3f, mesh->data_normal3f);
+
+               if (surf->texinfo->texture->shader == &Cshader_wall_lightmap)
+               {
+                       int i, iu, iv, smax, tmax;
+                       float u, v, ubase, vbase, uscale, vscale;
+
+                       smax = surf->extents[0] >> 4;
+                       tmax = surf->extents[1] >> 4;
+
+                       surf->flags |= SURF_LIGHTMAP;
+                       if (r_miplightmaps.integer)
+                       {
+                               surf->lightmaptexturestride = smax+1;
+                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                       }
+                       else
+                       {
+                               surf->lightmaptexturestride = R_CompatibleFragmentWidth(smax+1, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
+                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                       }
+                       R_FragmentLocation(surf->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
+                       uscale = (uscale - ubase) / (smax + 1);
+                       vscale = (vscale - vbase) / (tmax + 1);
+
+                       for (i = 0;i < mesh->num_vertices;i++)
+                       {
+                               u = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) + 8 - surf->texturemins[0]) * (1.0 / 16.0);
+                               v = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) + 8 - surf->texturemins[1]) * (1.0 / 16.0);
+                               mesh->data_texcoordlightmap2f[i * 2 + 0] = u * uscale + ubase;
+                               mesh->data_texcoordlightmap2f[i * 2 + 1] = v * vscale + vbase;
+                               // LordHavoc: calc lightmap data offset for vertex lighting to use
+                               iu = (int) u;
+                               iv = (int) v;
+                               mesh->data_lightmapoffsets[i] = (bound(0, iv, tmax) * (smax+1) + bound(0, iu, smax)) * 3;
+                       }
+               }
+       }
+}
+
+static void Mod_Q1BSP_SetParent(mnode_t *node, mnode_t *parent)
 {
-       dmodel_t        *in;
-       dmodel_t        *out;
-       int                     i, j, count;
+       node->parent = parent;
+       if (node->contents < 0)
+               return;
+       Mod_Q1BSP_SetParent(node->children[0], node);
+       Mod_Q1BSP_SetParent(node->children[1], node);
+}
+
+static void Mod_Q1BSP_LoadNodes(lump_t *l)
+{
+       int                     i, j, count, p;
+       dnode_t         *in;
+       mnode_t         *out;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
-       loadmodel->submodels = out;
-       loadmodel->numsubmodels = count;
+       loadmodel->brushq1.nodes = out;
+       loadmodel->brushq1.numnodes = count;
 
        for ( i=0 ; i<count ; i++, in++, out++)
        {
                for (j=0 ; j<3 ; j++)
                {
-                       // spread the mins / maxs by a pixel
-                       out->mins[j] = LittleFloat (in->mins[j]) - 1;
-                       out->maxs[j] = LittleFloat (in->maxs[j]) + 1;
-                       out->origin[j] = LittleFloat (in->origin[j]);
+                       out->mins[j] = LittleShort(in->mins[j]);
+                       out->maxs[j] = LittleShort(in->maxs[j]);
+               }
+
+               p = LittleLong(in->planenum);
+               out->plane = loadmodel->brushq1.planes + p;
+
+               out->firstsurface = LittleShort(in->firstface);
+               out->numsurfaces = LittleShort(in->numfaces);
+
+               for (j=0 ; j<2 ; j++)
+               {
+                       p = LittleShort(in->children[j]);
+                       if (p >= 0)
+                               out->children[j] = loadmodel->brushq1.nodes + p;
+                       else
+                               out->children[j] = (mnode_t *)(loadmodel->brushq1.leafs + (-1 - p));
+               }
+       }
+
+       Mod_Q1BSP_SetParent(loadmodel->brushq1.nodes, NULL);    // sets nodes and leafs
+}
+
+static void Mod_Q1BSP_LoadLeafs(lump_t *l)
+{
+       dleaf_t *in;
+       mleaf_t *out;
+       int i, j, count, p, pvschainbytes;
+       qbyte *pvs;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+
+       loadmodel->brushq1.leafs = out;
+       loadmodel->brushq1.numleafs = count;
+       pvschainbytes = ((loadmodel->brushq1.numleafs - 1)+7)>>3;
+       loadmodel->brushq1.data_decompressedpvs = pvs = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numleafs * pvschainbytes);
+
+       for ( i=0 ; i<count ; i++, in++, out++)
+       {
+               for (j=0 ; j<3 ; j++)
+               {
+                       out->mins[j] = LittleShort(in->mins[j]);
+                       out->maxs[j] = LittleShort(in->maxs[j]);
+               }
+
+               // FIXME: this function could really benefit from some error checking
+
+               out->contents = LittleLong(in->contents);
+
+               out->firstmarksurface = loadmodel->brushq1.marksurfaces + LittleShort(in->firstmarksurface);
+               out->nummarksurfaces = LittleShort(in->nummarksurfaces);
+               if (out->firstmarksurface < 0 || LittleShort(in->firstmarksurface) + out->nummarksurfaces > loadmodel->brushq1.nummarksurfaces)
+               {
+                       Con_Printf("Mod_Q1BSP_LoadLeafs: invalid marksurface range %i:%i outside range %i:%i\n", out->firstmarksurface, out->firstmarksurface + out->nummarksurfaces, 0, loadmodel->brushq1.nummarksurfaces);
+                       out->firstmarksurface = NULL;
+                       out->nummarksurfaces = 0;
+               }
+
+               out->pvsdata = pvs;
+               memset(out->pvsdata, 0xFF, pvschainbytes);
+               pvs += pvschainbytes;
+
+               p = LittleLong(in->visofs);
+               if (p >= 0)
+               {
+                       if (p >= loadmodel->brushq1.num_compressedpvs)
+                               Con_Printf("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
+                       else
+                               Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, out->pvsdata, out->pvsdata + pvschainbytes);
+               }
+
+               for (j = 0;j < 4;j++)
+                       out->ambient_sound_level[j] = in->ambient_level[j];
+
+               // FIXME: Insert caustics here
+       }
+}
+
+static void Mod_Q1BSP_LoadClipnodes(lump_t *l)
+{
+       dclipnode_t *in, *out;
+       int                     i, count;
+       hull_t          *hull;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+
+       loadmodel->brushq1.clipnodes = out;
+       loadmodel->brushq1.numclipnodes = count;
+
+       if (loadmodel->brush.ishlbsp)
+       {
+               hull = &loadmodel->brushq1.hulls[1];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brushq1.planes;
+               hull->clip_mins[0] = -16;
+               hull->clip_mins[1] = -16;
+               hull->clip_mins[2] = -36;
+               hull->clip_maxs[0] = 16;
+               hull->clip_maxs[1] = 16;
+               hull->clip_maxs[2] = 36;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+
+               hull = &loadmodel->brushq1.hulls[2];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brushq1.planes;
+               hull->clip_mins[0] = -32;
+               hull->clip_mins[1] = -32;
+               hull->clip_mins[2] = -32;
+               hull->clip_maxs[0] = 32;
+               hull->clip_maxs[1] = 32;
+               hull->clip_maxs[2] = 32;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+
+               hull = &loadmodel->brushq1.hulls[3];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brushq1.planes;
+               hull->clip_mins[0] = -16;
+               hull->clip_mins[1] = -16;
+               hull->clip_mins[2] = -18;
+               hull->clip_maxs[0] = 16;
+               hull->clip_maxs[1] = 16;
+               hull->clip_maxs[2] = 18;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+       }
+       else
+       {
+               hull = &loadmodel->brushq1.hulls[1];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brushq1.planes;
+               hull->clip_mins[0] = -16;
+               hull->clip_mins[1] = -16;
+               hull->clip_mins[2] = -24;
+               hull->clip_maxs[0] = 16;
+               hull->clip_maxs[1] = 16;
+               hull->clip_maxs[2] = 32;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+
+               hull = &loadmodel->brushq1.hulls[2];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brushq1.planes;
+               hull->clip_mins[0] = -32;
+               hull->clip_mins[1] = -32;
+               hull->clip_mins[2] = -24;
+               hull->clip_maxs[0] = 32;
+               hull->clip_maxs[1] = 32;
+               hull->clip_maxs[2] = 64;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+       }
+
+       for (i=0 ; i<count ; i++, out++, in++)
+       {
+               out->planenum = LittleLong(in->planenum);
+               out->children[0] = LittleShort(in->children[0]);
+               out->children[1] = LittleShort(in->children[1]);
+               if (out->children[0] >= count || out->children[1] >= count)
+                       Host_Error("Corrupt clipping hull(out of range child)\n");
+       }
+}
+
+//Duplicate the drawing hull structure as a clipping hull
+static void Mod_Q1BSP_MakeHull0(void)
+{
+       mnode_t         *in;
+       dclipnode_t *out;
+       int                     i;
+       hull_t          *hull;
+
+       hull = &loadmodel->brushq1.hulls[0];
+
+       in = loadmodel->brushq1.nodes;
+       out = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numnodes * sizeof(dclipnode_t));
+
+       hull->clipnodes = out;
+       hull->firstclipnode = 0;
+       hull->lastclipnode = loadmodel->brushq1.numnodes - 1;
+       hull->planes = loadmodel->brushq1.planes;
+
+       for (i = 0;i < loadmodel->brushq1.numnodes;i++, out++, in++)
+       {
+               out->planenum = in->plane - loadmodel->brushq1.planes;
+               out->children[0] = in->children[0]->contents < 0 ? in->children[0]->contents : in->children[0] - loadmodel->brushq1.nodes;
+               out->children[1] = in->children[1]->contents < 0 ? in->children[1]->contents : in->children[1] - loadmodel->brushq1.nodes;
+       }
+}
+
+static void Mod_Q1BSP_LoadMarksurfaces(lump_t *l)
+{
+       int i, j;
+       short *in;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadMarksurfaces: funny lump size in %s",loadmodel->name);
+       loadmodel->brushq1.nummarksurfaces = l->filelen / sizeof(*in);
+       loadmodel->brushq1.marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.nummarksurfaces * sizeof(int));
+
+       for (i = 0;i < loadmodel->brushq1.nummarksurfaces;i++)
+       {
+               j = (unsigned) LittleShort(in[i]);
+               if (j >= loadmodel->brushq1.numsurfaces)
+                       Host_Error("Mod_Q1BSP_LoadMarksurfaces: bad surface number");
+               loadmodel->brushq1.marksurfaces[i] = j;
+       }
+}
+
+static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
+{
+       int             i;
+       int             *in;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
+       loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
+       loadmodel->brushq1.surfedges = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
+
+       for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
+               loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
+}
+
+
+static void Mod_Q1BSP_LoadPlanes(lump_t *l)
+{
+       int                     i;
+       mplane_t        *out;
+       dplane_t        *in;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
+
+       loadmodel->brushq1.numplanes = l->filelen / sizeof(*in);
+       loadmodel->brushq1.planes = out = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numplanes * sizeof(*out));
+
+       for (i = 0;i < loadmodel->brushq1.numplanes;i++, in++, out++)
+       {
+               out->normal[0] = LittleFloat(in->normal[0]);
+               out->normal[1] = LittleFloat(in->normal[1]);
+               out->normal[2] = LittleFloat(in->normal[2]);
+               out->dist = LittleFloat(in->dist);
+
+               PlaneClassify(out);
+       }
+}
+
+typedef struct portal_s
+{
+       mplane_t plane;
+       mnode_t *nodes[2];              // [0] = front side of plane
+       struct portal_s *next[2];
+       winding_t *winding;
+       struct portal_s *chain; // all portals are linked into a list
+}
+portal_t;
+
+static portal_t *portalchain;
+
+/*
+===========
+AllocPortal
+===========
+*/
+static portal_t *AllocPortal(void)
+{
+       portal_t *p;
+       p = Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
+       p->chain = portalchain;
+       portalchain = p;
+       return p;
+}
+
+static void FreePortal(portal_t *p)
+{
+       Mem_Free(p);
+}
+
+static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
+{
+       // calculate children first
+       if (node->children[0]->contents >= 0)
+               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
+       if (node->children[1]->contents >= 0)
+               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
+
+       // make combined bounding box from children
+       node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
+       node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
+       node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
+       node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
+       node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
+       node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
+}
+
+static void Mod_Q1BSP_FinalizePortals(void)
+{
+       int i, j, numportals, numpoints;
+       portal_t *p, *pnext;
+       mportal_t *portal;
+       mvertex_t *point;
+       mleaf_t *leaf, *endleaf;
+       winding_t *w;
+
+       // recalculate bounding boxes for all leafs(because qbsp is very sloppy)
+       leaf = loadmodel->brushq1.leafs;
+       endleaf = leaf + loadmodel->brushq1.numleafs;
+       for (;leaf < endleaf;leaf++)
+       {
+               VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
+               VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
+       }
+       p = portalchain;
+       while (p)
+       {
+               if (p->winding)
+               {
+                       for (i = 0;i < 2;i++)
+                       {
+                               leaf = (mleaf_t *)p->nodes[i];
+                               w = p->winding;
+                               for (j = 0;j < w->numpoints;j++)
+                               {
+                                       if (leaf->mins[0] > w->points[j][0]) leaf->mins[0] = w->points[j][0];
+                                       if (leaf->mins[1] > w->points[j][1]) leaf->mins[1] = w->points[j][1];
+                                       if (leaf->mins[2] > w->points[j][2]) leaf->mins[2] = w->points[j][2];
+                                       if (leaf->maxs[0] < w->points[j][0]) leaf->maxs[0] = w->points[j][0];
+                                       if (leaf->maxs[1] < w->points[j][1]) leaf->maxs[1] = w->points[j][1];
+                                       if (leaf->maxs[2] < w->points[j][2]) leaf->maxs[2] = w->points[j][2];
+                               }
+                       }
+               }
+               p = p->chain;
+       }
+
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brushq1.nodes);
+
+       // tally up portal and point counts
+       p = portalchain;
+       numportals = 0;
+       numpoints = 0;
+       while (p)
+       {
+               // note: this check must match the one below or it will usually corrupt memory
+               // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
+               if (p->winding && p->nodes[0] != p->nodes[1]
+                && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
+                && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+               {
+                       numportals += 2;
+                       numpoints += p->winding->numpoints * 2;
+               }
+               p = p->chain;
+       }
+       loadmodel->brushq1.portals = Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
+       loadmodel->brushq1.numportals = numportals;
+       loadmodel->brushq1.portalpoints = (void *)((qbyte *) loadmodel->brushq1.portals + numportals * sizeof(mportal_t));
+       loadmodel->brushq1.numportalpoints = numpoints;
+       // clear all leaf portal chains
+       for (i = 0;i < loadmodel->brushq1.numleafs;i++)
+               loadmodel->brushq1.leafs[i].portals = NULL;
+       // process all portals in the global portal chain, while freeing them
+       portal = loadmodel->brushq1.portals;
+       point = loadmodel->brushq1.portalpoints;
+       p = portalchain;
+       portalchain = NULL;
+       while (p)
+       {
+               pnext = p->chain;
+
+               if (p->winding)
+               {
+                       // note: this check must match the one above or it will usually corrupt memory
+                       // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
+                       if (p->nodes[0] != p->nodes[1]
+                        && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
+                        && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+                       {
+                               // first make the back to front portal(forward portal)
+                               portal->points = point;
+                               portal->numpoints = p->winding->numpoints;
+                               portal->plane.dist = p->plane.dist;
+                               VectorCopy(p->plane.normal, portal->plane.normal);
+                               portal->here = (mleaf_t *)p->nodes[1];
+                               portal->past = (mleaf_t *)p->nodes[0];
+                               // copy points
+                               for (j = 0;j < portal->numpoints;j++)
+                               {
+                                       VectorCopy(p->winding->points[j], point->position);
+                                       point++;
+                               }
+                               PlaneClassify(&portal->plane);
+
+                               // link into leaf's portal chain
+                               portal->next = portal->here->portals;
+                               portal->here->portals = portal;
+
+                               // advance to next portal
+                               portal++;
+
+                               // then make the front to back portal(backward portal)
+                               portal->points = point;
+                               portal->numpoints = p->winding->numpoints;
+                               portal->plane.dist = -p->plane.dist;
+                               VectorNegate(p->plane.normal, portal->plane.normal);
+                               portal->here = (mleaf_t *)p->nodes[0];
+                               portal->past = (mleaf_t *)p->nodes[1];
+                               // copy points
+                               for (j = portal->numpoints - 1;j >= 0;j--)
+                               {
+                                       VectorCopy(p->winding->points[j], point->position);
+                                       point++;
+                               }
+                               PlaneClassify(&portal->plane);
+
+                               // link into leaf's portal chain
+                               portal->next = portal->here->portals;
+                               portal->here->portals = portal;
+
+                               // advance to next portal
+                               portal++;
+                       }
+                       Winding_Free(p->winding);
+               }
+               FreePortal(p);
+               p = pnext;
+       }
+}
+
+/*
+=============
+AddPortalToNodes
+=============
+*/
+static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
+{
+       if (!front)
+               Host_Error("AddPortalToNodes: NULL front node");
+       if (!back)
+               Host_Error("AddPortalToNodes: NULL back node");
+       if (p->nodes[0] || p->nodes[1])
+               Host_Error("AddPortalToNodes: already included");
+       // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
+
+       p->nodes[0] = front;
+       p->next[0] = (portal_t *)front->portals;
+       front->portals = (mportal_t *)p;
+
+       p->nodes[1] = back;
+       p->next[1] = (portal_t *)back->portals;
+       back->portals = (mportal_t *)p;
+}
+
+/*
+=============
+RemovePortalFromNode
+=============
+*/
+static void RemovePortalFromNodes(portal_t *portal)
+{
+       int i;
+       mnode_t *node;
+       void **portalpointer;
+       portal_t *t;
+       for (i = 0;i < 2;i++)
+       {
+               node = portal->nodes[i];
+
+               portalpointer = (void **) &node->portals;
+               while (1)
+               {
+                       t = *portalpointer;
+                       if (!t)
+                               Host_Error("RemovePortalFromNodes: portal not in leaf");
+
+                       if (t == portal)
+                       {
+                               if (portal->nodes[0] == node)
+                               {
+                                       *portalpointer = portal->next[0];
+                                       portal->nodes[0] = NULL;
+                               }
+                               else if (portal->nodes[1] == node)
+                               {
+                                       *portalpointer = portal->next[1];
+                                       portal->nodes[1] = NULL;
+                               }
+                               else
+                                       Host_Error("RemovePortalFromNodes: portal not bounding leaf");
+                               break;
+                       }
+
+                       if (t->nodes[0] == node)
+                               portalpointer = (void **) &t->next[0];
+                       else if (t->nodes[1] == node)
+                               portalpointer = (void **) &t->next[1];
+                       else
+                               Host_Error("RemovePortalFromNodes: portal not bounding leaf");
+               }
+       }
+}
+
+static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
+{
+       int side;
+       mnode_t *front, *back, *other_node;
+       mplane_t clipplane, *plane;
+       portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
+       winding_t *nodeportalwinding, *frontwinding, *backwinding;
+
+       // if a leaf, we're done
+       if (node->contents)
+               return;
+
+       plane = node->plane;
+
+       front = node->children[0];
+       back = node->children[1];
+       if (front == back)
+               Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
+
+       // create the new portal by generating a polygon for the node plane,
+       // and clipping it by all of the other portals(which came from nodes above this one)
+       nodeportal = AllocPortal();
+       nodeportal->plane = *plane;
+
+       nodeportalwinding = Winding_NewFromPlane(nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist);
+       side = 0;       // shut up compiler warning
+       for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
+       {
+               clipplane = portal->plane;
+               if (portal->nodes[0] == portal->nodes[1])
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
+               if (portal->nodes[0] == node)
+                       side = 0;
+               else if (portal->nodes[1] == node)
+               {
+                       clipplane.dist = -clipplane.dist;
+                       VectorNegate(clipplane.normal, clipplane.normal);
+                       side = 1;
+               }
+               else
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
+
+               nodeportalwinding = Winding_Clip(nodeportalwinding, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, true);
+               if (!nodeportalwinding)
+               {
+                       Con_Printf("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
+                       break;
+               }
+       }
+
+       if (nodeportalwinding)
+       {
+               // if the plane was not clipped on all sides, there was an error
+               nodeportal->winding = nodeportalwinding;
+               AddPortalToNodes(nodeportal, front, back);
+       }
+
+       // split the portals of this node along this node's plane and assign them to the children of this node
+       // (migrating the portals downward through the tree)
+       for (portal = (portal_t *)node->portals;portal;portal = nextportal)
+       {
+               if (portal->nodes[0] == portal->nodes[1])
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
+               if (portal->nodes[0] == node)
+                       side = 0;
+               else if (portal->nodes[1] == node)
+                       side = 1;
+               else
+                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
+               nextportal = portal->next[side];
+
+               other_node = portal->nodes[!side];
+               RemovePortalFromNodes(portal);
+
+               // cut the portal into two portals, one on each side of the node plane
+               Winding_Divide(portal->winding, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, &frontwinding, &backwinding);
+
+               if (!frontwinding)
+               {
+                       if (side == 0)
+                               AddPortalToNodes(portal, back, other_node);
+                       else
+                               AddPortalToNodes(portal, other_node, back);
+                       continue;
+               }
+               if (!backwinding)
+               {
+                       if (side == 0)
+                               AddPortalToNodes(portal, front, other_node);
+                       else
+                               AddPortalToNodes(portal, other_node, front);
+                       continue;
+               }
+
+               // the winding is split
+               splitportal = AllocPortal();
+               temp = splitportal->chain;
+               *splitportal = *portal;
+               splitportal->chain = temp;
+               splitportal->winding = backwinding;
+               Winding_Free(portal->winding);
+               portal->winding = frontwinding;
+
+               if (side == 0)
+               {
+                       AddPortalToNodes(portal, front, other_node);
+                       AddPortalToNodes(splitportal, back, other_node);
+               }
+               else
+               {
+                       AddPortalToNodes(portal, other_node, front);
+                       AddPortalToNodes(splitportal, other_node, back);
+               }
+       }
+
+       Mod_Q1BSP_RecursiveNodePortals(front);
+       Mod_Q1BSP_RecursiveNodePortals(back);
+}
+
+static void Mod_Q1BSP_MakePortals(void)
+{
+       portalchain = NULL;
+       Mod_Q1BSP_RecursiveNodePortals(loadmodel->brushq1.nodes);
+       Mod_Q1BSP_FinalizePortals();
+}
+
+static void Mod_Q1BSP_BuildSurfaceNeighbors(msurface_t *surfaces, int numsurfaces, mempool_t *mempool)
+{
+#if 0
+       int surfnum, vertnum, vertnum2, snum, vnum, vnum2;
+       msurface_t *surf, *s;
+       float *v0, *v1, *v2, *v3;
+       for (surf = surfaces, surfnum = 0;surfnum < numsurfaces;surf++, surfnum++)
+               surf->neighborsurfaces = Mem_Alloc(mempool, surf->poly_numverts * sizeof(msurface_t *));
+       for (surf = surfaces, surfnum = 0;surfnum < numsurfaces;surf++, surfnum++)
+       {
+               for (vertnum = surf->poly_numverts - 1, vertnum2 = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;vertnum2 < surf->poly_numverts;vertnum = vertnum2, vertnum2++, v0 = v1, v1 += 3)
+               {
+                       if (surf->neighborsurfaces[vertnum])
+                               continue;
+                       surf->neighborsurfaces[vertnum] = NULL;
+                       for (s = surfaces, snum = 0;snum < numsurfaces;s++, snum++)
+                       {
+                               if (s->poly_mins[0] > (surf->poly_maxs[0] + 1) || s->poly_maxs[0] < (surf->poly_mins[0] - 1)
+                                || s->poly_mins[1] > (surf->poly_maxs[1] + 1) || s->poly_maxs[1] < (surf->poly_mins[1] - 1)
+                                || s->poly_mins[2] > (surf->poly_maxs[2] + 1) || s->poly_maxs[2] < (surf->poly_mins[2] - 1)
+                                || s == surf)
+                                       continue;
+                               for (vnum = 0;vnum < s->poly_numverts;vnum++)
+                                       if (s->neighborsurfaces[vnum] == surf)
+                                               break;
+                               if (vnum < s->poly_numverts)
+                                       continue;
+                               for (vnum = s->poly_numverts - 1, vnum2 = 0, v2 = s->poly_verts + (s->poly_numverts - 1) * 3, v3 = s->poly_verts;vnum2 < s->poly_numverts;vnum = vnum2, vnum2++, v2 = v3, v3 += 3)
+                               {
+                                       if (s->neighborsurfaces[vnum] == NULL
+                                        && ((v0[0] == v2[0] && v0[1] == v2[1] && v0[2] == v2[2] && v1[0] == v3[0] && v1[1] == v3[1] && v1[2] == v3[2])
+                                         || (v1[0] == v2[0] && v1[1] == v2[1] && v1[2] == v2[2] && v0[0] == v3[0] && v0[1] == v3[1] && v0[2] == v3[2])))
+                                       {
+                                               surf->neighborsurfaces[vertnum] = s;
+                                               s->neighborsurfaces[vnum] = surf;
+                                               break;
+                                       }
+                               }
+                               if (vnum < s->poly_numverts)
+                                       break;
+                       }
                }
-               for (j=0 ; j<MAX_MAP_HULLS ; j++)
-                       out->headnode[j] = LittleLong (in->headnode[j]);
-               out->visleafs = LittleLong (in->visleafs);
-               out->firstface = LittleLong (in->firstface);
-               out->numfaces = LittleLong (in->numfaces);
        }
+#endif
 }
 
-/*
-=================
-Mod_LoadEdges
-=================
-*/
-static void Mod_LoadEdges (lump_t *l)
+static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
 {
-       dedge_t *in;
-       medge_t *out;
-       int     i, count;
-
-       in = (void *)(mod_base + l->fileofs);
-       if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
-       count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
-
-       loadmodel->edges = out;
-       loadmodel->numedges = count;
-
-       for ( i=0 ; i<count ; i++, in++, out++)
+       int i, j, stylecounts[256], totalcount, remapstyles[256];
+       msurface_t *surf;
+       memset(stylecounts, 0, sizeof(stylecounts));
+       for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
        {
-               out->v[0] = (unsigned short)LittleShort(in->v[0]);
-               out->v[1] = (unsigned short)LittleShort(in->v[1]);
+               surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface + i;
+               for (j = 0;j < MAXLIGHTMAPS;j++)
+                       stylecounts[surf->styles[j]]++;
+       }
+       totalcount = 0;
+       model->brushq1.light_styles = 0;
+       for (i = 0;i < 255;i++)
+       {
+               if (stylecounts[i])
+               {
+                       remapstyles[i] = model->brushq1.light_styles++;
+                       totalcount += stylecounts[i] + 1;
+               }
+       }
+       if (!totalcount)
+               return;
+       model->brushq1.light_style = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(qbyte));
+       model->brushq1.light_stylevalue = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
+       model->brushq1.light_styleupdatechains = Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
+       model->brushq1.light_styleupdatechainsbuffer = Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
+       model->brushq1.light_styles = 0;
+       for (i = 0;i < 255;i++)
+               if (stylecounts[i])
+                       model->brushq1.light_style[model->brushq1.light_styles++] = i;
+       j = 0;
+       for (i = 0;i < model->brushq1.light_styles;i++)
+       {
+               model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
+               j += stylecounts[model->brushq1.light_style[i]] + 1;
+       }
+       for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
+       {
+               surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface + i;
+               for (j = 0;j < MAXLIGHTMAPS;j++)
+                       if (surf->styles[j] != 255)
+                               *model->brushq1.light_styleupdatechains[remapstyles[surf->styles[j]]]++ = surf;
+       }
+       j = 0;
+       for (i = 0;i < model->brushq1.light_styles;i++)
+       {
+               *model->brushq1.light_styleupdatechains[i] = NULL;
+               model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
+               j += stylecounts[model->brushq1.light_style[i]] + 1;
        }
 }
 
-/*
-=================
-Mod_LoadTexinfo
-=================
-*/
-static void Mod_LoadTexinfo (lump_t *l)
+static void Mod_Q1BSP_BuildPVSTextureChains(model_t *model)
 {
-       texinfo_t *in;
-       mtexinfo_t *out;
-       int i, j, k, count, miptex;
-
-       in = (void *)(mod_base + l->fileofs);
-       if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
-       count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
-
-       loadmodel->texinfo = out;
-       loadmodel->numtexinfo = count;
-
-       for (i = 0;i < count;i++, in++, out++)
+       int i, j;
+       for (i = 0;i < model->brushq1.numtextures;i++)
+               model->brushq1.pvstexturechainslength[i] = 0;
+       for (i = 0, j = model->brushq1.firstmodelsurface;i < model->brushq1.nummodelsurfaces;i++, j++)
        {
-               for (k = 0;k < 2;k++)
-                       for (j = 0;j < 4;j++)
-                               out->vecs[k][j] = LittleFloat (in->vecs[k][j]);
-
-               miptex = LittleLong (in->miptex);
-               out->flags = LittleLong (in->flags);
-
-               out->texture = NULL;
-               if (loadmodel->textures)
+               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
                {
-                       if ((unsigned int) miptex >= (unsigned int) loadmodel->numtextures)
-                               Con_Printf ("error in model \"%s\": invalid miptex index %i (of %i)\n", loadmodel->name, miptex, loadmodel->numtextures);
-                       else
-                               out->texture = loadmodel->textures + miptex;
+                       model->brushq1.pvssurflist[model->brushq1.pvssurflistlength++] = j;
+                       model->brushq1.pvstexturechainslength[model->brushq1.surfaces[j].texinfo->texture->number]++;
                }
-               if (out->flags & TEX_SPECIAL)
+       }
+       for (i = 0, j = 0;i < model->brushq1.numtextures;i++)
+       {
+               if (model->brushq1.pvstexturechainslength[i])
                {
-                       // if texture chosen is NULL or the shader needs a lightmap,
-                       // force to notexture water shader
-                       if (out->texture == NULL || out->texture->shader->flags & SHADERFLAGS_NEEDLIGHTMAP)
-                               out->texture = loadmodel->textures + (loadmodel->numtextures - 1);
+                       model->brushq1.pvstexturechains[i] = model->brushq1.pvstexturechainsbuffer + j;
+                       j += model->brushq1.pvstexturechainslength[i] + 1;
                }
                else
+                       model->brushq1.pvstexturechains[i] = NULL;
+       }
+       for (i = 0, j = model->brushq1.firstmodelsurface;i < model->brushq1.nummodelsurfaces;i++, j++)
+               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
+                       *model->brushq1.pvstexturechains[model->brushq1.surfaces[j].texinfo->texture->number]++ = model->brushq1.surfaces + j;
+       for (i = 0;i < model->brushq1.numtextures;i++)
+       {
+               if (model->brushq1.pvstexturechainslength[i])
                {
-                       // if texture chosen is NULL, force to notexture
-                       if (out->texture == NULL)
-                               out->texture = loadmodel->textures + (loadmodel->numtextures - 2);
+                       *model->brushq1.pvstexturechains[i] = NULL;
+                       model->brushq1.pvstexturechains[i] -= model->brushq1.pvstexturechainslength[i];
                }
        }
 }
 
-/*
-================
-CalcSurfaceExtents
-
-Fills in s->texturemins[] and s->extents[]
-================
-*/
-static void CalcSurfaceExtents (msurface_t *s)
+static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, mnode_t *node)
 {
-       float   mins[2], maxs[2], val;
-       int             i,j, e;
-       mvertex_t       *v;
-       mtexinfo_t      *tex;
-       int             bmins[2], bmaxs[2];
-
-       mins[0] = mins[1] = 999999999;
-       maxs[0] = maxs[1] = -999999999;
-
-       tex = s->texinfo;
+       int i;
+       float d;
 
-       for (i=0 ; i<s->numedges ; i++)
+       while (node->contents >= 0)
        {
-               e = loadmodel->surfedges[s->firstedge+i];
-               if (e >= 0)
-                       v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
+               d = PlaneDiff(org, node->plane);
+               if (d > radius)
+                       node = node->children[0];
+               else if (d < -radius)
+                       node = node->children[1];
                else
-                       v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
-
-               for (j=0 ; j<2 ; j++)
                {
-                       val = v->position[0] * tex->vecs[j][0] +
-                               v->position[1] * tex->vecs[j][1] +
-                               v->position[2] * tex->vecs[j][2] +
-                               tex->vecs[j][3];
-                       if (val < mins[j])
-                               mins[j] = val;
-                       if (val > maxs[j])
-                               maxs[j] = val;
+                       // go down both sides
+                       Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
+                       node = node->children[1];
                }
        }
+       // FIXME: code!
+       // if this is a leaf, accumulate the pvs bits
+       if (node->contents != CONTENTS_SOLID && ((mleaf_t *)node)->pvsdata)
+               for (i = 0;i < pvsbytes;i++)
+                       pvsbuffer[i] |= ((mleaf_t *)node)->pvsdata[i];
+}
 
-       for (i=0 ; i<2 ; i++)
-       {
-               bmins[i] = floor(mins[i]/16);
-               bmaxs[i] = ceil(maxs[i]/16);
-
-               s->texturemins[i] = bmins[i] * 16;
-               s->extents[i] = (bmaxs[i] - bmins[i]) * 16;
-       }
+//Calculates a PVS that is the inclusive or of all leafs within radius pixels
+//of the given point.
+static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
+{
+       int bytes = ((model->brushq1.numleafs - 1) + 7) >> 3;
+       bytes = min(bytes, pvsbufferlength);
+       memset(pvsbuffer, 0, bytes);
+       Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brushq1.nodes);
+       return bytes;
 }
 
+//Returns PVS data for a given point
+//(note: always returns valid data, never NULL)
+static qbyte *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
+{
+       mnode_t *node;
+       Mod_CheckLoaded(model);
+       // LordHavoc: modified to start at first clip node,
+       // in other words: first node of the (sub)model
+       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
+       while (node->contents == 0)
+               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
+       return ((mleaf_t *)node)->pvsdata;
+}
 
-void BoundPoly (int numverts, float *verts, vec3_t mins, vec3_t maxs)
+static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
 {
-       int             i, j;
-       float   *v;
+       vec3_t size;
+       const hull_t *hull;
 
-       mins[0] = mins[1] = mins[2] = 9999;
-       maxs[0] = maxs[1] = maxs[2] = -9999;
-       v = verts;
-       for (i = 0;i < numverts;i++)
+       VectorSubtract(inmaxs, inmins, size);
+       if (cmodel->brush.ishlbsp)
        {
-               for (j = 0;j < 3;j++, v++)
+               if (size[0] < 3)
+                       hull = &cmodel->brushq1.hulls[0]; // 0x0x0
+               else if (size[0] <= 32)
                {
-                       if (*v < mins[j])
-                               mins[j] = *v;
-                       if (*v > maxs[j])
-                               maxs[j] = *v;
+                       if (size[2] < 54) // pick the nearest of 36 or 72
+                               hull = &cmodel->brushq1.hulls[3]; // 32x32x36
+                       else
+                               hull = &cmodel->brushq1.hulls[1]; // 32x32x72
                }
+               else
+                       hull = &cmodel->brushq1.hulls[2]; // 64x64x64
+       }
+       else
+       {
+               if (size[0] < 3)
+                       hull = &cmodel->brushq1.hulls[0]; // 0x0x0
+               else if (size[0] <= 32)
+                       hull = &cmodel->brushq1.hulls[1]; // 32x32x56
+               else
+                       hull = &cmodel->brushq1.hulls[2]; // 64x64x88
        }
+       VectorCopy(inmins, outmins);
+       VectorAdd(inmins, hull->clip_size, outmaxs);
 }
 
-#if 0
-#define MAX_SUBDIVPOLYTRIANGLES 4096
-#define MAX_SUBDIVPOLYVERTS (MAX_SUBDIVPOLYTRIANGLES * 3)
-
-static int subdivpolyverts, subdivpolytriangles;
-static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
-static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
-
-static int subdivpolylookupvert(vec3_t v)
+extern void R_Model_Brush_DrawSky(entity_render_t *ent);
+extern void R_Model_Brush_Draw(entity_render_t *ent);
+extern void R_Model_Brush_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
+extern void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
+void Mod_Q1BSP_Load(model_t *mod, void *buffer)
 {
-       int i;
-       for (i = 0;i < subdivpolyverts;i++)
-               if (subdivpolyvert[i][0] == v[0]
-                && subdivpolyvert[i][1] == v[1]
-                && subdivpolyvert[i][2] == v[2])
-                       return i;
-       if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
-               Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
-       VectorCopy(v, subdivpolyvert[subdivpolyverts]);
-       return subdivpolyverts++;
-}
+       int i, j, k;
+       dheader_t *header;
+       dmodel_t *bm;
+       mempool_t *mainmempool;
+       char *loadname;
+       model_t *originalloadmodel;
+       float dist, modelyawradius, modelradius, *vec;
+       msurface_t *surf;
 
-static void SubdividePolygon (int numverts, float *verts)
-{
-       int             i, i1, i2, i3, f, b, c, p;
-       vec3_t  mins, maxs, front[256], back[256];
-       float   m, *pv, *cv, dist[256], frac;
+       mod->type = mod_brush;
 
-       if (numverts > 250)
-               Host_Error ("SubdividePolygon: ran out of verts in buffer");
+       header = (dheader_t *)buffer;
 
-       BoundPoly (numverts, verts, mins, maxs);
+       i = LittleLong(header->version);
+       if (i != BSPVERSION && i != 30)
+               Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife))", mod->name, i, BSPVERSION);
+       mod->brush.ishlbsp = i == 30;
+
+       mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
+       mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
+       mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
+       mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
+       mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
+       mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
+       mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
+       mod->brush.TraceBox = Mod_Q1BSP_TraceBox;
+       mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
+       mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
+       mod->brushq1.PointInLeaf = Mod_Q1BSP_PointInLeaf;
+       mod->brushq1.BuildPVSTextureChains = Mod_Q1BSP_BuildPVSTextureChains;
 
-       for (i = 0;i < 3;i++)
+       if (loadmodel->isworldmodel)
        {
-               m = (mins[i] + maxs[i]) * 0.5;
-               m = r_subdivide_size.value * floor (m/r_subdivide_size.value + 0.5);
-               if (maxs[i] - m < 8)
-                       continue;
-               if (m - mins[i] < 8)
-                       continue;
-
-               // cut it
-               for (cv = verts, c = 0;c < numverts;c++, cv += 3)
-                       dist[c] = cv[i] - m;
-
-               f = b = 0;
-               for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
-               {
-                       if (dist[p] >= 0)
-                       {
-                               VectorCopy (pv, front[f]);
-                               f++;
-                       }
-                       if (dist[p] <= 0)
-                       {
-                               VectorCopy (pv, back[b]);
-                               b++;
-                       }
-                       if (dist[p] == 0 || dist[c] == 0)
-                               continue;
-                       if ( (dist[p] > 0) != (dist[c] > 0) )
-                       {
-                               // clip point
-                               frac = dist[p] / (dist[p] - dist[c]);
-                               front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
-                               front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
-                               front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
-                               f++;
-                               b++;
-                       }
-               }
-
-               SubdividePolygon (f, front[0]);
-               SubdividePolygon (b, back[0]);
-               return;
+               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               // until we get a texture for it...
+               R_ResetQuakeSky();
        }
 
-       i1 = subdivpolylookupvert(verts);
-       i2 = subdivpolylookupvert(verts + 3);
-       for (i = 2;i < numverts;i++)
-       {
-               if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
-               {
-                       Con_Printf("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
-                       return;
-               }
+// swap all the lumps
+       mod_base = (qbyte *)header;
 
-               i3 = subdivpolylookupvert(verts + i * 3);
-               subdivpolyindex[subdivpolytriangles][0] = i1;
-               subdivpolyindex[subdivpolytriangles][1] = i2;
-               subdivpolyindex[subdivpolytriangles][2] = i3;
-               i2 = i3;
-               subdivpolytriangles++;
-       }
-}
+       for (i = 0;i < (int) sizeof(dheader_t) / 4;i++)
+               ((int *)header)[i] = LittleLong(((int *)header)[i]);
 
-/*
-================
-Mod_GenerateWarpMesh
+// load into heap
 
-Breaks a polygon up along axial 64 unit
-boundaries so that turbulent and sky warps
-can be done reasonably.
-================
-*/
-void Mod_GenerateWarpMesh (msurface_t *surf)
-{
-       int i, j;
-       surfvertex_t *v;
-       surfmesh_t *mesh;
+       // store which lightmap format to use
+       mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
+
+       Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
+       Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
+       Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
+       Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
+       Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
+       Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
+       Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
+       Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
+       Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
+       Mod_Q1BSP_LoadMarksurfaces(&header->lumps[LUMP_MARKSURFACES]);
+       Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
+       Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
+       Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
+       Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES]);
+       Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS]);
+
+       if (mod->brushq1.data_compressedpvs)
+               Mem_Free(mod->brushq1.data_compressedpvs);
+       mod->brushq1.data_compressedpvs = NULL;
+       mod->brushq1.num_compressedpvs = 0;
+
+       Mod_Q1BSP_MakeHull0();
+       Mod_Q1BSP_MakePortals();
+
+       if (developer.integer)
+               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->brushq1.numsurfaces, loadmodel->brushq1.numnodes, loadmodel->brushq1.numleafs, loadmodel->brushq1.numleafs - 1, loadmodel->brushq1.numportals);
 
-       subdivpolytriangles = 0;
-       subdivpolyverts = 0;
-       SubdividePolygon (surf->poly_numverts, surf->poly_verts);
-       if (subdivpolytriangles < 1)
-               Host_Error("Mod_GenerateWarpMesh: no triangles?\n");
+       mod->numframes = 2;             // regular and alternate animation
 
-       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
-       mesh->numverts = subdivpolyverts;
-       mesh->numtriangles = subdivpolytriangles;
-       mesh->vertex = (surfvertex_t *)(mesh + 1);
-       mesh->index = (int *)(mesh->vertex + mesh->numverts);
-       memset(mesh->vertex, 0, mesh->numverts * sizeof(surfvertex_t));
+       mainmempool = mod->mempool;
+       loadname = mod->name;
 
-       for (i = 0;i < mesh->numtriangles;i++)
-               for (j = 0;j < 3;j++)
-                       mesh->index[i*3+j] = subdivpolyindex[i][j];
+       Mod_Q1BSP_LoadLightList();
+       originalloadmodel = loadmodel;
 
-       for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
+//
+// set up the submodels(FIXME: this is confusing)
+//
+       for (i = 0;i < mod->brush.numsubmodels;i++)
        {
-               VectorCopy(subdivpolyvert[i], v->v);
-               v->st[0] = DotProduct (v->v, surf->texinfo->vecs[0]);
-               v->st[1] = DotProduct (v->v, surf->texinfo->vecs[1]);
-       }
-}
-#endif
-
-surfmesh_t *Mod_AllocSurfMesh(int numverts, int numtriangles)
-{
-       surfmesh_t *mesh;
-       mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + numtriangles * sizeof(int[6]) + numverts * (4 + 4 + 4 + 4 + 4 + 4 + 4 + 1) * sizeof(float));
-       mesh->numverts = numverts;
-       mesh->numtriangles = numtriangles;
-       mesh->verts = (float *)(mesh + 1);
-       mesh->str = mesh->verts + mesh->numverts * 4;
-       mesh->uvw = mesh->str + mesh->numverts * 4;
-       mesh->abc = mesh->uvw + mesh->numverts * 4;
-       mesh->svectors = (float *)(mesh->abc + mesh->numverts * 4);
-       mesh->tvectors = mesh->svectors + mesh->numverts * 4;
-       mesh->normals = mesh->tvectors + mesh->numverts * 4;
-       mesh->lightmapoffsets = (int *)(mesh->normals + mesh->numverts * 4);
-       mesh->index = mesh->lightmapoffsets + mesh->numverts;
-       mesh->triangleneighbors = mesh->index + mesh->numtriangles * 3;
-       return mesh;
-}
+               bm = &mod->brushq1.submodels[i];
 
-void Mod_GenerateWallMesh (msurface_t *surf, int vertexonly)
-{
-       int i, iu, iv, *index, smax, tmax;
-       float *in, s, t, u, v, ubase, vbase, uscale, vscale, normal[3];
-       surfmesh_t *mesh;
+               mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
+               for (j=1 ; j<MAX_MAP_HULLS ; j++)
+               {
+                       mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
+                       mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
+               }
 
-       smax = surf->extents[0] >> 4;
-       tmax = surf->extents[1] >> 4;
+               mod->brushq1.firstmodelsurface = bm->firstface;
+               mod->brushq1.nummodelsurfaces = bm->numfaces;
 
-       if (vertexonly)
-       {
-               surf->lightmaptexturestride = 0;
-               surf->lightmaptexture = NULL;
-               uscale = 0;
-               vscale = 0;
-               ubase = 0;
-               vbase = 0;
-       }
-       else
-       {
-               surf->flags |= SURF_LIGHTMAP;
-               if (r_miplightmaps.integer)
+               // this gets altered below if sky is used
+               mod->DrawSky = NULL;
+               mod->Draw = R_Model_Brush_Draw;
+               mod->DrawShadowVolume = R_Model_Brush_DrawShadowVolume;
+               mod->DrawLight = R_Model_Brush_DrawLight;
+               mod->brushq1.pvstexturechains = Mem_Alloc(originalloadmodel->mempool, mod->brushq1.numtextures * sizeof(msurface_t **));
+               mod->brushq1.pvstexturechainsbuffer = Mem_Alloc(originalloadmodel->mempool,(mod->brushq1.nummodelsurfaces + mod->brushq1.numtextures) * sizeof(msurface_t *));
+               mod->brushq1.pvstexturechainslength = Mem_Alloc(originalloadmodel->mempool, mod->brushq1.numtextures * sizeof(int));
+               Mod_Q1BSP_BuildPVSTextureChains(mod);
+               Mod_Q1BSP_BuildLightmapUpdateChains(originalloadmodel->mempool, mod);
+               if (mod->brushq1.nummodelsurfaces)
                {
-                       surf->lightmaptexturestride = (surf->extents[0]>>4)+1;
-                       surf->lightmaptexture = R_LoadTexture(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_PRECACHE);
+                       // LordHavoc: calculate bmodel bounding box rather than trusting what it says
+                       mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
+                       mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
+                       modelyawradius = 0;
+                       modelradius = 0;
+                       for (j = 0, surf = &mod->brushq1.surfaces[mod->brushq1.firstmodelsurface];j < mod->brushq1.nummodelsurfaces;j++, surf++)
+                       {
+                               // we only need to have a drawsky function if it is used(usually only on world model)
+                               if (surf->texinfo->texture->shader == &Cshader_sky)
+                                       mod->DrawSky = R_Model_Brush_DrawSky;
+                               // LordHavoc: submodels always clip, even if water
+                               if (mod->brush.numsubmodels - 1)
+                                       surf->flags |= SURF_SOLIDCLIP;
+                               // calculate bounding shapes
+                               for (k = 0, vec = surf->mesh.data_vertex3f;k < surf->mesh.num_vertices;k++, vec += 3)
+                               {
+                                       if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
+                                       if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
+                                       if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
+                                       if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
+                                       if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
+                                       if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
+                                       dist = vec[0]*vec[0]+vec[1]*vec[1];
+                                       if (modelyawradius < dist)
+                                               modelyawradius = dist;
+                                       dist += vec[2]*vec[2];
+                                       if (modelradius < dist)
+                                               modelradius = dist;
+                               }
+                       }
+                       modelyawradius = sqrt(modelyawradius);
+                       modelradius = sqrt(modelradius);
+                       mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
+                       mod->yawmins[2] = mod->normalmins[2];
+                       mod->yawmaxs[2] = mod->normalmaxs[2];
+                       mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
+                       mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
+                       mod->radius = modelradius;
+                       mod->radius2 = modelradius * modelradius;
                }
                else
                {
-                       surf->lightmaptexturestride = R_CompatibleFragmentWidth((surf->extents[0]>>4)+1, loadmodel->lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
-                       surf->lightmaptexture = R_LoadTexture(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_PRECACHE);
+                       // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
+                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadname);
                }
-               R_FragmentLocation(surf->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
-               uscale = (uscale - ubase) * 16.0 / ((surf->extents[0] & ~15) + 16);
-               vscale = (vscale - vbase) * 16.0 / ((surf->extents[1] & ~15) + 16);
-       }
+               Mod_Q1BSP_BuildSurfaceNeighbors(mod->brushq1.surfaces + mod->brushq1.firstmodelsurface, mod->brushq1.nummodelsurfaces, originalloadmodel->mempool);
 
-       surf->mesh = mesh = Mod_AllocSurfMesh(surf->poly_numverts, surf->poly_numverts - 2);
+               mod->brushq1.visleafs = bm->visleafs;
 
-       index = mesh->index;
-       for (i = 0;i < mesh->numtriangles;i++)
-       {
-               *index++ = 0;
-               *index++ = i + 1;
-               *index++ = i + 2;
+               // LordHavoc: only register submodels if it is the world
+               // (prevents bsp models from replacing world submodels)
+               if (loadmodel->isworldmodel && i < (mod->brush.numsubmodels - 1))
+               {
+                       char    name[10];
+                       // duplicate the basic information
+                       sprintf(name, "*%i", i+1);
+                       loadmodel = Mod_FindName(name);
+                       *loadmodel = *mod;
+                       strcpy(loadmodel->name, name);
+                       // textures and memory belong to the main model
+                       loadmodel->texturepool = NULL;
+                       loadmodel->mempool = NULL;
+                       mod = loadmodel;
+               }
        }
-       Mod_BuildTriangleNeighbors(mesh->triangleneighbors, mesh->index, mesh->numtriangles);
-
-       VectorCopy(surf->plane->normal, normal);
-       if (surf->flags & SURF_PLANEBACK)
-               VectorNegate(normal, normal);
-       for (i = 0, in = surf->poly_verts;i < mesh->numverts;i++, in += 3)
-       {
-               s = DotProduct (in, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
-               t = DotProduct (in, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
-               u = (s + 8 - surf->texturemins[0]) * (1.0 / 16.0);
-               v = (t + 8 - surf->texturemins[1]) * (1.0 / 16.0);
-               // LordHavoc: calc lightmap data offset for vertex lighting to use
-               iu = (int) u;
-               iv = (int) v;
-               iu = bound(0, iu, smax);
-               iv = bound(0, iv, tmax);
-               u = u * uscale + ubase;
-               v = v * vscale + vbase;
 
-               mesh->verts[i * 4 + 0] = in[0];
-               mesh->verts[i * 4 + 1] = in[1];
-               mesh->verts[i * 4 + 2] = in[2];
-               mesh->str[i * 4 + 0] = s / surf->texinfo->texture->width;
-               mesh->str[i * 4 + 1] = t / surf->texinfo->texture->height;
-               mesh->uvw[i * 4 + 0] = u;
-               mesh->uvw[i * 4 + 1] = v;
-               mesh->abc[i * 4 + 0] = s * (1.0f / 16.0f);
-               mesh->abc[i * 4 + 1] = t * (1.0f / 16.0f);
-               mesh->lightmapoffsets[i] = ((iv * (smax+1) + iu) * 3);
-       }
-       Mod_BuildTextureVectorsAndNormals(mesh->numverts, mesh->numtriangles, mesh->verts, mesh->str, mesh->index, mesh->svectors, mesh->tvectors, mesh->normals);
+       loadmodel = originalloadmodel;
+       //Mod_Q1BSP_ProcessLightList();
 }
 
-void Mod_GenerateVertexMesh (msurface_t *surf)
+static void Mod_Q2BSP_LoadEntities(lump_t *l)
 {
-       int i, *index;
-       float *in, s, t, normal[3];
-       surfmesh_t *mesh;
+}
 
-       surf->lightmaptexturestride = 0;
-       surf->lightmaptexture = NULL;
+static void Mod_Q2BSP_LoadPlanes(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-       surf->mesh = mesh = Mod_AllocSurfMesh(surf->poly_numverts, surf->poly_numverts - 2);
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       index = mesh->index;
-       for (i = 0;i < mesh->numtriangles;i++)
-       {
-               *index++ = 0;
-               *index++ = i + 1;
-               *index++ = i + 2;
-       }
-       Mod_BuildTriangleNeighbors(mesh->triangleneighbors, mesh->index, mesh->numtriangles);
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       VectorCopy(surf->plane->normal, normal);
-       if (surf->flags & SURF_PLANEBACK)
-               VectorNegate(normal, normal);
-       for (i = 0, in = surf->poly_verts;i < mesh->numverts;i++, in += 3)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               s = (DotProduct (in, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]);
-               t = (DotProduct (in, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]);
-               mesh->verts[i * 4 + 0] = in[0];
-               mesh->verts[i * 4 + 1] = in[1];
-               mesh->verts[i * 4 + 2] = in[2];
-               mesh->str[i * 4 + 0] = s / surf->texinfo->texture->width;
-               mesh->str[i * 4 + 1] = t / surf->texinfo->texture->height;
-               mesh->uvw[i * 4 + 0] = 0;
-               mesh->uvw[i * 4 + 1] = 0;
-               mesh->abc[i * 4 + 0] = s * (1.0f / 16.0f);
-               mesh->abc[i * 4 + 1] = t * (1.0f / 16.0f);
        }
-       Mod_BuildTextureVectorsAndNormals(mesh->numverts, mesh->numtriangles, mesh->verts, mesh->str, mesh->index, mesh->svectors, mesh->tvectors, mesh->normals);
+*/
 }
 
-void Mod_GenerateSurfacePolygon (msurface_t *surf)
+static void Mod_Q2BSP_LoadVertices(lump_t *l)
 {
-       int i, lindex;
-       float *vec, *vert, mins[3], maxs[3], temp[3], dist;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-       // convert edges back to a normal polygon
-       surf->poly_numverts = surf->numedges;
-       vert = surf->poly_verts = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * surf->numedges);
-       for (i = 0;i < surf->numedges;i++)
-       {
-               lindex = loadmodel->surfedges[surf->firstedge + i];
-               if (lindex > 0)
-                       vec = loadmodel->vertexes[loadmodel->edges[lindex].v[0]].position;
-               else
-                       vec = loadmodel->vertexes[loadmodel->edges[-lindex].v[1]].position;
-               VectorCopy (vec, vert);
-               vert += 3;
-       }
-       vert = surf->poly_verts;
-       VectorCopy(vert, mins);
-       VectorCopy(vert, maxs);
-       vert += 3;
-       for (i = 1;i < surf->poly_numverts;i++)
-       {
-               if (mins[0] > vert[0]) mins[0] = vert[0];if (maxs[0] < vert[0]) maxs[0] = vert[0];
-               if (mins[1] > vert[1]) mins[1] = vert[1];if (maxs[1] < vert[1]) maxs[1] = vert[1];
-               if (mins[2] > vert[2]) mins[2] = vert[2];if (maxs[2] < vert[2]) maxs[2] = vert[2];
-               vert += 3;
-       }
-       VectorCopy(mins, surf->poly_mins);
-       VectorCopy(maxs, surf->poly_maxs);
-       surf->poly_center[0] = (mins[0] + maxs[0]) * 0.5f;
-       surf->poly_center[1] = (mins[1] + maxs[1]) * 0.5f;
-       surf->poly_center[2] = (mins[2] + maxs[2]) * 0.5f;
-       surf->poly_radius2 = 0;
-       vert = surf->poly_verts;
-       for (i = 0;i < surf->poly_numverts;i++)
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+
+       loadmodel-> = out;
+       loadmodel->num = count;
+
+       for (i = 0;i < count;i++, in++, out++)
        {
-               VectorSubtract(vert, surf->poly_center, temp);
-               dist = DotProduct(temp, temp);
-               if (surf->poly_radius2 < dist)
-                       surf->poly_radius2 = dist;
-               vert += 3;
        }
-       surf->poly_radius = sqrt(surf->poly_radius2);
+*/
 }
 
-/*
-=================
-Mod_LoadFaces
-=================
-*/
-static void Mod_LoadFaces (lump_t *l)
+static void Mod_Q2BSP_LoadVisibility(lump_t *l)
 {
-       dface_t *in;
-       msurface_t      *out;
-       int i, count, surfnum, planenum, ssize, tsize;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->surfaces = out;
-       loadmodel->numsurfaces = count;
-       loadmodel->surfacevisframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
-       loadmodel->surfacepvsframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for (surfnum = 0;surfnum < count;surfnum++, in++, out++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               out->number = surfnum;
-               // FIXME: validate edges, texinfo, etc?
-               out->firstedge = LittleLong(in->firstedge);
-               out->numedges = LittleShort(in->numedges);
-               if ((unsigned int) out->firstedge + (unsigned int) out->numedges > (unsigned int) loadmodel->numsurfedges)
-                       Host_Error("Mod_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)\n", out->firstedge, out->numedges, loadmodel->numsurfedges);
-
-               i = LittleShort (in->texinfo);
-               if ((unsigned int) i >= (unsigned int) loadmodel->numtexinfo)
-                       Host_Error("Mod_LoadFaces: invalid texinfo index %i (model has %i texinfos)\n", i, loadmodel->numtexinfo);
-               out->texinfo = loadmodel->texinfo + i;
-               out->flags = out->texinfo->texture->flags;
-
-               planenum = LittleShort(in->planenum);
-               if ((unsigned int) planenum >= (unsigned int) loadmodel->numplanes)
-                       Host_Error("Mod_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->numplanes);
+       }
+*/
+}
 
-               if (LittleShort(in->side))
-                       out->flags |= SURF_PLANEBACK;
+static void Mod_Q2BSP_LoadNodes(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-               out->plane = loadmodel->planes + planenum;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               // clear lightmap (filled in later)
-               out->lightmaptexture = NULL;
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-               // force lightmap upload on first time seeing the surface
-               out->cached_dlight = true;
+       for (i = 0;i < count;i++, in++, out++)
+       {
+       }
+*/
+}
 
-               CalcSurfaceExtents (out);
+static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-               ssize = (out->extents[0] >> 4) + 1;
-               tsize = (out->extents[1] >> 4) + 1;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               // lighting info
-               for (i = 0;i < MAXLIGHTMAPS;i++)
-                       out->styles[i] = in->styles[i];
-               i = LittleLong(in->lightofs);
-               if (i == -1)
-                       out->samples = NULL;
-               else if (loadmodel->ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
-                       out->samples = loadmodel->lightdata + i;
-               else // LordHavoc: white lighting (bsp version 29)
-                       out->samples = loadmodel->lightdata + (i * 3);
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-               Mod_GenerateSurfacePolygon(out);
-               if (out->texinfo->texture->shader == &Cshader_wall_lightmap)
-               {
-                       if ((out->extents[0] >> 4) + 1 > (256) || (out->extents[1] >> 4) + 1 > (256))
-                               Host_Error ("Bad surface extents");
-                       Mod_GenerateWallMesh (out, false);
-                       // stainmap for permanent marks on walls
-                       out->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
-                       // clear to white
-                       memset(out->stainsamples, 255, ssize * tsize * 3);
-               }
-               else
-                       Mod_GenerateVertexMesh (out);
+       for (i = 0;i < count;i++, in++, out++)
+       {
        }
-}
-
-/*
-=================
-Mod_SetParent
-=================
 */
-static void Mod_SetParent (mnode_t *node, mnode_t *parent)
-{
-       node->parent = parent;
-       if (node->contents < 0)
-               return;
-       Mod_SetParent (node->children[0], node);
-       Mod_SetParent (node->children[1], node);
 }
 
-/*
-=================
-Mod_LoadNodes
-=================
-*/
-static void Mod_LoadNodes (lump_t *l)
+static void Mod_Q2BSP_LoadFaces(lump_t *l)
 {
-       int                     i, j, count, p;
-       dnode_t         *in;
-       mnode_t         *out;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->nodes = out;
-       loadmodel->numnodes = count;
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for ( i=0 ; i<count ; i++, in++, out++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               for (j=0 ; j<3 ; j++)
-               {
-                       out->mins[j] = LittleShort (in->mins[j]);
-                       out->maxs[j] = LittleShort (in->maxs[j]);
-               }
+       }
+*/
+}
 
-               p = LittleLong(in->planenum);
-               out->plane = loadmodel->planes + p;
+static void Mod_Q2BSP_LoadLighting(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               out->firstsurface = LittleShort (in->firstface);
-               out->numsurfaces = LittleShort (in->numfaces);
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-               for (j=0 ; j<2 ; j++)
-               {
-                       p = LittleShort (in->children[j]);
-                       if (p >= 0)
-                               out->children[j] = loadmodel->nodes + p;
-                       else
-                               out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
-               }
+       for (i = 0;i < count;i++, in++, out++)
+       {
        }
-
-       Mod_SetParent (loadmodel->nodes, NULL); // sets nodes and leafs
+*/
 }
 
-/*
-=================
-Mod_LoadLeafs
-=================
-*/
-static void Mod_LoadLeafs (lump_t *l)
+static void Mod_Q2BSP_LoadLeafs(lump_t *l)
 {
-       dleaf_t         *in;
-       mleaf_t         *out;
-       int                     i, j, count, p;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->leafs = out;
-       loadmodel->numleafs = count;
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for ( i=0 ; i<count ; i++, in++, out++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               for (j=0 ; j<3 ; j++)
-               {
-                       out->mins[j] = LittleShort (in->mins[j]);
-                       out->maxs[j] = LittleShort (in->maxs[j]);
-               }
-
-               p = LittleLong(in->contents);
-               out->contents = p;
+       }
+*/
+}
 
-               out->firstmarksurface = loadmodel->marksurfaces +
-                       LittleShort(in->firstmarksurface);
-               out->nummarksurfaces = LittleShort(in->nummarksurfaces);
+static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-               p = LittleLong(in->visofs);
-               if (p == -1)
-                       out->compressed_vis = NULL;
-               else
-                       out->compressed_vis = loadmodel->visdata + p;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               for (j=0 ; j<4 ; j++)
-                       out->ambient_sound_level[j] = in->ambient_level[j];
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-               // FIXME: Insert caustics here
+       for (i = 0;i < count;i++, in++, out++)
+       {
        }
+*/
 }
 
-/*
-=================
-Mod_LoadClipnodes
-=================
-*/
-static void Mod_LoadClipnodes (lump_t *l)
+static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
 {
-       dclipnode_t *in, *out;
-       int                     i, count;
-       hull_t          *hull;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
+               Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->clipnodes = out;
-       loadmodel->numclipnodes = count;
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       if (loadmodel->ishlbsp)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               hull = &loadmodel->hulls[1];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -36;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 36;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+       }
+*/
+}
 
-               hull = &loadmodel->hulls[2];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->planes;
-               hull->clip_mins[0] = -32;
-               hull->clip_mins[1] = -32;
-               hull->clip_mins[2] = -32;
-               hull->clip_maxs[0] = 32;
-               hull->clip_maxs[1] = 32;
-               hull->clip_maxs[2] = 32;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+static void Mod_Q2BSP_LoadEdges(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-               hull = &loadmodel->hulls[3];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -18;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 18;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-       }
-       else
-       {
-               hull = &loadmodel->hulls[1];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->planes;
-               hull->clip_mins[0] = -16;
-               hull->clip_mins[1] = -16;
-               hull->clip_mins[2] = -24;
-               hull->clip_maxs[0] = 16;
-               hull->clip_maxs[1] = 16;
-               hull->clip_maxs[2] = 32;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               hull = &loadmodel->hulls[2];
-               hull->clipnodes = out;
-               hull->firstclipnode = 0;
-               hull->lastclipnode = count-1;
-               hull->planes = loadmodel->planes;
-               hull->clip_mins[0] = -32;
-               hull->clip_mins[1] = -32;
-               hull->clip_mins[2] = -24;
-               hull->clip_maxs[0] = 32;
-               hull->clip_maxs[1] = 32;
-               hull->clip_maxs[2] = 64;
-               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
-       }
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for (i=0 ; i<count ; i++, out++, in++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               out->planenum = LittleLong(in->planenum);
-               out->children[0] = LittleShort(in->children[0]);
-               out->children[1] = LittleShort(in->children[1]);
-               if (out->children[0] >= count || out->children[1] >= count)
-                       Host_Error("Corrupt clipping hull (out of range child)\n");
        }
+*/
 }
 
+static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
+{
 /*
-=================
-Mod_MakeHull0
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-Duplicate the drawing hull structure as a clipping hull
-=================
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+
+       loadmodel-> = out;
+       loadmodel->num = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+       {
+       }
 */
-static void Mod_MakeHull0 (void)
-{
-       mnode_t         *in;
-       dclipnode_t *out;
-       int                     i;
-       hull_t          *hull;
+}
 
-       hull = &loadmodel->hulls[0];
+static void Mod_Q2BSP_LoadBrushes(lump_t *l)
+{
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
-       in = loadmodel->nodes;
-       out = Mem_Alloc(loadmodel->mempool, loadmodel->numnodes * sizeof(dclipnode_t));
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       hull->clipnodes = out;
-       hull->firstclipnode = 0;
-       hull->lastclipnode = loadmodel->numnodes - 1;
-       hull->planes = loadmodel->planes;
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for (i = 0;i < loadmodel->numnodes;i++, out++, in++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               out->planenum = in->plane - loadmodel->planes;
-               out->children[0] = in->children[0]->contents < 0 ? in->children[0]->contents : in->children[0] - loadmodel->nodes;
-               out->children[1] = in->children[1]->contents < 0 ? in->children[1]->contents : in->children[1] - loadmodel->nodes;
        }
+*/
 }
 
-/*
-=================
-Mod_LoadMarksurfaces
-=================
-*/
-static void Mod_LoadMarksurfaces (lump_t *l)
+static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
 {
-       int i, j;
-       short *in;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
-       loadmodel->nummarksurfaces = l->filelen / sizeof(*in);
-       loadmodel->marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummarksurfaces * sizeof(int));
+               Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       for (i = 0;i < loadmodel->nummarksurfaces;i++)
+       loadmodel-> = out;
+       loadmodel->num = count;
+
+       for (i = 0;i < count;i++, in++, out++)
        {
-               j = (unsigned) LittleShort(in[i]);
-               if (j >= loadmodel->numsurfaces)
-                       Host_Error ("Mod_ParseMarksurfaces: bad surface number");
-               loadmodel->marksurfaces[i] = j;
        }
+*/
 }
 
-/*
-=================
-Mod_LoadSurfedges
-=================
-*/
-static void Mod_LoadSurfedges (lump_t *l)
+static void Mod_Q2BSP_LoadAreas(lump_t *l)
 {
-       int             i;
-       int             *in;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
-       loadmodel->numsurfedges = l->filelen / sizeof(*in);
-       loadmodel->surfedges = Mem_Alloc(loadmodel->mempool, loadmodel->numsurfedges * sizeof(int));
+               Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       for (i = 0;i < loadmodel->numsurfedges;i++)
-               loadmodel->surfedges[i] = LittleLong (in[i]);
-}
+       loadmodel-> = out;
+       loadmodel->num = count;
 
+       for (i = 0;i < count;i++, in++, out++)
+       {
+       }
+*/
+}
 
+static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
+{
 /*
-=================
-Mod_LoadPlanes
-=================
+       d_t *in;
+       m_t *out;
+       int i, count;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+
+       loadmodel-> = out;
+       loadmodel->num = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+       {
+       }
 */
-static void Mod_LoadPlanes (lump_t *l)
+}
+
+static void Mod_Q2BSP_LoadModels(lump_t *l)
 {
-       int                     i;
-       mplane_t        *out;
-       dplane_t        *in;
+/*
+       d_t *in;
+       m_t *out;
+       int i, count;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
-               Host_Error ("MOD_LoadBmodel: funny lump size in %s", loadmodel->name);
+               Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->numplanes = l->filelen / sizeof(*in);
-       loadmodel->planes = out = Mem_Alloc(loadmodel->mempool, loadmodel->numplanes * sizeof(*out));
+       loadmodel-> = out;
+       loadmodel->num = count;
 
-       for (i = 0;i < loadmodel->numplanes;i++, in++, out++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               out->normal[0] = LittleFloat (in->normal[0]);
-               out->normal[1] = LittleFloat (in->normal[1]);
-               out->normal[2] = LittleFloat (in->normal[2]);
-               out->dist = LittleFloat (in->dist);
+       }
+*/
+}
 
-               PlaneClassify(out);
+void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
+{
+       int i;
+       q2dheader_t *header;
+
+       Host_Error("Mod_Q2BSP_Load: not yet implemented\n");
+
+       mod->type = mod_brushq2;
+
+       header = (q2dheader_t *)buffer;
+
+       i = LittleLong(header->version);
+       if (i != Q2BSPVERSION)
+               Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
+       mod->brush.ishlbsp = false;
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               // until we get a texture for it...
+               R_ResetQuakeSky();
        }
+
+       mod_base = (qbyte *)header;
+
+       // swap all the lumps
+       for (i = 0;i < (int) sizeof(*header) / 4;i++)
+               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+
+       // store which lightmap format to use
+       mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
+
+       Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
+       Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
+       Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
+       Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
+       Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
+       Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
+       Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
+       Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
+       Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
+       Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
+       Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
+       Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
+       Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
+       Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
+       Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
+       Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
+       Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
+       // LordHavoc: must go last because this makes the submodels
+       Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
 }
 
-#define MAX_POINTS_ON_WINDING 64
+static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
+static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
 
-typedef struct
+static void Mod_Q3BSP_LoadEntities(lump_t *l)
 {
-       int numpoints;
-       int padding;
-       double points[8][3]; // variable sized
+       const char *data;
+       char key[128], value[4096];
+       float v[3];
+       loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
+       loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
+       loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
+       if (!l->filelen)
+               return;
+       loadmodel->brush.entities = Mem_Alloc(loadmodel->mempool, l->filelen);
+       memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
+       data = loadmodel->brush.entities;
+       // some Q3 maps override the lightgrid_cellsize with a worldspawn key
+       if (data && COM_ParseToken(&data, false) && com_token[0] == '{')
+       {
+               while (1)
+               {
+                       if (!COM_ParseToken(&data, false))
+                               break; // error
+                       if (com_token[0] == '}')
+                               break; // end of worldspawn
+                       if (com_token[0] == '_')
+                               strcpy(key, com_token + 1);
+                       else
+                               strcpy(key, com_token);
+                       while (key[strlen(key)-1] == ' ') // remove trailing spaces
+                               key[strlen(key)-1] = 0;
+                       if (!COM_ParseToken(&data, false))
+                               break; // error
+                       strcpy(value, com_token);
+                       if (!strcmp("gridsize", key))
+                       {
+                               if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
+                                       VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
+                       }
+               }
+       }
 }
-winding_t;
 
-/*
-==================
-NewWinding
-==================
-*/
-static winding_t *NewWinding (int points)
+static void Mod_Q3BSP_LoadTextures(lump_t *l)
 {
-       winding_t *w;
-       int size;
+       q3dtexture_t *in;
+       q3mtexture_t *out;
+       int i, count;
 
-       if (points > MAX_POINTS_ON_WINDING)
-               Sys_Error("NewWinding: too many points\n");
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       size = sizeof(winding_t) + sizeof(double[3]) * (points - 8);
-       w = Mem_Alloc(loadmodel->mempool, size);
-       memset (w, 0, size);
+       loadmodel->brushq3.data_textures = out;
+       loadmodel->brushq3.num_textures = count;
 
-       return w;
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               strlcpy (out->name, in->name, sizeof (out->name));
+               out->surfaceflags = LittleLong(in->surfaceflags);
+               out->nativecontents = LittleLong(in->contents);
+               out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, out->nativecontents);
+               out->renderflags = 0;
+               if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk"))
+                       out->renderflags |= Q3MTEXTURERENDERFLAGS_NODRAW;
+               if (!strncmp(out->name, "textures/skies/", 15))
+                       out->renderflags |= Q3MTEXTURERENDERFLAGS_SKY;
+
+               out->number = i;
+               Mod_LoadSkinFrame(&out->skin, out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, false, true, true);
+       }
 }
 
-static void FreeWinding (winding_t *w)
+static void Mod_Q3BSP_LoadPlanes(lump_t *l)
 {
-       Mem_Free(w);
+       q3dplane_t *in;
+       mplane_t *out;
+       int i, count;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+
+       loadmodel->brushq3.data_planes = out;
+       loadmodel->brushq3.num_planes = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               out->normal[0] = LittleLong(in->normal[0]);
+               out->normal[1] = LittleLong(in->normal[1]);
+               out->normal[2] = LittleLong(in->normal[2]);
+               out->dist = LittleLong(in->dist);
+               PlaneClassify(out);
+       }
 }
 
-/*
-=================
-BaseWindingForPlane
-=================
-*/
-static winding_t *BaseWindingForPlane (mplane_t *p)
+static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
 {
-       double org[3], vright[3], vup[3], normal[3];
-       winding_t *w;
+       q3dbrushside_t *in;
+       q3mbrushside_t *out;
+       int i, n, count;
 
-       VectorCopy(p->normal, normal);
-       VectorVectorsDouble(normal, vright, vup);
-
-       VectorScale (vup, 1024.0*1024.0*1024.0, vup);
-       VectorScale (vright, 1024.0*1024.0*1024.0, vright);
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       // project a really big axis aligned box onto the plane
-       w = NewWinding (4);
+       loadmodel->brushq3.data_brushsides = out;
+       loadmodel->brushq3.num_brushsides = count;
 
-       VectorScale (p->normal, p->dist, org);
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               n = LittleLong(in->planeindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_planes)
+                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)\n", n, loadmodel->brushq3.num_planes);
+               out->plane = loadmodel->brushq3.data_planes + n;
+               n = LittleLong(in->textureindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
+               out->texture = loadmodel->brushq3.data_textures + n;
+       }
+}
 
-       VectorSubtract (org, vright, w->points[0]);
-       VectorAdd (w->points[0], vup, w->points[0]);
+static void Mod_Q3BSP_LoadBrushes(lump_t *l)
+{
+       q3dbrush_t *in;
+       q3mbrush_t *out;
+       int i, j, n, c, count, maxplanes;
+       mplane_t *planes;
+       winding_t *temp1, *temp2;
 
-       VectorAdd (org, vright, w->points[1]);
-       VectorAdd (w->points[1], vup, w->points[1]);
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       VectorAdd (org, vright, w->points[2]);
-       VectorSubtract (w->points[2], vup, w->points[2]);
+       loadmodel->brushq3.data_brushes = out;
+       loadmodel->brushq3.num_brushes = count;
 
-       VectorSubtract (org, vright, w->points[3]);
-       VectorSubtract (w->points[3], vup, w->points[3]);
+       temp1 = Winding_New(64);
+       temp2 = Winding_New(64);
 
-       w->numpoints = 4;
+       maxplanes = 0;
+       planes = NULL;
 
-       return w;
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               n = LittleLong(in->firstbrushside);
+               c = LittleLong(in->numbrushsides);
+               if (n < 0 || n + c > loadmodel->brushq3.num_brushsides)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)\n", n, n + c, loadmodel->brushq3.num_brushsides);
+               out->firstbrushside = loadmodel->brushq3.data_brushsides + n;
+               out->numbrushsides = c;
+               n = LittleLong(in->textureindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
+               out->texture = loadmodel->brushq3.data_textures + n;
+
+               // make a list of mplane_t structs to construct a colbrush from
+               if (maxplanes < out->numbrushsides)
+               {
+                       maxplanes = out->numbrushsides;
+                       if (planes)
+                               Mem_Free(planes);
+                       planes = Mem_Alloc(tempmempool, sizeof(mplane_t) * maxplanes);
+               }
+               for (j = 0;j < out->numbrushsides;j++)
+               {
+                       VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
+                       planes[j].dist = out->firstbrushside[j].plane->dist;
+               }
+               // make the colbrush from the planes
+               out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, temp1, temp2);
+       }
+       if (planes)
+               Mem_Free(planes);
+       Winding_Free(temp1);
+       Winding_Free(temp2);
 }
 
-/*
-==================
-ClipWinding
-
-Clips the winding to the plane, returning the new winding on the positive side
-Frees the input winding.
-If keepon is true, an exactly on-plane winding will be saved, otherwise
-it will be clipped away.
-==================
-*/
-static winding_t *ClipWinding (winding_t *in, mplane_t *split, int keepon)
+static void Mod_Q3BSP_LoadEffects(lump_t *l)
 {
-       double  dists[MAX_POINTS_ON_WINDING + 1];
-       int             sides[MAX_POINTS_ON_WINDING + 1];
-       int             counts[3];
-       double  dot;
-       int             i, j;
-       double  *p1, *p2;
-       double  mid[3];
-       winding_t       *neww;
-       int             maxpts;
+       q3deffect_t *in;
+       q3meffect_t *out;
+       int i, n, count;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       counts[SIDE_FRONT] = counts[SIDE_BACK] = counts[SIDE_ON] = 0;
+       loadmodel->brushq3.data_effects = out;
+       loadmodel->brushq3.num_effects = count;
 
-       // determine sides for each point
-       for (i = 0;i < in->numpoints;i++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               dists[i] = dot = DotProduct (in->points[i], split->normal) - split->dist;
-               if (dot > ON_EPSILON)
-                       sides[i] = SIDE_FRONT;
-               else if (dot < -ON_EPSILON)
-                       sides[i] = SIDE_BACK;
-               else
-                       sides[i] = SIDE_ON;
-               counts[sides[i]]++;
+               strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
+               n = LittleLong(in->brushindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
+               out->brush = loadmodel->brushq3.data_brushes + n;
+               out->unknown = LittleLong(in->unknown);
        }
-       sides[i] = sides[0];
-       dists[i] = dists[0];
+}
 
-       if (keepon && !counts[0] && !counts[1])
-               return in;
+static void Mod_Q3BSP_LoadVertices(lump_t *l)
+{
+       q3dvertex_t *in;
+       int i, count;
 
-       if (!counts[0])
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
+       loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
+       loadmodel->brushq3.data_vertex3f = Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 2 + 2 + 3 + 3 + 3 + 4)));
+       loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_vertex3f + count * 3;
+       loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
+       loadmodel->brushq3.data_svector3f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
+       loadmodel->brushq3.data_tvector3f = loadmodel->brushq3.data_svector3f + count * 3;
+       loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_tvector3f + count * 3;
+       loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_normal3f + count * 3;
+
+       for (i = 0;i < count;i++, in++)
        {
-               FreeWinding (in);
-               return NULL;
+               loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
+               loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
+               loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
+               loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
+               loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
+               loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
+               loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
+               // svector/tvector are calculated later in face loading
+               loadmodel->brushq3.data_svector3f[i * 3 + 0] = 0;
+               loadmodel->brushq3.data_svector3f[i * 3 + 1] = 0;
+               loadmodel->brushq3.data_svector3f[i * 3 + 2] = 0;
+               loadmodel->brushq3.data_tvector3f[i * 3 + 0] = 0;
+               loadmodel->brushq3.data_tvector3f[i * 3 + 1] = 0;
+               loadmodel->brushq3.data_tvector3f[i * 3 + 2] = 0;
+               loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
+               loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
+               loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
+               loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
+               loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
+               loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
+               loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
        }
-       if (!counts[1])
-               return in;
+}
+
+static void Mod_Q3BSP_LoadTriangles(lump_t *l)
+{
+       int *in;
+       int *out;
+       int i, count;
 
-       maxpts = in->numpoints+4;       // can't use counts[0]+2 because of fp grouping errors
-       if (maxpts > MAX_POINTS_ON_WINDING)
-               Sys_Error ("ClipWinding: maxpts > MAX_POINTS_ON_WINDING");
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(int[3]))
+               Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out) * 2);
 
-       neww = NewWinding (maxpts);
+       loadmodel->brushq3.num_triangles = count / 3;
+       loadmodel->brushq3.data_element3i = out;
+       loadmodel->brushq3.data_neighbor3i = out + count;
 
-       for (i = 0;i < in->numpoints;i++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               if (neww->numpoints >= maxpts)
-                       Sys_Error ("ClipWinding: points exceeded estimate");
+               *out = LittleLong(*in);
+               if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
+                       *out = 0;
+               }
+       }
+}
+
+static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
+{
+       q3dlightmap_t *in;
+       rtexture_t **out;
+       int i, count;
+
+       if (!l->filelen)
+               return;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+
+       loadmodel->brushq3.data_lightmaps = out;
+       loadmodel->brushq3.num_lightmaps = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+               *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+}
+
+static void Mod_Q3BSP_LoadFaces(lump_t *l)
+{
+       q3dface_t *in;
+       q3mface_t *out;
+       int i, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xlevel, ylevel, row0, row1, x, y, *e, finalvertices, finaltriangles;
+       //int *originalelement3i;
+       //int *originalneighbor3i;
+       float *originalvertex3f;
+       //float *originalsvector3f;
+       //float *originaltvector3f;
+       //float *originalnormal3f;
+       float *originalcolor4f;
+       float *originaltexcoordtexture2f;
+       float *originaltexcoordlightmap2f;
+       float *v;
+
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               p1 = in->points[i];
+       loadmodel->brushq3.data_faces = out;
+       loadmodel->brushq3.num_faces = count;
 
-               if (sides[i] == SIDE_ON)
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               // check face type first
+               out->type = LittleLong(in->type);
+               if (out->type != Q3FACETYPE_POLYGON
+                && out->type != Q3FACETYPE_PATCH
+                && out->type != Q3FACETYPE_MESH
+                && out->type != Q3FACETYPE_FLARE)
                {
-                       VectorCopy (p1, neww->points[neww->numpoints]);
-                       neww->numpoints++;
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, out->type);
+                       out->type = 0; // error
                        continue;
                }
 
-               if (sides[i] == SIDE_FRONT)
+               n = LittleLong(in->textureindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_textures)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->brushq3.num_textures);
+                       out->type = 0; // error
+                       continue;
+                       n = 0;
+               }
+               out->texture = loadmodel->brushq3.data_textures + n;
+               n = LittleLong(in->effectindex);
+               if (n < -1 || n >= loadmodel->brushq3.num_effects)
                {
-                       VectorCopy (p1, neww->points[neww->numpoints]);
-                       neww->numpoints++;
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
+                       n = -1;
                }
+               if (n == -1)
+                       out->effect = NULL;
+               else
+                       out->effect = loadmodel->brushq3.data_effects + n;
+               n = LittleLong(in->lightmapindex);
+               if (n < -1 || n >= loadmodel->brushq3.num_lightmaps)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
+                       n = -1;
+               }
+               if (n == -1)
+                       out->lightmaptexture = NULL;
+               else
+                       out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
 
-               if (sides[i+1] == SIDE_ON || sides[i+1] == sides[i])
+               out->firstvertex = LittleLong(in->firstvertex);
+               out->num_vertices = LittleLong(in->numvertices);
+               out->firstelement = LittleLong(in->firstelement);
+               out->num_triangles = LittleLong(in->numelements) / 3;
+               if (out->num_triangles * 3 != LittleLong(in->numelements))
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
+                       out->type = 0; // error
                        continue;
-
-               // generate a split point
-               p2 = in->points[(i+1)%in->numpoints];
-
-               dot = dists[i] / (dists[i]-dists[i+1]);
-               for (j = 0;j < 3;j++)
-               {       // avoid round off error when possible
-                       if (split->normal[j] == 1)
-                               mid[j] = split->dist;
-                       else if (split->normal[j] == -1)
-                               mid[j] = -split->dist;
-                       else
-                               mid[j] = p1[j] + dot*(p2[j]-p1[j]);
                }
-
-               VectorCopy (mid, neww->points[neww->numpoints]);
-               neww->numpoints++;
+               if (out->firstvertex < 0 || out->firstvertex + out->num_vertices > loadmodel->brushq3.num_vertices)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, out->firstvertex, out->firstvertex + out->num_vertices, loadmodel->brushq3.num_vertices);
+                       out->type = 0; // error
+                       continue;
+               }
+               if (out->firstelement < 0 || out->firstelement + out->num_triangles * 3 > loadmodel->brushq3.num_triangles * 3)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, out->firstelement, out->firstelement + out->num_triangles * 3, loadmodel->brushq3.num_triangles * 3);
+                       out->type = 0; // error
+                       continue;
+               }
+               out->data_vertex3f = loadmodel->brushq3.data_vertex3f + out->firstvertex * 3;
+               out->data_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + out->firstvertex * 2;
+               out->data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + out->firstvertex * 2;
+               out->data_svector3f = loadmodel->brushq3.data_svector3f + out->firstvertex * 3;
+               out->data_tvector3f = loadmodel->brushq3.data_tvector3f + out->firstvertex * 3;
+               out->data_normal3f = loadmodel->brushq3.data_normal3f + out->firstvertex * 3;
+               out->data_color4f = loadmodel->brushq3.data_color4f + out->firstvertex * 4;
+               out->data_element3i = loadmodel->brushq3.data_element3i + out->firstelement;
+               out->data_neighbor3i = loadmodel->brushq3.data_neighbor3i + out->firstelement;
+               switch(out->type)
+               {
+               case Q3FACETYPE_POLYGON:
+               case Q3FACETYPE_MESH:
+                       // no processing necessary
+                       break;
+               case Q3FACETYPE_PATCH:
+                       patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
+                       patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
+                       if (patchsize[0] < 1 || patchsize[1] < 1)
+                       {
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
+                               out->type = 0; // error
+                               continue;
+                       }
+                       // convert patch to Q3FACETYPE_MESH
+                       xlevel = mod_q3bsp_curves_subdivide_level.integer;
+                       ylevel = mod_q3bsp_curves_subdivide_level.integer;
+                       finalwidth = ((patchsize[0] - 1) << xlevel) + 1;
+                       finalheight = ((patchsize[1] - 1) << ylevel) + 1;
+                       finalvertices = finalwidth * finalheight;
+                       finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+                       originalvertex3f = out->data_vertex3f;
+                       //originalsvector3f = out->data_svector3f;
+                       //originaltvector3f = out->data_tvector3f;
+                       //originalnormal3f = out->data_normal3f;
+                       originalcolor4f = out->data_color4f;
+                       originaltexcoordtexture2f = out->data_texcoordtexture2f;
+                       originaltexcoordlightmap2f = out->data_texcoordlightmap2f;
+                       //originalelement3i = out->data_element3i;
+                       //originalneighbor3i = out->data_neighbor3i;
+                       out->data_vertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[20]) * finalvertices + sizeof(int[6]) * finaltriangles);
+                       out->data_svector3f = out->data_vertex3f + finalvertices * 3;
+                       out->data_tvector3f = out->data_svector3f + finalvertices * 3;
+                       out->data_normal3f = out->data_tvector3f + finalvertices * 3;
+                       out->data_color4f = out->data_normal3f + finalvertices * 3;
+                       out->data_texcoordtexture2f = out->data_color4f + finalvertices * 4;
+                       out->data_texcoordlightmap2f = out->data_texcoordtexture2f + finalvertices * 2;
+                       out->data_element3i = (int *)(out->data_texcoordlightmap2f + finalvertices * 2);
+                       out->data_neighbor3i = out->data_element3i + finaltriangles * 3;
+                       out->type = Q3FACETYPE_MESH;
+                       out->firstvertex = -1;
+                       out->num_vertices = finalvertices;
+                       out->firstelement = -1;
+                       out->num_triangles = finaltriangles;
+                       // generate geometry
+                       // (note: normals are skipped because they get recalculated)
+                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 3, originalvertex3f, out->data_vertex3f);
+                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 2, originaltexcoordtexture2f, out->data_texcoordtexture2f);
+                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 2, originaltexcoordlightmap2f, out->data_texcoordlightmap2f);
+                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 4, originalcolor4f, out->data_color4f);
+                       // generate elements
+                       e = out->data_element3i;
+                       for (y = 0;y < finalheight - 1;y++)
+                       {
+                               row0 = (y + 0) * finalwidth;
+                               row1 = (y + 1) * finalwidth;
+                               for (x = 0;x < finalwidth - 1;x++)
+                               {
+                                       *e++ = row0;
+                                       *e++ = row1;
+                                       *e++ = row0 + 1;
+                                       *e++ = row1;
+                                       *e++ = row1 + 1;
+                                       *e++ = row0 + 1;
+                                       row0++;
+                                       row1++;
+                               }
+                       }
+                       out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, out->data_element3i, out->data_element3i, out->data_vertex3f);
+                       if (developer.integer)
+                       {
+                               if (out->num_triangles < finaltriangles)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
+                               else
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
+                       }
+                       // q3map does not put in collision brushes for curves... ugh
+                       out->collisions = true;
+                       break;
+               case Q3FACETYPE_FLARE:
+                       Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
+                       // don't render it
+                       out->num_triangles = 0;
+                       break;
+               }
+               for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
+                       if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
+                               invalidelements++;
+               if (invalidelements)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, texture->nativecontents = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, out->type, out->texture->name, out->texture->surfaceflags, out->texture->nativecontents, out->firstvertex, out->num_vertices, out->firstelement, out->num_triangles * 3);
+                       for (j = 0;j < out->num_triangles * 3;j++)
+                       {
+                               Con_Printf(" %i", out->data_element3i[j]);
+                               if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
+                                       out->data_element3i[j] = 0;
+                       }
+                       Con_Printf("\n");
+               }
+               // for shadow volumes
+               Mod_BuildTriangleNeighbors(out->data_neighbor3i, out->data_element3i, out->num_triangles);
+               // for per pixel lighting
+               Mod_BuildTextureVectorsAndNormals(out->num_vertices, out->num_triangles, out->data_vertex3f, out->data_texcoordtexture2f, out->data_element3i, out->data_svector3f, out->data_tvector3f, out->data_normal3f);
+               // calculate a bounding box
+               VectorClear(out->mins);
+               VectorClear(out->maxs);
+               if (out->num_vertices)
+               {
+                       VectorCopy(out->data_vertex3f, out->mins);
+                       VectorCopy(out->data_vertex3f, out->maxs);
+                       for (j = 1, v = out->data_vertex3f + 3;j < out->num_vertices;j++, v += 3)
+                       {
+                               out->mins[0] = min(out->mins[0], v[0]);
+                               out->maxs[0] = max(out->maxs[0], v[0]);
+                               out->mins[1] = min(out->mins[1], v[1]);
+                               out->maxs[1] = max(out->maxs[1], v[1]);
+                               out->mins[2] = min(out->mins[2], v[2]);
+                               out->maxs[2] = max(out->maxs[2], v[2]);
+                       }
+                       out->mins[0] -= 1.0f;
+                       out->mins[1] -= 1.0f;
+                       out->mins[2] -= 1.0f;
+                       out->maxs[0] += 1.0f;
+                       out->maxs[1] += 1.0f;
+                       out->maxs[2] += 1.0f;
+               }
        }
-
-       // free the original winding
-       FreeWinding (in);
-
-       return neww;
 }
 
-
-/*
-==================
-DivideWinding
-
-Divides a winding by a plane, producing one or two windings.  The
-original winding is not damaged or freed.  If only on one side, the
-returned winding will be the input winding.  If on both sides, two
-new windings will be created.
-==================
-*/
-static void DivideWinding (winding_t *in, mplane_t *split, winding_t **front, winding_t **back)
+static void Mod_Q3BSP_LoadModels(lump_t *l)
 {
-       double  dists[MAX_POINTS_ON_WINDING + 1];
-       int             sides[MAX_POINTS_ON_WINDING + 1];
-       int             counts[3];
-       double  dot;
-       int             i, j;
-       double  *p1, *p2;
-       double  mid[3];
-       winding_t       *f, *b;
-       int             maxpts;
-
-       counts[SIDE_FRONT] = counts[SIDE_BACK] = counts[SIDE_ON] = 0;
+       q3dmodel_t *in;
+       q3mmodel_t *out;
+       int i, j, n, c, count;
 
-       // determine sides for each point
-       for (i = 0;i < in->numpoints;i++)
-       {
-               dot = DotProduct (in->points[i], split->normal);
-               dot -= split->dist;
-               dists[i] = dot;
-               if (dot > ON_EPSILON) sides[i] = SIDE_FRONT;
-               else if (dot < -ON_EPSILON) sides[i] = SIDE_BACK;
-               else sides[i] = SIDE_ON;
-               counts[sides[i]]++;
-       }
-       sides[i] = sides[0];
-       dists[i] = dists[0];
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       *front = *back = NULL;
+       loadmodel->brushq3.data_models = out;
+       loadmodel->brushq3.num_models = count;
 
-       if (!counts[0])
-       {
-               *back = in;
-               return;
-       }
-       if (!counts[1])
+       for (i = 0;i < count;i++, in++, out++)
        {
-               *front = in;
-               return;
+               for (j = 0;j < 3;j++)
+               {
+                       out->mins[j] = LittleFloat(in->mins[j]);
+                       out->maxs[j] = LittleFloat(in->maxs[j]);
+               }
+               n = LittleLong(in->firstface);
+               c = LittleLong(in->numfaces);
+               if (n < 0 || n + c > loadmodel->brushq3.num_faces)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)\n", n, n + c, loadmodel->brushq3.num_faces);
+               out->firstface = loadmodel->brushq3.data_faces + n;
+               out->numfaces = c;
+               n = LittleLong(in->firstbrush);
+               c = LittleLong(in->numbrushes);
+               if (n < 0 || n + c > loadmodel->brushq3.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)\n", n, n + c, loadmodel->brushq3.num_brushes);
+               out->firstbrush = loadmodel->brushq3.data_brushes + n;
+               out->numbrushes = c;
        }
+}
 
-       maxpts = in->numpoints+4;       // can't use counts[0]+2 because of fp grouping errors
+static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
+{
+       int *in;
+       q3mbrush_t **out;
+       int i, n, count;
 
-       if (maxpts > MAX_POINTS_ON_WINDING)
-               Sys_Error ("ClipWinding: maxpts > MAX_POINTS_ON_WINDING");
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       *front = f = NewWinding (maxpts);
-       *back = b = NewWinding (maxpts);
+       loadmodel->brushq3.data_leafbrushes = out;
+       loadmodel->brushq3.num_leafbrushes = count;
 
-       for (i = 0;i < in->numpoints;i++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               if (f->numpoints >= maxpts || b->numpoints >= maxpts)
-                       Sys_Error ("DivideWinding: points exceeded estimate");
-
-               p1 = in->points[i];
-
-               if (sides[i] == SIDE_ON)
-               {
-                       VectorCopy (p1, f->points[f->numpoints]);
-                       f->numpoints++;
-                       VectorCopy (p1, b->points[b->numpoints]);
-                       b->numpoints++;
-                       continue;
-               }
-
-               if (sides[i] == SIDE_FRONT)
-               {
-                       VectorCopy (p1, f->points[f->numpoints]);
-                       f->numpoints++;
-               }
-               else if (sides[i] == SIDE_BACK)
-               {
-                       VectorCopy (p1, b->points[b->numpoints]);
-                       b->numpoints++;
-               }
+               n = LittleLong(*in);
+               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
+               *out = loadmodel->brushq3.data_brushes + n;
+       }
+}
 
-               if (sides[i+1] == SIDE_ON || sides[i+1] == sides[i])
-                       continue;
+static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
+{
+       int *in;
+       q3mface_t **out;
+       int i, n, count;
 
-               // generate a split point
-               p2 = in->points[(i+1)%in->numpoints];
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-               dot = dists[i] / (dists[i]-dists[i+1]);
-               for (j = 0;j < 3;j++)
-               {       // avoid round off error when possible
-                       if (split->normal[j] == 1)
-                               mid[j] = split->dist;
-                       else if (split->normal[j] == -1)
-                               mid[j] = -split->dist;
-                       else
-                               mid[j] = p1[j] + dot*(p2[j]-p1[j]);
-               }
+       loadmodel->brushq3.data_leaffaces = out;
+       loadmodel->brushq3.num_leaffaces = count;
 
-               VectorCopy (mid, f->points[f->numpoints]);
-               f->numpoints++;
-               VectorCopy (mid, b->points[b->numpoints]);
-               b->numpoints++;
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               n = LittleLong(*in);
+               if (n < 0 || n >= loadmodel->brushq3.num_faces)
+                       Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->brushq3.num_faces);
+               *out = loadmodel->brushq3.data_faces + n;
        }
 }
 
-typedef struct portal_s
+static void Mod_Q3BSP_LoadLeafs(lump_t *l)
 {
-       mplane_t plane;
-       mnode_t *nodes[2];              // [0] = front side of plane
-       struct portal_s *next[2];
-       winding_t *winding;
-       struct portal_s *chain; // all portals are linked into a list
-}
-portal_t;
+       q3dleaf_t *in;
+       q3mleaf_t *out;
+       int i, j, n, c, count;
 
-static portal_t *portalchain;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-/*
-===========
-AllocPortal
-===========
-*/
-static portal_t *AllocPortal (void)
-{
-       portal_t *p;
-       p = Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
-       p->chain = portalchain;
-       portalchain = p;
-       return p;
+       loadmodel->brushq3.data_leafs = out;
+       loadmodel->brushq3.num_leafs = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+       {
+               out->isnode = false;
+               out->parent = NULL;
+               out->clusterindex = LittleLong(in->clusterindex);
+               out->areaindex = LittleLong(in->areaindex);
+               for (j = 0;j < 3;j++)
+               {
+                       // yes the mins/maxs are ints
+                       out->mins[j] = LittleLong(in->mins[j]);
+                       out->maxs[j] = LittleLong(in->maxs[j]);
+               }
+               n = LittleLong(in->firstleafface);
+               c = LittleLong(in->numleaffaces);
+               if (n < 0 || n + c > loadmodel->brushq3.num_leaffaces)
+                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafface range %i : %i (%i leaffaces)\n", n, n + c, loadmodel->brushq3.num_leaffaces);
+               out->firstleafface = loadmodel->brushq3.data_leaffaces + n;
+               out->numleaffaces = c;
+               n = LittleLong(in->firstleafbrush);
+               c = LittleLong(in->numleafbrushes);
+               if (n < 0 || n + c > loadmodel->brushq3.num_leafbrushes)
+                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)\n", n, n + c, loadmodel->brushq3.num_leafbrushes);
+               out->firstleafbrush = loadmodel->brushq3.data_leafbrushes + n;
+               out->numleafbrushes = c;
+       }
 }
 
-static void FreePortal(portal_t *p)
+static void Mod_Q3BSP_LoadNodes_RecursiveSetParent(q3mnode_t *node, q3mnode_t *parent)
 {
-       Mem_Free(p);
+       if (node->parent)
+               Host_Error("Mod_Q3BSP_LoadNodes_RecursiveSetParent: runaway recursion\n");
+       node->parent = parent;
+       if (node->isnode)
+       {
+               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
+               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
+       }
 }
 
-static void Mod_RecursiveRecalcNodeBBox(mnode_t *node)
+static void Mod_Q3BSP_LoadNodes(lump_t *l)
 {
-       // calculate children first
-       if (node->children[0]->contents >= 0)
-               Mod_RecursiveRecalcNodeBBox(node->children[0]);
-       if (node->children[1]->contents >= 0)
-               Mod_RecursiveRecalcNodeBBox(node->children[1]);
+       q3dnode_t *in;
+       q3mnode_t *out;
+       int i, j, n, count;
 
-       // make combined bounding box from children
-       node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
-       node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
-       node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
-       node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
-       node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
-       node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
-}
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
+       count = l->filelen / sizeof(*in);
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-static void Mod_FinalizePortals(void)
-{
-       int i, j, numportals, numpoints;
-       portal_t *p, *pnext;
-       mportal_t *portal;
-       mvertex_t *point;
-       mleaf_t *leaf, *endleaf;
-       winding_t *w;
+       loadmodel->brushq3.data_nodes = out;
+       loadmodel->brushq3.num_nodes = count;
 
-       // recalculate bounding boxes for all leafs (because qbsp is very sloppy)
-       leaf = loadmodel->leafs;
-       endleaf = leaf + loadmodel->numleafs;
-       for (;leaf < endleaf;leaf++)
-       {
-               VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
-               VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
-       }
-       p = portalchain;
-       while(p)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               if (p->winding)
+               out->isnode = true;
+               out->parent = NULL;
+               n = LittleLong(in->planeindex);
+               if (n < 0 || n >= loadmodel->brushq3.num_planes)
+                       Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)\n", n, loadmodel->brushq3.num_planes);
+               out->plane = loadmodel->brushq3.data_planes + n;
+               for (j = 0;j < 2;j++)
                {
-                       for (i = 0;i < 2;i++)
+                       n = LittleLong(in->childrenindex[j]);
+                       if (n >= 0)
                        {
-                               leaf = (mleaf_t *)p->nodes[i];
-                               w = p->winding;
-                               for (j = 0;j < w->numpoints;j++)
-                               {
-                                       if (leaf->mins[0] > w->points[j][0]) leaf->mins[0] = w->points[j][0];
-                                       if (leaf->mins[1] > w->points[j][1]) leaf->mins[1] = w->points[j][1];
-                                       if (leaf->mins[2] > w->points[j][2]) leaf->mins[2] = w->points[j][2];
-                                       if (leaf->maxs[0] < w->points[j][0]) leaf->maxs[0] = w->points[j][0];
-                                       if (leaf->maxs[1] < w->points[j][1]) leaf->maxs[1] = w->points[j][1];
-                                       if (leaf->maxs[2] < w->points[j][2]) leaf->maxs[2] = w->points[j][2];
-                               }
+                               if (n >= loadmodel->brushq3.num_nodes)
+                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)\n", n, loadmodel->brushq3.num_nodes);
+                               out->children[j] = loadmodel->brushq3.data_nodes + n;
+                       }
+                       else
+                       {
+                               n = -1 - n;
+                               if (n >= loadmodel->brushq3.num_leafs)
+                                       Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)\n", n, loadmodel->brushq3.num_leafs);
+                               out->children[j] = (q3mnode_t *)(loadmodel->brushq3.data_leafs + n);
                        }
                }
-               p = p->chain;
-       }
-
-       Mod_RecursiveRecalcNodeBBox(loadmodel->nodes);
-
-       // tally up portal and point counts
-       p = portalchain;
-       numportals = 0;
-       numpoints = 0;
-       while(p)
-       {
-               // note: this check must match the one below or it will usually corrupt memory
-               // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-               if (p->winding && p->nodes[0] != p->nodes[1]
-                && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+               for (j = 0;j < 3;j++)
                {
-                       numportals += 2;
-                       numpoints += p->winding->numpoints * 2;
+                       // yes the mins/maxs are ints
+                       out->mins[j] = LittleLong(in->mins[j]);
+                       out->maxs[j] = LittleLong(in->maxs[j]);
                }
-               p = p->chain;
        }
-       loadmodel->portals = Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
-       loadmodel->numportals = numportals;
-       loadmodel->portalpoints = (void *) ((qbyte *) loadmodel->portals + numportals * sizeof(mportal_t));
-       loadmodel->numportalpoints = numpoints;
-       // clear all leaf portal chains
-       for (i = 0;i < loadmodel->numleafs;i++)
-               loadmodel->leafs[i].portals = NULL;
-       // process all portals in the global portal chain, while freeing them
-       portal = loadmodel->portals;
-       point = loadmodel->portalpoints;
-       p = portalchain;
-       portalchain = NULL;
-       while (p)
-       {
-               pnext = p->chain;
 
-               if (p->winding)
-               {
-                       // note: this check must match the one above or it will usually corrupt memory
-                       // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-                       if (p->nodes[0] != p->nodes[1]
-                        && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                        && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
-                       {
-                               // first make the back to front portal (forward portal)
-                               portal->points = point;
-                               portal->numpoints = p->winding->numpoints;
-                               portal->plane.dist = p->plane.dist;
-                               VectorCopy(p->plane.normal, portal->plane.normal);
-                               portal->here = (mleaf_t *)p->nodes[1];
-                               portal->past = (mleaf_t *)p->nodes[0];
-                               // copy points
-                               for (j = 0;j < portal->numpoints;j++)
-                               {
-                                       VectorCopy(p->winding->points[j], point->position);
-                                       point++;
-                               }
-                               PlaneClassify(&portal->plane);
+       // set the parent pointers
+       Mod_Q3BSP_LoadNodes_RecursiveSetParent(loadmodel->brushq3.data_nodes, NULL);
+}
 
-                               // link into leaf's portal chain
-                               portal->next = portal->here->portals;
-                               portal->here->portals = portal;
+static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
+{
+       q3dlightgrid_t *in;
+       q3dlightgrid_t *out;
+       int count;
 
-                               // advance to next portal
-                               portal++;
+       if (l->filelen == 0)
+               return;
 
-                               // then make the front to back portal (backward portal)
-                               portal->points = point;
-                               portal->numpoints = p->winding->numpoints;
-                               portal->plane.dist = -p->plane.dist;
-                               VectorNegate(p->plane.normal, portal->plane.normal);
-                               portal->here = (mleaf_t *)p->nodes[0];
-                               portal->past = (mleaf_t *)p->nodes[1];
-                               // copy points
-                               for (j = portal->numpoints - 1;j >= 0;j--)
-                               {
-                                       VectorCopy(p->winding->points[j], point->position);
-                                       point++;
-                               }
-                               PlaneClassify(&portal->plane);
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen % sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
+       loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
+       loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
+       loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
+       loadmodel->brushq3.num_lightgrid_imins[0] = ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
+       loadmodel->brushq3.num_lightgrid_imins[1] = ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
+       loadmodel->brushq3.num_lightgrid_imins[2] = ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
+       loadmodel->brushq3.num_lightgrid_imaxs[0] = floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
+       loadmodel->brushq3.num_lightgrid_imaxs[1] = floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
+       loadmodel->brushq3.num_lightgrid_imaxs[2] = floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
+       loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
+       loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
+       loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
+       count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
+       if (l->filelen < count * (int)sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)\n", l->filelen, count * sizeof(*in), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
+       if (l->filelen != count * (int)sizeof(*in))
+               Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", count * sizeof(*in), l->filelen);
 
-                               // link into leaf's portal chain
-                               portal->next = portal->here->portals;
-                               portal->here->portals = portal;
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+       loadmodel->brushq3.data_lightgrid = out;
+       loadmodel->brushq3.num_lightgrid = count;
 
-                               // advance to next portal
-                               portal++;
-                       }
-                       FreeWinding(p->winding);
-               }
-               FreePortal(p);
-               p = pnext;
-       }
+       // no swapping or validation necessary
+       memcpy(out, in, count * (int)sizeof(*out));
+
+       Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
+       Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
 }
 
-/*
-=============
-AddPortalToNodes
-=============
-*/
-static void AddPortalToNodes (portal_t *p, mnode_t *front, mnode_t *back)
+static void Mod_Q3BSP_LoadPVS(lump_t *l)
 {
-       if (!front)
-               Host_Error ("AddPortalToNodes: NULL front node");
-       if (!back)
-               Host_Error ("AddPortalToNodes: NULL back node");
-       if (p->nodes[0] || p->nodes[1])
-               Host_Error ("AddPortalToNodes: already included");
-       // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
+       q3dpvs_t *in;
+       int totalchains;
 
-       p->nodes[0] = front;
-       p->next[0] = (portal_t *)front->portals;
-       front->portals = (mportal_t *)p;
+       if (l->filelen == 0)
+               return;
 
-       p->nodes[1] = back;
-       p->next[1] = (portal_t *)back->portals;
-       back->portals = (mportal_t *)p;
+       in = (void *)(mod_base + l->fileofs);
+       if (l->filelen < 9)
+               Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
+
+       loadmodel->brushq3.num_pvsclusters = LittleLong(in->numclusters);
+       loadmodel->brushq3.num_pvschainlength = LittleLong(in->chainlength);
+       if (loadmodel->brushq3.num_pvschainlength < ((loadmodel->brushq3.num_pvsclusters + 7) / 8))
+               Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8\n", loadmodel->brushq3.num_pvschainlength, loadmodel->brushq3.num_pvsclusters);
+       totalchains = loadmodel->brushq3.num_pvschainlength * loadmodel->brushq3.num_pvsclusters;
+       if (l->filelen < totalchains + (int)sizeof(*in))
+               Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)\n", loadmodel->brushq3.num_pvsclusters, loadmodel->brushq3.num_pvschainlength, totalchains + sizeof(*in), l->filelen);
+
+       loadmodel->brushq3.data_pvschains = Mem_Alloc(loadmodel->mempool, totalchains);
+       memcpy(loadmodel->brushq3.data_pvschains, (qbyte *)(in + 1), totalchains);
 }
 
-/*
-=============
-RemovePortalFromNode
-=============
-*/
-static void RemovePortalFromNodes(portal_t *portal)
+static void Mod_Q3BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, vec_t radius)
 {
-       int i;
-       mnode_t *node;
-       void **portalpointer;
-       portal_t *t;
-       for (i = 0;i < 2;i++)
-       {
-               node = portal->nodes[i];
-
-               portalpointer = (void **) &node->portals;
-               while (1)
-               {
-                       t = *portalpointer;
-                       if (!t)
-                               Host_Error ("RemovePortalFromNodes: portal not in leaf");
+       // FIXME: finish this code
+       VectorCopy(in, out);
+}
 
-                       if (t == portal)
-                       {
-                               if (portal->nodes[0] == node)
-                               {
-                                       *portalpointer = portal->next[0];
-                                       portal->nodes[0] = NULL;
-                               }
-                               else if (portal->nodes[1] == node)
-                               {
-                                       *portalpointer = portal->next[1];
-                                       portal->nodes[1] = NULL;
-                               }
-                               else
-                                       Host_Error ("RemovePortalFromNodes: portal not bounding leaf");
-                               break;
+static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
+{
+       int i, j, k, index[3];
+       float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
+       q3dlightgrid_t *a, *s;
+       // FIXME: write this
+       if (!model->brushq3.num_lightgrid)
+       {
+               ambientcolor[0] += 128;
+               ambientcolor[1] += 128;
+               ambientcolor[2] += 128;
+               return;
+       }
+       Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
+       //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
+       //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
+       transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
+       transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
+       transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
+       index[0] = (int)floor(transformed[0]);
+       index[1] = (int)floor(transformed[1]);
+       index[2] = (int)floor(transformed[2]);
+       //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
+       // now lerp the values
+       VectorClear(diffusenormal);
+       a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
+       for (k = 0;k < 2;k++)
+       {
+               blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
+               if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
+                       continue;
+               for (j = 0;j < 2;j++)
+               {
+                       blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
+                       if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
+                               continue;
+                       for (i = 0;i < 2;i++)
+                       {
+                               blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0])));
+                               if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
+                                       continue;
+                               s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
+                               VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
+                               VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
+                               pitch = s->diffusepitch * M_PI / 128;
+                               yaw = s->diffuseyaw * M_PI / 128;
+                               sinpitch = sin(pitch);
+                               diffusenormal[0] += blend * (cos(yaw) * sinpitch);
+                               diffusenormal[1] += blend * (sin(yaw) * sinpitch);
+                               diffusenormal[2] += blend * (cos(pitch));
+                               //Con_Printf("blend %f: ambient %i %i %i, diffuse %i %i %i, diffusepitch %i diffuseyaw %i (%f %f, normal %f %f %f)\n", blend, s->ambientrgb[0], s->ambientrgb[1], s->ambientrgb[2], s->diffusergb[0], s->diffusergb[1], s->diffusergb[2], s->diffusepitch, s->diffuseyaw, pitch, yaw, (cos(yaw) * cospitch), (sin(yaw) * cospitch), (-sin(pitch)));
                        }
-
-                       if (t->nodes[0] == node)
-                               portalpointer = (void **) &t->next[0];
-                       else if (t->nodes[1] == node)
-                               portalpointer = (void **) &t->next[1];
-                       else
-                               Host_Error ("RemovePortalFromNodes: portal not bounding leaf");
                }
        }
+       VectorNormalize(diffusenormal);
+       //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
 }
 
-static void Mod_RecursiveNodePortals (mnode_t *node)
+static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe)
 {
-       int side;
-       mnode_t *front, *back, *other_node;
-       mplane_t clipplane, *plane;
-       portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
-       winding_t *nodeportalwinding, *frontwinding, *backwinding;
-
-       // if a leaf, we're done
-       if (node->contents)
+       int i, startside, endside;
+       float dist1, dist2, midfrac, mid[3], segmentmins[3], segmentmaxs[3];
+       q3mleaf_t *leaf;
+       q3mface_t *face;
+       colbrushf_t *brush;
+       if (startfrac >= trace->fraction)
                return;
-
-       plane = node->plane;
-
-       front = node->children[0];
-       back = node->children[1];
-       if (front == back)
-               Host_Error("Mod_RecursiveNodePortals: corrupt node hierarchy");
-
-       // create the new portal by generating a polygon for the node plane,
-       // and clipping it by all of the other portals (which came from nodes above this one)
-       nodeportal = AllocPortal ();
-       nodeportal->plane = *node->plane;
-
-       nodeportalwinding = BaseWindingForPlane (node->plane);
-       side = 0;       // shut up compiler warning
-       for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
+       // note: all line fragments past first impact fraction are ignored
+       while (node->isnode)
        {
-               clipplane = portal->plane;
-               if (portal->nodes[0] == portal->nodes[1])
-                       Host_Error("Mod_RecursiveNodePortals: portal has same node on both sides (1)");
-               if (portal->nodes[0] == node)
-                       side = 0;
-               else if (portal->nodes[1] == node)
+               // recurse down node sides
+               dist1 = PlaneDiff(start, node->plane);
+               dist2 = PlaneDiff(end, node->plane);
+               startside = dist1 < 0;
+               endside = dist2 < 0;
+               if (startside == endside)
                {
-                       clipplane.dist = -clipplane.dist;
-                       VectorNegate (clipplane.normal, clipplane.normal);
-                       side = 1;
+                       // most of the time the line fragment is on one side of the plane
+                       node = node->children[startside];
                }
                else
-                       Host_Error ("Mod_RecursiveNodePortals: mislinked portal");
-
-               nodeportalwinding = ClipWinding (nodeportalwinding, &clipplane, true);
-               if (!nodeportalwinding)
                {
-                       printf ("Mod_RecursiveNodePortals: WARNING: new portal was clipped away\n");
-                       break;
+                       // line crosses node plane, split the line
+                       midfrac = dist1 / (dist1 - dist2);
+                       VectorLerp(linestart, midfrac, lineend, mid);
+                       // take the near side first
+                       Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe);
+                       if (midfrac < trace->fraction)
+                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe);
+                       return;
                }
        }
-
-       if (nodeportalwinding)
+       // hit a leaf
+       segmentmins[0] = min(start[0], end[0]);
+       segmentmins[1] = min(start[1], end[1]);
+       segmentmins[2] = min(start[2], end[2]);
+       segmentmaxs[0] = max(start[0], end[0]);
+       segmentmaxs[1] = max(start[1], end[1]);
+       segmentmaxs[2] = max(start[2], end[2]);
+       leaf = (q3mleaf_t *)node;
+       for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               // if the plane was not clipped on all sides, there was an error
-               nodeportal->winding = nodeportalwinding;
-               AddPortalToNodes (nodeportal, front, back);
+               if (startfrac >= trace->fraction)
+                       return;
+               brush = leaf->firstleafbrush[i]->colbrushf;
+               if (brush && brush->markframe != markframe)
+               {
+                       brush->markframe = markframe;
+                       if (BoxesOverlap(segmentmins, segmentmaxs, brush->mins, brush->maxs))
+                               Collision_TraceLineBrushFloat(trace, linestart, lineend, leaf->firstleafbrush[i]->colbrushf, leaf->firstleafbrush[i]->colbrushf);
+               }
        }
-
-       // split the portals of this node along this node's plane and assign them to the children of this node
-       // (migrating the portals downward through the tree)
-       for (portal = (portal_t *)node->portals;portal;portal = nextportal)
+       if (mod_q3bsp_curves_collisions.integer)
        {
-               if (portal->nodes[0] == portal->nodes[1])
-                       Host_Error("Mod_RecursiveNodePortals: portal has same node on both sides (2)");
-               if (portal->nodes[0] == node)
-                       side = 0;
-               else if (portal->nodes[1] == node)
-                       side = 1;
-               else
-                       Host_Error ("Mod_RecursiveNodePortals: mislinked portal");
-               nextportal = portal->next[side];
-
-               other_node = portal->nodes[!side];
-               RemovePortalFromNodes (portal);
-
-               // cut the portal into two portals, one on each side of the node plane
-               DivideWinding (portal->winding, plane, &frontwinding, &backwinding);
+               for (i = 0;i < leaf->numleaffaces;i++)
+               {
+                       if (startfrac >= trace->fraction)
+                               return;
+                       face = leaf->firstleafface[i];
+                       if (face->collisions && face->collisionmarkframe != markframe)
+                       {
+                               face->collisionmarkframe = markframe;
+                               if (BoxesOverlap(segmentmins, segmentmaxs, face->mins, face->maxs))
+                                       Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                       }
+               }
+       }
+}
 
-               if (!frontwinding)
+static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
+{
+       int i, sides;
+       float nodesegmentmins[3], nodesegmentmaxs[3];
+       q3mleaf_t *leaf;
+       colbrushf_t *brush;
+       q3mface_t *face;
+       nodesegmentmins[0] = max(segmentmins[0], node->mins[0]);
+       nodesegmentmins[1] = max(segmentmins[1], node->mins[1]);
+       nodesegmentmins[2] = max(segmentmins[2], node->mins[2]);
+       nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0]);
+       nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1]);
+       nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2]);
+       if (nodesegmentmins[0] > nodesegmentmaxs[0] || nodesegmentmins[1] > nodesegmentmaxs[1] || nodesegmentmins[2] > nodesegmentmaxs[2])
+               return;
+       if (node->isnode)
+       {
+               // recurse down node sides
+               sides = BoxOnPlaneSide(segmentmins, segmentmaxs, node->plane);
+               if (sides == 3)
                {
-                       if (side == 0)
-                               AddPortalToNodes (portal, back, other_node);
-                       else
-                               AddPortalToNodes (portal, other_node, back);
-                       continue;
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, nodesegmentmins, nodesegmentmaxs);
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[1], thisbrush_start, thisbrush_end, markframe, nodesegmentmins, nodesegmentmaxs);
                }
-               if (!backwinding)
+               else if (sides == 2)
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[1], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+               else // sides == 1
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+               /*
+               dist = node->plane->dist - (1.0f / 8.0f);
+               for (i = 0, ps = thisbrush_start->points, pe = thisbrush_end->points;i < thisbrush_start->numpoints;i++, ps++, pe++)
                {
-                       if (side == 0)
-                               AddPortalToNodes (portal, front, other_node);
-                       else
-                               AddPortalToNodes (portal, other_node, front);
-                       continue;
+                       if (DotProduct(ps->v, node->plane->normal) >= dist || DotProduct(pe->v, node->plane->normal) >= dist)
+                       {
+                               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, nodesegmentmins, nodesegmentmaxs);
+                               break;
+                       }
                }
-
-               // the winding is split
-               splitportal = AllocPortal ();
-               temp = splitportal->chain;
-               *splitportal = *portal;
-               splitportal->chain = temp;
-               splitportal->winding = backwinding;
-               FreeWinding (portal->winding);
-               portal->winding = frontwinding;
-
-               if (side == 0)
+               */
+               /*
+               dist = node->plane->dist + (1.0f / 8.0f);
+               for (i = 0, ps = thisbrush_start->points, pe = thisbrush_end->points;i < thisbrush_start->numpoints;i++, ps++, pe++)
+               {
+                       if (DotProduct(ps->v, node->plane->normal) <= dist || DotProduct(pe->v, node->plane->normal) <= dist)
+                       {
+                               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[1], thisbrush_start, thisbrush_end, markframe, nodesegmentmins, nodesegmentmaxs);
+                               break;
+                       }
+               }
+               */
+               /*
+               sides = BoxOnPlaneSide(boxstartmins, boxstartmaxs, node->plane) | BoxOnPlaneSide(boxendmins, boxendmaxs, node->plane);
+               if (sides & 1)
+                       Mod_Q3BSP_TraceBox_RecursiveBSPNode(trace, node->children[0], boxstartmins, boxstartmaxs, boxendmins, boxendmaxs);
+               if (sides & 2)
+                       Mod_Q3BSP_TraceBox_RecursiveBSPNode(trace, node->children[1], boxstartmins, boxstartmaxs, boxendmins, boxendmaxs);
+               */
+       }
+       else
+       {
+               // hit a leaf
+               leaf = (q3mleaf_t *)node;
+               for (i = 0;i < leaf->numleafbrushes;i++)
                {
-                       AddPortalToNodes (portal, front, other_node);
-                       AddPortalToNodes (splitportal, back, other_node);
+                       brush = leaf->firstleafbrush[i]->colbrushf;
+                       if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
+                       {
+                               brush->markframe = markframe;
+                               Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, leaf->firstleafbrush[i]->colbrushf, leaf->firstleafbrush[i]->colbrushf);
+                       }
                }
-               else
+               if (mod_q3bsp_curves_collisions.integer)
                {
-                       AddPortalToNodes (portal, other_node, front);
-                       AddPortalToNodes (splitportal, other_node, back);
+                       for (i = 0;i < leaf->numleaffaces;i++)
+                       {
+                               face = leaf->firstleafface[i];
+                               // note: this can not be optimized with a face->collisionmarkframe because each triangle of the face would need to be marked as done individually (because each one is bbox culled individually), and if all are marked, then the face could be marked as done
+                               if (face->collisions && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                                       Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                       }
                }
        }
-
-       Mod_RecursiveNodePortals(front);
-       Mod_RecursiveNodePortals(back);
-}
-
-
-static void Mod_MakePortals(void)
-{
-       portalchain = NULL;
-       Mod_RecursiveNodePortals (loadmodel->nodes);
-       Mod_FinalizePortals();
 }
 
-static void Mod_BuildSurfaceNeighbors (msurface_t *surfaces, int numsurfaces, mempool_t *mempool)
+static void Mod_Q3BSP_TraceBox(model_t *model, trace_t *trace, const vec3_t boxstartmins, const vec3_t boxstartmaxs, const vec3_t boxendmins, const vec3_t boxendmaxs, int hitsupercontentsmask)
 {
-       #if 0
-       int surfnum, vertnum, snum, vnum;
-       msurface_t *surf, *s;
-       float *v0, *v1, *v2, *v3;
-       for (surf = surfaces, surfnum = 0;surfnum < numsurfaces;surf++, surfnum++)
+       int i;
+       float segmentmins[3], segmentmaxs[3];
+       colbrushf_t *thisbrush_start, *thisbrush_end;
+       matrix4x4_t startmatrix, endmatrix;
+       static int markframe = 0;
+       q3mface_t *face;
+       memset(trace, 0, sizeof(*trace));
+       trace->fraction = 1;
+       trace->hitsupercontentsmask = hitsupercontentsmask;
+       Matrix4x4_CreateIdentity(&startmatrix);
+       Matrix4x4_CreateIdentity(&endmatrix);
+       segmentmins[0] = min(boxstartmins[0], boxendmins[0]);
+       segmentmins[1] = min(boxstartmins[1], boxendmins[1]);
+       segmentmins[2] = min(boxstartmins[2], boxendmins[2]);
+       segmentmaxs[0] = max(boxstartmaxs[0], boxendmaxs[0]);
+       segmentmaxs[1] = max(boxstartmaxs[1], boxendmaxs[1]);
+       segmentmaxs[2] = max(boxstartmaxs[2], boxendmaxs[2]);
+       if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(boxstartmins, boxstartmaxs) && VectorCompare(boxendmins, boxendmaxs))
        {
-               surf->neighborsurfaces = Mem_Alloc(mempool, surf->poly_numverts * sizeof(msurface_t *));
-               for (vertnum = 0;vertnum < surf->poly_numverts;vertnum++)
+               // line trace
+               if (model->brushq3.submodel)
                {
-                       v0 = surf->poly_verts + ((vertnum + 1) % surf->poly_numverts) * 3;
-                       v1 = surf->poly_verts + vertnum * 3;
-                       surf->neighborsurfaces[vertnum] = NULL;
-                       for (s = surfaces, snum = 0;snum < numsurfaces;s++, snum++)
+                       for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
+                               if (model->brushq3.data_thismodel->firstbrush[i].colbrushf)
+                                       Collision_TraceLineBrushFloat(trace, boxstartmins, boxendmins, model->brushq3.data_thismodel->firstbrush[i].colbrushf, model->brushq3.data_thismodel->firstbrush[i].colbrushf);
+                       if (mod_q3bsp_curves_collisions.integer)
                        {
-                               if (s == surf)
-                                       continue;
-                               for (vnum = 0, v2 = s->poly_verts + (s->poly_numverts - 1) * 3, v3 = s->poly_verts;vnum < s->poly_numverts;vnum++, v2 = v3, v3 += 3)
+                               for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
                                {
-                                       if (v0[0] == v2[0] && v0[1] == v2[1] && v0[2] == v2[2] && v1[0] == v3[0] && v1[1] == v3[1] && v1[2] == v3[2])
-                                       {
-                                               surf->neighborsurfaces[vertnum] = s;
-                                               break;
-                                       }
+                                       face = model->brushq3.data_thismodel->firstface + i;
+                                       if (face->collisions)
+                                               Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               }
+                       }
+               }
+               else
+                       Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model->brushq3.data_nodes, boxstartmins, boxendmins, 0, 1, boxstartmins, boxendmins, ++markframe);
+       }
+       else
+       {
+               // box trace, performed as brush trace
+               thisbrush_start = Collision_BrushForBox(&startmatrix, boxstartmins, boxstartmaxs);
+               thisbrush_end = Collision_BrushForBox(&endmatrix, boxendmins, boxendmaxs);
+               if (model->brushq3.submodel)
+               {
+                       for (i = 0;i < model->brushq3.data_thismodel->numbrushes;i++)
+                               if (model->brushq3.data_thismodel->firstbrush[i].colbrushf)
+                                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, model->brushq3.data_thismodel->firstbrush[i].colbrushf, model->brushq3.data_thismodel->firstbrush[i].colbrushf);
+                       if (mod_q3bsp_curves_collisions.integer)
+                       {
+                               for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
+                               {
+                                       face = model->brushq3.data_thismodel->firstface + i;
+                                       if (face->collisions)
+                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
                                }
-                               if (vnum < s->poly_numverts)
-                                       break;
                        }
                }
+               else
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model->brushq3.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
        }
-       #endif
 }
 
-/*
-=================
-Mod_LoadBrushModel
-=================
-*/
-extern void R_Model_Brush_DrawSky(entity_render_t *ent);
-extern void R_Model_Brush_Draw(entity_render_t *ent);
-//extern void R_Model_Brush_DrawFakeShadow(entity_render_t *ent);
-extern void R_Model_Brush_DrawBaseLighting(entity_render_t *ent);
-extern void R_Model_Brush_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int visiblevolume);
-extern void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius2, float lightdistbias, float lightsubtract, float *lightcolor);
-void Mod_LoadBrushModel (model_t *mod, void *buffer)
-{
-       int                     i, j;
-       dheader_t       *header;
-       dmodel_t        *bm;
-       mempool_t       *mainmempool;
-       char            *loadname;
-       model_t         *originalloadmodel;
-
-       mod->type = mod_brush;
 
-       header = (dheader_t *)buffer;
+static int Mod_Q3BSP_BoxTouchingPVS_RecursiveBSPNode(const model_t *model, const q3mnode_t *node, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+{
+       int clusterindex;
+loc0:
+       if (!node->isnode)
+       {
+               // leaf
+               clusterindex = ((q3mleaf_t *)node)->clusterindex;
+               return pvs[clusterindex >> 3] & (1 << (clusterindex & 7));
+       }
 
-       i = LittleLong (header->version);
-       if (i != BSPVERSION && i != 30)
-               Host_Error ("Mod_LoadBrushModel: %s has wrong version number (%i should be %i (Quake) or 30 (HalfLife))", mod->name, i, BSPVERSION);
-       mod->ishlbsp = i == 30;
-       if (loadmodel->isworldmodel)
+       // node - recurse down the BSP tree
+       switch (BoxOnPlaneSide(mins, maxs, node->plane))
        {
-               Cvar_SetValue("halflifebsp", mod->ishlbsp);
-               // until we get a texture for it...
-               R_ResetQuakeSky();
+       case 1: // front
+               node = node->children[0];
+               goto loc0;
+       case 2: // back
+               node = node->children[1];
+               goto loc0;
+       default: // crossing
+               if (Mod_Q3BSP_BoxTouchingPVS_RecursiveBSPNode(model, node->children[0], pvs, mins, maxs))
+                       return true;
+               node = node->children[1];
+               goto loc0;
        }
+       // never reached
+       return false;
+}
 
-// swap all the lumps
-       mod_base = (qbyte *)header;
+static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+{
+       return Mod_Q3BSP_BoxTouchingPVS_RecursiveBSPNode(model, model->brushq3.data_nodes, pvs, mins, maxs);
+}
 
-       for (i=0 ; i<sizeof(dheader_t)/4 ; i++)
-               ((int *)header)[i] = LittleLong ( ((int *)header)[i]);
+//Returns PVS data for a given point
+//(note: can return NULL)
+static qbyte *Mod_Q3BSP_GetPVS(model_t *model, const vec3_t p)
+{
+       q3mnode_t *node;
+       Mod_CheckLoaded(model);
+       node = model->brushq3.data_nodes;
+       while (node->isnode)
+               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
+       if (((q3mleaf_t *)node)->clusterindex >= 0)
+               return model->brushq3.data_pvschains + ((q3mleaf_t *)node)->clusterindex * model->brushq3.num_pvschainlength;
+       else
+               return NULL;
+}
 
-// load into heap
+static void Mod_Q3BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, q3mnode_t *node)
+{
+       int i;
+       float d;
+       qbyte *pvs;
 
-       // store which lightmap format to use
-       mod->lightmaprgba = r_lightmaprgba.integer;
-
-       Mod_LoadEntities (&header->lumps[LUMP_ENTITIES]);
-       Mod_LoadVertexes (&header->lumps[LUMP_VERTEXES]);
-       Mod_LoadEdges (&header->lumps[LUMP_EDGES]);
-       Mod_LoadSurfedges (&header->lumps[LUMP_SURFEDGES]);
-       Mod_LoadTextures (&header->lumps[LUMP_TEXTURES]);
-       Mod_LoadLighting (&header->lumps[LUMP_LIGHTING]);
-       Mod_LoadPlanes (&header->lumps[LUMP_PLANES]);
-       Mod_LoadTexinfo (&header->lumps[LUMP_TEXINFO]);
-       Mod_LoadFaces (&header->lumps[LUMP_FACES]);
-       Mod_LoadMarksurfaces (&header->lumps[LUMP_MARKSURFACES]);
-       Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
-       Mod_LoadLeafs (&header->lumps[LUMP_LEAFS]);
-       Mod_LoadNodes (&header->lumps[LUMP_NODES]);
-       Mod_LoadClipnodes (&header->lumps[LUMP_CLIPNODES]);
-       Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
-
-       Mod_MakeHull0 ();
-       Mod_MakePortals();
+       while (node->isnode)
+       {
+               d = PlaneDiff(org, node->plane);
+               if (d > radius)
+                       node = node->children[0];
+               else if (d < -radius)
+                       node = node->children[1];
+               else
+               {
+                       // go down both sides
+                       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
+                       node = node->children[1];
+               }
+       }
+       // if this is a leaf with a pvs, accumulate the pvs bits
+       if (((q3mleaf_t *)node)->clusterindex >= 0)
+       {
+               pvs = model->brushq3.data_pvschains + ((q3mleaf_t *)node)->clusterindex * model->brushq3.num_pvschainlength;
+               for (i = 0;i < pvsbytes;i++)
+                       pvsbuffer[i] |= pvs[i];
+       }
+       return;
+}
 
-       mod->numframes = 2;             // regular and alternate animation
+//Calculates a PVS that is the inclusive or of all leafs within radius pixels
+//of the given point.
+static int Mod_Q3BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
+{
+       int bytes = model->brushq3.num_pvschainlength;
+       bytes = min(bytes, pvsbufferlength);
+       memset(pvsbuffer, 0, bytes);
+       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brushq3.data_nodes);
+       return bytes;
+}
 
-       mainmempool = mod->mempool;
-       loadname = mod->name;
 
-       Mod_LoadLightList ();
-       originalloadmodel = loadmodel;
+static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
+{
+       int supercontents = 0;
+       if (nativecontents & Q2CONTENTS_SOLID)
+               supercontents |= SUPERCONTENTS_SOLID;
+       if (nativecontents & Q2CONTENTS_WATER)
+               supercontents |= SUPERCONTENTS_WATER;
+       if (nativecontents & Q2CONTENTS_SLIME)
+               supercontents |= SUPERCONTENTS_SLIME;
+       if (nativecontents & Q2CONTENTS_LAVA)
+               supercontents |= SUPERCONTENTS_LAVA;
+       return supercontents;
+}
 
-//
-// set up the submodels (FIXME: this is confusing)
-//
-       for (i = 0;i < mod->numsubmodels;i++)
-       {
-               int k, l;
-               float dist, modelyawradius, modelradius, *vec;
-               msurface_t *surf;
+static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
+{
+       int nativecontents = 0;
+       if (supercontents & SUPERCONTENTS_SOLID)
+               nativecontents |= Q2CONTENTS_SOLID;
+       if (supercontents & SUPERCONTENTS_WATER)
+               nativecontents |= Q2CONTENTS_WATER;
+       if (supercontents & SUPERCONTENTS_SLIME)
+               nativecontents |= Q2CONTENTS_SLIME;
+       if (supercontents & SUPERCONTENTS_LAVA)
+               nativecontents |= Q2CONTENTS_LAVA;
+       return nativecontents;
+}
 
-               mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
-               mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
-               modelyawradius = 0;
-               modelradius = 0;
+//extern void R_Q3BSP_DrawSky(struct entity_render_s *ent);
+extern void R_Q3BSP_Draw(struct entity_render_s *ent);
+extern void R_Q3BSP_DrawShadowVolume(struct entity_render_s *ent, vec3_t relativelightorigin, float lightradius);
+extern void R_Q3BSP_DrawLight(struct entity_render_s *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
+void Mod_Q3BSP_Load(model_t *mod, void *buffer)
+{
+       int i;
+       q3dheader_t *header;
+       float corner[3], yawradius, modelradius;
 
-               bm = &mod->submodels[i];
+       mod->type = mod_brushq3;
+       mod->numframes = 1;
+       mod->numskins = 1;
 
-               mod->hulls[0].firstclipnode = bm->headnode[0];
-               for (j=1 ; j<MAX_MAP_HULLS ; j++)
-               {
-                       mod->hulls[j].firstclipnode = bm->headnode[j];
-                       mod->hulls[j].lastclipnode = mod->numclipnodes - 1;
-               }
+       header = (q3dheader_t *)buffer;
 
-               mod->firstmodelsurface = bm->firstface;
-               mod->nummodelsurfaces = bm->numfaces;
+       i = LittleLong(header->version);
+       if (i != Q3BSPVERSION)
+               Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", false);
+               // until we get a texture for it...
+               R_ResetQuakeSky();
+       }
 
-               // this gets altered below if sky is used
-               mod->DrawSky = NULL;
-               mod->Draw = R_Model_Brush_Draw;
-               mod->DrawFakeShadow = NULL;
-               mod->DrawBaseLighting = R_Model_Brush_DrawBaseLighting;
-               mod->DrawShadowVolume = R_Model_Brush_DrawShadowVolume;
-               mod->DrawLight = R_Model_Brush_DrawLight;
-               mod->texturesurfacechains = Mem_Alloc(originalloadmodel->mempool, mod->numtextures * sizeof(msurface_t *));
-               if (mod->nummodelsurfaces)
-               {
-                       // LordHavoc: calculate bmodel bounding box rather than trusting what it says
-                       for (j = 0, surf = &mod->surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
-                       {
-                               // we only need to have a drawsky function if it is used (usually only on world model)
-                               if (surf->texinfo->texture->shader == &Cshader_sky)
-                                       mod->DrawSky = R_Model_Brush_DrawSky;
-                               // link into texture chain
-                               surf->texturechain = mod->texturesurfacechains[surf->texinfo->texture - mod->textures];
-                               mod->texturesurfacechains[surf->texinfo->texture - mod->textures] = surf;
-                               // calculate bounding shapes
-                               for (k = 0;k < surf->numedges;k++)
-                               {
-                                       l = mod->surfedges[k + surf->firstedge];
-                                       if (l > 0)
-                                               vec = mod->vertexes[mod->edges[l].v[0]].position;
-                                       else
-                                               vec = mod->vertexes[mod->edges[-l].v[1]].position;
-                                       if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
-                                       if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
-                                       if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
-                                       if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
-                                       if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
-                                       if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
-                                       dist = vec[0]*vec[0]+vec[1]*vec[1];
-                                       if (modelyawradius < dist)
-                                               modelyawradius = dist;
-                                       dist += vec[2]*vec[2];
-                                       if (modelradius < dist)
-                                               modelradius = dist;
-                               }
-                       }
-                       modelyawradius = sqrt(modelyawradius);
-                       modelradius = sqrt(modelradius);
-                       mod->yawmins[0] = mod->yawmins[1] = -(mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
-                       mod->yawmins[2] = mod->normalmins[2];
-                       mod->yawmaxs[2] = mod->normalmaxs[2];
-                       mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
-                       mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
-                       mod->radius = modelradius;
-                       mod->radius2 = modelradius * modelradius;
-                       // LordHavoc: build triangle meshs for entire model's geometry
-                       // (only used for shadow volumes)
-                       mod->shadowmesh = Mod_ShadowMesh_Begin(originalloadmodel->mempool);
-                       for (j = 0, surf = &mod->surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
-                               if (surf->flags & SURF_SHADOWCAST)
-                                       Mod_ShadowMesh_AddPolygon(originalloadmodel->mempool, mod->shadowmesh, surf->poly_numverts, surf->poly_verts);
-                       mod->shadowmesh = Mod_ShadowMesh_Finish(originalloadmodel->mempool, mod->shadowmesh);
-                       Mod_ShadowMesh_CalcBBox(mod->shadowmesh, mod->shadowmesh_mins, mod->shadowmesh_maxs, mod->shadowmesh_center, &mod->shadowmesh_radius);
-               }
-               else
-               {
-                       // LordHavoc: empty submodel (lacrima.bsp has such a glitch)
-                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadname);
-                       VectorClear(mod->normalmins);
-                       VectorClear(mod->normalmaxs);
-                       VectorClear(mod->yawmins);
-                       VectorClear(mod->yawmaxs);
-                       VectorClear(mod->rotatedmins);
-                       VectorClear(mod->rotatedmaxs);
-                       mod->radius = 0;
-                       mod->radius2 = 0;
-                       mod->shadowmesh = NULL;
-               }
-               Mod_BuildSurfaceNeighbors(mod->surfaces + mod->firstmodelsurface, mod->nummodelsurfaces, originalloadmodel->mempool);
+       mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
+       mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
+       mod->brush.GetPVS = Mod_Q3BSP_GetPVS;
+       mod->brush.FatPVS = Mod_Q3BSP_FatPVS;
+       mod->brush.BoxTouchingPVS = Mod_Q3BSP_BoxTouchingPVS;
+       mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
+       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
+       mod->brush.TraceBox = Mod_Q3BSP_TraceBox;
+       //mod->DrawSky = R_Q3BSP_DrawSky;
+       mod->Draw = R_Q3BSP_Draw;
+       mod->DrawShadowVolume = R_Q3BSP_DrawShadowVolume;
+       mod->DrawLight = R_Q3BSP_DrawLight;
 
-               mod->numleafs = bm->visleafs;
+       mod_base = (qbyte *)header;
 
-               // LordHavoc: only register submodels if it is the world
-               // (prevents bsp models from replacing world submodels)
-               if (loadmodel->isworldmodel && i < (mod->numsubmodels - 1))
+       // swap all the lumps
+       for (i = 0;i < (int) sizeof(*header) / 4;i++)
+               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+
+       Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
+       Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
+       Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
+       Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
+       Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
+       Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
+       Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
+       Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
+       Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
+       Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
+       Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
+       Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
+       Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
+       Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
+       Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
+       Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
+       Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
+       loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
+
+       for (i = 0;i < loadmodel->brushq3.num_models;i++)
+       {
+               if (i == 0)
+                       mod = loadmodel;
+               else
                {
-                       char    name[10];
+                       char name[10];
+                       // LordHavoc: only register submodels if it is the world
+                       // (prevents bsp models from replacing world submodels)
+                       if (!loadmodel->isworldmodel)
+                               continue;
                        // duplicate the basic information
-                       sprintf (name, "*%i", i+1);
-                       loadmodel = Mod_FindName (name);
-                       *loadmodel = *mod;
-                       strcpy (loadmodel->name, name);
+                       sprintf(name, "*%i", i);
+                       mod = Mod_FindName(name);
+                       *mod = *loadmodel;
+                       strcpy(mod->name, name);
                        // textures and memory belong to the main model
-                       loadmodel->texturepool = NULL;
-                       loadmodel->mempool = NULL;
-                       mod = loadmodel;
+                       mod->texturepool = NULL;
+                       mod->mempool = NULL;
                }
+               mod->brushq3.data_thismodel = loadmodel->brushq3.data_models + i;
+               mod->brushq3.submodel = i;
+
+               VectorCopy(mod->brushq3.data_thismodel->mins, mod->normalmins);
+               VectorCopy(mod->brushq3.data_thismodel->maxs, mod->normalmaxs);
+               corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
+               corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
+               corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
+               modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
+               yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
+               mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
+               mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
+               mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
+               mod->yawmins[0] = mod->yawmins[1] = -yawradius;
+               mod->yawmins[2] = mod->normalmins[2];
+               mod->yawmaxs[2] = mod->normalmaxs[2];
+               mod->radius = modelradius;
+               mod->radius2 = modelradius * modelradius;
        }
+}
 
-       loadmodel = originalloadmodel;
-       Mod_ProcessLightList ();
+void Mod_IBSP_Load(model_t *mod, void *buffer)
+{
+       int i = LittleLong(((int *)buffer)[1]);
+       if (i == Q3BSPVERSION)
+               Mod_Q3BSP_Load(mod,buffer);
+       else if (i == Q2BSPVERSION)
+               Mod_Q2BSP_Load(mod,buffer);
+       else
+               Host_Error("Mod_IBSP_Load: unknown/unsupported version %i\n", i);
+}
+
+void Mod_MAP_Load(model_t *mod, void *buffer)
+{
+       Host_Error("Mod_MAP_Load: not yet implemented\n");
 }