]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
removed detail texturing (it only worked in q1bsp and hlbsp maps, did not work proper...
[xonotic/darkplaces.git] / model_brush.c
index 44c41917a2cf0a326bd59003325800855cd0fdf3..18dc01fe2826d93f58add32c75940df419765854 100644 (file)
@@ -26,12 +26,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "wad.h"
 
 
-// note: model_shared.c sets up r_notexture, and r_surf_notexture
-
-qbyte mod_q1bsp_novis[(MAX_MAP_LEAFS + 7)/ 8];
-
 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128"};
 cvar_t halflifebsp = {0, "halflifebsp", "0"};
+cvar_t mcbsp = {0, "mcbsp", "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"};
@@ -48,11 +45,11 @@ cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1"};
 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1"};
 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0"};
 
-static void Mod_Q1BSP_Collision_Init (void);
 void Mod_BrushInit(void)
 {
 //     Cvar_RegisterVariable(&r_subdivide_size);
        Cvar_RegisterVariable(&halflifebsp);
+       Cvar_RegisterVariable(&mcbsp);
        Cvar_RegisterVariable(&r_novis);
        Cvar_RegisterVariable(&r_miplightmaps);
        Cvar_RegisterVariable(&r_lightmaprgba);
@@ -68,8 +65,6 @@ void Mod_BrushInit(void)
        Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
        Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
        Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
-       memset(mod_q1bsp_novis, 0xff, sizeof(mod_q1bsp_novis));
-       Mod_Q1BSP_Collision_Init();
 }
 
 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
@@ -113,7 +108,9 @@ static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
 {
        int clusterindex, side, nodestackindex = 0;
        mnode_t *node, *nodestack[1024];
-       node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
+       if (!model->brush.num_pvsclusters)
+               return true;
+       node = model->brush.data_nodes;
        for (;;)
        {
                if (node->plane)
@@ -155,6 +152,99 @@ static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
        return false;
 }
 
+static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
+{
+       int clusterindex, side, nodestackindex = 0;
+       mnode_t *node, *nodestack[1024];
+       if (!model->brush.num_leafs)
+               return true;
+       node = model->brush.data_nodes;
+       for (;;)
+       {
+               if (node->plane)
+               {
+                       // node - recurse down the BSP tree
+                       side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       if (side < 2)
+                       {
+                               // box is on one side of plane, take that path
+                               node = node->children[side];
+                       }
+                       else
+                       {
+                               // box crosses plane, take one path and remember the other
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                       }
+               }
+               else
+               {
+                       // leaf - check cluster bit
+                       clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
+                       if (CHECKPVSBIT(pvs, clusterindex))
+                       {
+                               // it is visible, return immediately with the news
+                               return true;
+                       }
+                       else
+                       {
+                               // nothing to see here, try another path we didn't take earlier
+                               if (nodestackindex == 0)
+                                       break;
+                               node = nodestack[--nodestackindex];
+                       }
+               }
+       }
+       // it is not visible
+       return false;
+}
+
+static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const qbyte *visibleleafs, const vec3_t mins, const vec3_t maxs)
+{
+       int side, nodestackindex = 0;
+       mnode_t *node, *nodestack[1024];
+       node = model->brush.data_nodes;
+       for (;;)
+       {
+               if (node->plane)
+               {
+                       // node - recurse down the BSP tree
+                       side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
+                       if (side < 2)
+                       {
+                               // box is on one side of plane, take that path
+                               node = node->children[side];
+                       }
+                       else
+                       {
+                               // box crosses plane, take one path and remember the other
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
+                               node = node->children[1];
+                       }
+               }
+               else
+               {
+                       // leaf - check if it is visible
+                       if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
+                       {
+                               // it is visible, return immediately with the news
+                               return true;
+                       }
+                       else
+                       {
+                               // nothing to see here, try another path we didn't take earlier
+                               if (nodestackindex == 0)
+                                       break;
+                               node = nodestack[--nodestackindex];
+                       }
+               }
+       }
+       // it is not visible
+       return false;
+}
+
 typedef struct findnonsolidlocationinfo_s
 {
        vec3_t center;
@@ -165,43 +255,28 @@ typedef struct findnonsolidlocationinfo_s
 }
 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;
+       int i, surfacenum, k, *tri, *mark;
        float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
-#if 0
-       float surfnormal[3];
-#endif
-       msurface_t *surf;
-       for (surfnum = 0, mark = leaf->firstleafface;surfnum < leaf->numleaffaces;surfnum++, mark++)
+       msurface_t *surface;
+       for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
        {
-               surf = info->model->brushq1.surfaces + *mark;
-               if (surf->flags & SURF_SOLIDCLIP)
+               surface = info->model->data_surfaces + *mark;
+               if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
                {
-#if 0
-                       VectorCopy(surf->plane->normal, surfnormal);
-                       if (surf->flags & SURF_PLANEBACK)
-                               VectorNegate(surfnormal, surfnormal);
-#endif
-                       for (k = 0;k < surf->mesh.num_triangles;k++)
+                       for (k = 0;k < surface->num_triangles;k++)
                        {
-                               tri = surf->mesh.data_element3i + k * 3;
-                               VectorCopy((surf->mesh.data_vertex3f + tri[0] * 3), vert[0]);
-                               VectorCopy((surf->mesh.data_vertex3f + tri[1] * 3), vert[1]);
-                               VectorCopy((surf->mesh.data_vertex3f + tri[2] * 3), vert[2]);
+                               tri = (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle) + k * 3;
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[0] * 3), vert[0]);
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[1] * 3), vert[1]);
+                               VectorCopy((surface->groupmesh->data_vertex3f + tri[2] * 3), vert[2]);
                                VectorSubtract(vert[1], vert[0], edge[0]);
                                VectorSubtract(vert[2], vert[1], edge[1]);
                                CrossProduct(edge[1], edge[0], facenormal);
                                if (facenormal[0] || facenormal[1] || facenormal[2])
                                {
                                        VectorNormalize(facenormal);
-#if 0
-                                       if (VectorDistance(facenormal, surfnormal) > 0.01f)
-                                               Con_Printf("a2! %f %f %f != %f %f %f\n", facenormal[0], facenormal[1], facenormal[2], surfnormal[0], surfnormal[1], surfnormal[2]);
-#endif
                                        f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
                                        if (f <= info->bestdist && f >= -info->bestdist)
                                        {
@@ -212,19 +287,6 @@ static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *in
                                                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])
@@ -303,7 +365,7 @@ static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, m
        }
        else
        {
-               if (((mleaf_t *)node)->numleaffaces)
+               if (((mleaf_t *)node)->numleafsurfaces)
                        Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
        }
 }
@@ -577,6 +639,13 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace,
        VectorSubtract(boxstartmaxs, boxstartmins, boxsize);
        if (boxsize[0] < 3)
                rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
+       else if (model->brush.ismcbsp)
+       {
+               if (boxsize[2] < 48) // pick the nearest of 40 or 56
+                       rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
+               else
+                       rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
+       }
        else if (model->brush.ishlbsp)
        {
                // LordHavoc: this has to have a minor tolerance (the .1) because of
@@ -615,40 +684,6 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace,
 #endif
 }
 
-static hull_t box_hull;
-static dclipnode_t box_clipnodes[6];
-static mplane_t box_planes[6];
-
-static void Mod_Q1BSP_Collision_Init (void)
-{
-       int             i;
-       int             side;
-
-       //Set up the planes and clipnodes so that the six floats of a bounding box
-       //can just be stored out and get a proper hull_t structure.
-
-       box_hull.clipnodes = box_clipnodes;
-       box_hull.planes = box_planes;
-       box_hull.firstclipnode = 0;
-       box_hull.lastclipnode = 5;
-
-       for (i = 0;i < 6;i++)
-       {
-               box_clipnodes[i].planenum = i;
-
-               side = i&1;
-
-               box_clipnodes[i].children[side] = CONTENTS_EMPTY;
-               if (i != 5)
-                       box_clipnodes[i].children[side^1] = i + 1;
-               else
-                       box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
-
-               box_planes[i].type = i>>1;
-               box_planes[i].normal[i>>1] = 1;
-       }
-}
-
 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents)
 {
 #if 1
@@ -681,6 +716,9 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
        Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 #else
        RecursiveHullCheckTraceInfo_t rhc;
+       static hull_t box_hull;
+       static dclipnode_t box_clipnodes[6];
+       static mplane_t box_planes[6];
        // fill in a default trace
        memset(&rhc, 0, sizeof(rhc));
        memset(trace, 0, sizeof(trace_t));
@@ -696,6 +734,36 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
 #if COLLISIONPARANOID >= 3
        Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
 #endif
+
+       if (box_hull.clipnodes == NULL)
+       {
+               int i, side;
+
+               //Set up the planes and clipnodes so that the six floats of a bounding box
+               //can just be stored out and get a proper hull_t structure.
+
+               box_hull.clipnodes = box_clipnodes;
+               box_hull.planes = box_planes;
+               box_hull.firstclipnode = 0;
+               box_hull.lastclipnode = 5;
+
+               for (i = 0;i < 6;i++)
+               {
+                       box_clipnodes[i].planenum = i;
+
+                       side = i&1;
+
+                       box_clipnodes[i].children[side] = CONTENTS_EMPTY;
+                       if (i != 5)
+                               box_clipnodes[i].children[side^1] = i + 1;
+                       else
+                               box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
+
+                       box_planes[i].type = i>>1;
+                       box_planes[i].normal[i>>1] = 1;
+               }
+       }
+
        // trace a line through the generated clipping hull
        //rhc.boxsupercontents = boxsupercontents;
        rhc.hull = &box_hull;
@@ -714,7 +782,7 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
 #endif
 }
 
-static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
+static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
 {
        int side, distz = endz - startz;
        float front, back;
@@ -758,7 +826,7 @@ loc0:
        }
 
        // go down front side
-       if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
+       if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
                return true;    // hit something
        else
        {
@@ -766,31 +834,31 @@ loc0:
                if (node->numsurfaces)
                {
                        int i, ds, dt;
-                       msurface_t *surf;
+                       msurface_t *surface;
 
-                       surf = r_refdef.worldmodel->brushq1.surfaces + node->firstsurface;
-                       for (i = 0;i < node->numsurfaces;i++, surf++)
+                       surface = model->data_surfaces + node->firstsurface;
+                       for (i = 0;i < node->numsurfaces;i++, surface++)
                        {
-                               if (!(surf->flags & SURF_LIGHTMAP) || !surf->samples)
+                               if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
                                        continue;       // no lightmaps
 
-                               ds = (int) (x * surf->texinfo->vecs[0][0] + y * surf->texinfo->vecs[0][1] + mid * surf->texinfo->vecs[0][2] + surf->texinfo->vecs[0][3]) - surf->texturemins[0];
-                               dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]) - surf->texturemins[1];
+                               ds = (int) (x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0];
+                               dt = (int) (x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1];
 
-                               if (ds >= 0 && ds < surf->extents[0] && dt >= 0 && dt < surf->extents[1])
+                               if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
                                {
                                        qbyte *lightmap;
                                        int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
-                                       lmwidth = ((surf->extents[0]>>4)+1);
-                                       lmheight = ((surf->extents[1]>>4)+1);
+                                       lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
+                                       lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
                                        line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
                                        size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
 
-                                       lightmap = surf->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
+                                       lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
 
-                                       for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
+                                       for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
                                        {
-                                               scale = d_lightstylevalue[surf->styles[maps]];
+                                               scale = d_lightstylevalue[surface->lightmapinfo->styles[maps]];
                                                r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
                                                r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
                                                r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
@@ -849,7 +917,7 @@ middle sample (the one which was requested)
 
 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
 {
-       Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
+       Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
 }
 
 static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *out, qbyte *outend)
@@ -966,35 +1034,41 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
        qbyte *data, *mtdata;
        char name[256];
 
-       loadmodel->brushq1.textures = NULL;
+       loadmodel->data_textures = NULL;
 
        // add two slots for notexture walls and notexture liquids
        if (l->filelen)
        {
                m = (dmiptexlump_t *)(mod_base + l->fileofs);
                m->nummiptex = LittleLong (m->nummiptex);
-               loadmodel->brushq1.numtextures = m->nummiptex + 2;
+               loadmodel->num_textures = m->nummiptex + 2;
        }
        else
        {
                m = NULL;
-               loadmodel->brushq1.numtextures = 2;
+               loadmodel->num_textures = 2;
        }
 
-       loadmodel->brushq1.textures = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numtextures * sizeof(texture_t));
+       loadmodel->data_textures = Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
 
        // fill out all slots with notexture
-       for (i = 0, tx = loadmodel->brushq1.textures;i < loadmodel->brushq1.numtextures;i++, tx++)
+       for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
        {
-               tx->number = i;
                strcpy(tx->name, "NO TEXTURE FOUND");
                tx->width = 16;
                tx->height = 16;
-               tx->skin.base = r_notexture;
-               if (i == loadmodel->brushq1.numtextures - 1)
-                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+               tx->skin.base = r_texture_notexture;
+               tx->basematerialflags = 0;
+               if (i == loadmodel->num_textures - 1)
+               {
+                       tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
+                       tx->supercontents = SUPERCONTENTS_WATER;
+               }
                else
-                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
+               {
+                       tx->basematerialflags |= MATERIALFLAG_WALL;
+                       tx->supercontents = SUPERCONTENTS_SOLID;
+               }
                tx->currentframe = tx;
        }
 
@@ -1039,7 +1113,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                        if (name[j] >= 'A' && name[j] <= 'Z')
                                name[j] += 'a' - 'A';
 
-               tx = loadmodel->brushq1.textures + i;
+               tx = loadmodel->data_textures + i;
                strcpy(tx->name, name);
                tx->width = mtwidth;
                tx->height = mtheight;
@@ -1067,7 +1141,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                }
                else
                {
-                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true, true))
+                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
                        {
                                // did not find external texture, load it from the bsp or wad3
                                if (loadmodel->brush.ishlbsp)
@@ -1102,7 +1176,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                                Mem_Free(freepixels);
                                }
                                else if (mtdata) // texture included
-                                       Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, true, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
+                                       Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
                        }
                }
                if (tx->skin.base == NULL)
@@ -1110,25 +1184,40 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                        // no texture found
                        tx->width = 16;
                        tx->height = 16;
-                       tx->skin.base = r_notexture;
+                       tx->skin.base = r_texture_notexture;
                }
 
+               tx->basematerialflags = 0;
                if (tx->name[0] == '*')
                {
                        // turb does not block movement
-                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_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;
+                               tx->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
                        else
-                               tx->flags |= SURF_WATERALPHA;
+                               tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
+                       if (!strncmp(tx->name, "*lava", 5))
+                               tx->supercontents = SUPERCONTENTS_LAVA;
+                       else if (!strncmp(tx->name, "*slime", 6))
+                               tx->supercontents = SUPERCONTENTS_SLIME;
+                       else
+                               tx->supercontents = SUPERCONTENTS_WATER;
                }
                else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
-                       tx->flags = SURF_DRAWSKY | SURF_SOLIDCLIP;
+               {
+                       tx->supercontents = SUPERCONTENTS_SKY;
+                       tx->basematerialflags |= MATERIALFLAG_SKY;
+               }
                else
-                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
+               {
+                       tx->supercontents = SUPERCONTENTS_SOLID;
+                       tx->basematerialflags |= MATERIALFLAG_WALL;
+               }
+               if (tx->skin.fog)
+                       tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
 
                // start out with no animation
                tx->currentframe = tx;
@@ -1137,7 +1226,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
        // sequence the animations
        for (i = 0;i < m->nummiptex;i++)
        {
-               tx = loadmodel->brushq1.textures + i;
+               tx = loadmodel->data_textures + i;
                if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
                        continue;
                if (tx->anim_total[0] || tx->anim_total[1])
@@ -1149,7 +1238,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
 
                for (j = i;j < m->nummiptex;j++)
                {
-                       tx2 = loadmodel->brushq1.textures + j;
+                       tx2 = loadmodel->data_textures + j;
                        if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
                                continue;
 
@@ -1248,6 +1337,11 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                for (i=0; i<l->filelen; i++)
                        loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
        }
+       else if (loadmodel->brush.ismcbsp)
+       {
+               loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
+               memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
+       }
        else // LordHavoc: bsp version 29 (normal white lighting)
        {
                // LordHavoc: hope is not lost yet, check for a .lit file to load
@@ -1257,7 +1351,7 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                data = (qbyte*) FS_LoadFile(litfilename, tempmempool, false);
                if (data)
                {
-                       if (fs_filesize > 8 && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
+                       if (fs_filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
                        {
                                i = LittleLong(((int *)data)[1]);
                                if (i == 1)
@@ -1279,7 +1373,7 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                                if (fs_filesize == 8)
                                        Con_Print("Empty .lit file, ignoring\n");
                                else
-                                       Con_Print("Corrupt .lit file (old version?), ignoring\n");
+                                       Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", fs_filesize, 8 + l->filelen * 3);
                                Mem_Free(data);
                        }
                }
@@ -1547,25 +1641,25 @@ static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
                out->flags = LittleLong(in->flags);
 
                out->texture = NULL;
-               if (loadmodel->brushq1.textures)
+               if (loadmodel->data_textures)
                {
-                       if ((unsigned int) miptex >= (unsigned int) loadmodel->brushq1.numtextures)
-                               Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->brushq1.numtextures);
+                       if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
+                               Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
                        else
-                               out->texture = loadmodel->brushq1.textures + miptex;
+                               out->texture = loadmodel->data_textures + miptex;
                }
                if (out->flags & TEX_SPECIAL)
                {
                        // if texture chosen is NULL or the shader needs a lightmap,
                        // force to notexture water shader
-                       if (out->texture == NULL || out->texture->flags & SURF_LIGHTMAP)
-                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 1);
+                       if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
+                               out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
                }
                else
                {
                        // if texture chosen is NULL, force to notexture
                        if (out->texture == NULL)
-                               out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 2);
+                               out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
                }
        }
 }
@@ -1690,7 +1784,7 @@ static void SubdividePolygon(int numverts, float *verts)
 //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)
+static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
 {
        int i, j;
        surfvertex_t *v;
@@ -1698,11 +1792,11 @@ static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
 
        subdivpolytriangles = 0;
        subdivpolyverts = 0;
-       SubdividePolygon(surf->poly_numverts, surf->poly_verts);
+       SubdividePolygon(surface->num_vertices, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex));
        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));
+       surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
        mesh->num_vertices = subdivpolyverts;
        mesh->num_triangles = subdivpolytriangles;
        mesh->vertex = (surfvertex_t *)(mesh + 1);
@@ -1716,90 +1810,49 @@ static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
        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]);
+               v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
+               v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
        }
 }
 #endif
 
-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->brushq1.surfedges[firstedge + i];
-               if (lindex > 0)
-                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position;
-               else
-                       vec = loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position;
-               VectorCopy(vec, vert);
-               vert += 3;
-       }
-
-       // calculate polygon bounding box and center
-       vert = surf->poly_verts;
-       VectorCopy(vert, mins);
-       VectorCopy(vert, maxs);
-       vert += 3;
-       for (i = 1;i < surf->poly_numverts;i++, vert += 3)
-       {
-               if (mins[0] > vert[0]) mins[0] = vert[0];if (maxs[0] < vert[0]) maxs[0] = vert[0];
-               if (mins[1] > vert[1]) mins[1] = vert[1];if (maxs[1] < vert[1]) maxs[1] = vert[1];
-               if (mins[2] > vert[2]) mins[2] = vert[2];if (maxs[2] < vert[2]) maxs[2] = vert[2];
-       }
-       VectorCopy(mins, surf->poly_mins);
-       VectorCopy(maxs, surf->poly_maxs);
-       surf->poly_center[0] = (mins[0] + maxs[0]) * 0.5f;
-       surf->poly_center[1] = (mins[1] + maxs[1]) * 0.5f;
-       surf->poly_center[2] = (mins[2] + maxs[2]) * 0.5f;
-
-       // generate surface extents information
-       tex = surf->texinfo;
-       mins[0] = maxs[0] = DotProduct(surf->poly_verts, tex->vecs[0]) + tex->vecs[0][3];
-       mins[1] = maxs[1] = DotProduct(surf->poly_verts, tex->vecs[1]) + tex->vecs[1][3];
-       for (i = 1, v = surf->poly_verts + 3;i < surf->poly_numverts;i++, v += 3)
-       {
-               for (j = 0;j < 2;j++)
-               {
-                       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 *surf;
-       int i, count, surfnum, planenum, ssize, tsize, firstedge, numedges, totalverts, totaltris, totalmeshes;
-       surfmesh_t *mesh;
-       float s, t;
+       msurface_t *surface;
+       int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris;
+       float texmins[2], texmaxs[2], val;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
        count = l->filelen / sizeof(*in);
-       loadmodel->brushq1.surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
+       loadmodel->data_surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
+       loadmodel->data_surfaces_lightmapinfo = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
+
+       loadmodel->num_surfaces = count;
+
+       totalverts = 0;
+       totaltris = 0;
+       for (surfacenum = 0, in = (void *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
+       {
+               numedges = LittleShort(in->numedges);
+               totalverts += numedges;
+               totaltris += numedges - 2;
+       }
 
-       loadmodel->brushq1.numsurfaces = count;
+       // TODO: split up into multiple meshes as needed to avoid exceeding 65536
+       // vertex limit
+       loadmodel->nummeshes = 1;
+       loadmodel->meshlist = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t *));
+       loadmodel->meshlist[0] = Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
 
-       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, in++, surf++)
+       totalverts = 0;
+       totaltris = 0;
+       for (surfacenum = 0, in = (void *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
        {
-               surf->number = surfnum;
+               surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
+
                // FIXME: validate edges, texinfo, etc?
                firstedge = LittleLong(in->firstedge);
                numedges = LittleShort(in->numedges);
@@ -1808,146 +1861,152 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                i = LittleShort(in->texinfo);
                if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
                        Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)\n", i, loadmodel->brushq1.numtexinfo);
-               surf->texinfo = loadmodel->brushq1.texinfo + i;
-               surf->flags = surf->texinfo->texture->flags;
+               surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
+               surface->texture = surface->lightmapinfo->texinfo->texture;
 
                planenum = LittleShort(in->planenum);
                if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
                        Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)\n", planenum, loadmodel->brush.num_planes);
 
-               if (LittleShort(in->side))
-                       surf->flags |= SURF_PLANEBACK;
-
-               surf->plane = loadmodel->brush.data_planes + planenum;
+               //surface->flags = surface->texture->flags;
+               //if (LittleShort(in->side))
+               //      surface->flags |= SURF_PLANEBACK;
+               //surface->plane = loadmodel->brush.data_planes + planenum;
+
+               surface->groupmesh = loadmodel->meshlist[0];
+               surface->num_firstvertex = totalverts;
+               surface->num_vertices = numedges;
+               surface->num_firsttriangle = totaltris;
+               surface->num_triangles = numedges - 2;
+               totalverts += numedges;
+               totaltris += numedges - 2;
+
+               // convert edges back to a normal polygon
+               for (i = 0;i < surface->num_vertices;i++)
+               {
+                       int lindex = loadmodel->brushq1.surfedges[firstedge + i];
+                       float s, t;
+                       if (lindex > 0)
+                               VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
+                       else
+                               VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
+                       s = DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
+                       t = DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
+                       (surface->groupmesh->data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
+                       (surface->groupmesh->data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
+                       (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
+                       (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
+                       (surface->groupmesh->data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
+               }
 
-               // clear lightmap (filled in later)
-               surf->lightmaptexture = NULL;
+               for (i = 0;i < surface->num_triangles;i++)
+               {
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
+                       (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
+               }
 
-               // force lightmap upload on first time seeing the surface
-               surf->cached_dlight = true;
+               // compile additional data about the surface geometry
+               Mod_BuildTextureVectorsAndNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, surface->groupmesh->data_vertex3f, surface->groupmesh->data_texcoordtexture2f, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle), surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, true);
+               BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex));
 
-               Mod_Q1BSP_GenerateSurfacePolygon(surf, firstedge, numedges);
+               // generate surface extents information
+               texmins[0] = texmaxs[0] = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
+               texmins[1] = texmaxs[1] = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
+               for (i = 1;i < surface->num_vertices;i++)
+               {
+                       for (j = 0;j < 2;j++)
+                       {
+                               val = DotProduct((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
+                               texmins[j] = min(texmins[j], val);
+                               texmaxs[j] = max(texmaxs[j], val);
+                       }
+               }
+               for (i = 0;i < 2;i++)
+               {
+                       surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
+                       surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
+               }
 
-               ssize = (surf->extents[0] >> 4) + 1;
-               tsize = (surf->extents[1] >> 4) + 1;
+               smax = surface->lightmapinfo->extents[0] >> 4;
+               tmax = surface->lightmapinfo->extents[1] >> 4;
+               ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
+               tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 
                // lighting info
                for (i = 0;i < MAXLIGHTMAPS;i++)
-                       surf->styles[i] = in->styles[i];
+                       surface->lightmapinfo->styles[i] = in->styles[i];
+               // force lightmap upload on first time seeing the surface
+               surface->cached_dlight = true;
+               surface->lightmapinfo->lightmaptexturestride = 0;
+               surface->lightmaptexture = NULL;
                i = LittleLong(in->lightofs);
                if (i == -1)
-                       surf->samples = NULL;
+               {
+                       surface->lightmapinfo->samples = NULL;
+                       // give non-lightmapped water a 1x white lightmap
+                       if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
+                       {
+                               surface->lightmapinfo->samples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                               surface->lightmapinfo->styles[0] = 0;
+                               memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
+                       }
+               }
                else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
-                       surf->samples = loadmodel->brushq1.lightdata + i;
+                       surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
                else // LordHavoc: white lighting (bsp version 29)
-                       surf->samples = loadmodel->brushq1.lightdata + (i * 3);
+                       surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
 
-               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
+               if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
                {
-                       if ((surf->extents[0] >> 4) + 1 > (256) || (surf->extents[1] >> 4) + 1 > (256))
+                       int i, iu, iv;
+                       float u, v, ubase, vbase, uscale, vscale;
+
+                       if (ssize > 256 || tsize > 256)
                                Host_Error("Bad surface extents");
                        // stainmap for permanent marks on walls
-                       surf->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                       surface->lightmapinfo->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
                        // clear to white
-                       memset(surf->stainsamples, 255, ssize * tsize * 3);
-               }
-       }
-
-       // TODO: split up into multiple meshes as needed to avoid exceeding 65536
-       // vertex limit
-       loadmodel->nummeshes = 1;
-       loadmodel->meshlist = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t *));
-       loadmodel->meshlist[0] = Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, 0, 0, true, true, false);
-
-       for (surfnum = 0, surf = loadmodel->brushq1.surfaces, totalverts = 0, totaltris = 0, totalmeshes = 0;surfnum < count;surfnum++, totalverts += surf->poly_numverts, totaltris += surf->poly_numverts - 2, totalmeshes++, surf++)
-       {
-               mesh = &surf->mesh;
-               mesh->num_vertices = surf->poly_numverts;
-               mesh->num_triangles = surf->poly_numverts - 2;
-               mesh->data_vertex3f = loadmodel->meshlist[0]->data_vertex3f + totalverts * 3;
-               mesh->data_texcoordtexture2f = loadmodel->meshlist[0]->data_texcoordtexture2f + totalverts * 2;
-               mesh->data_texcoordlightmap2f = loadmodel->meshlist[0]->data_texcoordlightmap2f + totalverts * 2;
-               mesh->data_texcoorddetail2f = loadmodel->meshlist[0]->data_texcoorddetail2f + totalverts * 2;
-               mesh->data_svector3f = loadmodel->meshlist[0]->data_svector3f + totalverts * 3;
-               mesh->data_tvector3f = loadmodel->meshlist[0]->data_tvector3f + totalverts * 3;
-               mesh->data_normal3f = loadmodel->meshlist[0]->data_normal3f + totalverts * 3;
-               mesh->data_lightmapoffsets = loadmodel->meshlist[0]->data_lightmapoffsets + totalverts;
-               mesh->data_element3i = loadmodel->meshlist[0]->data_element3i + totaltris * 3;
-               mesh->data_neighbor3i = loadmodel->meshlist[0]->data_neighbor3i + totaltris * 3;
-
-               surf->lightmaptexturestride = 0;
-               surf->lightmaptexture = NULL;
-
-               for (i = 0;i < mesh->num_vertices;i++)
-               {
-                       mesh->data_vertex3f[i * 3 + 0] = surf->poly_verts[i * 3 + 0];
-                       mesh->data_vertex3f[i * 3 + 1] = surf->poly_verts[i * 3 + 1];
-                       mesh->data_vertex3f[i * 3 + 2] = surf->poly_verts[i * 3 + 2];
-                       s = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
-                       t = DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
-                       mesh->data_texcoordtexture2f[i * 2 + 0] = s / surf->texinfo->texture->width;
-                       mesh->data_texcoordtexture2f[i * 2 + 1] = t / surf->texinfo->texture->height;
-                       mesh->data_texcoorddetail2f[i * 2 + 0] = s * (1.0f / 16.0f);
-                       mesh->data_texcoorddetail2f[i * 2 + 1] = t * (1.0f / 16.0f);
-                       mesh->data_texcoordlightmap2f[i * 2 + 0] = 0;
-                       mesh->data_texcoordlightmap2f[i * 2 + 1] = 0;
-                       mesh->data_lightmapoffsets[i] = 0;
-               }
-
-               for (i = 0;i < mesh->num_triangles;i++)
-               {
-                       mesh->data_element3i[i * 3 + 0] = 0;
-                       mesh->data_element3i[i * 3 + 1] = i + 1;
-                       mesh->data_element3i[i * 3 + 2] = i + 2;
-               }
-
-               Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
-               Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, mesh->data_vertex3f, mesh->data_texcoordtexture2f, mesh->data_element3i, mesh->data_svector3f, mesh->data_tvector3f, mesh->data_normal3f);
-
-               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
-               {
-                       int i, iu, iv, smax, tmax;
-                       float u, v, ubase, vbase, uscale, vscale;
-
-                       smax = surf->extents[0] >> 4;
-                       tmax = surf->extents[1] >> 4;
+                       memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 
                        if (r_miplightmaps.integer)
                        {
-                               surf->lightmaptexturestride = smax+1;
-                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                               surface->lightmapinfo->lightmaptexturestride = ssize;
+                               surface->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surface->lightmapinfo->lightmaptexturestride, tsize, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_MIPMAP | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
                        }
                        else
                        {
-                               surf->lightmaptexturestride = R_CompatibleFragmentWidth(smax+1, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
-                               surf->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surf->lightmaptexturestride, (surf->extents[1]>>4)+1, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
+                               surface->lightmapinfo->lightmaptexturestride = R_CompatibleFragmentWidth(ssize, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, 0);
+                               surface->lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, NULL, surface->lightmapinfo->lightmaptexturestride, tsize, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FRAGMENT | TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
                        }
-                       R_FragmentLocation(surf->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
-                       uscale = (uscale - ubase) / (smax + 1);
-                       vscale = (vscale - vbase) / (tmax + 1);
+                       R_FragmentLocation(surface->lightmaptexture, NULL, NULL, &ubase, &vbase, &uscale, &vscale);
+                       uscale = (uscale - ubase) / ssize;
+                       vscale = (vscale - vbase) / tsize;
 
-                       for (i = 0;i < mesh->num_vertices;i++)
+                       for (i = 0;i < surface->num_vertices;i++)
                        {
-                               u = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]) + 8 - surf->texturemins[0]) * (1.0 / 16.0);
-                               v = ((DotProduct((mesh->data_vertex3f + i * 3), surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3]) + 8 - surf->texturemins[1]) * (1.0 / 16.0);
-                               mesh->data_texcoordlightmap2f[i * 2 + 0] = u * uscale + ubase;
-                               mesh->data_texcoordlightmap2f[i * 2 + 1] = v * vscale + vbase;
+                               u = ((DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
+                               v = ((DotProduct(((surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
+                               (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
+                               (surface->groupmesh->data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
                                // LordHavoc: calc lightmap data offset for vertex lighting to use
                                iu = (int) u;
                                iv = (int) v;
-                               mesh->data_lightmapoffsets[i] = (bound(0, iv, tmax) * (smax+1) + bound(0, iu, smax)) * 3;
+                               (surface->groupmesh->data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
                        }
                }
        }
 }
 
-static void Mod_Q1BSP_SetParent(mnode_t *node, mnode_t *parent)
+static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
 {
+       //if (node->parent)
+       //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion\n");
        node->parent = parent;
        if (node->plane)
        {
-               Mod_Q1BSP_SetParent(node->children[0], node);
-               Mod_Q1BSP_SetParent(node->children[1], node);
+               Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
+               Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
        }
 }
 
@@ -1990,7 +2049,7 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
                }
        }
 
-       Mod_Q1BSP_SetParent(loadmodel->brush.data_nodes, NULL); // sets nodes and leafs
+       Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
 }
 
 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
@@ -2025,13 +2084,13 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
 
                out->contents = LittleLong(in->contents);
 
-               out->firstleafface = loadmodel->brush.data_leaffaces + LittleShort(in->firstmarksurface);
-               out->numleaffaces = LittleShort(in->nummarksurfaces);
-               if (out->firstleafface < 0 || LittleShort(in->firstmarksurface) + out->numleaffaces > loadmodel->brush.num_leaffaces)
+               out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
+               out->numleafsurfaces = LittleShort(in->nummarksurfaces);
+               if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
                {
-                       Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafface range %i:%i outside range %i:%i\n", out->firstleafface, out->firstleafface + out->numleaffaces, 0, loadmodel->brush.num_leaffaces);
-                       out->firstleafface = NULL;
-                       out->numleaffaces = 0;
+                       Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", out->firstleafsurface, out->firstleafsurface + out->numleafsurfaces, 0, loadmodel->brush.num_leafsurfaces);
+                       out->firstleafsurface = NULL;
+                       out->numleafsurfaces = 0;
                }
 
                out->clusterindex = i - 1;
@@ -2070,7 +2129,35 @@ static void Mod_Q1BSP_LoadClipnodes(lump_t *l)
        loadmodel->brushq1.clipnodes = out;
        loadmodel->brushq1.numclipnodes = count;
 
-       if (loadmodel->brush.ishlbsp)
+       if (loadmodel->brush.ismcbsp)
+       {
+               hull = &loadmodel->brushq1.hulls[1];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brush.data_planes;
+               hull->clip_mins[0] = -12;
+               hull->clip_mins[1] = -12;
+               hull->clip_mins[2] = -24;
+               hull->clip_maxs[0] = 12;
+               hull->clip_maxs[1] = 12;
+               hull->clip_maxs[2] = 32;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+
+               hull = &loadmodel->brushq1.hulls[2];
+               hull->clipnodes = out;
+               hull->firstclipnode = 0;
+               hull->lastclipnode = count-1;
+               hull->planes = loadmodel->brush.data_planes;
+               hull->clip_mins[0] = -12;
+               hull->clip_mins[1] = -12;
+               hull->clip_mins[2] = -24;
+               hull->clip_maxs[0] = 12;
+               hull->clip_maxs[1] = 12;
+               hull->clip_maxs[2] = 16;
+               VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
+       }
+       else if (loadmodel->brush.ishlbsp)
        {
                hull = &loadmodel->brushq1.hulls[1];
                hull->clipnodes = out;
@@ -2184,15 +2271,15 @@ static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
-       loadmodel->brush.num_leaffaces = l->filelen / sizeof(*in);
-       loadmodel->brush.data_leaffaces = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leaffaces * sizeof(int));
+       loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
+       loadmodel->brush.data_leafsurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
 
-       for (i = 0;i < loadmodel->brush.num_leaffaces;i++)
+       for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
        {
                j = (unsigned) LittleShort(in[i]);
-               if (j >= loadmodel->brushq1.numsurfaces)
+               if (j >= loadmodel->num_surfaces)
                        Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
-               loadmodel->brush.data_leaffaces[i] = j;
+               loadmodel->brush.data_leafsurfaces[i] = j;
        }
 }
 
@@ -2645,69 +2732,69 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
                Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
                nodeportal->numpoints = 0;
        }
-       else
-       {
-               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];
+       AddPortalToNodes(nodeportal, front, back);
 
-                       other_node = portal->nodes[!side];
-                       RemovePortalFromNodes(portal);
-
-                       // cut the portal into two portals, one on each side of the node plane
-                       PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints);
+       // 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];
+               if (!portal->numpoints)
+                       continue;
 
-                       if (!numfrontpoints)
-                       {
-                               if (side == 0)
-                                       AddPortalToNodes(portal, back, other_node);
-                               else
-                                       AddPortalToNodes(portal, other_node, back);
-                               continue;
-                       }
-                       if (!numbackpoints)
-                       {
-                               if (side == 0)
-                                       AddPortalToNodes(portal, front, other_node);
-                               else
-                                       AddPortalToNodes(portal, other_node, front);
-                               continue;
-                       }
+               other_node = portal->nodes[!side];
+               RemovePortalFromNodes(portal);
 
-                       // the portal is split
-                       splitportal = AllocPortal();
-                       temp = splitportal->chain;
-                       *splitportal = *portal;
-                       splitportal->chain = temp;
-                       for (i = 0;i < numbackpoints*3;i++)
-                               splitportal->points[i] = backpoints[i];
-                       splitportal->numpoints = numbackpoints;
-                       for (i = 0;i < numfrontpoints*3;i++)
-                               portal->points[i] = frontpoints[i];
-                       portal->numpoints = numfrontpoints;
+               // cut the portal into two portals, one on each side of the node plane
+               PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints);
 
+               if (!numfrontpoints)
+               {
+                       if (side == 0)
+                               AddPortalToNodes(portal, back, other_node);
+                       else
+                               AddPortalToNodes(portal, other_node, back);
+                       continue;
+               }
+               if (!numbackpoints)
+               {
                        if (side == 0)
-                       {
                                AddPortalToNodes(portal, front, other_node);
-                               AddPortalToNodes(splitportal, back, other_node);
-                       }
                        else
-                       {
                                AddPortalToNodes(portal, other_node, front);
-                               AddPortalToNodes(splitportal, other_node, back);
-                       }
+                       continue;
+               }
+
+               // the portal is split
+               splitportal = AllocPortal();
+               temp = splitportal->chain;
+               *splitportal = *portal;
+               splitportal->chain = temp;
+               for (i = 0;i < numbackpoints*3;i++)
+                       splitportal->points[i] = backpoints[i];
+               splitportal->numpoints = numbackpoints;
+               for (i = 0;i < numfrontpoints*3;i++)
+                       portal->points[i] = frontpoints[i];
+               portal->numpoints = numfrontpoints;
+
+               if (side == 0)
+               {
+                       AddPortalToNodes(portal, front, other_node);
+                       AddPortalToNodes(splitportal, back, other_node);
+               }
+               else
+               {
+                       AddPortalToNodes(portal, other_node, front);
+                       AddPortalToNodes(splitportal, other_node, back);
                }
        }
 
@@ -2722,62 +2809,16 @@ static void Mod_Q1BSP_MakePortals(void)
        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;
+       msurface_t *surface;
        memset(stylecounts, 0, sizeof(stylecounts));
        for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
+               surface = model->data_surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
-                       stylecounts[surf->styles[j]]++;
+                       stylecounts[surface->lightmapinfo->styles[j]]++;
        }
        totalcount = 0;
        model->brushq1.light_styles = 0;
@@ -2807,10 +2848,10 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        }
        for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
+               surface = model->data_surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
-                       if (surf->styles[j] != 255)
-                               *model->brushq1.light_styleupdatechains[remapstyles[surf->styles[j]]]++ = surf;
+                       if (surface->lightmapinfo->styles[j] != 255)
+                               *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
        }
        j = 0;
        for (i = 0;i < model->brushq1.light_styles;i++)
@@ -2866,9 +2907,9 @@ static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org,
 //of the given point.
 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
 {
-       int bytes = ((model->brush.num_leafs - 1) + 7) >> 3;
+       int bytes = model->brush.num_pvsclusterbytes;
        bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer || !Mod_Q1BSP_GetPVS(model, org))
+       if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
        {
                memset(pvsbuffer, 0xFF, bytes);
                return bytes;
@@ -2884,7 +2925,16 @@ static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, co
        const hull_t *hull;
 
        VectorSubtract(inmaxs, inmins, size);
-       if (cmodel->brush.ishlbsp)
+       if (cmodel->brush.ismcbsp)
+       {
+               if (size[0] < 3)
+                       hull = &cmodel->brushq1.hulls[0]; // 0x0x0
+               else if (size[2] < 48) // pick the nearest of 40 or 56
+                       hull = &cmodel->brushq1.hulls[2]; // 16x16x40
+               else
+                       hull = &cmodel->brushq1.hulls[1]; // 16x16x56
+       }
+       else if (cmodel->brush.ishlbsp)
        {
                if (size[0] < 3)
                        hull = &cmodel->brushq1.hulls[0]; // 0x0x0
@@ -2911,77 +2961,37 @@ static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, co
        VectorAdd(inmins, hull->clip_size, outmaxs);
 }
 
-/*
-void Mod_Q1BSP_RecursiveGetVisible(mnode_t *node, model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, mleaf_t *leaflist, int *numleafs, int maxsurfaces, msurface_t *surfacelist, int *numsurfaces, const qbyte *pvs)
-{
-       mleaf_t *leaf;
-       for (;;)
-       {
-               if (!BoxesOverlap(node->mins, node->maxs, mins, maxs))
-                       return;
-               if (!node->plane)
-                       break;
-               Mod_Q1BSP_RecursiveGetVisible(node->children[0], model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces, pvs);
-               node = node->children[1];
-       }
-       leaf = (mleaf_t *)node;
-       if ((pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
-       {
-               int leaffacenum;
-               msurface_t *surf;
-               if (maxleafs && *numleafs < maxleafs)
-                       leaflist[(*numleafs)++] = leaf;
-               if (maxsurfaces)
-               {
-                       for (leaffacenum = 0;leaffacenum < leaf->numleaffaces;leaffacenum++)
-                       {
-                               surf = model->brushq1.surfaces + leaf->firstleafface[leaffacenum];
-                               if (surf->shadowmark != shadowmarkcount)
-                               {
-                                       surf->shadowmark = shadowmarkcount;
-                                       if (BoxesOverlap(mins, maxs, surf->poly_mins, surf->poly_maxs) && ((surf->flags & SURF_PLANEBACK) ? PlaneDiff(point, surf->plane) < 0 : PlaneDiff(point, surf->plane) > 0) && *numsurfaces < maxsurfaces)
-                                               surfacelist[(*numsurfaces)++] = surf;
-                               }
-                       }
-               }
-       }
-}
-
-void Mod_Q1BSP_GetVisible(model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, mleaf_t *leaflist, int *numleafs, int maxsurfaces, msurface_t *surfacelist, int *numsurfaces)
-{
-       // FIXME: support portals
-       if (maxsurfaces)
-               *numsurfaces = 0;
-       if (maxleafs)
-               *numleafs = 0;
-       pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
-       Mod_Q1BSP_RecursiveGetVisible(ent->model->brush.data_nodes + ent->model->brushq1.firstclipnode, model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces);
-}
-*/
-
-extern void R_Q1BSP_DrawSky(entity_render_t *ent);
-extern void R_Q1BSP_Draw(entity_render_t *ent);
-extern void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer);
-extern void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist);
-extern void R_Q1BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist);
-void Mod_Q1BSP_Load(model_t *mod, void *buffer)
+void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i, j, k;
        dheader_t *header;
        dmodel_t *bm;
        mempool_t *mainmempool;
        float dist, modelyawradius, modelradius, *vec;
-       msurface_t *surf;
+       msurface_t *surface;
        int numshadowmeshtriangles;
 
        mod->type = mod_brushq1;
 
-       header = (dheader_t *)buffer;
+       if (!memcmp(buffer, "MCBSP", 5))
+       {
+               header = (dheader_t *)((unsigned char*)buffer + 5);
 
-       i = LittleLong(header->version);
-       if (i != BSPVERSION && i != 30)
-               Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife))", mod->name, i, BSPVERSION);
-       mod->brush.ishlbsp = i == 30;
+               i = LittleLong(header->version);
+               if (i != MCBSPVERSION)
+                       Host_Error("Mod_Q1BSP_Load: %s has wrong version number(MCBSP %i should be %i", mod->name, i, MCBSPVERSION);
+               mod->brush.ismcbsp = true;
+               mod->brush.ishlbsp = false;
+       }
+       else
+       {
+               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->brush.ishlbsp = i == 30;
+       }
 
        mod->soundfromcenter = true;
        mod->TraceBox = Mod_Q1BSP_TraceBox;
@@ -2990,14 +3000,19 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
        mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
        mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
+       mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
+       mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
        mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
        mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
        mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
        mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
-       mod->brushq1.PointInLeaf = Mod_Q1BSP_PointInLeaf;
+       mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
 
        if (loadmodel->isworldmodel)
+       {
                Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
+       }
 
 // swap all the lumps
        mod_base = (qbyte *)header;
@@ -3051,20 +3066,28 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
 
        // make a single combined shadow mesh to allow optimized shadow volume creation
        numshadowmeshtriangles = 0;
-       for (j = 0, surf = loadmodel->brushq1.surfaces;j < loadmodel->brushq1.numsurfaces;j++, surf++)
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
        {
-               surf->num_firstshadowmeshtriangle = numshadowmeshtriangles;
-               numshadowmeshtriangles += surf->mesh.num_triangles;
+               surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += surface->num_triangles;
        }
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
-       for (j = 0, surf = loadmodel->brushq1.surfaces;j < loadmodel->brushq1.numsurfaces;j++, surf++)
-               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surf->mesh.data_vertex3f, NULL, NULL, NULL, NULL, surf->mesh.num_triangles, surf->mesh.data_element3i);
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
+               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surface->groupmesh->data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle));
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
        Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
 
        if (loadmodel->brush.numsubmodels)
                loadmodel->brush.submodels = Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
 
+       if (loadmodel->isworldmodel)
+       {
+               // clear out any stale submodels or worldmodels lying around
+               // if we did this clear before now, an error might abort loading and
+               // leave things in a bad state
+               Mod_RemoveStaleWorldModels(loadmodel);
+       }
+
        // LordHavoc: to clear the fog around the original quake submodel code, I
        // will explain:
        // first of all, some background info on the submodels:
@@ -3130,6 +3153,7 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                mod->DrawSky = NULL;
                mod->Draw = R_Q1BSP_Draw;
                mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+               mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
                mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
                mod->DrawLight = R_Q1BSP_DrawLight;
                if (i != 0)
@@ -3137,6 +3161,8 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->brush.GetPVS = NULL;
                        mod->brush.FatPVS = NULL;
                        mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.BoxTouchingLeafPVS = NULL;
+                       mod->brush.BoxTouchingVisibleLeafs = NULL;
                        mod->brush.LightPoint = NULL;
                        mod->brush.AmbientSoundLevelsForPoint = NULL;
                }
@@ -3148,16 +3174,13 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
                        modelyawradius = 0;
                        modelradius = 0;
-                       for (j = 0, surf = &mod->brushq1.surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
+                       for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
                        {
                                // we only need to have a drawsky function if it is used(usually only on world model)
-                               if (surf->texinfo->texture->flags & SURF_DRAWSKY)
+                               if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
                                        mod->DrawSky = R_Q1BSP_DrawSky;
-                               // LordHavoc: submodels always clip, even if water
-                               if (mod->brush.numsubmodels - 1)
-                                       surf->flags |= SURF_SOLIDCLIP;
                                // calculate bounding shapes
-                               for (k = 0, vec = surf->mesh.data_vertex3f;k < surf->mesh.num_vertices;k++, vec += 3)
+                               for (k = 0, vec = (surface->groupmesh->data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
                                {
                                        if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
                                        if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
@@ -3188,8 +3211,6 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
                        Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
                }
-               Mod_Q1BSP_BuildSurfaceNeighbors(mod->brushq1.surfaces + mod->firstmodelsurface, mod->nummodelsurfaces, loadmodel->mempool);
-
                //mod->brushq1.num_visleafs = bm->visleafs;
        }
 
@@ -3198,7 +3219,7 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        //Mod_Q1BSP_ProcessLightList();
 
        if (developer.integer)
-               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->brushq1.numsurfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brushq1.submodels[i].visleafs, loadmodel->brush.num_portals);
+               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals);
 }
 
 static void Mod_Q2BSP_LoadEntities(lump_t *l)
@@ -3579,7 +3600,7 @@ static void Mod_Q2BSP_LoadModels(lump_t *l)
 */
 }
 
-void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
+void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i;
        q2dheader_t *header;
@@ -3594,8 +3615,12 @@ void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
        if (i != Q2BSPVERSION)
                Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
        mod->brush.ishlbsp = false;
+       mod->brush.ismcbsp = false;
        if (loadmodel->isworldmodel)
+       {
                Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
+       }
 
        mod_base = (qbyte *)header;
 
@@ -3673,7 +3698,7 @@ static void Mod_Q3BSP_LoadEntities(lump_t *l)
 static void Mod_Q3BSP_LoadTextures(lump_t *l)
 {
        q3dtexture_t *in;
-       q3mtexture_t *out;
+       texture_t *out;
        int i, count;
        int j, c;
        fssearch_t *search;
@@ -3691,12 +3716,11 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_textures = out;
-       loadmodel->brushq3.num_textures = count;
+       loadmodel->data_textures = out;
+       loadmodel->num_textures = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
-               out->number = i;
                strlcpy (out->name, in->name, sizeof (out->name));
                out->surfaceflags = LittleLong(in->surfaceflags);
                out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
@@ -3753,7 +3777,7 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                        }
                                                                        if (passnumber == 0 && numparameters >= 1)
                                                                        {
-                                                                               if (!strcasecmp(parameter[0], "blendfunc"))
+                                                                               if (!strcasecmp(parameter[0], "blendfunc") && (flags & Q3SURFACEPARM_TRANS))
                                                                                {
                                                                                        if (numparameters == 2 && !strcasecmp(parameter[1], "add"))
                                                                                                flags2 |= Q3TEXTUREFLAG_ADDITIVE;
@@ -3766,9 +3790,9 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                                        strlcpy(firstpasstexturename, parameter[1], sizeof(firstpasstexturename));
                                                                                else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
                                                                                        strlcpy(firstpasstexturename, parameter[2], sizeof(firstpasstexturename));
+                                                                               else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
+                                                                                       flags2 |= Q3TEXTUREFLAG_ALPHATEST;
                                                                        }
-                                                                       if (!strcasecmp(parameter[0], "alphafunc"))
-                                                                               flags2 |= Q3TEXTUREFLAG_ALPHATEST;
                                                                        // break out a level if it was }
                                                                        if (!strcasecmp(com_token, "}"))
                                                                                break;
@@ -3881,19 +3905,39 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                                                                        flags2 |= Q3TEXTUREFLAG_AUTOSPRITE2;
                                                        }
                                                }
-                                               // force transparent render path for a number of odd
-                                               // shader effects to avoid bogging down the normal
-                                               // render path unnecessarily
-                                               if (flags2 & (Q3TEXTUREFLAG_ADDITIVE | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2 | Q3TEXTUREFLAG_ALPHATEST))
-                                                       flags |= Q3SURFACEPARM_TRANS;
                                                // add shader to list (shadername and flags)
                                                // actually here we just poke into the texture settings
-                                               for (j = 0, out = loadmodel->brushq3.data_textures;j < loadmodel->brushq3.num_textures;j++, out++)
+                                               for (j = 0, out = loadmodel->data_textures;j < loadmodel->num_textures;j++, out++)
                                                {
                                                        if (!strcasecmp(out->name, shadername))
                                                        {
                                                                out->surfaceparms = flags;
                                                                out->textureflags = flags2;
+                                                               out->basematerialflags = 0;
+                                                               if (out->surfaceparms & Q3SURFACEPARM_NODRAW)
+                                                                       out->basematerialflags |= MATERIALFLAG_NODRAW;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_SKY)
+                                                                       out->basematerialflags |= MATERIALFLAG_SKY;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_LAVA)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_SLIME)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_WATER)
+                                                                       out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
+                                                               else
+                                                                       out->basematerialflags |= MATERIALFLAG_WALL;
+                                                               if (out->textureflags & Q3TEXTUREFLAG_ALPHATEST)
+                                                               {
+                                                                       // FIXME: support alpha test?
+                                                                       out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
+                                                               }
+                                                               else if (out->surfaceparms & Q3SURFACEPARM_TRANS)
+                                                               {
+                                                                       if (out->textureflags & Q3TEXTUREFLAG_ADDITIVE)
+                                                                               out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_TRANSPARENT;
+                                                                       else
+                                                                               out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
+                                                               }
                                                                strlcpy(out->firstpasstexturename, firstpasstexturename, sizeof(out->firstpasstexturename));
                                                                if ((flags & Q3SURFACEPARM_SKY) && sky[0])
                                                                {
@@ -3916,13 +3960,19 @@ parseerror:
        }
 
        c = 0;
-       for (j = 0, out = loadmodel->brushq3.data_textures;j < loadmodel->brushq3.num_textures;j++, out++)
+       for (j = 0, out = loadmodel->data_textures;j < loadmodel->num_textures;j++, out++)
        {
                if (out->surfaceparms == -1)
                {
                        c++;
                        Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
                        out->surfaceparms = 0;
+                       if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
+                               out->basematerialflags |= MATERIALFLAG_NODRAW;
+                       else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
+                               out->basematerialflags |= MATERIALFLAG_SKY;
+                       else
+                               out->basematerialflags |= MATERIALFLAG_WALL;
                        // these are defaults
                        //if (!strncmp(out->name, "textures/skies/", 15))
                        //      out->surfaceparms |= Q3SURFACEPARM_SKY;
@@ -3932,9 +3982,12 @@ parseerror:
                        //if (R_TextureHasAlpha(out->skin.base))
                        //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
                }
-               if (!Mod_LoadSkinFrame(&out->skin, out->name, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true, true))
-                       if (!Mod_LoadSkinFrame(&out->skin, out->firstpasstexturename, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true, true))
-                               Con_Printf("%s: texture loading for shader \"%s\" failed (first layer \"%s\" not found either)\n", loadmodel->name, out->name, out->firstpasstexturename);
+               if (!Mod_LoadSkinFrame(&out->skin, out->name, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
+                       if (!Mod_LoadSkinFrame(&out->skin, out->firstpasstexturename, (((out->textureflags & Q3TEXTUREFLAG_NOMIPMAPS) || (out->surfaceparms & Q3SURFACEPARM_NOMIPMAPS)) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (out->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
+                               if (cls.state != ca_dedicated)
+                                       Con_Printf("%s: texture loading for shader \"%s\" failed (first layer \"%s\" not found either)\n", loadmodel->name, out->name, out->firstpasstexturename);
+               // no animation
+               out->currentframe = out;
        }
        if (c)
                Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
@@ -3957,10 +4010,10 @@ static void Mod_Q3BSP_LoadPlanes(lump_t *l)
 
        for (i = 0;i < count;i++, in++, out++)
        {
-               out->normal[0] = LittleLong(in->normal[0]);
-               out->normal[1] = LittleLong(in->normal[1]);
-               out->normal[2] = LittleLong(in->normal[2]);
-               out->dist = LittleLong(in->dist);
+               out->normal[0] = LittleFloat(in->normal[0]);
+               out->normal[1] = LittleFloat(in->normal[1]);
+               out->normal[2] = LittleFloat(in->normal[2]);
+               out->dist = LittleFloat(in->dist);
                PlaneClassify(out);
        }
 }
@@ -3977,8 +4030,8 @@ static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_brushsides = out;
-       loadmodel->brushq3.num_brushsides = count;
+       loadmodel->brush.data_brushsides = out;
+       loadmodel->brush.num_brushsides = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
@@ -3987,9 +4040,9 @@ static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
                        Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)\n", n, loadmodel->brush.num_planes);
                out->plane = loadmodel->brush.data_planes + n;
                n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
-               out->texture = loadmodel->brushq3.data_textures + n;
+               if (n < 0 || n >= loadmodel->num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)\n", n, loadmodel->num_textures);
+               out->texture = loadmodel->data_textures + n;
        }
 }
 
@@ -4006,8 +4059,8 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_brushes = out;
-       loadmodel->brushq3.num_brushes = count;
+       loadmodel->brush.data_brushes = out;
+       loadmodel->brush.num_brushes = count;
 
        maxplanes = 0;
        planes = NULL;
@@ -4016,14 +4069,14 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        {
                n = LittleLong(in->firstbrushside);
                c = LittleLong(in->numbrushsides);
-               if (n < 0 || n + c > loadmodel->brushq3.num_brushsides)
-                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)\n", n, n + c, loadmodel->brushq3.num_brushsides);
-               out->firstbrushside = loadmodel->brushq3.data_brushsides + n;
+               if (n < 0 || n + c > loadmodel->brush.num_brushsides)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)\n", n, n + c, loadmodel->brush.num_brushsides);
+               out->firstbrushside = loadmodel->brush.data_brushsides + n;
                out->numbrushsides = c;
                n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)\n", n, loadmodel->brushq3.num_textures);
-               out->texture = loadmodel->brushq3.data_textures + n;
+               if (n < 0 || n >= loadmodel->num_textures)
+                       Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)\n", n, loadmodel->num_textures);
+               out->texture = loadmodel->data_textures + n;
 
                // make a list of mplane_t structs to construct a colbrush from
                if (maxplanes < out->numbrushsides)
@@ -4048,7 +4101,7 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
 static void Mod_Q3BSP_LoadEffects(lump_t *l)
 {
        q3deffect_t *in;
-       q3meffect_t *out;
+       q3deffect_t *out;
        int i, n, count;
 
        in = (void *)(mod_base + l->fileofs);
@@ -4064,9 +4117,12 @@ static void Mod_Q3BSP_LoadEffects(lump_t *l)
        {
                strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
                n = LittleLong(in->brushindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
-               out->brush = loadmodel->brushq3.data_brushes + n;
+               if (n >= loadmodel->brush.num_brushes)
+               {
+                       Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
+                       n = -1;
+               }
+               out->brushindex = n;
                out->unknown = LittleLong(in->unknown);
        }
 }
@@ -4152,7 +4208,7 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
 static void Mod_Q3BSP_LoadFaces(lump_t *l)
 {
        q3dface_t *in, *oldin;
-       q3msurface_t *out, *oldout;
+       msurface_t *out, *oldout;
        int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshnum, meshvertices, meshtriangles, numvertices, numtriangles;
        //int *originalelement3i;
        //int *originalneighbor3i;
@@ -4172,8 +4228,8 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brushq3.data_faces = out;
-       loadmodel->brushq3.num_faces = count;
+       loadmodel->data_surfaces = out;
+       loadmodel->num_surfaces = count;
 
        i = 0;
        for (meshnum = 0;i < count;meshnum++)
@@ -4197,12 +4253,12 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                        }
 
                        n = LittleLong(in->textureindex);
-                       if (n < 0 || n >= loadmodel->brushq3.num_textures)
+                       if (n < 0 || n >= loadmodel->num_textures)
                        {
-                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->brushq3.num_textures);
+                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
                                continue;
                        }
-                       out->texture = loadmodel->brushq3.data_textures + n;
+                       out->texture = loadmodel->data_textures + n;
                        n = LittleLong(in->effectindex);
                        if (n < -1 || n >= loadmodel->brushq3.num_effects)
                        {
@@ -4289,58 +4345,52 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                // don't render it
                                continue;
                        }
-                       out->mesh.num_vertices = numvertices;
-                       out->mesh.num_triangles = numtriangles;
-                       if (meshvertices + out->mesh.num_vertices > 65536)
+                       out->num_vertices = numvertices;
+                       out->num_triangles = numtriangles;
+                       if (meshvertices + out->num_vertices > 65536)
                                break;
-                       meshvertices += out->mesh.num_vertices;
-                       meshtriangles += out->mesh.num_triangles;
+                       meshvertices += out->num_vertices;
+                       meshtriangles += out->num_triangles;
                }
 
                i = oldi;
                in = oldin;
                out = oldout;
-               mesh = tempmeshlist[meshnum] = Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, 0, 0, false, false, true);
+               mesh = tempmeshlist[meshnum] = Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
                meshvertices = 0;
                meshtriangles = 0;
-               for (;i < count && meshvertices + out->mesh.num_vertices <= mesh->num_vertices;i++, in++, out++)
+               for (;i < count && meshvertices + out->num_vertices <= mesh->num_vertices;i++, in++, out++)
                {
-                       if (out->mesh.num_vertices < 3 || out->mesh.num_triangles < 1)
+                       if (out->num_vertices < 3 || out->num_triangles < 1)
                                continue;
 
                        type = LittleLong(in->type);
                        firstvertex = LittleLong(in->firstvertex);
                        firstelement = LittleLong(in->firstelement);
-                       out->mesh.data_vertex3f = mesh->data_vertex3f + meshvertices * 3;
-                       out->mesh.data_svector3f = mesh->data_svector3f + meshvertices * 3;
-                       out->mesh.data_tvector3f = mesh->data_tvector3f + meshvertices * 3;
-                       out->mesh.data_normal3f = mesh->data_normal3f + meshvertices * 3;
-                       out->mesh.data_texcoordtexture2f = mesh->data_texcoordtexture2f + meshvertices * 2;
-                       out->mesh.data_texcoordlightmap2f = mesh->data_texcoordlightmap2f + meshvertices * 2;
-                       out->mesh.data_lightmapcolor4f = mesh->data_lightmapcolor4f + meshvertices * 4;
-                       out->mesh.data_element3i = mesh->data_element3i + meshtriangles * 3;
-                       out->mesh.data_neighbor3i = mesh->data_neighbor3i + meshtriangles * 3;
+                       out->groupmesh = mesh;
+                       out->num_firstvertex = meshvertices;
+                       out->num_firsttriangle = meshtriangles;
                        switch(type)
                        {
                        case Q3FACETYPE_POLYGON:
                        case Q3FACETYPE_MESH:
                                // no processing necessary
-                               for (j = 0;j < out->mesh.num_vertices;j++)
+                               for (j = 0;j < out->num_vertices;j++)
                                {
-                                       out->mesh.data_vertex3f[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
-                                       out->mesh.data_vertex3f[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
-                                       out->mesh.data_vertex3f[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
-                                       out->mesh.data_texcoordtexture2f[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
-                                       out->mesh.data_texcoordtexture2f[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
-                                       out->mesh.data_texcoordlightmap2f[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
-                                       out->mesh.data_texcoordlightmap2f[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
-                                       out->mesh.data_lightmapcolor4f[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
-                                       out->mesh.data_lightmapcolor4f[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
-                                       out->mesh.data_lightmapcolor4f[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
-                                       out->mesh.data_lightmapcolor4f[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
+                                       (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
+                                       (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
+                                       (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
+                                       (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
+                                       (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
+                                       (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
                                }
-                               for (j = 0;j < out->mesh.num_triangles*3;j++)
-                                       out->mesh.data_element3i[j] = loadmodel->brushq3.data_element3i[firstelement + j];
+                               for (j = 0;j < out->num_triangles*3;j++)
+                                       (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
                                break;
                        case Q3FACETYPE_PATCH:
                                patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
@@ -4373,18 +4423,18 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                type = Q3FACETYPE_MESH;
                                // generate geometry
                                // (note: normals are skipped because they get recalculated)
-                               Q3PatchTesselateFloat(3, sizeof(float[3]), out->mesh.data_vertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
-                               Q3PatchTesselateFloat(2, sizeof(float[2]), out->mesh.data_texcoordtexture2f, patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
-                               Q3PatchTesselateFloat(2, sizeof(float[2]), out->mesh.data_texcoordlightmap2f, patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
-                               Q3PatchTesselateFloat(4, sizeof(float[4]), out->mesh.data_lightmapcolor4f, patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
-                               Q3PatchTriangleElements(out->mesh.data_element3i, finalwidth, finalheight);
-                               out->mesh.num_triangles = Mod_RemoveDegenerateTriangles(out->mesh.num_triangles, out->mesh.data_element3i, out->mesh.data_element3i, out->mesh.data_vertex3f);
+                               Q3PatchTesselateFloat(3, sizeof(float[3]), (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
+                               Q3PatchTesselateFloat(2, sizeof(float[2]), (out->groupmesh->data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
+                               Q3PatchTesselateFloat(2, sizeof(float[2]), (out->groupmesh->data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
+                               Q3PatchTesselateFloat(4, sizeof(float[4]), (out->groupmesh->data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
+                               Q3PatchTriangleElements((out->groupmesh->data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
+                               out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), out->groupmesh->data_vertex3f);
                                if (developer.integer >= 2)
                                {
-                                       if (out->mesh.num_triangles < finaltriangles)
-                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->mesh.num_vertices, finaltriangles, finaltriangles - out->mesh.num_triangles, out->mesh.num_triangles);
+                                       if (out->num_triangles < finaltriangles)
+                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
                                        else
-                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->mesh.num_vertices, out->mesh.num_triangles);
+                                               Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
                                }
                                // q3map does not put in collision brushes for curves... ugh
                                // build the lower quality collision geometry
@@ -4409,53 +4459,51 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                finalvertices = finalwidth * finalheight;
                                finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
 
-                               out->mesh.data_collisionvertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
-                               out->mesh.data_collisionelement3i = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
-                               out->mesh.num_collisionvertices = finalvertices;
-                               out->mesh.num_collisiontriangles = finaltriangles;
-                               Q3PatchTesselateFloat(3, sizeof(float[3]), out->mesh.data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
-                               Q3PatchTriangleElements(out->mesh.data_collisionelement3i, finalwidth, finalheight);
+                               out->data_collisionvertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
+                               out->data_collisionelement3i = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
+                               out->num_collisionvertices = finalvertices;
+                               out->num_collisiontriangles = finaltriangles;
+                               Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
+                               Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
 
-                               //Mod_SnapVertices(3, out->mesh.num_vertices, out->mesh.data_vertex3f, 0.25);
-                               Mod_SnapVertices(3, out->mesh.num_collisionvertices, out->mesh.data_collisionvertex3f, 1);
+                               //Mod_SnapVertices(3, out->num_vertices, (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), 0.25);
+                               Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
 
-                               oldnumtriangles = out->mesh.num_triangles;
-                               oldnumtriangles2 = out->mesh.num_collisiontriangles;
-                               out->mesh.num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->mesh.num_collisiontriangles, out->mesh.data_collisionelement3i, out->mesh.data_collisionelement3i, out->mesh.data_collisionvertex3f);
+                               oldnumtriangles = out->num_triangles;
+                               oldnumtriangles2 = out->num_collisiontriangles;
+                               out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
                                if (developer.integer)
-                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->mesh.num_vertices, out->mesh.num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->mesh.num_triangles, oldnumtriangles2 - out->mesh.num_collisiontriangles);
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
                                break;
                        default:
                                break;
                        }
-                       meshvertices += out->mesh.num_vertices;
-                       meshtriangles += out->mesh.num_triangles;
-                       for (j = 0, invalidelements = 0;j < out->mesh.num_triangles * 3;j++)
-                               if (out->mesh.data_element3i[j] < 0 || out->mesh.data_element3i[j] >= out->mesh.num_vertices)
+                       meshvertices += out->num_vertices;
+                       meshtriangles += out->num_triangles;
+                       for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
+                               if ((out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
                                        invalidelements++;
                        if (invalidelements)
                        {
-                               Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->mesh.num_vertices, firstelement, out->mesh.num_triangles * 3);
-                               for (j = 0;j < out->mesh.num_triangles * 3;j++)
+                               Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
+                               for (j = 0;j < out->num_triangles * 3;j++)
                                {
-                                       Con_Printf(" %i", out->mesh.data_element3i[j]);
-                                       if (out->mesh.data_element3i[j] < 0 || out->mesh.data_element3i[j] >= out->mesh.num_vertices)
-                                               out->mesh.data_element3i[j] = 0;
+                                       Con_Printf(" %i", (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
+                                       if ((out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
+                                               (out->groupmesh->data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
                                }
                                Con_Print("\n");
                        }
-                       // for shadow volumes
-                       Mod_BuildTriangleNeighbors(out->mesh.data_neighbor3i, out->mesh.data_element3i, out->mesh.num_triangles);
                        // for per pixel lighting
-                       Mod_BuildTextureVectorsAndNormals(out->mesh.num_vertices, out->mesh.num_triangles, out->mesh.data_vertex3f, out->mesh.data_texcoordtexture2f, out->mesh.data_element3i, out->mesh.data_svector3f, out->mesh.data_tvector3f, out->mesh.data_normal3f);
+                       Mod_BuildTextureVectorsAndNormals(out->num_firstvertex, out->num_vertices, out->num_triangles, out->groupmesh->data_vertex3f, out->groupmesh->data_texcoordtexture2f, (out->groupmesh->data_element3i + 3 * out->num_firsttriangle), out->groupmesh->data_svector3f, out->groupmesh->data_tvector3f, out->groupmesh->data_normal3f, true);
                        // calculate a bounding box
                        VectorClear(out->mins);
                        VectorClear(out->maxs);
-                       if (out->mesh.num_vertices)
+                       if (out->num_vertices)
                        {
-                               VectorCopy(out->mesh.data_vertex3f, out->mins);
-                               VectorCopy(out->mesh.data_vertex3f, out->maxs);
-                               for (j = 1, v = out->mesh.data_vertex3f + 3;j < out->mesh.num_vertices;j++, v += 3)
+                               VectorCopy((out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), out->mins);
+                               VectorCopy((out->groupmesh->data_vertex3f + 3 * out->num_firstvertex), out->maxs);
+                               for (j = 1, v = (out->groupmesh->data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
                                {
                                        out->mins[0] = min(out->mins[0], v[0]);
                                        out->maxs[0] = max(out->maxs[0], v[0]);
@@ -4471,6 +4519,11 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                out->maxs[1] += 1.0f;
                                out->maxs[2] += 1.0f;
                        }
+                       // set lightmap styles for consistency with q1bsp
+                       //out->lightmapinfo->styles[0] = 0;
+                       //out->lightmapinfo->styles[1] = 255;
+                       //out->lightmapinfo->styles[2] = 255;
+                       //out->lightmapinfo->styles[3] = 255;
                }
        }
 
@@ -4498,7 +4551,7 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
 static void Mod_Q3BSP_LoadModels(lump_t *l)
 {
        q3dmodel_t *in;
-       q3mmodel_t *out;
+       q3dmodel_t *out;
        int i, j, n, c, count;
 
        in = (void *)(mod_base + l->fileofs);
@@ -4519,15 +4572,15 @@ static void Mod_Q3BSP_LoadModels(lump_t *l)
                }
                n = LittleLong(in->firstface);
                c = LittleLong(in->numfaces);
-               if (n < 0 || n + c > loadmodel->brushq3.num_faces)
-                       Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)\n", n, n + c, loadmodel->brushq3.num_faces);
-               out->firstface = loadmodel->brushq3.data_faces + n;
+               if (n < 0 || n + c > loadmodel->num_surfaces)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)\n", n, n + c, loadmodel->num_surfaces);
+               out->firstface = n;
                out->numfaces = c;
                n = LittleLong(in->firstbrush);
                c = LittleLong(in->numbrushes);
-               if (n < 0 || n + c > loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)\n", n, n + c, loadmodel->brushq3.num_brushes);
-               out->firstbrush = loadmodel->brushq3.data_brushes + n;
+               if (n < 0 || n + c > loadmodel->brush.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)\n", n, n + c, loadmodel->brush.num_brushes);
+               out->firstbrush = n;
                out->numbrushes = c;
        }
 }
@@ -4550,8 +4603,8 @@ static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(*in);
-               if (n < 0 || n >= loadmodel->brushq3.num_brushes)
-                       Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)\n", n, loadmodel->brushq3.num_brushes);
+               if (n < 0 || n >= loadmodel->brush.num_brushes)
+                       Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)\n", n, loadmodel->brush.num_brushes);
                *out = n;
        }
 }
@@ -4568,14 +4621,14 @@ static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
-       loadmodel->brush.data_leaffaces = out;
-       loadmodel->brush.num_leaffaces = count;
+       loadmodel->brush.data_leafsurfaces = out;
+       loadmodel->brush.num_leafsurfaces = count;
 
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(*in);
-               if (n < 0 || n >= loadmodel->brushq3.num_faces)
-                       Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->brushq3.num_faces);
+               if (n < 0 || n >= loadmodel->num_surfaces)
+                       Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->num_surfaces);
                *out = n;
        }
 }
@@ -4609,10 +4662,10 @@ static void Mod_Q3BSP_LoadLeafs(lump_t *l)
                }
                n = LittleLong(in->firstleafface);
                c = LittleLong(in->numleaffaces);
-               if (n < 0 || n + c > loadmodel->brush.num_leaffaces)
-                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafface range %i : %i (%i leaffaces)\n", n, n + c, loadmodel->brush.num_leaffaces);
-               out->firstleafface = loadmodel->brush.data_leaffaces + n;
-               out->numleaffaces = c;
+               if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
+                       Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)\n", n, n + c, loadmodel->brush.num_leafsurfaces);
+               out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
+               out->numleafsurfaces = c;
                n = LittleLong(in->firstleafbrush);
                c = LittleLong(in->numleafbrushes);
                if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
@@ -4622,18 +4675,6 @@ static void Mod_Q3BSP_LoadLeafs(lump_t *l)
        }
 }
 
-static void Mod_Q3BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
-{
-       if (node->parent)
-               Host_Error("Mod_Q3BSP_LoadNodes_RecursiveSetParent: runaway recursion\n");
-       node->parent = parent;
-       if (node->plane)
-       {
-               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
-               Mod_Q3BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
-       }
-}
-
 static void Mod_Q3BSP_LoadNodes(lump_t *l)
 {
        q3dnode_t *in;
@@ -4682,7 +4723,7 @@ static void Mod_Q3BSP_LoadNodes(lump_t *l)
        }
 
        // set the parent pointers
-       Mod_Q3BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
+       Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
 }
 
 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
@@ -4707,40 +4748,22 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
        loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
        count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
+       Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
+       Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
+
+       // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
        if (l->filelen)
        {
                if (l->filelen < count * (int)sizeof(*in))
                        Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)\n", l->filelen, count * sizeof(*in), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
                if (l->filelen != count * (int)sizeof(*in))
                        Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", count * sizeof(*in), l->filelen);
-       }
-
-       out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
-       loadmodel->brushq3.data_lightgrid = out;
-       loadmodel->brushq3.num_lightgrid = count;
-
-       // no swapping or validation necessary
-       if (l->filelen)
+               out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
+               loadmodel->brushq3.data_lightgrid = out;
+               loadmodel->brushq3.num_lightgrid = count;
+               // no swapping or validation necessary
                memcpy(out, in, count * (int)sizeof(*out));
-       else
-       {
-               // no data, fill with white
-               int i;
-               for (i = 0;i < count;i++)
-               {
-                       out[i].ambientrgb[0] = 128;
-                       out[i].ambientrgb[1] = 128;
-                       out[i].ambientrgb[2] = 128;
-                       out[i].diffusergb[0] = 0;
-                       out[i].diffusergb[1] = 0;
-                       out[i].diffusergb[2] = 0;
-                       out[i].diffusepitch = 0;
-                       out[i].diffuseyaw = 0;
-               }
        }
-
-       Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
-       Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
 }
 
 static void Mod_Q3BSP_LoadPVS(lump_t *l)
@@ -4781,18 +4804,11 @@ static void Mod_Q3BSP_LoadPVS(lump_t *l)
        memcpy(loadmodel->brush.data_pvsclusters, (qbyte *)(in + 1), totalchains);
 }
 
-static void Mod_Q3BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, vec_t radius)
-{
-       // FIXME: finish this code
-       VectorCopy(in, out);
-}
-
 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
 {
        int i, j, k, index[3];
        float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
        q3dlightgrid_t *a, *s;
-       // FIXME: write this
        if (!model->brushq3.num_lightgrid)
        {
                ambientcolor[0] = 1;
@@ -4857,7 +4873,7 @@ static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model
        leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = model->brushq3.data_brushes[leaf->firstleafbrush[i]].colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
@@ -4872,7 +4888,7 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model,
        int i, startside, endside;
        float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
        mleaf_t *leaf;
-       q3msurface_t *face;
+       msurface_t *surface;
        colbrushf_t *brush;
        if (startfrac > trace->realfraction)
                return;
@@ -4922,7 +4938,7 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model,
        leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = model->brushq3.data_brushes[leaf->firstleafbrush[i]].colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
@@ -4935,13 +4951,13 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model,
        if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
        {
                // line trace the curves
-               for (i = 0;i < leaf->numleaffaces;i++)
+               for (i = 0;i < leaf->numleafsurfaces;i++)
                {
-                       face = model->brushq3.data_faces + leaf->firstleafface[i];
-                       if (face->mesh.num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       surface = model->data_surfaces + leaf->firstleafsurface[i];
+                       if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
                        {
-                               face->collisionmarkframe = markframe;
-                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, face->mesh.num_collisiontriangles, face->mesh.data_collisionelement3i, face->mesh.data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               surface->collisionmarkframe = markframe;
+                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                                if (startfrac > trace->realfraction)
                                        return;
                        }
@@ -4956,7 +4972,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, model_t *model
        float nodesegmentmins[3], nodesegmentmaxs[3];
        mleaf_t *leaf;
        colbrushf_t *brush;
-       q3msurface_t *face;
+       msurface_t *surface;
        /*
                // find which nodes the line is in and recurse for them
                while (node->plane)
@@ -5306,7 +5322,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, model_t *model
        leaf = (mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
        {
-               brush = model->brushq3.data_brushes[leaf->firstleafbrush[i]].colbrushf;
+               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
                if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
                {
                        brush->markframe = markframe;
@@ -5315,13 +5331,13 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, model_t *model
        }
        if (mod_q3bsp_curves_collisions.integer)
        {
-               for (i = 0;i < leaf->numleaffaces;i++)
+               for (i = 0;i < leaf->numleafsurfaces;i++)
                {
-                       face = model->brushq3.data_faces + leaf->firstleafface[i];
-                       if (face->mesh.num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       surface = model->data_surfaces + leaf->firstleafsurface[i];
+                       if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
                        {
-                               face->collisionmarkframe = markframe;
-                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->mesh.num_collisiontriangles, face->mesh.data_collisionelement3i, face->mesh.data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               surface->collisionmarkframe = markframe;
+                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                        }
                }
        }
@@ -5334,7 +5350,8 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
        colbrushf_t *thisbrush_start, *thisbrush_end;
        matrix4x4_t startmatrix, endmatrix;
        static int markframe = 0;
-       q3msurface_t *face;
+       msurface_t *surface;
+       q3mbrush_t *brush;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->realfraction = 1;
@@ -5354,9 +5371,9 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                        // point trace
                        if (model->brush.submodel)
                        {
-                               for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numbrushes;i++)
-                                       if (model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf)
-                                               Collision_TracePointBrushFloat(trace, boxstartmins, model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf);
+                               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                                       if (brush->colbrushf)
+                                               Collision_TracePointBrushFloat(trace, boxstartmins, brush->colbrushf);
                        }
                        else
                                Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, boxstartmins, ++markframe);
@@ -5366,18 +5383,13 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                        // line trace
                        if (model->brush.submodel)
                        {
-                               for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numbrushes;i++)
-                                       if (model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf)
-                                               Collision_TraceLineBrushFloat(trace, boxstartmins, boxendmins, model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf, model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf);
+                               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                                       if (brush->colbrushf)
+                                               Collision_TraceLineBrushFloat(trace, boxstartmins, boxendmins, brush->colbrushf, brush->colbrushf);
                                if (mod_q3bsp_curves_collisions.integer)
-                               {
-                                       for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numfaces;i++)
-                                       {
-                                               face = model->brushq3.data_models[model->brush.submodel].firstface + i;
-                                               if (face->mesh.num_collisiontriangles)
-                                                       Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, face->mesh.num_collisiontriangles, face->mesh.data_collisionelement3i, face->mesh.data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
-                                       }
-                               }
+                                       for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
+                                               if (surface->num_collisiontriangles)
+                                                       Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                        }
                        else
                                Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, boxstartmins, boxendmins, 0, 1, boxstartmins, boxendmins, ++markframe, segmentmins, segmentmaxs);
@@ -5390,137 +5402,19 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                thisbrush_end = Collision_BrushForBox(&endmatrix, boxendmins, boxendmaxs);
                if (model->brush.submodel)
                {
-                       for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numbrushes;i++)
-                               if (model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf)
-                                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf, model->brushq3.data_models[model->brush.submodel].firstbrush[i].colbrushf);
+                       for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
+                               if (brush->colbrushf)
+                                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
                        if (mod_q3bsp_curves_collisions.integer)
-                       {
-                               for (i = 0;i < model->brushq3.data_models[model->brush.submodel].numfaces;i++)
-                               {
-                                       face = model->brushq3.data_models[model->brush.submodel].firstface + i;
-                                       if (face->mesh.num_collisiontriangles)
-                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->mesh.num_collisiontriangles, face->mesh.data_collisionelement3i, face->mesh.data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
-                               }
-                       }
+                               for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
+                                       if (surface->num_collisiontriangles)
+                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, segmentmins, segmentmaxs);
                }
                else
                        Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
        }
 }
 
-static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3_t mins, const vec3_t maxs)
-{
-       int clusterindex, side, nodestackindex = 0;
-       mnode_t *node, *nodestack[1024];
-       node = model->brush.data_nodes;
-       if (!model->brush.num_pvsclusters)
-               return true;
-       for (;;)
-       {
-               if (node->plane)
-               {
-                       // node - recurse down the BSP tree
-                       side = BoxOnPlaneSide(mins, maxs, node->plane) - 1;
-                       if (side < 2)
-                       {
-                               // box is on one side of plane, take that path
-                               node = node->children[side];
-                       }
-                       else
-                       {
-                               // box crosses plane, take one path and remember the other
-                               if (nodestackindex < 1024)
-                                       nodestack[nodestackindex++] = node->children[0];
-                               node = node->children[1];
-                       }
-               }
-               else
-               {
-                       // leaf - check cluster bit
-                       clusterindex = ((mleaf_t *)node)->clusterindex;
-#if 0
-                       if (clusterindex >= model->brush.num_pvsclusters)
-                       {
-                               Con_Printf("%i >= %i\n", clusterindex, model->brush.num_pvsclusters);
-                               return true;
-                       }
-#endif
-                       if (CHECKPVSBIT(pvs, clusterindex))
-                       {
-                               // it is visible, return immediately with the news
-                               return true;
-                       }
-                       else
-                       {
-                               // nothing to see here, try another path we didn't take earlier
-                               if (nodestackindex == 0)
-                                       break;
-                               node = nodestack[--nodestackindex];
-                       }
-               }
-       }
-       // it is not visible
-       return false;
-}
-
-//Returns PVS data for a given point
-//(note: can return NULL)
-static qbyte *Mod_Q3BSP_GetPVS(model_t *model, const vec3_t p)
-{
-       mnode_t *node;
-       Mod_CheckLoaded(model);
-       node = model->brush.data_nodes;
-       while (node->plane)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
-       if (((mleaf_t *)node)->clusterindex >= 0)
-               return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
-       else
-               return NULL;
-}
-
-static void Mod_Q3BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, mnode_t *node)
-{
-       while (node->plane)
-       {
-               float d = PlaneDiff(org, node->plane);
-               if (d > radius)
-                       node = node->children[0];
-               else if (d < -radius)
-                       node = node->children[1];
-               else
-               {
-                       // go down both sides
-                       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
-                       node = node->children[1];
-               }
-       }
-       // if this leaf is in a cluster, accumulate the pvs bits
-       if (((mleaf_t *)node)->clusterindex >= 0)
-       {
-               int i;
-               qbyte *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
-               for (i = 0;i < pvsbytes;i++)
-                       pvsbuffer[i] |= pvs[i];
-       }
-}
-
-//Calculates a PVS that is the inclusive or of all leafs within radius pixels
-//of the given point.
-static int Mod_Q3BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
-{
-       int bytes = model->brush.num_pvsclusterbytes;
-       bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q3BSP_GetPVS(model, org))
-       {
-               memset(pvsbuffer, 0xFF, bytes);
-               return bytes;
-       }
-       memset(pvsbuffer, 0, bytes);
-       Mod_Q3BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
-       return bytes;
-}
-
-
 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 {
        int supercontents = 0;
@@ -5538,6 +5432,12 @@ static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativec
                supercontents |= SUPERCONTENTS_CORPSE;
        if (nativecontents & CONTENTSQ3_NODROP)
                supercontents |= SUPERCONTENTS_NODROP;
+       if (nativecontents & CONTENTSQ3_PLAYERCLIP)
+               supercontents |= SUPERCONTENTS_PLAYERCLIP;
+       if (nativecontents & CONTENTSQ3_MONSTERCLIP)
+               supercontents |= SUPERCONTENTS_MONSTERCLIP;
+       if (nativecontents & CONTENTSQ3_DONOTENTER)
+               supercontents |= SUPERCONTENTS_DONOTENTER;
        return supercontents;
 }
 
@@ -5558,6 +5458,12 @@ static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int superco
                nativecontents |= CONTENTSQ3_CORPSE;
        if (supercontents & SUPERCONTENTS_NODROP)
                nativecontents |= CONTENTSQ3_NODROP;
+       if (supercontents & SUPERCONTENTS_PLAYERCLIP)
+               nativecontents |= CONTENTSQ3_PLAYERCLIP;
+       if (supercontents & SUPERCONTENTS_MONSTERCLIP)
+               nativecontents |= CONTENTSQ3_MONSTERCLIP;
+       if (supercontents & SUPERCONTENTS_DONOTENTER)
+               nativecontents |= CONTENTSQ3_DONOTENTER;
        return nativecontents;
 }
 
@@ -5574,17 +5480,12 @@ void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
                loadmodel->brush.num_leafs = numleafs;
 }
 
-extern void R_Q3BSP_DrawSky(struct entity_render_s *ent);
-extern void R_Q3BSP_Draw(struct entity_render_s *ent);
-extern void R_Q3BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer);
-extern void R_Q3BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist);
-extern void R_Q3BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist);
-void Mod_Q3BSP_Load(model_t *mod, void *buffer)
+void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i, j, numshadowmeshtriangles;
        q3dheader_t *header;
        float corner[3], yawradius, modelradius;
-       q3msurface_t *face;
+       msurface_t *surface;
 
        mod->type = mod_brushq3;
        mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
@@ -5595,23 +5496,31 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        i = LittleLong(header->version);
        if (i != Q3BSPVERSION)
                Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
-       if (mod->isworldmodel)
-               Cvar_SetValue("halflifebsp", false);
+       mod->brush.ishlbsp = false;
+       mod->brush.ismcbsp = false;
+       if (loadmodel->isworldmodel)
+       {
+               Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
+               Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
+       }
 
        mod->soundfromcenter = true;
        mod->TraceBox = Mod_Q3BSP_TraceBox;
        mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
        mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
-       mod->brush.GetPVS = Mod_Q3BSP_GetPVS;
-       mod->brush.FatPVS = Mod_Q3BSP_FatPVS;
-       mod->brush.BoxTouchingPVS = Mod_Q3BSP_BoxTouchingPVS;
+       mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
+       mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
+       mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
+       mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
+       mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
        mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
-       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
-       //mod->DrawSky = R_Q3BSP_DrawSky;
-       mod->Draw = R_Q3BSP_Draw;
-       mod->GetLightInfo = R_Q3BSP_GetLightInfo;
-       mod->DrawShadowVolume = R_Q3BSP_DrawShadowVolume;
-       mod->DrawLight = R_Q3BSP_DrawLight;
+       mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
+       mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
+       mod->Draw = R_Q1BSP_Draw;
+       mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+       mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
+       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
+       mod->DrawLight = R_Q1BSP_DrawLight;
 
        mod_base = (qbyte *)header;
 
@@ -5643,24 +5552,36 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
        loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
 
+       // the MakePortals code works fine on the q3bsp data as well
+       Mod_Q1BSP_MakePortals();
+
        // make a single combined shadow mesh to allow optimized shadow volume creation
        numshadowmeshtriangles = 0;
-       for (j = 0, face = loadmodel->brushq3.data_faces;j < loadmodel->brushq3.num_faces;j++, face++)
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
        {
-               face->num_firstshadowmeshtriangle = numshadowmeshtriangles;
-               numshadowmeshtriangles += face->mesh.num_triangles;
+               surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += surface->num_triangles;
        }
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
-       for (j = 0, face = loadmodel->brushq3.data_faces;j < loadmodel->brushq3.num_faces;j++, face++)
-               Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, face->mesh.data_vertex3f, NULL, NULL, NULL, NULL, face->mesh.num_triangles, face->mesh.data_element3i);
+       for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
+               if (surface->groupmesh)
+                       Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, surface->groupmesh->data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle));
        loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
        Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
 
        loadmodel->brush.num_leafs = 0;
        Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
 
+       if (loadmodel->isworldmodel)
+       {
+               // clear out any stale submodels or worldmodels lying around
+               // if we did this clear before now, an error might abort loading and
+               // leave things in a bad state
+               Mod_RemoveStaleWorldModels(loadmodel);
+       }
+
        mod = loadmodel;
-       for (i = 0;i < loadmodel->brushq3.num_models;i++)
+       for (i = 0;i < loadmodel->brush.numsubmodels;i++)
        {
                if (i > 0)
                {
@@ -5681,16 +5602,21 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                        mod->brush.GetPVS = NULL;
                        mod->brush.FatPVS = NULL;
                        mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.BoxTouchingLeafPVS = NULL;
+                       mod->brush.BoxTouchingVisibleLeafs = NULL;
                        mod->brush.LightPoint = NULL;
-                       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
+                       mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
                }
                mod->brush.submodel = i;
 
                // make the model surface list (used by shadowing/lighting)
+               mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
                mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
+               mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
+               mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
                mod->surfacelist = Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
                for (j = 0;j < mod->nummodelsurfaces;j++)
-                       mod->surfacelist[j] = (mod->brushq3.data_models[i].firstface - mod->brushq3.data_faces) + j;
+                       mod->surfacelist[j] = mod->firstmodelsurface + j;
 
                VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
                VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
@@ -5708,26 +5634,26 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                mod->radius = modelradius;
                mod->radius2 = modelradius * modelradius;
 
-               for (j = 0;j < mod->brushq3.data_models[i].numfaces;j++)
-                       if (mod->brushq3.data_models[i].firstface[j].texture->surfaceflags & Q3SURFACEFLAG_SKY)
+               for (j = 0;j < mod->nummodelsurfaces;j++)
+                       if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
                                break;
-               if (j < mod->brushq3.data_models[i].numfaces)
-                       mod->DrawSky = R_Q3BSP_DrawSky;
+               if (j < mod->nummodelsurfaces)
+                       mod->DrawSky = R_Q1BSP_DrawSky;
        }
 }
 
-void Mod_IBSP_Load(model_t *mod, void *buffer)
+void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        int i = LittleLong(((int *)buffer)[1]);
        if (i == Q3BSPVERSION)
-               Mod_Q3BSP_Load(mod,buffer);
+               Mod_Q3BSP_Load(mod,buffer, bufferend);
        else if (i == Q2BSPVERSION)
-               Mod_Q2BSP_Load(mod,buffer);
+               Mod_Q2BSP_Load(mod,buffer, bufferend);
        else
                Host_Error("Mod_IBSP_Load: unknown/unsupported version %i\n", i);
 }
 
-void Mod_MAP_Load(model_t *mod, void *buffer)
+void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
 {
        Host_Error("Mod_MAP_Load: not yet implemented\n");
 }