]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
changed brush model API - now uses function pointers for some of the brush model...
[xonotic/darkplaces.git] / model_brush.c
index 8604c43b716e9a283c1d9ee1d0c3a95c2882a7d1..10cd356477ea5e9dd70f1b9e05d56fd8859ea7b3 100644 (file)
@@ -8,7 +8,7 @@ of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 See the GNU General Public License for more details.
 
@@ -19,102 +19,260 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "quakedef.h"
+#include "image.h"
+#include "r_shadow.h"
 
-byte   mod_novis[MAX_MAP_LEAFS/8];
+// note: model_shared.c sets up r_notexture, and r_surf_notexture
 
-qboolean       hlbsp; // LordHavoc: true if it is a HalfLife BSP file (version 30)
+qbyte mod_q1bsp_novis[(MAX_MAP_LEAFS + 7)/ 8];
 
-cvar_t gl_subdivide_size = {"gl_subdivide_size", "128", true};
-cvar_t halflifebsp = {"halflifebsp", "0"};
+//cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128"};
+cvar_t halflifebsp = {0, "halflifebsp", "0"};
+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"};
 
-/*
-===============
-Mod_BrushInit
-===============
-*/
-void Mod_BrushInit (void)
+void Mod_BrushInit(void)
 {
-       Cvar_RegisterVariable (&gl_subdivide_size);
-       Cvar_RegisterVariable (&halflifebsp);
-       memset (mod_novis, 0xff, sizeof(mod_novis));
+//     Cvar_RegisterVariable(&r_subdivide_size);
+       Cvar_RegisterVariable(&halflifebsp);
+       Cvar_RegisterVariable(&r_novis);
+       Cvar_RegisterVariable(&r_miplightmaps);
+       Cvar_RegisterVariable(&r_lightmaprgba);
+       Cvar_RegisterVariable(&r_nosurftextures);
+       Cvar_RegisterVariable(&r_sortsurfaces);
+       memset(mod_q1bsp_novis, 0xff, sizeof(mod_q1bsp_novis));
 }
 
-/*
-===============
-Mod_PointInLeaf
-===============
-*/
-mleaf_t *Mod_PointInLeaf (vec3_t p, model_t *model)
+static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 {
-       mnode_t         *node;
-       
-//     if (!model || !model->nodes)
-//             Sys_Error ("Mod_PointInLeaf: bad model");
+       mnode_t *node;
 
-       node = model->nodes;
-       if (node->contents < 0)
-               return (mleaf_t *)node;
-       while (1)
+       if (model == NULL)
+               return NULL;
+
+       Mod_CheckLoaded(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;
+       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;
+}
+
+static int Mod_Q1BSP_PointContents(model_t *model, const vec3_t p)
+{
+       mnode_t *node;
+
+       if (model == NULL)
+               return CONTENTS_EMPTY;
+
+       Mod_CheckLoaded(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;
+       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)->contents;
+}
+
+typedef struct findnonsolidlocationinfo_s
+{
+       vec3_t center;
+       vec_t radius;
+       vec3_t nudge;
+       vec_t bestdist;
+       model_t *model;
+}
+findnonsolidlocationinfo_t;
+
+#if 0
+extern cvar_t samelevel;
+#endif
+static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
+{
+       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;
+       surfmesh_t *mesh;
+       for (surfnum = 0, mark = leaf->firstmarksurface;surfnum < leaf->nummarksurfaces;surfnum++, mark++)
        {
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct (p,node->plane->normal)) < node->plane->dist];
-               if (node->contents < 0)
-                       return (mleaf_t *)node;
+               surf = info->model->surfaces + *mark;
+               if (surf->flags & SURF_SOLIDCLIP)
+               {
+#if 0
+                       VectorCopy(surf->plane->normal, surfnormal);
+                       if (surf->flags & SURF_PLANEBACK)
+                               VectorNegate(surfnormal, surfnormal);
+#endif
+                       for (mesh = surf->mesh;mesh;mesh = mesh->chain)
+                       {
+                               for (k = 0;k < mesh->numtriangles;k++)
+                               {
+                                       tri = mesh->element3i + k * 3;
+                                       VectorCopy((mesh->vertex3f + tri[0] * 3), vert[0]);
+                                       VectorCopy((mesh->vertex3f + tri[1] * 3), vert[1]);
+                                       VectorCopy((mesh->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);
+                                                                               }
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
        }
-       
-       return NULL;    // never reached
 }
-/*
-mleaf_t *Mod_PointInLeaf (vec3_t p, model_t *model)
+
+static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 {
-       mnode_t         *node;
-       float           d;
-       mplane_t        *plane;
-       
-       if (!model || !model->nodes)
-               Sys_Error ("Mod_PointInLeaf: bad model");
+       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]);
+       }
+}
 
-       node = model->nodes;
-       while (1)
+static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, vec3_t in, vec3_t out, float radius)
+{
+       int i;
+       findnonsolidlocationinfo_t info;
+       if (model == NULL)
        {
-               if (node->contents < 0)
-                       return (mleaf_t *)node;
-               plane = node->plane;
-               d = DotProduct (p,plane->normal) - plane->dist;
-               if (d > 0)
-                       node = node->children[0];
-               else
-                       node = node->children[1];
+               VectorCopy(in, out);
+               return;
+       }
+       VectorCopy(in, info.center);
+       info.radius = radius;
+       info.model = model;
+       i = 0;
+       do
+       {
+               VectorClear(info.nudge);
+               info.bestdist = radius;
+               Mod_Q1BSP_FindNonSolidLocation_r(&info, model->nodes + model->hulls[0].firstclipnode);
+               VectorAdd(info.center, info.nudge, info.center);
        }
-       
-       return NULL;    // never reached
+       while (info.bestdist < radius && ++i < 10);
+       VectorCopy(info.center, out);
 }
-*/
 
-/*
-===================
-Mod_DecompressVis
-===================
-*/
-byte *Mod_DecompressVis (byte *in, model_t *model)
+static qbyte *Mod_Q1BSP_DecompressVis(model_t *model, qbyte *in)
 {
-       static byte     decompressed[MAX_MAP_LEAFS/8];
-       int             c;
-       byte    *out;
-       int             row;
+       static qbyte decompressed[MAX_MAP_LEAFS/8];
+       int c;
+       qbyte *out;
+       int row;
 
-       row = (model->numleafs+7)>>3;   
+       row = (model->numleafs+7)>>3;
        out = decompressed;
 
-       if (!in)
-       {       // no vis info, so make all visible
-               while (row)
-               {
-                       *out++ = 0xff;
-                       row--;
-               }
-               return decompressed;            
-       }
-
        do
        {
                if (*in)
@@ -122,7 +280,7 @@ byte *Mod_DecompressVis (byte *in, model_t *model)
                        *out++ = *in++;
                        continue;
                }
-       
+
                c = in[1];
                in += 2;
                while (c)
@@ -131,353 +289,365 @@ byte *Mod_DecompressVis (byte *in, model_t *model)
                        c--;
                }
        } while (out - decompressed < row);
-       
+
        return decompressed;
 }
 
-byte *Mod_LeafPVS (mleaf_t *leaf, model_t *model)
+static qbyte *Mod_Q1BSP_LeafPVS(model_t *model, mleaf_t *leaf)
 {
-       if (leaf == model->leafs)
-               return mod_novis;
-       return Mod_DecompressVis (leaf->compressed_vis, model);
+       if (r_novis.integer || leaf == model->leafs || leaf->compressed_vis == NULL)
+               return mod_q1bsp_novis;
+       return Mod_Q1BSP_DecompressVis(model, leaf->compressed_vis);
 }
 
-extern byte    *mod_base;
-
-extern cvar_t r_fullbrights;
-
-/*
-=================
-Mod_LoadTextures
-=================
-*/
-void Mod_LoadTextures (lump_t *l)
+static void Mod_Q1BSP_LoadTextures(lump_t *l)
 {
-       int             i, j, num, max, altmax;
-       miptex_t        *mt;
-       texture_t       *tx, *tx2;
-       texture_t       *anims[10];
-       texture_t       *altanims[10];
+       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;
-       byte    *data;
-       int             *dofs;
+       qbyte *data, *mtdata;
+       char name[256];
+
+       loadmodel->textures = NULL;
 
        if (!l->filelen)
-       {
-               loadmodel->textures = NULL;
                return;
-       }
 
        m = (dmiptexlump_t *)(mod_base + l->fileofs);
-       
+
        m->nummiptex = LittleLong (m->nummiptex);
-       
-       loadmodel->numtextures = m->nummiptex;
-       loadmodel->textures = Hunk_AllocName (m->nummiptex * sizeof(*loadmodel->textures), va("%s texture headers", loadname));
+
+       // 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));
+
+       // fill out all slots with notexture
+       for (i = 0, tx = loadmodel->textures;i < loadmodel->numtextures;i++, tx++)
+       {
+               tx->number = i;
+               strcpy(tx->name, "NO TEXTURE FOUND");
+               tx->width = 16;
+               tx->height = 16;
+               tx->skin.base = r_notexture;
+               tx->shader = &Cshader_wall_lightmap;
+               tx->flags = SURF_SOLIDCLIP;
+               if (i == loadmodel->numtextures - 1)
+               {
+                       tx->flags |= SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->shader = &Cshader_water;
+               }
+               tx->currentframe = tx;
+       }
 
        // just to work around bounds checking when debugging with it (array index out of bounds error thing)
        dofs = m->dataofs;
-       for (i=0 ; i<m->nummiptex ; i++)
+       // LordHavoc: mostly rewritten map texture loader
+       for (i = 0;i < m->nummiptex;i++)
        {
                dofs[i] = LittleLong(dofs[i]);
-               if (dofs[i] == -1)
+               if (dofs[i] == -1 || r_nosurftextures.integer)
                        continue;
-               mt = (miptex_t *)((byte *)m + dofs[i]);
-               mt->width = LittleLong (mt->width);
-               mt->height = LittleLong (mt->height);
-               for (j=0 ; j<MIPLEVELS ; j++)
-                       mt->offsets[j] = LittleLong (mt->offsets[j]);
-               
-               if ( (mt->width & 15) || (mt->height & 15) )
-                       Host_Error ("Texture %s is not 16 aligned", mt->name);
-               // LordHavoc: rewriting the map texture loader for GLQuake
-               tx = Hunk_AllocName (sizeof(texture_t), va("%s textures", loadname));
-               loadmodel->textures[i] = tx;
-
-               // LordHavoc: force all names to lowercase and make sure they are terminated while copying
-               for (j = 0;mt->name[j] && j < 15;j++)
-               {
-                       if (mt->name[j] >= 'A' && mt->name[j] <= 'Z')
-                               tx->name[j] = mt->name[j] + ('a' - 'A');
-                       else
-                               tx->name[j] = mt->name[j];
-               }
-               for (;j < 16;j++)
-                       tx->name[j] = 0;
-
-               for (j=0 ; j<MIPLEVELS ; j++)
-                       tx->offsets[j] = 0;
-               tx->transparent = false;
-               data = loadimagepixels(tx->name, false, 0, 0);
-               if (data)
+               dmiptex = (miptex_t *)((qbyte *)m + dofs[i]);
+
+               // make sure name is no more than 15 characters
+               for (j = 0;dmiptex->name[j] && j < 15;j++)
+                       name[j] = dmiptex->name[j];
+               name[j] = 0;
+
+               mtwidth = LittleLong(dmiptex->width);
+               mtheight = LittleLong(dmiptex->height);
+               mtdata = NULL;
+               j = LittleLong(dmiptex->offsets[0]);
+               if (j)
                {
-                       if (!hlbsp && !strncmp(tx->name,"sky",3) && image_width == 256 && image_height == 128) // LordHavoc: HL sky textures are entirely unrelated
-                       {
-                               tx->width = image_width;
-                               tx->height = image_height;
-                               tx->transparent = false;
-                               tx->texture = NULL;
-                               tx->glowtexture = NULL;
-                               R_InitSky (data, 4);
-                       }
-                       else
+                       // texture included
+                       if (j < 40 || j + mtwidth * mtheight > l->filelen)
                        {
-                               tx->width = mt->width;
-                               tx->height = mt->height;
-                               tx->transparent = Image_CheckAlpha(data, image_width * image_height, true);
-                               tx->texture = R_LoadTexture (tx->name, image_width, image_height, data, TEXF_MIPMAP | (tx->transparent ? TEXF_ALPHA : 0) | TEXF_RGBA | TEXF_PRECACHE);
-                               tx->glowtexture = NULL;
+                               Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
+                               continue;
                        }
-                       qfree(data);
+                       mtdata = (qbyte *)dmiptex + j;
                }
-               else
+
+               if ((mtwidth & 15) || (mtheight & 15))
+                       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;
+               strcpy(tx->name, name);
+               tx->width = mtwidth;
+               tx->height = mtheight;
+
+               if (!tx->name[0])
                {
-                       if (!hlbsp && !strncmp(tx->name,"sky",3) && mt->width == 256 && mt->height == 128) // LordHavoc: HL sky textures are entirely unrelated
-                       {
-                               tx->width = mt->width;
-                               tx->height = mt->height;
-                               tx->transparent = false;
-                               tx->texture = NULL;
-                               tx->glowtexture = NULL;
-                               R_InitSky ((byte *)((int) mt + mt->offsets[0]), 1);
-                       }
-                       else
+                       sprintf(tx->name, "unnamed%i", i);
+                       Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
+               }
+
+               // LordHavoc: HL sky textures are entirely different than quake
+               if (!loadmodel->ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
+               {
+                       if (loadmodel->isworldmodel)
                        {
-                               if (hlbsp)
+                               data = loadimagepixels(tx->name, false, 0, 0);
+                               if (data)
                                {
-                                       if (mt->offsets[0]) // texture included
+                                       if (image_width == 256 && image_height == 128)
                                        {
-                                               data = W_ConvertWAD3Texture(mt);
-                                               if (data)
-                                               {
-                                                       tx->width = mt->width;
-                                                       tx->height = mt->height;
-                                                       tx->transparent = Image_CheckAlpha(data, mt->width * mt->height, true);
-                                                       tx->texture = R_LoadTexture (tx->name, mt->width, mt->height, data, TEXF_MIPMAP | (tx->transparent ? TEXF_ALPHA : 0) | TEXF_RGBA | TEXF_PRECACHE);
-                                                       tx->glowtexture = NULL;
-                                                       qfree(data);
-                                               }
-                                       }
-                                       if (!data)
-                                       {
-                                               data = W_GetTexture(mt->name);
-                                               // get the size from the wad texture
-                                               if (data)
-                                               {
-                                                       tx->width = image_width;
-                                                       tx->height = image_height;
-                                                       tx->transparent = Image_CheckAlpha(data, image_width * image_height, true);
-                                                       tx->texture = R_LoadTexture (tx->name, image_width, image_height, data, TEXF_MIPMAP | (tx->transparent ? TEXF_ALPHA : 0) | TEXF_RGBA | TEXF_PRECACHE);
-                                                       tx->glowtexture = NULL;
-                                                       qfree(data);
-                                               }
+                                               R_InitSky(data, 4);
+                                               Mem_Free(data);
                                        }
-                                       if (!data)
+                                       else
                                        {
-                                               tx->width = r_notexture_mip->width;
-                                               tx->height = r_notexture_mip->height;
-                                               tx->transparent = false;
-                                               tx->texture = R_LoadTexture ("notexture", tx->width, tx->height, (byte *)((int) r_notexture_mip + r_notexture_mip->offsets[0]), TEXF_MIPMAP | TEXF_PRECACHE);
-                                               tx->glowtexture = NULL;
+                                               Mem_Free(data);
+                                               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);
                                        }
                                }
-                               else
+                               else if (mtdata != NULL)
+                                       R_InitSky(mtdata, 1);
+                       }
+               }
+               else
+               {
+                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, false, true, true))
+                       {
+                               // did not find external texture, load it from the bsp or wad3
+                               if (loadmodel->ishlbsp)
                                {
-                                       if (mt->offsets[0]) // texture included
+                                       // 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)
                                        {
-                                               int fullbrights;
-                                               data = (byte *)((int) mt + mt->offsets[0]);
-                                               tx->width = mt->width;
-                                               tx->height = mt->height;
-                                               tx->transparent = false;
-                                               fullbrights = false;
-                                               if (r_fullbrights.value && tx->name[0] != '*')
+                                               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))
                                                {
-                                                       for (j = 0;j < tx->width*tx->height;j++)
+                                                       fogpixels = Mem_Alloc(tempmempool, image_width * image_height * 4);
+                                                       for (j = 0;j < image_width * image_height * 4;j += 4)
                                                        {
-                                                               if (data[j] >= 224) // fullbright
-                                                               {
-                                                                       fullbrights = true;
-                                                                       break;
-                                                               }
+                                                               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);
                                                }
-                                               if (fullbrights)
-                                               {
-                                                       char name[64];
-                                                       byte *data2;
-                                                       data2 = qmalloc(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 (tx->name, tx->width, tx->height, data2, 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 (name, tx->width, tx->height, data2, TEXF_MIPMAP | TEXF_PRECACHE);
-                                                       qfree(data2);
-                                               }
-                                               else
-                                               {
-                                                       tx->texture = R_LoadTexture (tx->name, tx->width, tx->height, data, TEXF_MIPMAP | TEXF_PRECACHE);
-                                                       tx->glowtexture = NULL;
-                                               }
-                                       }
-                                       else // no texture, and no external replacement texture was found
-                                       {
-                                               tx->width = r_notexture_mip->width;
-                                               tx->height = r_notexture_mip->height;
-                                               tx->transparent = false;
-                                               tx->texture = R_LoadTexture ("notexture", tx->width, tx->height, (byte *)((int) r_notexture_mip + r_notexture_mip->offsets[0]), TEXF_MIPMAP | TEXF_PRECACHE);
-                                               tx->glowtexture = NULL;
                                        }
+                                       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)
+                        || !strncmp(tx->name,"*teleport",9)
+                        || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
+                               tx->flags |= SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA;
+                       else
+                               tx->flags |= SURF_WATERALPHA;
+                       tx->shader = &Cshader_water;
+               }
+               else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
+               {
+                       tx->flags |= SURF_DRAWSKY;
+                       tx->shader = &Cshader_sky;
+               }
+               else
+               {
+                       tx->flags |= SURF_LIGHTMAP;
+                       if (!tx->skin.fog)
+                               tx->flags |= SURF_SHADOWCAST | SURF_SHADOWLIGHT;
+                       tx->shader = &Cshader_wall_lightmap;
+               }
+
+               // start out with no animation
+               tx->currentframe = tx;
        }
 
-//
-// sequence the animations
-//
-       for (i=0 ; i<m->nummiptex ; i++)
+       // sequence the animations
+       for (i = 0;i < m->nummiptex;i++)
        {
-               tx = loadmodel->textures[i];
-               if (!tx || tx->name[0] != '+')
+               tx = loadmodel->textures + i;
+               if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
                        continue;
-               if (tx->anim_next)
+               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));
+               // find the number of frames in the animation
+               memset(anims, 0, sizeof(anims));
+               memset(altanims, 0, sizeof(altanims));
 
-               max = tx->name[1];
-               altmax = 0;
-               if (max >= 'a' && max <= 'z')
-                       max -= 'a' - 'A';
-               if (max >= '0' && max <= '9')
+               for (j = i;j < m->nummiptex;j++)
                {
-                       max -= '0';
-                       altmax = 0;
-                       anims[max] = tx;
-                       max++;
+                       tx2 = loadmodel->textures + j;
+                       if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
+                               continue;
+
+                       num = tx2->name[1];
+                       if (num >= '0' && num <= '9')
+                               anims[num - '0'] = tx2;
+                       else if (num >= 'a' && num <= 'j')
+                               altanims[num - 'a'] = tx2;
+                       else
+                               Con_Printf("Bad animating texture %s\n", tx->name);
                }
-               else if (max >= 'A' && max <= 'J')
+
+               max = altmax = 0;
+               for (j = 0;j < 10;j++)
                {
-                       altmax = max - 'A';
-                       max = 0;
-                       altanims[altmax] = tx;
-                       altmax++;
+                       if (anims[j])
+                               max = j + 1;
+                       if (altanims[j])
+                               altmax = j + 1;
                }
-               else
-                       Host_Error ("Bad animating texture %s", tx->name);
+               //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
 
-               for (j=i+1 ; j<m->nummiptex ; j++)
+               incomplete = false;
+               for (j = 0;j < max;j++)
                {
-                       tx2 = loadmodel->textures[j];
-                       if (!tx2 || tx2->name[0] != '+')
-                               continue;
-                       if (strcmp (tx2->name+2, tx->name+2))
-                               continue;
-
-                       num = tx2->name[1];
-                       if (num >= 'a' && num <= 'z')
-                               num -= 'a' - 'A';
-                       if (num >= '0' && num <= '9')
+                       if (!anims[j])
                        {
-                               num -= '0';
-                               anims[num] = tx2;
-                               if (num+1 > max)
-                                       max = num + 1;
+                               Con_Printf("Missing frame %i of %s\n", j, tx->name);
+                               incomplete = true;
                        }
-                       else if (num >= 'A' && num <= 'J')
+               }
+               for (j = 0;j < altmax;j++)
+               {
+                       if (!altanims[j])
                        {
-                               num = num - 'A';
-                               altanims[num] = tx2;
-                               if (num+1 > altmax)
-                                       altmax = num+1;
+                               Con_Printf("Missing altframe %i of %s\n", j, tx->name);
+                               incomplete = true;
                        }
-                       else
-                               Host_Error ("Bad animating texture %s", tx->name);
                }
-               
-#define        ANIM_CYCLE      2
-       // link them all together
-               for (j=0 ; j<max ; j++)
+               if (incomplete)
+                       continue;
+
+               if (altmax < 1)
+               {
+                       // if there is no alternate animation, duplicate the primary
+                       // animation into the alternate
+                       altmax = max;
+                       for (k = 0;k < 10;k++)
+                               altanims[k] = anims[k];
+               }
+
+               // link together the primary animation
+               for (j = 0;j < max;j++)
                {
                        tx2 = anims[j];
-                       if (!tx2)
-                               Host_Error ("Missing frame %i of %s",j, tx->name);
-                       tx2->anim_total = max * ANIM_CYCLE;
-                       tx2->anim_min = j * ANIM_CYCLE;
-                       tx2->anim_max = (j+1) * ANIM_CYCLE;
-                       tx2->anim_next = anims[ (j+1)%max ];
-                       if (altmax)
-                               tx2->alternate_anims = altanims[0];
+                       tx2->animated = true;
+                       tx2->anim_total[0] = max;
+                       tx2->anim_total[1] = altmax;
+                       for (k = 0;k < 10;k++)
+                       {
+                               tx2->anim_frames[0][k] = anims[k];
+                               tx2->anim_frames[1][k] = altanims[k];
+                       }
                }
-               for (j=0 ; j<altmax ; j++)
+
+               // if there really is an alternate anim...
+               if (anims[0] != altanims[0])
                {
-                       tx2 = altanims[j];
-                       if (!tx2)
-                               Host_Error ("Missing frame %i of %s",j, tx->name);
-                       tx2->anim_total = altmax * ANIM_CYCLE;
-                       tx2->anim_min = j * ANIM_CYCLE;
-                       tx2->anim_max = (j+1) * ANIM_CYCLE;
-                       tx2->anim_next = altanims[ (j+1)%altmax ];
-                       if (max)
-                               tx2->alternate_anims = anims[0];
+                       // link together the alternate animation
+                       for (j = 0;j < altmax;j++)
+                       {
+                               tx2 = altanims[j];
+                               tx2->animated = true;
+                               // the primary/alternate are reversed here
+                               tx2->anim_total[0] = altmax;
+                               tx2->anim_total[1] = max;
+                               for (k = 0;k < 10;k++)
+                               {
+                                       tx2->anim_frames[0][k] = altanims[k];
+                                       tx2->anim_frames[1][k] = anims[k];
+                               }
+                       }
                }
        }
 }
 
-/*
-=================
-Mod_LoadLighting
-=================
-*/
-void Mod_LoadLighting (lump_t *l)
+static void Mod_Q1BSP_LoadLighting(lump_t *l)
 {
        int i;
-       byte *in, *out, *data;
-       byte d;
+       qbyte *in, *out, *data, d;
        char litfilename[1024];
        loadmodel->lightdata = NULL;
-       if (hlbsp) // LordHavoc: load the colored lighting data straight
+       if (loadmodel->ishlbsp) // LordHavoc: load the colored lighting data straight
        {
-               loadmodel->lightdata = Hunk_AllocName ( l->filelen, va("%s lightmaps", loadname));
-               memcpy (loadmodel->lightdata, mod_base + l->fileofs, l->filelen);
+               loadmodel->lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
+               memcpy(loadmodel->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);
+               FS_StripExtension(litfilename, litfilename);
                strcat(litfilename, ".lit");
-               data = (byte*) COM_LoadHunkFile (litfilename, false);
+               data = (qbyte*) FS_LoadFile(litfilename, false);
                if (data)
                {
-                       if (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 = data + 8;
+                                       Con_DPrintf("loaded %s\n", litfilename);
+                                       loadmodel->lightdata = Mem_Alloc(loadmodel->mempool, fs_filesize - 8);
+                                       memcpy(loadmodel->lightdata, data + 8, fs_filesize - 8);
+                                       Mem_Free(data);
                                        return;
                                }
                                else
+                               {
                                        Con_Printf("Unknown .lit file version (%d)\n", i);
+                                       Mem_Free(data);
+                               }
                        }
                        else
-                               Con_Printf("Corrupt .lit file (old version?), ignoring\n");
+                       {
+                               if (fs_filesize == 8)
+                                       Con_Printf("Empty .lit file, ignoring\n");
+                               else
+                                       Con_Printf("Corrupt .lit file (old version?), ignoring\n");
+                               Mem_Free(data);
+                       }
                }
                // LordHavoc: oh well, expand the white lighting data
                if (!l->filelen)
                        return;
-               loadmodel->lightdata = Hunk_AllocName ( l->filelen*3, va("%s lightmaps", loadname));
+               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);
+               memcpy(in, mod_base + l->fileofs, l->filelen);
                for (i = 0;i < l->filelen;i++)
                {
                        d = *in++;
@@ -488,81 +658,430 @@ void Mod_LoadLighting (lump_t *l)
        }
 }
 
-
-/*
-=================
-Mod_LoadVisibility
-=================
-*/
-void Mod_LoadVisibility (lump_t *l)
+static void Mod_Q1BSP_LoadLightList(void)
 {
-       if (!l->filelen)
+       int a, n, numlights;
+       char lightsfilename[1024], *s, *t, *lightsstring;
+       mlight_t *e;
+
+       strcpy(lightsfilename, loadmodel->name);
+       FS_StripExtension(lightsfilename, lightsfilename);
+       strcat(lightsfilename, ".lights");
+       s = lightsstring = (char *) FS_LoadFile(lightsfilename, false);
+       if (s)
        {
-               loadmodel->visdata = NULL;
-               return;
+               numlights = 0;
+               while (*s)
+               {
+                       while (*s && *s != '\n')
+                               s++;
+                       if (!*s)
+                       {
+                               Mem_Free(lightsstring);
+                               Host_Error("lights file must end with a newline\n");
+                       }
+                       s++;
+                       numlights++;
+               }
+               loadmodel->lights = Mem_Alloc(loadmodel->mempool, numlights * sizeof(mlight_t));
+               s = lightsstring;
+               n = 0;
+               while (*s && n < numlights)
+               {
+                       t = s;
+                       while (*s && *s != '\n')
+                               s++;
+                       if (!*s)
+                       {
+                               Mem_Free(lightsstring);
+                               Host_Error("misparsed lights file!\n");
+                       }
+                       e = loadmodel->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';
+                       if (a != 14)
+                       {
+                               Mem_Free(lightsstring);
+                               Host_Error("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
+                       }
+                       s++;
+                       n++;
+               }
+               if (*s)
+               {
+                       Mem_Free(lightsstring);
+                       Host_Error("misparsed lights file!\n");
+               }
+               loadmodel->numlights = numlights;
+               Mem_Free(lightsstring);
        }
-       loadmodel->visdata = Hunk_AllocName ( l->filelen, va("%s visdata", loadname));
-       memcpy (loadmodel->visdata, mod_base + l->fileofs, l->filelen);
 }
 
-void CL_ParseEntityLump(char *entdata);
-
-extern qboolean isworldmodel;
-
 /*
-=================
-Mod_LoadEntities
-=================
-*/
-void Mod_LoadEntities (lump_t *l)
+static int castshadowcount = 0;
+static void Mod_Q1BSP_ProcessLightList(void)
 {
-       if (!l->filelen)
+       int j, k, l, *mark, lnum;
+       mlight_t *e;
+       msurface_t *surf;
+       float dist;
+       mleaf_t *leaf;
+       qbyte *pvs;
+       vec3_t temp;
+       float *v, radius2;
+       for (lnum = 0, e = loadmodel->lights;lnum < loadmodel->numlights;lnum++, e++)
        {
-               loadmodel->entities = NULL;
-               return;
-       }
-       loadmodel->entities = Hunk_AllocName ( l->filelen, va("%s entities", loadname));
-       memcpy (loadmodel->entities, mod_base + l->fileofs, l->filelen);
+               e->cullradius2 = DotProduct(e->light, e->light) / (e->falloff * e->falloff * 8192.0f * 8192.0f * 2.0f * 2.0f);// + 4096.0f;
+               if (e->cullradius2 > 4096.0f * 4096.0f)
+                       e->cullradius2 = 4096.0f * 4096.0f;
+               e->cullradius = e->lightradius = sqrt(e->cullradius2);
+               leaf = Mod_Q1BSP_PointInLeaf(e->origin, loadmodel);
+               if (leaf->compressed_vis)
+                       pvs = Mod_Q1BSP_DecompressVis(leaf->compressed_vis, loadmodel);
+               else
+                       pvs = mod_q1bsp_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++)
+               {
+                       if (pvs[j >> 3] & (1 << (j & 7)))
+                       {
+                               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)
+                                       {
+                                               temp[0] = bound(surf->poly_mins[0], e->origin[0], surf->poly_maxs[0]) - e->origin[0];
+                                               temp[1] = bound(surf->poly_mins[1], e->origin[1], surf->poly_maxs[1]) - e->origin[1];
+                                               temp[2] = bound(surf->poly_mins[2], e->origin[2], surf->poly_maxs[2]) - e->origin[2];
+                                               if (DotProduct(temp, temp) < lightradius2)
+                                                       loadmodel->surfacevisframes[*mark] = -2;
+                                       }
+                               }
+                       }
+               }
+               // 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;
+               }
+               // find bounding box and sphere of lit surfaces
+               // (these will be used for creating a shape to clip the light)
+               radius2 = 0;
+               for (j = 0;j < e->numsurfaces;j++)
+               {
+                       surf = e->surfaces[j];
+                       if (j == 0)
+                       {
+                               VectorCopy(surf->poly_verts, e->mins);
+                               VectorCopy(surf->poly_verts, e->maxs);
+                       }
+                       for (k = 0, v = surf->poly_verts;k < surf->poly_numverts;k++, v += 3)
+                       {
+                               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;
+                       }
+               }
+               if (e->cullradius2 > radius2)
+               {
+                       e->cullradius2 = radius2;
+                       e->cullradius = sqrt(e->cullradius2);
+               }
+               if (e->mins[0] < e->origin[0] - e->lightradius) e->mins[0] = e->origin[0] - e->lightradius;
+               if (e->maxs[0] > e->origin[0] + e->lightradius) e->maxs[0] = e->origin[0] + e->lightradius;
+               if (e->mins[1] < e->origin[1] - e->lightradius) e->mins[1] = e->origin[1] - e->lightradius;
+               if (e->maxs[1] > e->origin[1] + e->lightradius) e->maxs[1] = e->origin[1] + e->lightradius;
+               if (e->mins[2] < e->origin[2] - e->lightradius) e->mins[2] = e->origin[2] - e->lightradius;
+               if (e->maxs[2] > e->origin[2] + e->lightradius) e->maxs[2] = e->origin[2] + e->lightradius;
+               // clip shadow volumes against eachother to remove unnecessary
+               // polygons(and sections of polygons)
+               {
+                       //vec3_t polymins, polymaxs;
+                       int maxverts = 4;
+                       float *verts = Mem_Alloc(loadmodel->mempool, maxverts * sizeof(float[3]));
+                       float f, *v0, *v1, projectdistance;
 
-       if (isworldmodel)
-               CL_ParseEntityLump(loadmodel->entities);
+                       e->shadowvolume = Mod_ShadowMesh_Begin(loadmodel->mempool, 1024);
+#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
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       // X minor
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       // Y major
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       // Y minor
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       // Z major
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       // Z minor
+                       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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                       }
+#endif
+                       castshadowcount++;
+                       for (j = 0;j < e->numsurfaces;j++)
+                       {
+                               surf = e->surfaces[j];
+                               if (surf->flags & SURF_SHADOWCAST)
+                                       surf->castshadow = castshadowcount;
+                       }
+                       for (j = 0;j < e->numsurfaces;j++)
+                       {
+                               surf = e->surfaces[j];
+                               if (surf->castshadow != castshadowcount)
+                                       continue;
+                               f = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
+                               if (surf->flags & SURF_PLANEBACK)
+                                       f = -f;
+                               projectdistance = e->lightradius;
+                               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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, surf->poly_numverts, verts);
+                               // project the shadow volume sides
+                               for (l = surf->poly_numverts - 1, k = 0, v0 = surf->poly_verts + (surf->poly_numverts - 1) * 3, v1 = surf->poly_verts;k < surf->poly_numverts;l = k, k++, v0 = v1, v1 += 3)
+                               {
+                                       if (!surf->neighborsurfaces[l] || surf->neighborsurfaces[l]->castshadow != castshadowcount)
+                                       {
+                                               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_ShadowMesh_AddPolygon(loadmodel->mempool, e->shadowvolume, 4, verts);
+                                       }
+                               }
+                       }
+                       // build the triangle mesh
+                       e->shadowvolume = Mod_ShadowMesh_Finish(loadmodel->mempool, e->shadowvolume);
+                       {
+                               shadowmesh_t *mesh;
+                               l = 0;
+                               for (mesh = e->shadowvolume;mesh;mesh = mesh->next)
+                                       l += mesh->numtriangles;
+                               Con_Printf("light %i shadow volume built containing %i triangles\n", lnum, l);
+                       }
+               }
+       }
 }
+*/
 
 
-/*
-=================
-Mod_LoadVertexes
-=================
-*/
-void Mod_LoadVertexes (lump_t *l)
+static void Mod_Q1BSP_LoadVisibility(lump_t *l)
 {
-       dvertex_t       *in;
+       loadmodel->visdata = NULL;
+       if (!l->filelen)
+               return;
+       loadmodel->visdata = Mem_Alloc(loadmodel->mempool, l->filelen);
+       memcpy(loadmodel->visdata, mod_base + l->fileofs, l->filelen);
+}
+
+// used only for HalfLife maps
+static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
+{
+       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)
+       {
+               if (!COM_ParseToken(&data))
+                       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))
+                       return; // error
+               strcpy(value, com_token);
+               if (!strcmp("wad", key)) // for HalfLife maps
+               {
+                       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;
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+}
+
+static void Mod_Q1BSP_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_Q1BSP_ParseWadsFromEntityLump(loadmodel->entities);
+}
+
+
+static void Mod_Q1BSP_LoadVertexes(lump_t *l)
+{
+       dvertex_t       *in;
        mvertex_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_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s vertices", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->vertexes = out;
        loadmodel->numvertexes = count;
 
        for ( i=0 ; i<count ; i++, in++, out++)
        {
-               out->position[0] = LittleFloat (in->point[0]);
-               out->position[1] = LittleFloat (in->point[1]);
-               out->position[2] = LittleFloat (in->point[2]);
+               out->position[0] = LittleFloat(in->point[0]);
+               out->position[1] = LittleFloat(in->point[1]);
+               out->position[2] = LittleFloat(in->point[2]);
        }
 }
 
-/*
-=================
-Mod_LoadSubmodels
-=================
-*/
-void Mod_LoadSubmodels (lump_t *l)
+static void Mod_Q1BSP_LoadSubmodels(lump_t *l)
 {
        dmodel_t        *in;
        dmodel_t        *out;
@@ -570,9 +1089,9 @@ void Mod_LoadSubmodels (lump_t *l)
 
        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_LoadSubmodels: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s submodels", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->submodels = out;
        loadmodel->numsubmodels = count;
@@ -580,25 +1099,21 @@ void Mod_LoadSubmodels (lump_t *l)
        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]);
+               {
+                       // 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]);
                }
                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);
+                       out->headnode[j] = LittleLong(in->headnode[j]);
+               out->visleafs = LittleLong(in->visleafs);
+               out->firstface = LittleLong(in->firstface);
+               out->numfaces = LittleLong(in->numfaces);
        }
 }
 
-/*
-=================
-Mod_LoadEdges
-=================
-*/
-void Mod_LoadEdges (lump_t *l)
+static void Mod_Q1BSP_LoadEdges(lump_t *l)
 {
        dedge_t *in;
        medge_t *out;
@@ -606,9 +1121,9 @@ void Mod_LoadEdges (lump_t *l)
 
        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_LoadEdges: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( (count + 1) * sizeof(*out), va("%s edges", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->edges = out;
        loadmodel->numedges = count;
@@ -620,239 +1135,455 @@ void Mod_LoadEdges (lump_t *l)
        }
 }
 
-/*
-=================
-Mod_LoadTexinfo
-=================
-*/
-void Mod_LoadTexinfo (lump_t *l)
+static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
 {
        texinfo_t *in;
        mtexinfo_t *out;
-       int     i, j, k, count;
-       int             miptex;
-       float   len1, len2;
+       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);
+               Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s texinfo", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
        loadmodel->texinfo = out;
        loadmodel->numtexinfo = count;
 
-       for ( i=0 ; i<count ; i++, in++, out++)
+       for (i = 0;i < count;i++, in++, out++)
        {
-               for (k=0 ; k<2 ; k++)
-                       for (j=0 ; j<4 ; j++)
-                               out->vecs[k][j] = LittleFloat (in->vecs[k][j]);
-               len1 = Length (out->vecs[0]);
-               len2 = Length (out->vecs[1]);
-               len1 = (len1 + len2)/2;
-               if (len1 < 0.32)
-                       out->mipadjust = 4;
-               else if (len1 < 0.49)
-                       out->mipadjust = 3;
-               else if (len1 < 0.99)
-                       out->mipadjust = 2;
-               else
-                       out->mipadjust = 1;
-#if 0
-               if (len1 + len2 < 0.001)
-                       out->mipadjust = 1;             // don't crash
-               else
-                       out->mipadjust = 1 / floor( (len1+len2)/2 + 0.1 );
-#endif
+               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);
-       
-               if (!loadmodel->textures)
+               miptex = LittleLong(in->miptex);
+               out->flags = LittleLong(in->flags);
+
+               out->texture = NULL;
+               if (loadmodel->textures)
+               {
+                       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;
+               }
+               if (out->flags & TEX_SPECIAL)
                {
-                       out->texture = r_notexture_mip; // checkerboard texture
-                       out->flags = 0;
-                       out->texture->transparent = false;
+                       // 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);
                }
                else
                {
-                       if (miptex >= loadmodel->numtextures)
-                               Host_Error ("miptex >= loadmodel->numtextures");
-                       out->texture = loadmodel->textures[miptex];
-                       if (!out->texture)
-                       {
-                               out->texture = r_notexture_mip; // texture not found
-                               out->flags = 0;
-                               out->texture->transparent = false;
-                       }
+                       // if texture chosen is NULL, force to notexture
+                       if (out->texture == NULL)
+                               out->texture = loadmodel->textures + (loadmodel->numtextures - 2);
                }
        }
 }
 
-/*
-================
-CalcSurfaceExtents
+void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
+{
+       int             i, j;
+       float   *v;
 
-Fills in s->texturemins[] and s->extents[]
-================
-*/
-void CalcSurfaceExtents (msurface_t *s)
+       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 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)
+{
+       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++;
+}
+
+static void SubdividePolygon(int numverts, float *verts)
 {
-       float   mins[2], maxs[2], val;
-       int             i,j, e;
-       mvertex_t       *v;
-       mtexinfo_t      *tex;
-       int             bmins[2], bmaxs[2];
+       int             i, i1, i2, i3, f, b, c, p;
+       vec3_t  mins, maxs, front[256], back[256];
+       float   m, *pv, *cv, dist[256], frac;
 
-       mins[0] = mins[1] = 999999;
-       maxs[0] = maxs[1] = -99999;
+       if (numverts > 250)
+               Host_Error("SubdividePolygon: ran out of verts in buffer");
 
-       tex = s->texinfo;
-       
-       for (i=0 ; i<s->numedges ; i++)
+       BoundPoly(numverts, verts, mins, maxs);
+
+       for (i = 0;i < 3;i++)
        {
-               e = loadmodel->surfedges[s->firstedge+i];
-               if (e >= 0)
-                       v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
-               else
-                       v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
-               
-               for (j=0 ; j<2 ; j++)
+               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)
                {
-                       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;
+                       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;
        }
 
-       for (i=0 ; i<2 ; i++)
-       {       
-               bmins[i] = floor(mins[i]/16);
-               bmaxs[i] = ceil(maxs[i]/16);
+       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;
+               }
 
-               s->texturemins[i] = bmins[i] * 16;
-               s->extents[i] = (bmaxs[i] - bmins[i]) * 16;
-//             if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 512)
-               if ((tex->flags & TEX_SPECIAL) == 0 && (s->extents[i]+1) > (256*16))
-                       Host_Error ("Bad surface extents");
+               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;
+
+       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->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));
+
+       for (i = 0;i < mesh->numtriangles;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
 
-void GL_SubdivideSurface (msurface_t *fa);
+static surfmesh_t *Mod_Q1BSP_AllocSurfMesh(int numverts, int numtriangles)
+{
+       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->numverts = numverts;
+       mesh->numtriangles = numtriangles;
+       mesh->vertex3f = (float *)(mesh + 1);
+       mesh->texcoordtexture2f = mesh->vertex3f + mesh->numverts * 3;
+       mesh->texcoordlightmap2f = mesh->texcoordtexture2f + mesh->numverts * 2;
+       mesh->texcoorddetail2f = mesh->texcoordlightmap2f + mesh->numverts * 2;
+       mesh->svector3f = (float *)(mesh->texcoorddetail2f + mesh->numverts * 2);
+       mesh->tvector3f = mesh->svector3f + mesh->numverts * 3;
+       mesh->normal3f = mesh->tvector3f + mesh->numverts * 3;
+       mesh->lightmapoffsets = (int *)(mesh->normal3f + mesh->numverts * 3);
+       mesh->element3i = mesh->lightmapoffsets + mesh->numverts;
+       mesh->neighbor3i = mesh->element3i + mesh->numtriangles * 3;
+       return mesh;
+}
 
-extern char skyname[];
+static void Mod_Q1BSP_GenerateSurfacePolygon(msurface_t *surf, int firstedge, int numedges)
+{
+       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++)
+       {
+               lindex = loadmodel->surfedges[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;
+       }
 
-/*
-=================
-Mod_LoadFaces
-=================
-*/
-void Mod_LoadFaces (lump_t *l)
+       // 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++)
+               {
+                       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];
+       }
+}
+
+static void Mod_Q1BSP_LoadFaces(lump_t *l)
 {
-       dface_t         *in;
-       msurface_t      *out;
-       int                     i, count, surfnum;
-       int                     planenum, side;
+       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 = Hunk_AllocName ( count*sizeof(*out), va("%s faces", loadname));
+       loadmodel->surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
 
-       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->pvssurflist = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
 
-       for ( surfnum=0 ; surfnum<count ; surfnum++, in++, out++)
+       for (surfnum = 0, surf = loadmodel->surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, in++, surf++)
        {
-               out->firstedge = LittleLong(in->firstedge);
-               out->numedges = LittleShort(in->numedges);              
-               out->flags = 0;
+               surf->number = surfnum;
+               // FIXME: validate edges, texinfo, etc?
+               firstedge = LittleLong(in->firstedge);
+               numedges = LittleShort(in->numedges);
+               if ((unsigned int) firstedge > (unsigned int) loadmodel->numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->numsurfedges)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)\n", firstedge, numedges, loadmodel->numsurfedges);
+               i = LittleShort(in->texinfo);
+               if ((unsigned int) i >= (unsigned int) loadmodel->numtexinfo)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)\n", i, loadmodel->numtexinfo);
+               surf->texinfo = loadmodel->texinfo + i;
+               surf->flags = surf->texinfo->texture->flags;
 
                planenum = LittleShort(in->planenum);
-               side = LittleShort(in->side);
-               if (side)
-                       out->flags |= SURF_PLANEBACK;                   
+               if ((unsigned int) planenum >= (unsigned int) loadmodel->numplanes)
+                       Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->numplanes);
 
-               out->plane = loadmodel->planes + planenum;
+               if (LittleShort(in->side))
+                       surf->flags |= SURF_PLANEBACK;
 
-               out->texinfo = loadmodel->texinfo + LittleShort (in->texinfo);
+               surf->plane = loadmodel->planes + planenum;
 
-               CalcSurfaceExtents (out);
-                               
-       // lighting info
+               // clear lightmap (filled in later)
+               surf->lightmaptexture = NULL;
 
-               for (i=0 ; i<MAXLIGHTMAPS ; i++)
-                       out->styles[i] = in->styles[i];
+               // 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)
-                       out->samples = NULL;
-               else if (hlbsp) // LordHavoc: HalfLife map (bsp version 30)
-                       out->samples = loadmodel->lightdata + i;
+                       surf->samples = NULL;
+               else if (loadmodel->ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
+                       surf->samples = loadmodel->lightdata + i;
                else // LordHavoc: white lighting (bsp version 29)
-                       out->samples = loadmodel->lightdata + (i * 3); 
-               
-       // set the drawing flags flag
-               
-//             if (!strncmp(out->texinfo->texture->name,"sky",3))      // sky
-               // LordHavoc: faster check
-               if ((out->texinfo->texture->name[0] == 's' || out->texinfo->texture->name[0] == 'S')
-                && (out->texinfo->texture->name[1] == 'k' || out->texinfo->texture->name[1] == 'K')
-                && (out->texinfo->texture->name[2] == 'y' || out->texinfo->texture->name[2] == 'Y'))
-               {
-                       // LordHavoc: for consistency reasons, mark sky as fullbright and solid as well
-                       out->flags |= (SURF_DRAWSKY | SURF_DRAWTILED | SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA);
-                       GL_SubdivideSurface (out);      // cut up polygon for warps
-                       continue;
+                       surf->samples = loadmodel->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->entiremesh = Mod_Q1BSP_AllocSurfMesh(totalverts, totaltris);
+       loadmodel->surfmeshes = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) * totalmeshes);
+
+       for (surfnum = 0, surf = loadmodel->surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, surf++)
+       {
+               mesh = surf->mesh = loadmodel->surfmeshes + totalmeshes;
+               mesh->numverts = surf->poly_numverts;
+               mesh->numtriangles = surf->poly_numverts - 2;
+               mesh->vertex3f = loadmodel->entiremesh->vertex3f + totalverts * 3;
+               mesh->texcoordtexture2f = loadmodel->entiremesh->texcoordtexture2f + totalverts * 2;
+               mesh->texcoordlightmap2f = loadmodel->entiremesh->texcoordlightmap2f + totalverts * 2;
+               mesh->texcoorddetail2f = loadmodel->entiremesh->texcoorddetail2f + totalverts * 2;
+               mesh->svector3f = loadmodel->entiremesh->svector3f + totalverts * 3;
+               mesh->tvector3f = loadmodel->entiremesh->tvector3f + totalverts * 3;
+               mesh->normal3f = loadmodel->entiremesh->normal3f + totalverts * 3;
+               mesh->lightmapoffsets = loadmodel->entiremesh->lightmapoffsets + totalverts;
+               mesh->element3i = loadmodel->entiremesh->element3i + totaltris * 3;
+               mesh->neighbor3i = loadmodel->entiremesh->neighbor3i + totaltris * 3;
+
+               surf->lightmaptexturestride = 0;
+               surf->lightmaptexture = NULL;
+
+               for (i = 0;i < mesh->numverts;i++)
+               {
+                       mesh->vertex3f[i * 3 + 0] = surf->poly_verts[i * 3 + 0];
+                       mesh->vertex3f[i * 3 + 1] = surf->poly_verts[i * 3 + 1];
+                       mesh->vertex3f[i * 3 + 2] = surf->poly_verts[i * 3 + 2];
+                       s = DotProduct((mesh->vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
+                       t = DotProduct((mesh->vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
+                       mesh->texcoordtexture2f[i * 2 + 0] = s / surf->texinfo->texture->width;
+                       mesh->texcoordtexture2f[i * 2 + 1] = t / surf->texinfo->texture->height;
+                       mesh->texcoorddetail2f[i * 2 + 0] = s * (1.0f / 16.0f);
+                       mesh->texcoorddetail2f[i * 2 + 1] = t * (1.0f / 16.0f);
+                       mesh->texcoordlightmap2f[i * 2 + 0] = 0;
+                       mesh->texcoordlightmap2f[i * 2 + 1] = 0;
+                       mesh->lightmapoffsets[i] = 0;
                }
-               
-//             if (!strncmp(out->texinfo->texture->name,"*",1))                // turbulent
-               if (out->texinfo->texture->name[0] == '*') // LordHavoc: faster check
+
+               for (i = 0;i < mesh->numtriangles;i++)
                {
-                       out->flags |= (SURF_DRAWTURB | SURF_DRAWTILED | SURF_LIGHTBOTHSIDES);
-                       // LordHavoc: some turbulent textures should be fullbright and solid
-                       if (!strncmp(out->texinfo->texture->name,"*lava",5)
-                        || !strncmp(out->texinfo->texture->name,"*teleport",9)
-                        || !strncmp(out->texinfo->texture->name,"*rift",5)) // Scourge of Armagon texture
-                               out->flags |= (SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA);
-                       for (i=0 ; i<2 ; i++)
+                       mesh->element3i[i * 3 + 0] = 0;
+                       mesh->element3i[i * 3 + 1] = i + 1;
+                       mesh->element3i[i * 3 + 2] = i + 2;
+               }
+
+               Mod_BuildTriangleNeighbors(mesh->neighbor3i, mesh->element3i, mesh->numtriangles);
+               Mod_BuildTextureVectorsAndNormals(mesh->numverts, mesh->numtriangles, mesh->vertex3f, mesh->texcoordtexture2f, mesh->element3i, mesh->svector3f, mesh->tvector3f, mesh->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)
                        {
-                               out->extents[i] = 16384;
-                               out->texturemins[i] = -8192;
+                               surf->lightmaptexturestride = smax+1;
+                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
                        }
-                       GL_SubdivideSurface (out);      // cut up polygon for warps
-                       continue;
-               }
+                       else
+                       {
+                               surf->lightmaptexturestride = R_CompatibleFragmentWidth(smax+1, loadmodel->lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
+                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->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->numverts;i++)
+                       {
+                               u = ((DotProduct((mesh->vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) + 8 - surf->texturemins[0]) * (1.0 / 16.0);
+                               v = ((DotProduct((mesh->vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) + 8 - surf->texturemins[1]) * (1.0 / 16.0);
+                               mesh->texcoordlightmap2f[i * 2 + 0] = u * uscale + ubase;
+                               mesh->texcoordlightmap2f[i * 2 + 1] = v * vscale + vbase;
+                               // LordHavoc: calc lightmap data offset for vertex lighting to use
+                               iu = (int) u;
+                               iv = (int) v;
+                               mesh->lightmapoffsets[i] = (bound(0, iv, tmax) * (smax+1) + bound(0, iu, smax)) * 3;
+                       }
+               }
        }
 }
 
-
-/*
-=================
-Mod_SetParent
-=================
-*/
-void Mod_SetParent (mnode_t *node, mnode_t *parent)
+static void Mod_Q1BSP_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_Q1BSP_SetParent(node->children[0], node);
+       Mod_Q1BSP_SetParent(node->children[1], node);
 }
 
-/*
-=================
-Mod_LoadNodes
-=================
-*/
-void Mod_LoadNodes (lump_t *l)
+static void Mod_Q1BSP_LoadNodes(lump_t *l)
 {
        int                     i, j, count, p;
        dnode_t         *in;
@@ -860,9 +1591,9 @@ void Mod_LoadNodes (lump_t *l)
 
        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 = Hunk_AllocName ( count*sizeof(*out), va("%s nodes", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->nodes = out;
        loadmodel->numnodes = count;
@@ -871,35 +1602,30 @@ void Mod_LoadNodes (lump_t *l)
        {
                for (j=0 ; j<3 ; j++)
                {
-                       out->minmaxs[j] = LittleShort (in->mins[j]);
-                       out->minmaxs[3+j] = LittleShort (in->maxs[j]);
+                       out->mins[j] = LittleShort(in->mins[j]);
+                       out->maxs[j] = LittleShort(in->maxs[j]);
                }
-       
+
                p = LittleLong(in->planenum);
                out->plane = loadmodel->planes + p;
 
-               out->firstsurface = LittleShort (in->firstface);
-               out->numsurfaces = LittleShort (in->numfaces);
-               
+               out->firstsurface = LittleShort(in->firstface);
+               out->numsurfaces = LittleShort(in->numfaces);
+
                for (j=0 ; j<2 ; j++)
                {
-                       p = LittleShort (in->children[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));
                }
        }
-       
-       Mod_SetParent (loadmodel->nodes, NULL); // sets nodes and leafs
+
+       Mod_Q1BSP_SetParent(loadmodel->nodes, NULL);    // sets nodes and leafs
 }
 
-/*
-=================
-Mod_LoadLeafs
-=================
-*/
-void Mod_LoadLeafs (lump_t *l)
+static void Mod_Q1BSP_LoadLeafs(lump_t *l)
 {
        dleaf_t         *in;
        mleaf_t         *out;
@@ -907,9 +1633,9 @@ void Mod_LoadLeafs (lump_t *l)
 
        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_LoadLeafs: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s leafs", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->leafs = out;
        loadmodel->numleafs = count;
@@ -918,8 +1644,8 @@ void Mod_LoadLeafs (lump_t *l)
        {
                for (j=0 ; j<3 ; j++)
                {
-                       out->minmaxs[j] = LittleShort (in->mins[j]);
-                       out->minmaxs[3+j] = LittleShort (in->maxs[j]);
+                       out->mins[j] = LittleShort(in->mins[j]);
+                       out->maxs[j] = LittleShort(in->maxs[j]);
                }
 
                p = LittleLong(in->contents);
@@ -928,35 +1654,21 @@ void Mod_LoadLeafs (lump_t *l)
                out->firstmarksurface = loadmodel->marksurfaces +
                        LittleShort(in->firstmarksurface);
                out->nummarksurfaces = LittleShort(in->nummarksurfaces);
-               
+
                p = LittleLong(in->visofs);
                if (p == -1)
                        out->compressed_vis = NULL;
                else
                        out->compressed_vis = loadmodel->visdata + p;
-               out->efrags = NULL;
-               
+
                for (j=0 ; j<4 ; j++)
                        out->ambient_sound_level[j] = in->ambient_level[j];
 
-               // gl underwater warp
-               // LordHavoc: disabled underwater warping
-               /*
-               if (out->contents != CONTENTS_EMPTY)
-               {
-                       for (j=0 ; j<out->nummarksurfaces ; j++)
-                               out->firstmarksurface[j]->flags |= SURF_UNDERWATER;
-               }
-               */
-       }       
+               // FIXME: Insert caustics here
+       }
 }
 
-/*
-=================
-Mod_LoadClipnodes
-=================
-*/
-void Mod_LoadClipnodes (lump_t *l)
+static void Mod_Q1BSP_LoadClipnodes(lump_t *l)
 {
        dclipnode_t *in, *out;
        int                     i, count;
@@ -964,14 +1676,14 @@ void Mod_LoadClipnodes (lump_t *l)
 
        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_LoadClipnodes: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s clipnodes", loadname));
+       out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
        loadmodel->clipnodes = out;
        loadmodel->numclipnodes = count;
 
-       if (hlbsp)
+       if (loadmodel->ishlbsp)
        {
                hull = &loadmodel->hulls[1];
                hull->clipnodes = out;
@@ -984,6 +1696,7 @@ void Mod_LoadClipnodes (lump_t *l)
                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;
@@ -996,6 +1709,7 @@ void Mod_LoadClipnodes (lump_t *l)
                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->hulls[3];
                hull->clipnodes = out;
@@ -1008,6 +1722,7 @@ void Mod_LoadClipnodes (lump_t *l)
                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
        {
@@ -1022,6 +1737,7 @@ void Mod_LoadClipnodes (lump_t *l)
                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->hulls[2];
                hull->clipnodes = out;
@@ -1034,6 +1750,7 @@ void Mod_LoadClipnodes (lump_t *l)
                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++)
@@ -1042,226 +1759,1525 @@ void Mod_LoadClipnodes (lump_t *l)
                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");
+                       Host_Error("Corrupt clipping hull(out of range child)\n");
        }
 }
 
-/*
-=================
-Mod_MakeHull0
-
-Duplicate the drawing hull structure as a clipping hull
-=================
-*/
-void Mod_MakeHull0 (void)
+//Duplicate the drawing hull structure as a clipping hull
+static void Mod_Q1BSP_MakeHull0(void)
 {
-       mnode_t         *in, *child;
+       mnode_t         *in;
        dclipnode_t *out;
-       int                     i, j, count;
+       int                     i;
        hull_t          *hull;
-       
-       hull = &loadmodel->hulls[0];    
-       
+
+       hull = &loadmodel->hulls[0];
+
        in = loadmodel->nodes;
-       count = loadmodel->numnodes;
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s hull0", loadname));
+       out = Mem_Alloc(loadmodel->mempool, loadmodel->numnodes * sizeof(dclipnode_t));
 
        hull->clipnodes = out;
        hull->firstclipnode = 0;
-       hull->lastclipnode = count-1;
+       hull->lastclipnode = loadmodel->numnodes - 1;
        hull->planes = loadmodel->planes;
 
-       for (i=0 ; i<count ; i++, out++, in++)
+       for (i = 0;i < loadmodel->numnodes;i++, out++, in++)
        {
                out->planenum = in->plane - loadmodel->planes;
-               for (j=0 ; j<2 ; j++)
-               {
-                       child = in->children[j];
-                       if (child->contents < 0)
-                               out->children[j] = child->contents;
-                       else
-                               out->children[j] = child - loadmodel->nodes;
-               }
+               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
-=================
-*/
-void Mod_LoadMarksurfaces (lump_t *l)
-{      
-       int             i, j, count;
-       short           *in;
-       msurface_t **out;
-       
+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_LoadBmodel: funny lump size in %s",loadmodel->name);
-       count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s marksurfaces", loadname));
-
-       loadmodel->marksurfaces = out;
-       loadmodel->nummarksurfaces = count;
+               Host_Error("Mod_Q1BSP_LoadMarksurfaces: funny lump size in %s",loadmodel->name);
+       loadmodel->nummarksurfaces = l->filelen / sizeof(*in);
+       loadmodel->marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummarksurfaces * sizeof(int));
 
-       for ( i=0 ; i<count ; i++)
+       for (i = 0;i < loadmodel->nummarksurfaces;i++)
        {
-               j = LittleShort(in[i]);
+               j = (unsigned) LittleShort(in[i]);
                if (j >= loadmodel->numsurfaces)
-                       Host_Error ("Mod_ParseMarksurfaces: bad surface number");
-               out[i] = loadmodel->surfaces + j;
+                       Host_Error("Mod_Q1BSP_LoadMarksurfaces: bad surface number");
+               loadmodel->marksurfaces[i] = j;
        }
 }
 
-/*
-=================
-Mod_LoadSurfedges
-=================
-*/
-void Mod_LoadSurfedges (lump_t *l)
-{      
-       int             i, count;
-       int             *in, *out;
-       
+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_LoadBmodel: funny lump size in %s",loadmodel->name);
-       count = l->filelen / sizeof(*in);
-       out = Hunk_AllocName ( count*sizeof(*out), va("%s surfedges", loadname));
-
-       loadmodel->surfedges = out;
-       loadmodel->numsurfedges = count;
+               Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
+       loadmodel->numsurfedges = l->filelen / sizeof(*in);
+       loadmodel->surfedges = Mem_Alloc(loadmodel->mempool, loadmodel->numsurfedges * sizeof(int));
 
-       for ( i=0 ; i<count ; i++)
-               out[i] = LittleLong (in[i]);
+       for (i = 0;i < loadmodel->numsurfedges;i++)
+               loadmodel->surfedges[i] = LittleLong(in[i]);
 }
 
 
-/*
-=================
-Mod_LoadPlanes
-=================
-*/
-void Mod_LoadPlanes (lump_t *l)
+static void Mod_Q1BSP_LoadPlanes(lump_t *l)
 {
-       int                     i, j;
+       int                     i;
        mplane_t        *out;
        dplane_t        *in;
-       int                     count;
-       int                     bits;
-       
+
        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 = Hunk_AllocName ( count*2*sizeof(*out), va("%s planes", loadname));
+               Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
 
-       loadmodel->planes = out;
-       loadmodel->numplanes = count;
+       loadmodel->numplanes = l->filelen / sizeof(*in);
+       loadmodel->planes = out = Mem_Alloc(loadmodel->mempool, loadmodel->numplanes * sizeof(*out));
 
-       for ( i=0 ; i<count ; i++, in++, out++)
+       for (i = 0;i < loadmodel->numplanes;i++, in++, out++)
        {
-               bits = 0;
-               for (j=0 ; j<3 ; j++)
-               {
-                       out->normal[j] = LittleFloat (in->normal[j]);
-//                     if (out->normal[j] < 0)
-//                             bits |= 1<<j;
-               }
+               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);
 
-               out->dist = LittleFloat (in->dist);
-               out->type = LittleLong (in->type);
-//             out->signbits = bits;
-               BoxOnPlaneSideClassify(out);
+               PlaneClassify(out);
        }
 }
 
+#define MAX_POINTS_ON_WINDING 64
+
+typedef struct
+{
+       int numpoints;
+       int padding;
+       double points[8][3]; // variable sized
+}
+winding_t;
+
+/*
+==================
+NewWinding
+==================
+*/
+static winding_t *NewWinding(int points)
+{
+       winding_t *w;
+       int size;
+
+       if (points > MAX_POINTS_ON_WINDING)
+               Sys_Error("NewWinding: too many points\n");
+
+       size = sizeof(winding_t) + sizeof(double[3]) * (points - 8);
+       w = Mem_Alloc(loadmodel->mempool, size);
+       memset(w, 0, size);
+
+       return w;
+}
+
+static void FreeWinding(winding_t *w)
+{
+       Mem_Free(w);
+}
+
 /*
 =================
-Mod_LoadBrushModel
+BaseWindingForPlane
 =================
 */
-void Mod_LoadBrushModel (model_t *mod, void *buffer)
-{
-       int                     i, j;
-       dheader_t       *header;
-       dmodel_t        *bm;
-       
-       loadmodel->type = mod_brush;
-       
-       header = (dheader_t *)buffer;
+static winding_t *BaseWindingForPlane(mplane_t *p)
+{
+       double org[3], vright[3], vup[3], normal[3];
+       winding_t *w;
 
-       i = LittleLong (header->version);
-       if (i != BSPVERSION && i != 30)
-               Host_Error ("Mod_LoadBrushModel: %s has wrong version number (%i should be %i or 30 (HalfLife))", mod->name, i, BSPVERSION);
-       hlbsp = i == 30;
-       halflifebsp.value = hlbsp;
+       VectorCopy(p->normal, normal);
+       VectorVectorsDouble(normal, vright, vup);
 
-// swap all the lumps
-       mod_base = (byte *)header;
+       VectorScale(vup, 1024.0*1024.0*1024.0, vup);
+       VectorScale(vright, 1024.0*1024.0*1024.0, vright);
 
-       for (i=0 ; i<sizeof(dheader_t)/4 ; i++)
-               ((int *)header)[i] = LittleLong ( ((int *)header)[i]);
+       // project a really big axis aligned box onto the plane
+       w = NewWinding(4);
 
-// load into heap
-       
-       // LordHavoc: had to move entity loading above everything to allow parsing various settings from worldspawn
-       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_LoadEntities (&header->lumps[LUMP_ENTITIES]);
-       Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
-
-       Mod_MakeHull0 ();
-       
-       mod->numframes = 2;             // regular and alternate animation
-       
-//
-// set up the submodels (FIXME: this is confusing)
-//
-       for (i=0 ; i<mod->numsubmodels ; i++)
-       {
-               bm = &mod->submodels[i];
+       VectorScale(p->normal, p->dist, org);
 
-               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;
-               }
-               
-               mod->firstmodelsurface = bm->firstface;
-               mod->nummodelsurfaces = bm->numfaces;
-               
-               VectorCopy (bm->maxs, mod->maxs);
-               VectorCopy (bm->mins, mod->mins);
+       VectorSubtract(org, vright, w->points[0]);
+       VectorAdd(w->points[0], vup, w->points[0]);
 
-               mod->radius = RadiusFromBounds (mod->mins, mod->maxs);
+       VectorAdd(org, vright, w->points[1]);
+       VectorAdd(w->points[1], vup, w->points[1]);
 
-               mod->numleafs = bm->visleafs;
+       VectorAdd(org, vright, w->points[2]);
+       VectorSubtract(w->points[2], vup, w->points[2]);
 
-               if (isworldmodel && i < (mod->numsubmodels-1)) // LordHavoc: only register submodels if it is the world (prevents bsp models from replacing world submodels)
-               {       // duplicate the basic information
-                       char    name[10];
+       VectorSubtract(org, vright, w->points[3]);
+       VectorSubtract(w->points[3], vup, w->points[3]);
 
-                       sprintf (name, "*%i", i+1);
-                       loadmodel = Mod_FindName (name);
-                       *loadmodel = *mod;
-                       strcpy (loadmodel->name, name);
-                       mod = loadmodel;
-               }
-       }
+       w->numpoints = 4;
+
+       return w;
 }
+
+/*
+==================
+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)
+{
+       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;
+
+       counts[SIDE_FRONT] = counts[SIDE_BACK] = counts[SIDE_ON] = 0;
+
+       // determine sides for each point
+       for (i = 0;i < in->numpoints;i++)
+       {
+               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]]++;
+       }
+       sides[i] = sides[0];
+       dists[i] = dists[0];
+
+       if (keepon && !counts[0] && !counts[1])
+               return in;
+
+       if (!counts[0])
+       {
+               FreeWinding(in);
+               return NULL;
+       }
+       if (!counts[1])
+               return in;
+
+       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");
+
+       neww = NewWinding(maxpts);
+
+       for (i = 0;i < in->numpoints;i++)
+       {
+               if (neww->numpoints >= maxpts)
+                       Sys_Error("ClipWinding: points exceeded estimate");
+
+               p1 = in->points[i];
+
+               if (sides[i] == SIDE_ON)
+               {
+                       VectorCopy(p1, neww->points[neww->numpoints]);
+                       neww->numpoints++;
+                       continue;
+               }
+
+               if (sides[i] == SIDE_FRONT)
+               {
+                       VectorCopy(p1, neww->points[neww->numpoints]);
+                       neww->numpoints++;
+               }
+
+               if (sides[i+1] == SIDE_ON || sides[i+1] == sides[i])
+                       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++;
+       }
+
+       // 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)
+{
+       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;
+
+       // 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];
+
+       *front = *back = NULL;
+
+       if (!counts[0])
+       {
+               *back = in;
+               return;
+       }
+       if (!counts[1])
+       {
+               *front = in;
+               return;
+       }
+
+       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");
+
+       *front = f = NewWinding(maxpts);
+       *back = b = NewWinding(maxpts);
+
+       for (i = 0;i < in->numpoints;i++)
+       {
+               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++;
+               }
+
+               if (sides[i+1] == SIDE_ON || sides[i+1] == sides[i])
+                       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, f->points[f->numpoints]);
+               f->numpoints++;
+               VectorCopy(mid, b->points[b->numpoints]);
+               b->numpoints++;
+       }
+}
+
+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->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)
+       {
+               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->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->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);
+
+                               // 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++;
+                       }
+                       FreeWinding(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 = *node->plane;
+
+       nodeportalwinding = BaseWindingForPlane(node->plane);
+       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 = ClipWinding(nodeportalwinding, &clipplane, 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
+               DivideWinding(portal->winding, plane, &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;
+               FreeWinding(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->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;
+                       }
+               }
+       }
+#endif
+}
+
+static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
+{
+       int i, j, stylecounts[256], totalcount, remapstyles[256];
+       msurface_t *surf;
+       memset(stylecounts, 0, sizeof(stylecounts));
+       for (i = 0;i < model->nummodelsurfaces;i++)
+       {
+               surf = model->surfaces + model->firstmodelsurface + i;
+               for (j = 0;j < MAXLIGHTMAPS;j++)
+                       stylecounts[surf->styles[j]]++;
+       }
+       totalcount = 0;
+       model->light_styles = 0;
+       for (i = 0;i < 255;i++)
+       {
+               if (stylecounts[i])
+               {
+                       remapstyles[i] = model->light_styles++;
+                       totalcount += stylecounts[i] + 1;
+               }
+       }
+       if (!totalcount)
+               return;
+       model->light_style = Mem_Alloc(mempool, model->light_styles * sizeof(qbyte));
+       model->light_stylevalue = Mem_Alloc(mempool, model->light_styles * sizeof(int));
+       model->light_styleupdatechains = Mem_Alloc(mempool, model->light_styles * sizeof(msurface_t **));
+       model->light_styleupdatechainsbuffer = Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
+       model->light_styles = 0;
+       for (i = 0;i < 255;i++)
+               if (stylecounts[i])
+                       model->light_style[model->light_styles++] = i;
+       j = 0;
+       for (i = 0;i < model->light_styles;i++)
+       {
+               model->light_styleupdatechains[i] = model->light_styleupdatechainsbuffer + j;
+               j += stylecounts[model->light_style[i]] + 1;
+       }
+       for (i = 0;i < model->nummodelsurfaces;i++)
+       {
+               surf = model->surfaces + model->firstmodelsurface + i;
+               for (j = 0;j < MAXLIGHTMAPS;j++)
+                       if (surf->styles[j] != 255)
+                               *model->light_styleupdatechains[remapstyles[surf->styles[j]]]++ = surf;
+       }
+       j = 0;
+       for (i = 0;i < model->light_styles;i++)
+       {
+               *model->light_styleupdatechains[i] = NULL;
+               model->light_styleupdatechains[i] = model->light_styleupdatechainsbuffer + j;
+               j += stylecounts[model->light_style[i]] + 1;
+       }
+}
+
+static void Mod_Q1BSP_BuildPVSTextureChains(model_t *model)
+{
+       int i, j;
+       for (i = 0;i < model->numtextures;i++)
+               model->pvstexturechainslength[i] = 0;
+       for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
+       {
+               if (model->surfacepvsframes[j] == model->pvsframecount)
+               {
+                       model->pvssurflist[model->pvssurflistlength++] = j;
+                       model->pvstexturechainslength[model->surfaces[j].texinfo->texture->number]++;
+               }
+       }
+       for (i = 0, j = 0;i < model->numtextures;i++)
+       {
+               if (model->pvstexturechainslength[i])
+               {
+                       model->pvstexturechains[i] = model->pvstexturechainsbuffer + j;
+                       j += model->pvstexturechainslength[i] + 1;
+               }
+               else
+                       model->pvstexturechains[i] = NULL;
+       }
+       for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
+               if (model->surfacepvsframes[j] == model->pvsframecount)
+                       *model->pvstexturechains[model->surfaces[j].texinfo->texture->number]++ = model->surfaces + j;
+       for (i = 0;i < model->numtextures;i++)
+       {
+               if (model->pvstexturechainslength[i])
+               {
+                       *model->pvstexturechains[i] = NULL;
+                       model->pvstexturechains[i] -= model->pvstexturechainslength[i];
+               }
+       }
+}
+
+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, j, k;
+       dheader_t *header;
+       dmodel_t *bm;
+       mempool_t *mainmempool;
+       char *loadname;
+       model_t *originalloadmodel;
+       float dist, modelyawradius, modelradius, *vec;
+       msurface_t *surf;
+       surfmesh_t *mesh;
+
+       mod->type = mod_brush;
+
+       header = (dheader_t *)buffer;
+
+       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->ishlbsp = i == 30;
+
+       mod->FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
+       mod->PointInLeaf = Mod_Q1BSP_PointInLeaf;
+       mod->PointContents = Mod_Q1BSP_PointContents;
+       mod->LeafPVS = Mod_Q1BSP_LeafPVS;
+       mod->BuildPVSTextureChains = Mod_Q1BSP_BuildPVSTextureChains;
+
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", mod->ishlbsp);
+               // until we get a texture for it...
+               R_ResetQuakeSky();
+       }
+
+// swap all the lumps
+       mod_base = (qbyte *)header;
+
+       for (i = 0;i < (int) sizeof(dheader_t) / 4;i++)
+               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+
+// load into heap
+
+       // store which lightmap format to use
+       mod->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]);
+
+       Mod_Q1BSP_MakeHull0();
+       Mod_Q1BSP_MakePortals();
+
+       mod->numframes = 2;             // regular and alternate animation
+
+       mainmempool = mod->mempool;
+       loadname = mod->name;
+
+       Mod_Q1BSP_LoadLightList();
+       originalloadmodel = loadmodel;
+
+//
+// set up the submodels(FIXME: this is confusing)
+//
+       for (i = 0;i < mod->numsubmodels;i++)
+       {
+               bm = &mod->submodels[i];
+
+               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;
+               }
+
+               mod->firstmodelsurface = bm->firstface;
+               mod->nummodelsurfaces = bm->numfaces;
+
+               // this gets altered below if sky is used
+               mod->DrawSky = NULL;
+               mod->Draw = R_Model_Brush_Draw;
+               mod->DrawFakeShadow = NULL;
+               mod->DrawShadowVolume = R_Model_Brush_DrawShadowVolume;
+               mod->DrawLight = R_Model_Brush_DrawLight;
+               mod->pvstexturechains = Mem_Alloc(originalloadmodel->mempool, mod->numtextures * sizeof(msurface_t **));
+               mod->pvstexturechainsbuffer = Mem_Alloc(originalloadmodel->mempool,(mod->nummodelsurfaces + mod->numtextures) * sizeof(msurface_t *));
+               mod->pvstexturechainslength = Mem_Alloc(originalloadmodel->mempool, mod->numtextures * sizeof(int));
+               Mod_Q1BSP_BuildPVSTextureChains(mod);
+               Mod_Q1BSP_BuildLightmapUpdateChains(originalloadmodel->mempool, mod);
+               if (mod->nummodelsurfaces)
+               {
+                       // 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->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;
+                               // LordHavoc: submodels always clip, even if water
+                               if (mod->numsubmodels - 1)
+                                       surf->flags |= SURF_SOLIDCLIP;
+                               // calculate bounding shapes
+                               for (mesh = surf->mesh;mesh;mesh = mesh->chain)
+                               {
+                                       for (k = 0, vec = mesh->vertex3f;k < mesh->numverts;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
+               {
+                       // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
+                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadname);
+               }
+               Mod_Q1BSP_BuildSurfaceNeighbors(mod->surfaces + mod->firstmodelsurface, mod->nummodelsurfaces, originalloadmodel->mempool);
+
+               mod->numleafs = bm->visleafs;
+
+               // LordHavoc: only register submodels if it is the world
+               // (prevents bsp models from replacing world submodels)
+               if (loadmodel->isworldmodel && i < (mod->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;
+               }
+       }
+
+       loadmodel = originalloadmodel;
+       //Mod_Q1BSP_ProcessLightList();
+}
+
+static void Mod_Q2BSP_LoadEntities(lump_t *l)
+{
+}
+
+static void Mod_Q2BSP_LoadPlanes(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_LoadPlanes: 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_Q2BSP_LoadVertices(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_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++)
+       {
+       }
+*/
+}
+
+static void Mod_Q2BSP_LoadVisibility(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_LoadVisibility: 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_Q2BSP_LoadNodes(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_LoadNodes: 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_Q2BSP_LoadTexInfo(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_LoadTexInfo: 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_Q2BSP_LoadFaces(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_LoadFaces: 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_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));
+
+       loadmodel-> = out;
+       loadmodel->num = count;
+
+       for (i = 0;i < count;i++, in++, out++)
+       {
+       }
+*/
+}
+
+static void Mod_Q2BSP_LoadLeafs(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_LoadLeafs: 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_Q2BSP_LoadLeafFaces(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_LoadLeafFaces: 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_Q2BSP_LoadLeafBrushes(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_LoadLeafBrushes: 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_Q2BSP_LoadEdges(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_LoadEdges: 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_Q2BSP_LoadSurfEdges(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_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_Q2BSP_LoadBrushes(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_LoadBrushes: 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_Q2BSP_LoadBrushSides(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_LoadBrushSides: 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_Q2BSP_LoadAreas(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_LoadAreas: 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_Q2BSP_LoadAreaPortals(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_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_Q2BSP_LoadModels(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_LoadModels: 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++)
+       {
+       }
+*/
+}
+
+void Mod_Q2BSP_Load(model_t *mod, void *buffer)
+{
+       int i;
+       q2dheader_t *header;
+
+       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, BSPVERSION);
+       mod->ishlbsp = false;
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", mod->ishlbsp);
+               // until we get a texture for it...
+               R_ResetQuakeSky();
+       }
+
+       mod_base = (qbyte *)header;
+
+       // swap all the lumps
+       for (i = 0;i < (int) sizeof(dheader_t) / 4;i++)
+               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+
+       // store which lightmap format to use
+       mod->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]);
+}
+
+void Mod_Q3BSP_Load(model_t *mod, void *buffer)
+{
+       Host_Error("Mod_Q3BSP_Load: not yet implemented\n");
+}
+
+void Mod_IBSP_Load(model_t *mod, void *buffer)
+{
+       int i = LittleLong(* ((int *)buffer));
+       if (i == 46)
+               Mod_Q3BSP_Load(mod,buffer);
+       else if (i == 38)
+               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");
+}
+