]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
got rid of node->contents, leaf->contents kept (only needed temporarily during loadin...
[xonotic/darkplaces.git] / model_brush.c
index bcea9fabd661338ba4c5b2449c6de18ab3b4729e..df45a1d7495eb180aa99745e7b3f72ec84276bd8 100644 (file)
@@ -21,8 +21,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "quakedef.h"
 #include "image.h"
 #include "r_shadow.h"
-#include "winding.h"
+#include "polygon.h"
 #include "curves.h"
+#include "wad.h"
+
 
 // note: model_shared.c sets up r_notexture, and r_surf_notexture
 
@@ -34,7 +36,14 @@ cvar_t r_novis = {0, "r_novis", "0"};
 cvar_t r_miplightmaps = {CVAR_SAVE, "r_miplightmaps", "0"};
 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1"};
 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0"};
-cvar_t mod_q3bsp_curves_subdivide_level = {0, "mod_q3bsp_curves_subdivide_level", "2"};
+cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4"};
+cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "1"};
+cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024"};
+cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536"};
+cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15"};
+cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "1"};
+cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024"};
+cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225"};
 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"};
@@ -48,7 +57,14 @@ void Mod_BrushInit(void)
        Cvar_RegisterVariable(&r_miplightmaps);
        Cvar_RegisterVariable(&r_lightmaprgba);
        Cvar_RegisterVariable(&r_nosurftextures);
-       Cvar_RegisterVariable(&mod_q3bsp_curves_subdivide_level);
+       Cvar_RegisterVariable(&r_subdivisions_tolerance);
+       Cvar_RegisterVariable(&r_subdivisions_mintess);
+       Cvar_RegisterVariable(&r_subdivisions_maxtess);
+       Cvar_RegisterVariable(&r_subdivisions_maxvertices);
+       Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
+       Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
+       Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
+       Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
        Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
        Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
        Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
@@ -68,7 +84,7 @@ static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
        // LordHavoc: modified to start at first clip node,
        // in other words: first node of the (sub)model
        node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
-       while (node->contents == 0)
+       while (node->plane)
                node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 
        return (mleaf_t *)node;
@@ -81,7 +97,7 @@ static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p,
        leaf = Mod_Q1BSP_PointInLeaf(model, p);
        if (leaf)
        {
-               i = min(outsize, (int)sizeof(leaf->ambient_sound_level));;
+               i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
                if (i)
                {
                        memcpy(out, leaf->ambient_sound_level, i);
@@ -112,15 +128,16 @@ static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
                        else
                        {
                                // box crosses plane, take one path and remember the other
-                               nodestack[nodestackindex++] = node->children[0];
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
                                node = node->children[1];
                        }
                }
                else
                {
                        // leaf - check cluster bit
-                       clusterindex = (mleaf_t *)node - model->brushq1.leafs - 1;
-                       if (clusterindex >= 0 && pvs[clusterindex >> 3] & (1 << (clusterindex & 7)))
+                       clusterindex = ((mleaf_t *)node)->clusterindex;
+                       if (CHECKPVSBIT(pvs, clusterindex))
                        {
                                // it is visible, return immediately with the news
                                return true;
@@ -138,26 +155,6 @@ static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
        return false;
 }
 
-/*
-static int Mod_Q1BSP_PointContents(model_t *model, const vec3_t p)
-{
-       mnode_t *node;
-
-       if (model == NULL)
-               return CONTENTS_EMPTY;
-
-       Mod_CheckLoaded(model);
-
-       // LordHavoc: modified to start at first clip node,
-       // in other words: first node of the (sub)model
-       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
-       while (node->contents == 0)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
-
-       return ((mleaf_t *)node)->contents;
-}
-*/
-
 typedef struct findnonsolidlocationinfo_s
 {
        vec3_t center;
@@ -296,12 +293,7 @@ static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *in
 
 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 {
-       if (node->contents)
-       {
-               if (((mleaf_t *)node)->nummarksurfaces)
-                       Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
-       }
-       else
+       if (node->plane)
        {
                float f = PlaneDiff(info->center, node->plane);
                if (f >= -info->bestdist)
@@ -309,6 +301,11 @@ static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, m
                if (f <= info->bestdist)
                        Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
        }
+       else
+       {
+               if (((mleaf_t *)node)->nummarksurfaces)
+                       Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
+       }
 }
 
 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
@@ -427,7 +424,7 @@ loc0:
                        if (t->trace->allsolid)
                                t->trace->startsolid = true;
 #if COLLISIONPARANOID >= 3
-                       Con_Printf("S");
+                       Con_Print("S");
 #endif
                        return HULLCHECKSTATE_SOLID;
                }
@@ -435,7 +432,7 @@ loc0:
                {
                        t->trace->allsolid = false;
 #if COLLISIONPARANOID >= 3
-                       Con_Printf("E");
+                       Con_Print("E");
 #endif
                        return HULLCHECKSTATE_EMPTY;
                }
@@ -461,7 +458,7 @@ loc0:
                if (t2 < 0)
                {
 #if COLLISIONPARANOID >= 3
-                       Con_Printf("<");
+                       Con_Print("<");
 #endif
                        num = node->children[1];
                        goto loc0;
@@ -473,7 +470,7 @@ loc0:
                if (t2 >= 0)
                {
 #if COLLISIONPARANOID >= 3
-                       Con_Printf(">");
+                       Con_Print(">");
 #endif
                        num = node->children[0];
                        goto loc0;
@@ -484,7 +481,7 @@ loc0:
        // the line intersects, find intersection point
        // LordHavoc: this uses the original trace for maximum accuracy
 #if COLLISIONPARANOID >= 3
-       Con_Printf("M");
+       Con_Print("M");
 #endif
        if (plane->type < 3)
        {
@@ -535,7 +532,7 @@ loc0:
        t->trace->fraction = bound(0, midf, 1);
 
 #if COLLISIONPARANOID >= 3
-       Con_Printf("D");
+       Con_Print("D");
 #endif
        return HULLCHECKSTATE_DONE;
 }
@@ -609,7 +606,7 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace,
 #if COLLISIONPARANOID >= 2
        Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
        Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
-       Con_Printf("\n");
+       Con_Print("\n");
 #else
        if (DotProduct(rhc.dist, rhc.dist))
                Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
@@ -724,7 +721,7 @@ static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(vec3_t ambientcolor, vec3_t dif
        float mid;
 
 loc0:
-       if (node->contents < 0)
+       if (!node->plane)
                return false;           // didn't hit anything
 
        switch (node->plane->type)
@@ -761,7 +758,7 @@ loc0:
        }
 
        // go down front side
-       if (node->children[side]->contents >= 0 && Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
+       if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
                return true;    // hit something
        else
        {
@@ -771,32 +768,25 @@ loc0:
                        int i, ds, dt;
                        msurface_t *surf;
 
-                       surf = cl.worldmodel->brushq1.surfaces + node->firstsurface;
+                       surf = r_refdef.worldmodel->brushq1.surfaces + node->firstsurface;
                        for (i = 0;i < node->numsurfaces;i++, surf++)
                        {
-                               if (!(surf->flags & SURF_LIGHTMAP))
+                               if (!(surf->flags & SURF_LIGHTMAP) || !surf->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]);
-                               dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]);
-
-                               if (ds < surf->texturemins[0] || dt < surf->texturemins[1])
-                                       continue;
-
-                               ds -= surf->texturemins[0];
-                               dt -= surf->texturemins[1];
+                               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];
 
-                               if (ds > surf->extents[0] || dt > surf->extents[1])
-                                       continue;
-
-                               if (surf->samples)
+                               if (ds >= 0 && ds < surf->extents[0] && dt >= 0 && dt < surf->extents[1])
                                {
                                        qbyte *lightmap;
-                                       int maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
-                                       line3 = ((surf->extents[0]>>4)+1)*3;
-                                       size3 = ((surf->extents[0]>>4)+1) * ((surf->extents[1]>>4)+1)*3; // LordHavoc: *3 for colored lighting
+                                       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);
+                                       line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
+                                       size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
 
-                                       lightmap = surf->samples + ((dt>>4) * ((surf->extents[0]>>4)+1) + (ds>>4))*3; // LordHavoc: *3 for color
+                                       lightmap = surf->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
 
                                        for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
                                        {
@@ -844,8 +834,8 @@ middle sample (the one which was requested)
                                        ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
                                        ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
                                        ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
+                                       return true; // success
                                }
-                               return true; // success
                        }
                }
 
@@ -859,7 +849,7 @@ 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, cl.worldmodel->brushq1.nodes + cl.worldmodel->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2], p[2] - 65536);
+       Mod_Q1BSP_LightPoint_RecursiveBSPNode(ambientcolor, diffusecolor, diffusenormal, model->brushq1.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)
@@ -870,7 +860,7 @@ static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *
        {
                if (in == inend)
                {
-                       Con_DPrintf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                       Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                        return;
                }
                c = *in++;
@@ -880,14 +870,14 @@ static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *
                {
                        if (in == inend)
                        {
-                               Con_DPrintf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                               Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                                return;
                        }
                        for (c = *in++;c > 0;c--)
                        {
                                if (out == outend)
                                {
-                                       Con_DPrintf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
+                                       Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
                                        return;
                                }
                                *out++ = 0;
@@ -896,6 +886,77 @@ static void Mod_Q1BSP_DecompressVis(const qbyte *in, const qbyte *inend, qbyte *
        }
 }
 
+/*
+=============
+R_Q1BSP_LoadSplitSky
+
+A sky texture is 256*128, with the right side being a masked overlay
+==============
+*/
+void R_Q1BSP_LoadSplitSky (qbyte *src, int width, int height, int bytesperpixel)
+{
+       int i, j;
+       unsigned solidpixels[128*128], alphapixels[128*128];
+
+       // if sky isn't the right size, just use it as a solid layer
+       if (width != 256 || height != 128)
+       {
+               loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", width, height, src, bytesperpixel == 4 ? TEXTYPE_RGBA : TEXTYPE_PALETTE, TEXF_PRECACHE, bytesperpixel == 1 ? palette_complete : NULL);
+               loadmodel->brush.alphaskytexture = NULL;;
+               return;
+       }
+
+       if (bytesperpixel == 4)
+       {
+               for (i = 0;i < 128;i++)
+               {
+                       for (j = 0;j < 128;j++)
+                       {
+                               solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
+                               alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
+                       }
+               }
+       }
+       else
+       {
+               // make an average value for the back to avoid
+               // a fringe on the top level
+               int p, r, g, b;
+               union
+               {
+                       unsigned int i;
+                       unsigned char b[4];
+               }
+               rgba;
+               r = g = b = 0;
+               for (i = 0;i < 128;i++)
+               {
+                       for (j = 0;j < 128;j++)
+                       {
+                               rgba.i = palette_complete[src[i*256 + j + 128]];
+                               r += rgba.b[0];
+                               g += rgba.b[1];
+                               b += rgba.b[2];
+                       }
+               }
+               rgba.b[0] = r/(128*128);
+               rgba.b[1] = g/(128*128);
+               rgba.b[2] = b/(128*128);
+               rgba.b[3] = 0;
+               for (i = 0;i < 128;i++)
+               {
+                       for (j = 0;j < 128;j++)
+                       {
+                               solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
+                               alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
+                       }
+               }
+       }
+
+       loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (qbyte *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
+       loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (qbyte *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
+}
+
 static void Mod_Q1BSP_LoadTextures(lump_t *l)
 {
        int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
@@ -930,13 +991,10 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                tx->width = 16;
                tx->height = 16;
                tx->skin.base = r_notexture;
-               tx->shader = &Cshader_wall_lightmap;
-               tx->flags = SURF_SOLIDCLIP;
                if (i == loadmodel->brushq1.numtextures - 1)
-               {
-                       tx->flags |= SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
-                       tx->shader = &Cshader_water;
-               }
+                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+               else
+                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
                tx->currentframe = tx;
        }
 
@@ -974,7 +1032,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                }
 
                if ((mtwidth & 15) || (mtheight & 15))
-                       Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned", dmiptex->name, loadmodel->name);
+                       Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
 
                // LordHavoc: force all names to lowercase
                for (j = 0;name[j];j++)
@@ -1000,26 +1058,16 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                data = loadimagepixels(tx->name, false, 0, 0);
                                if (data)
                                {
-                                       if (image_width == 256 && image_height == 128)
-                                       {
-                                               R_InitSky(data, 4);
-                                               Mem_Free(data);
-                                       }
-                                       else
-                                       {
-                                               Mem_Free(data);
-                                               Con_Printf("Invalid replacement texture for sky \"%s\" in %\"%s\", must be 256x128 pixels\n", tx->name, loadmodel->name);
-                                               if (mtdata != NULL)
-                                                       R_InitSky(mtdata, 1);
-                                       }
+                                       R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
+                                       Mem_Free(data);
                                }
                                else if (mtdata != NULL)
-                                       R_InitSky(mtdata, 1);
+                                       R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
                        }
                }
                else
                {
-                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, false, true, true))
+                       if (!Mod_LoadSkinFrame(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true, true))
                        {
                                // did not find external texture, load it from the bsp or wad3
                                if (loadmodel->brush.ishlbsp)
@@ -1035,7 +1083,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                        {
                                                tx->width = image_width;
                                                tx->height = image_height;
-                                               tx->skin.base = tx->skin.merged = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
+                                               tx->skin.base = tx->skin.merged = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, NULL);
                                                if (Image_CheckAlpha(pixels, image_width * image_height, true))
                                                {
                                                        fogpixels = Mem_Alloc(tempmempool, image_width * image_height * 4);
@@ -1046,7 +1094,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                                                fogpixels[j + 2] = 255;
                                                                fogpixels[j + 3] = pixels[j + 3];
                                                        }
-                                                       tx->skin.fog = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, NULL);
+                                                       tx->skin.fog = R_LoadTexture2D(loadmodel->texturepool, tx->name, image_width, image_height, pixels, TEXTYPE_RGBA, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, NULL);
                                                        Mem_Free(fogpixels);
                                                }
                                        }
@@ -1054,7 +1102,7 @@ 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, 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, true, tx->name[0] != '*' && r_fullbrights.integer, mtdata, tx->width, tx->height);
                        }
                }
                if (tx->skin.base == NULL)
@@ -1068,8 +1116,7 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                if (tx->name[0] == '*')
                {
                        // turb does not block movement
-                       tx->flags &= ~SURF_SOLIDCLIP;
-                       tx->flags |= SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
                        // LordHavoc: some turbulent textures should be fullbright and solid
                        if (!strncmp(tx->name,"*lava",5)
                         || !strncmp(tx->name,"*teleport",9)
@@ -1077,20 +1124,11 @@ static void Mod_Q1BSP_LoadTextures(lump_t *l)
                                tx->flags |= SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA;
                        else
                                tx->flags |= SURF_WATERALPHA;
-                       tx->shader = &Cshader_water;
                }
                else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
-               {
-                       tx->flags |= SURF_DRAWSKY;
-                       tx->shader = &Cshader_sky;
-               }
+                       tx->flags = SURF_DRAWSKY | SURF_SOLIDCLIP;
                else
-               {
-                       tx->flags |= SURF_LIGHTMAP;
-                       if (!tx->skin.fog)
-                               tx->flags |= SURF_SHADOWCAST | SURF_SHADOWLIGHT;
-                       tx->shader = &Cshader_wall_lightmap;
-               }
+                       tx->flags = SURF_LIGHTMAP | SURF_SOLIDCLIP;
 
                // start out with no animation
                tx->currentframe = tx;
@@ -1207,7 +1245,8 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
        if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
        {
                loadmodel->brushq1.lightdata = Mem_Alloc(loadmodel->mempool, l->filelen);
-               memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
+               for (i=0; i<l->filelen; i++)
+                       loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
        }
        else // LordHavoc: bsp version 29 (normal white lighting)
        {
@@ -1215,7 +1254,7 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
                FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
                strlcat (litfilename, ".lit", sizeof (litfilename));
-               data = (qbyte*) FS_LoadFile(litfilename, false);
+               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')
@@ -1238,9 +1277,9 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
                        else
                        {
                                if (fs_filesize == 8)
-                                       Con_Printf("Empty .lit file, ignoring\n");
+                                       Con_Print("Empty .lit file, ignoring\n");
                                else
-                                       Con_Printf("Corrupt .lit file (old version?), ignoring\n");
+                                       Con_Print("Corrupt .lit file (old version?), ignoring\n");
                                Mem_Free(data);
                        }
                }
@@ -1264,24 +1303,25 @@ static void Mod_Q1BSP_LoadLighting(lump_t *l)
 static void Mod_Q1BSP_LoadLightList(void)
 {
        int a, n, numlights;
-       char lightsfilename[1024], *s, *t, *lightsstring;
+       char tempchar, *s, *t, *lightsstring, lightsfilename[1024];
        mlight_t *e;
 
        strlcpy (lightsfilename, loadmodel->name, sizeof (lightsfilename));
        FS_StripExtension (lightsfilename, lightsfilename, sizeof(lightsfilename));
        strlcat (lightsfilename, ".lights", sizeof (lightsfilename));
-       s = lightsstring = (char *) FS_LoadFile(lightsfilename, false);
+       s = lightsstring = (char *) FS_LoadFile(lightsfilename, tempmempool, false);
        if (s)
        {
                numlights = 0;
                while (*s)
                {
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                        {
                                Mem_Free(lightsstring);
-                               Host_Error("lights file must end with a newline\n");
+                               Con_Printf("lights file must end with a newline\n");
+                               return;
                        }
                        s++;
                        numlights++;
@@ -1292,30 +1332,31 @@ static void Mod_Q1BSP_LoadLightList(void)
                while (*s && n < numlights)
                {
                        t = s;
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                        {
-                               Mem_Free(lightsstring);
-                               Host_Error("misparsed lights file!\n");
+                               Con_Printf("misparsed lights file!\n");
+                               break;
                        }
                        e = loadmodel->brushq1.lights + n;
+                       tempchar = *s;
                        *s = 0;
                        a = sscanf(t, "%f %f %f %f %f %f %f %f %f %f %f %f %f %d", &e->origin[0], &e->origin[1], &e->origin[2], &e->falloff, &e->light[0], &e->light[1], &e->light[2], &e->subtract, &e->spotdir[0], &e->spotdir[1], &e->spotdir[2], &e->spotcone, &e->distbias, &e->style);
-                       *s = '\n';
+                       *s = tempchar;
                        if (a != 14)
                        {
-                               Mem_Free(lightsstring);
-                               Host_Error("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
+                               Con_Printf("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
+                               break;
                        }
-                       s++;
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)
-               {
-                       Mem_Free(lightsstring);
-                       Host_Error("misparsed lights file!\n");
-               }
+                       Con_Printf("misparsed lights file!\n");
                loadmodel->brushq1.numlights = numlights;
                Mem_Free(lightsstring);
        }
@@ -1517,7 +1558,7 @@ static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
                {
                        // if texture chosen is NULL or the shader needs a lightmap,
                        // force to notexture water shader
-                       if (out->texture == NULL || out->texture->shader->flags & SHADERFLAGS_NEEDLIGHTMAP)
+                       if (out->texture == NULL || out->texture->flags & SURF_LIGHTMAP)
                                out->texture = loadmodel->brushq1.textures + (loadmodel->brushq1.numtextures - 1);
                }
                else
@@ -1633,7 +1674,7 @@ static void SubdividePolygon(int numverts, float *verts)
        {
                if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
                {
-                       Con_Printf("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
+                       Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
                        return;
                }
 
@@ -1681,25 +1722,6 @@ static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surf)
 }
 #endif
 
-static surfmesh_t *Mod_Q1BSP_AllocSurfMesh(int numverts, int numtriangles)
-{
-       surfmesh_t *mesh;
-       mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + numtriangles * sizeof(int[6]) + numverts * (3 + 2 + 2 + 2 + 3 + 3 + 3 + 1) * sizeof(float));
-       mesh->num_vertices = numverts;
-       mesh->num_triangles = numtriangles;
-       mesh->data_vertex3f = (float *)(mesh + 1);
-       mesh->data_texcoordtexture2f = mesh->data_vertex3f + mesh->num_vertices * 3;
-       mesh->data_texcoordlightmap2f = mesh->data_texcoordtexture2f + mesh->num_vertices * 2;
-       mesh->data_texcoorddetail2f = mesh->data_texcoordlightmap2f + mesh->num_vertices * 2;
-       mesh->data_svector3f = (float *)(mesh->data_texcoorddetail2f + mesh->num_vertices * 2);
-       mesh->data_tvector3f = mesh->data_svector3f + mesh->num_vertices * 3;
-       mesh->data_normal3f = mesh->data_tvector3f + mesh->num_vertices * 3;
-       mesh->data_lightmapoffsets = (int *)(mesh->data_normal3f + mesh->num_vertices * 3);
-       mesh->data_element3i = mesh->data_lightmapoffsets + mesh->num_vertices;
-       mesh->data_neighbor3i = mesh->data_element3i + mesh->num_triangles * 3;
-       return mesh;
-}
-
 static void Mod_Q1BSP_GenerateSurfacePolygon(msurface_t *surf, int firstedge, int numedges)
 {
        int i, lindex, j;
@@ -1774,9 +1796,6 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
        loadmodel->brushq1.surfaces = Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
 
        loadmodel->brushq1.numsurfaces = count;
-       loadmodel->brushq1.surfacevisframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
-       loadmodel->brushq1.surfacepvsframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
-       loadmodel->brushq1.pvssurflist = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
 
        for (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++)
        {
@@ -1823,7 +1842,7 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                else // LordHavoc: white lighting (bsp version 29)
                        surf->samples = loadmodel->brushq1.lightdata + (i * 3);
 
-               if (surf->texinfo->texture->shader == &Cshader_wall_lightmap)
+               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
                {
                        if ((surf->extents[0] >> 4) + 1 > (256) || (surf->extents[1] >> 4) + 1 > (256))
                                Host_Error("Bad surface extents");
@@ -1834,23 +1853,27 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                }
        }
 
-       loadmodel->brushq1.entiremesh = Mod_Q1BSP_AllocSurfMesh(totalverts, totaltris);
+       // 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->brushq1.entiremesh->data_vertex3f + totalverts * 3;
-               mesh->data_texcoordtexture2f = loadmodel->brushq1.entiremesh->data_texcoordtexture2f + totalverts * 2;
-               mesh->data_texcoordlightmap2f = loadmodel->brushq1.entiremesh->data_texcoordlightmap2f + totalverts * 2;
-               mesh->data_texcoorddetail2f = loadmodel->brushq1.entiremesh->data_texcoorddetail2f + totalverts * 2;
-               mesh->data_svector3f = loadmodel->brushq1.entiremesh->data_svector3f + totalverts * 3;
-               mesh->data_tvector3f = loadmodel->brushq1.entiremesh->data_tvector3f + totalverts * 3;
-               mesh->data_normal3f = loadmodel->brushq1.entiremesh->data_normal3f + totalverts * 3;
-               mesh->data_lightmapoffsets = loadmodel->brushq1.entiremesh->data_lightmapoffsets + totalverts;
-               mesh->data_element3i = loadmodel->brushq1.entiremesh->data_element3i + totaltris * 3;
-               mesh->data_neighbor3i = loadmodel->brushq1.entiremesh->data_neighbor3i + totaltris * 3;
+               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;
@@ -1881,7 +1904,7 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
                Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, mesh->data_vertex3f, mesh->data_texcoordtexture2f, mesh->data_element3i, mesh->data_svector3f, mesh->data_tvector3f, mesh->data_normal3f);
 
-               if (surf->texinfo->texture->shader == &Cshader_wall_lightmap)
+               if (surf->texinfo->texture->flags & SURF_LIGHTMAP)
                {
                        int i, iu, iv, smax, tmax;
                        float u, v, ubase, vbase, uscale, vscale;
@@ -1889,7 +1912,6 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
                        smax = surf->extents[0] >> 4;
                        tmax = surf->extents[1] >> 4;
 
-                       surf->flags |= SURF_LIGHTMAP;
                        if (r_miplightmaps.integer)
                        {
                                surf->lightmaptexturestride = smax+1;
@@ -1922,10 +1944,11 @@ static void Mod_Q1BSP_LoadFaces(lump_t *l)
 static void Mod_Q1BSP_SetParent(mnode_t *node, mnode_t *parent)
 {
        node->parent = parent;
-       if (node->contents < 0)
-               return;
-       Mod_Q1BSP_SetParent(node->children[0], node);
-       Mod_Q1BSP_SetParent(node->children[1], node);
+       if (node->plane)
+       {
+               Mod_Q1BSP_SetParent(node->children[0], node);
+               Mod_Q1BSP_SetParent(node->children[1], node);
+       }
 }
 
 static void Mod_Q1BSP_LoadNodes(lump_t *l)
@@ -1963,7 +1986,7 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
                        if (p >= 0)
                                out->children[j] = loadmodel->brushq1.nodes + p;
                        else
-                               out->children[j] = (mnode_t *)(loadmodel->brushq1.leafs + (-1 - p));
+                               out->children[j] = (mnode_t *)(loadmodel->brushq1.data_leafs + (-1 - p));
                }
        }
 
@@ -1974,8 +1997,7 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
 {
        dleaf_t *in;
        mleaf_t *out;
-       int i, j, count, p, pvschainbytes;
-       qbyte *pvs;
+       int i, j, count, p;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
@@ -1983,11 +2005,13 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
        count = l->filelen / sizeof(*in);
        out = Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
-       loadmodel->brushq1.leafs = out;
-       loadmodel->brushq1.numleafs = count;
+       loadmodel->brushq1.data_leafs = out;
+       loadmodel->brushq1.num_leafs = count;
        // get visleafs from the submodel data
-       pvschainbytes = (loadmodel->brushq1.submodels[0].visleafs+7)>>3;
-       loadmodel->brushq1.data_decompressedpvs = pvs = Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numleafs * pvschainbytes);
+       loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
+       loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
+       loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
+       memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
 
        for ( i=0 ; i<count ; i++, in++, out++)
        {
@@ -2010,17 +2034,18 @@ static void Mod_Q1BSP_LoadLeafs(lump_t *l)
                        out->nummarksurfaces = 0;
                }
 
-               out->pvsdata = pvs;
-               memset(out->pvsdata, 0xFF, pvschainbytes);
-               pvs += pvschainbytes;
+               out->clusterindex = i - 1;
+               if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
+                       out->clusterindex = -1;
 
                p = LittleLong(in->visofs);
-               if (p >= 0 && i > 0) // ignore visofs errors on leaf 0 (solid)
+               // ignore visofs errors on leaf 0 (solid)
+               if (p >= 0 && out->clusterindex >= 0)
                {
                        if (p >= loadmodel->brushq1.num_compressedpvs)
-                               Con_Printf("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
+                               Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
                        else
-                               Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, out->pvsdata, out->pvsdata + pvschainbytes);
+                               Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, loadmodel->brush.data_pvsclusters + out->clusterindex * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (out->clusterindex + 1) * loadmodel->brush.num_pvsclusterbytes);
                }
 
                for (j = 0;j < 4;j++)
@@ -2146,8 +2171,8 @@ static void Mod_Q1BSP_MakeHull0(void)
        for (i = 0;i < loadmodel->brushq1.numnodes;i++, out++, in++)
        {
                out->planenum = in->plane - loadmodel->brushq1.planes;
-               out->children[0] = in->children[0]->contents < 0 ? in->children[0]->contents : in->children[0] - loadmodel->brushq1.nodes;
-               out->children[1] = in->children[1]->contents < 0 ? in->children[1]->contents : in->children[1] - loadmodel->brushq1.nodes;
+               out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brushq1.nodes : ((mleaf_t *)in->children[0])->contents;
+               out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brushq1.nodes : ((mleaf_t *)in->children[1])->contents;
        }
 }
 
@@ -2211,12 +2236,111 @@ static void Mod_Q1BSP_LoadPlanes(lump_t *l)
        }
 }
 
+static void Mod_Q1BSP_LoadMapBrushes(void)
+{
+#if 0
+// unfinished
+       int submodel, numbrushes;
+       qboolean firstbrush;
+       char *text, *maptext;
+       char mapfilename[MAX_QPATH];
+       FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
+       strlcat (mapfilename, ".map", sizeof (mapfilename));
+       maptext = (qbyte*) FS_LoadFile(mapfilename, tempmempool, false);
+       if (!maptext)
+               return;
+       text = maptext;
+       if (!COM_ParseToken(&data, false))
+               return; // error
+       submodel = 0;
+       for (;;)
+       {
+               if (!COM_ParseToken(&data, false))
+                       break;
+               if (com_token[0] != '{')
+                       return; // error
+               // entity
+               firstbrush = true;
+               numbrushes = 0;
+               maxbrushes = 256;
+               brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
+               for (;;)
+               {
+                       if (!COM_ParseToken(&data, false))
+                               return; // error
+                       if (com_token[0] == '}')
+                               break; // end of entity
+                       if (com_token[0] == '{')
+                       {
+                               // brush
+                               if (firstbrush)
+                               {
+                                       if (submodel)
+                                       {
+                                               if (submodel > loadmodel->brush.numsubmodels)
+                                               {
+                                                       Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
+                                                       model = NULL;
+                                               }
+                                               else
+                                                       model = loadmodel->brush.submodels[submodel];
+                                       }
+                                       else
+                                               model = loadmodel;
+                               }
+                               for (;;)
+                               {
+                                       if (!COM_ParseToken(&data, false))
+                                               return; // error
+                                       if (com_token[0] == '}')
+                                               break; // end of brush
+                                       // each brush face should be this format:
+                                       // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
+                                       // FIXME: support hl .map format
+                                       for (pointnum = 0;pointnum < 3;pointnum++)
+                                       {
+                                               COM_ParseToken(&data, false);
+                                               for (componentnum = 0;componentnum < 3;componentnum++)
+                                               {
+                                                       COM_ParseToken(&data, false);
+                                                       point[pointnum][componentnum] = atof(com_token);
+                                               }
+                                               COM_ParseToken(&data, false);
+                                       }
+                                       COM_ParseToken(&data, false);
+                                       strlcpy(facetexture, com_token, sizeof(facetexture));
+                                       COM_ParseToken(&data, false);
+                                       //scroll_s = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scroll_t = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //rotate = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scale_s = atof(com_token);
+                                       COM_ParseToken(&data, false);
+                                       //scale_t = atof(com_token);
+                                       TriangleNormal(point[0], point[1], point[2], planenormal);
+                                       VectorNormalizeDouble(planenormal);
+                                       planedist = DotProduct(point[0], planenormal);
+                                       //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
+                               }
+                               continue;
+                       }
+               }
+       }
+#endif
+}
+
+
+#define MAX_PORTALPOINTS 64
+
 typedef struct portal_s
 {
        mplane_t plane;
        mnode_t *nodes[2];              // [0] = front side of plane
        struct portal_s *next[2];
-       winding_t *winding;
+       int numpoints;
+       double points[3*MAX_PORTALPOINTS];
        struct portal_s *chain; // all portals are linked into a list
 }
 portal_t;
@@ -2244,11 +2368,13 @@ static void FreePortal(portal_t *p)
 
 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
 {
+       // process only nodes (leafs already had their box calculated)
+       if (!node->plane)
+               return;
+
        // calculate children first
-       if (node->children[0]->contents >= 0)
-               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
-       if (node->children[1]->contents >= 0)
-               Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
+       Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
 
        // make combined bounding box from children
        node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
@@ -2266,11 +2392,10 @@ static void Mod_Q1BSP_FinalizePortals(void)
        mportal_t *portal;
        mvertex_t *point;
        mleaf_t *leaf, *endleaf;
-       winding_t *w;
 
        // recalculate bounding boxes for all leafs(because qbsp is very sloppy)
-       leaf = loadmodel->brushq1.leafs;
-       endleaf = leaf + loadmodel->brushq1.numleafs;
+       leaf = loadmodel->brushq1.data_leafs;
+       endleaf = leaf + loadmodel->brushq1.num_leafs;
        for (;leaf < endleaf;leaf++)
        {
                VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
@@ -2279,20 +2404,19 @@ static void Mod_Q1BSP_FinalizePortals(void)
        p = portalchain;
        while (p)
        {
-               if (p->winding)
+               if (p->numpoints >= 3)
                {
                        for (i = 0;i < 2;i++)
                        {
                                leaf = (mleaf_t *)p->nodes[i];
-                               w = p->winding;
-                               for (j = 0;j < w->numpoints;j++)
+                               for (j = 0;j < p->numpoints;j++)
                                {
-                                       if (leaf->mins[0] > w->points[j][0]) leaf->mins[0] = w->points[j][0];
-                                       if (leaf->mins[1] > w->points[j][1]) leaf->mins[1] = w->points[j][1];
-                                       if (leaf->mins[2] > w->points[j][2]) leaf->mins[2] = w->points[j][2];
-                                       if (leaf->maxs[0] < w->points[j][0]) leaf->maxs[0] = w->points[j][0];
-                                       if (leaf->maxs[1] < w->points[j][1]) leaf->maxs[1] = w->points[j][1];
-                                       if (leaf->maxs[2] < w->points[j][2]) leaf->maxs[2] = w->points[j][2];
+                                       if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
+                                       if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
+                                       if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
+                                       if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
+                                       if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
+                                       if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
                                }
                        }
                }
@@ -2309,12 +2433,10 @@ static void Mod_Q1BSP_FinalizePortals(void)
        {
                // note: this check must match the one below or it will usually corrupt memory
                // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-               if (p->winding && p->nodes[0] != p->nodes[1]
-                && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+               if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
                {
                        numportals += 2;
-                       numpoints += p->winding->numpoints * 2;
+                       numpoints += p->numpoints * 2;
                }
                p = p->chain;
        }
@@ -2323,8 +2445,8 @@ static void Mod_Q1BSP_FinalizePortals(void)
        loadmodel->brushq1.portalpoints = (void *)((qbyte *) loadmodel->brushq1.portals + numportals * sizeof(mportal_t));
        loadmodel->brushq1.numportalpoints = numpoints;
        // clear all leaf portal chains
-       for (i = 0;i < loadmodel->brushq1.numleafs;i++)
-               loadmodel->brushq1.leafs[i].portals = NULL;
+       for (i = 0;i < loadmodel->brushq1.num_leafs;i++)
+               loadmodel->brushq1.data_leafs[i].portals = NULL;
        // process all portals in the global portal chain, while freeing them
        portal = loadmodel->brushq1.portals;
        point = loadmodel->brushq1.portalpoints;
@@ -2334,59 +2456,55 @@ static void Mod_Q1BSP_FinalizePortals(void)
        {
                pnext = p->chain;
 
-               if (p->winding)
+               // note: this check must match the one above or it will usually corrupt memory
+               // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
+               if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
                {
-                       // note: this check must match the one above or it will usually corrupt memory
-                       // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
-                       if (p->nodes[0] != p->nodes[1]
-                        && p->nodes[0]->contents != CONTENTS_SOLID && p->nodes[1]->contents != CONTENTS_SOLID
-                        && p->nodes[0]->contents != CONTENTS_SKY && p->nodes[1]->contents != CONTENTS_SKY)
+                       // first make the back to front portal(forward portal)
+                       portal->points = point;
+                       portal->numpoints = p->numpoints;
+                       portal->plane.dist = p->plane.dist;
+                       VectorCopy(p->plane.normal, portal->plane.normal);
+                       portal->here = (mleaf_t *)p->nodes[1];
+                       portal->past = (mleaf_t *)p->nodes[0];
+                       // copy points
+                       for (j = 0;j < portal->numpoints;j++)
                        {
-                               // first make the back to front portal(forward portal)
-                               portal->points = point;
-                               portal->numpoints = p->winding->numpoints;
-                               portal->plane.dist = p->plane.dist;
-                               VectorCopy(p->plane.normal, portal->plane.normal);
-                               portal->here = (mleaf_t *)p->nodes[1];
-                               portal->past = (mleaf_t *)p->nodes[0];
-                               // copy points
-                               for (j = 0;j < portal->numpoints;j++)
-                               {
-                                       VectorCopy(p->winding->points[j], point->position);
-                                       point++;
-                               }
-                               PlaneClassify(&portal->plane);
-
-                               // link into leaf's portal chain
-                               portal->next = portal->here->portals;
-                               portal->here->portals = portal;
-
-                               // advance to next portal
-                               portal++;
-
-                               // then make the front to back portal(backward portal)
-                               portal->points = point;
-                               portal->numpoints = p->winding->numpoints;
-                               portal->plane.dist = -p->plane.dist;
-                               VectorNegate(p->plane.normal, portal->plane.normal);
-                               portal->here = (mleaf_t *)p->nodes[0];
-                               portal->past = (mleaf_t *)p->nodes[1];
-                               // copy points
-                               for (j = portal->numpoints - 1;j >= 0;j--)
-                               {
-                                       VectorCopy(p->winding->points[j], point->position);
-                                       point++;
-                               }
-                               PlaneClassify(&portal->plane);
+                               VectorCopy(p->points + j*3, point->position);
+                               point++;
+                       }
+                       BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
+                       PlaneClassify(&portal->plane);
+
+                       // link into leaf's portal chain
+                       portal->next = portal->here->portals;
+                       portal->here->portals = portal;
+
+                       // advance to next portal
+                       portal++;
+
+                       // then make the front to back portal(backward portal)
+                       portal->points = point;
+                       portal->numpoints = p->numpoints;
+                       portal->plane.dist = -p->plane.dist;
+                       VectorNegate(p->plane.normal, portal->plane.normal);
+                       portal->here = (mleaf_t *)p->nodes[0];
+                       portal->past = (mleaf_t *)p->nodes[1];
+                       // copy points
+                       for (j = portal->numpoints - 1;j >= 0;j--)
+                       {
+                               VectorCopy(p->points + j*3, point->position);
+                               point++;
+                       }
+                       BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
+                       PlaneClassify(&portal->plane);
 
-                               // link into leaf's portal chain
-                               portal->next = portal->here->portals;
-                               portal->here->portals = portal;
+                       // link into leaf's portal chain
+                       portal->next = portal->here->portals;
+                       portal->here->portals = portal;
 
-                               // advance to next portal
-                               portal++;
-                       }
-                       Winding_Free(p->winding);
+                       // advance to next portal
+                       portal++;
                }
                FreePortal(p);
                p = pnext;
@@ -2468,14 +2586,15 @@ static void RemovePortalFromNodes(portal_t *portal)
 
 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
 {
-       int side;
+       int i, side;
        mnode_t *front, *back, *other_node;
        mplane_t clipplane, *plane;
        portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
-       winding_t *nodeportalwinding, *frontwinding, *backwinding;
+       int numfrontpoints, numbackpoints;
+       double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
 
        // if a leaf, we're done
-       if (node->contents)
+       if (!node->plane)
                return;
 
        plane = node->plane;
@@ -2490,7 +2609,8 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
        nodeportal = AllocPortal();
        nodeportal->plane = *plane;
 
-       nodeportalwinding = Winding_NewFromPlane(nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist);
+       PolygonD_QuadForPlane(nodeportal->points, nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist, 1024.0*1024.0*1024.0);
+       nodeportal->numpoints = 4;
        side = 0;       // shut up compiler warning
        for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
        {
@@ -2508,76 +2628,86 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
                else
                        Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
 
-               nodeportalwinding = Winding_Clip(nodeportalwinding, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, true);
-               if (!nodeportalwinding)
-               {
-                       Con_Printf("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
+               for (i = 0;i < nodeportal->numpoints*3;i++)
+                       frontpoints[i] = nodeportal->points[i];
+               PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, 1.0/32.0, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL);
+               if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
                        break;
-               }
        }
 
-       if (nodeportalwinding)
+       if (nodeportal->numpoints < 3)
        {
-               // if the plane was not clipped on all sides, there was an error
-               nodeportal->winding = nodeportalwinding;
-               AddPortalToNodes(nodeportal, front, back);
+               Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
+               nodeportal->numpoints = 0;
        }
-
-       // 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)
+       else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
        {
-               if (portal->nodes[0] == portal->nodes[1])
-                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
-               if (portal->nodes[0] == node)
-                       side = 0;
-               else if (portal->nodes[1] == node)
-                       side = 1;
-               else
-                       Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
-               nextportal = portal->next[side];
-
-               other_node = portal->nodes[!side];
-               RemovePortalFromNodes(portal);
-
-               // cut the portal into two portals, one on each side of the node plane
-               Winding_Divide(portal->winding, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, &frontwinding, &backwinding);
+               Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
+               nodeportal->numpoints = 0;
+       }
+       else
+       {
+               AddPortalToNodes(nodeportal, front, back);
 
-               if (!frontwinding)
+               // 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 (side == 0)
-                               AddPortalToNodes(portal, back, other_node);
+                       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
-                               AddPortalToNodes(portal, other_node, back);
-                       continue;
-               }
-               if (!backwinding)
-               {
+                               Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
+                       nextportal = portal->next[side];
+
+                       other_node = portal->nodes[!side];
+                       RemovePortalFromNodes(portal);
+
+                       // cut the portal into two portals, one on each side of the node plane
+                       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);
+                               else
+                                       AddPortalToNodes(portal, other_node, front);
+                               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);
-                       continue;
-               }
-
-               // the winding is split
-               splitportal = AllocPortal();
-               temp = splitportal->chain;
-               *splitportal = *portal;
-               splitportal->chain = temp;
-               splitportal->winding = backwinding;
-               Winding_Free(portal->winding);
-               portal->winding = frontwinding;
-
-               if (side == 0)
-               {
-                       AddPortalToNodes(portal, front, other_node);
-                       AddPortalToNodes(splitportal, back, other_node);
-               }
-               else
-               {
-                       AddPortalToNodes(portal, other_node, front);
-                       AddPortalToNodes(splitportal, other_node, back);
+                               AddPortalToNodes(splitportal, other_node, back);
+                       }
                }
        }
 
@@ -2643,9 +2773,9 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        int i, j, stylecounts[256], totalcount, remapstyles[256];
        msurface_t *surf;
        memset(stylecounts, 0, sizeof(stylecounts));
-       for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
+       for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface + i;
+               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
                        stylecounts[surf->styles[j]]++;
        }
@@ -2675,9 +2805,9 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
                model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
                j += stylecounts[model->brushq1.light_style[i]] + 1;
        }
-       for (i = 0;i < model->brushq1.nummodelsurfaces;i++)
+       for (i = 0;i < model->nummodelsurfaces;i++)
        {
-               surf = model->brushq1.surfaces + model->brushq1.firstmodelsurface + i;
+               surf = model->brushq1.surfaces + model->firstmodelsurface + i;
                for (j = 0;j < MAXLIGHTMAPS;j++)
                        if (surf->styles[j] != 255)
                                *model->brushq1.light_styleupdatechains[remapstyles[surf->styles[j]]]++ = surf;
@@ -2691,50 +2821,26 @@ static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *mod
        }
 }
 
-static void Mod_Q1BSP_BuildPVSTextureChains(model_t *model)
+//Returns PVS data for a given point
+//(note: can return NULL)
+static qbyte *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
 {
-       int i, j;
-       for (i = 0;i < model->brushq1.numtextures;i++)
-               model->brushq1.pvstexturechainslength[i] = 0;
-       for (i = 0, j = model->brushq1.firstmodelsurface;i < model->brushq1.nummodelsurfaces;i++, j++)
-       {
-               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
-               {
-                       model->brushq1.pvssurflist[model->brushq1.pvssurflistlength++] = j;
-                       model->brushq1.pvstexturechainslength[model->brushq1.surfaces[j].texinfo->texture->number]++;
-               }
-       }
-       for (i = 0, j = 0;i < model->brushq1.numtextures;i++)
-       {
-               if (model->brushq1.pvstexturechainslength[i])
-               {
-                       model->brushq1.pvstexturechains[i] = model->brushq1.pvstexturechainsbuffer + j;
-                       j += model->brushq1.pvstexturechainslength[i] + 1;
-               }
-               else
-                       model->brushq1.pvstexturechains[i] = NULL;
-       }
-       for (i = 0, j = model->brushq1.firstmodelsurface;i < model->brushq1.nummodelsurfaces;i++, j++)
-               if (model->brushq1.surfacepvsframes[j] == model->brushq1.pvsframecount)
-                       *model->brushq1.pvstexturechains[model->brushq1.surfaces[j].texinfo->texture->number]++ = model->brushq1.surfaces + j;
-       for (i = 0;i < model->brushq1.numtextures;i++)
-       {
-               if (model->brushq1.pvstexturechainslength[i])
-               {
-                       *model->brushq1.pvstexturechains[i] = NULL;
-                       model->brushq1.pvstexturechains[i] -= model->brushq1.pvstexturechainslength[i];
-               }
-       }
+       mnode_t *node;
+       Mod_CheckLoaded(model);
+       node = model->brushq1.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_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbytes, mnode_t *node)
 {
-       int i;
-       float d;
-
-       while (node->contents >= 0)
+       while (node->plane)
        {
-               d = PlaneDiff(org, node->plane);
+               float d = PlaneDiff(org, node->plane);
                if (d > radius)
                        node = node->children[0];
                else if (d < -radius)
@@ -2746,20 +2852,23 @@ static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org,
                        node = node->children[1];
                }
        }
-       // FIXME: code!
-       // if this is a leaf, accumulate the pvs bits
-       if (/*node->contents != CONTENTS_SOLID && */((mleaf_t *)node)->pvsdata)
+       // 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] |= ((mleaf_t *)node)->pvsdata[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_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
 {
-       int bytes = ((model->brushq1.numleafs - 1) + 7) >> 3;
+       int bytes = ((model->brushq1.num_leafs - 1) + 7) >> 3;
        bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer)
+       if (r_novis.integer || !Mod_Q1BSP_GetPVS(model, org))
        {
                memset(pvsbuffer, 0xFF, bytes);
                return bytes;
@@ -2769,20 +2878,6 @@ static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyt
        return bytes;
 }
 
-//Returns PVS data for a given point
-//(note: always returns valid data, never NULL)
-static qbyte *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
-{
-       mnode_t *node;
-       Mod_CheckLoaded(model);
-       // LordHavoc: modified to start at first clip node,
-       // in other words: first node of the (sub)model
-       node = model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode;
-       while (node->contents == 0)
-               node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
-       return ((mleaf_t *)node)->pvsdata;
-}
-
 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
 {
        vec3_t size;
@@ -2816,22 +2911,70 @@ static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, co
        VectorAdd(inmins, hull->clip_size, outmaxs);
 }
 
-extern void R_Model_Brush_DrawSky(entity_render_t *ent);
-extern void R_Model_Brush_Draw(entity_render_t *ent);
-extern void R_Model_Brush_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
-extern void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
+/*
+void Mod_Q1BSP_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 marksurfacenum;
+               msurface_t *surf;
+               if (maxleafs && *numleafs < maxleafs)
+                       leaflist[(*numleafs)++] = leaf;
+               if (maxsurfaces)
+               {
+                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
+                       {
+                               surf = model->brushq1.surfaces + leaf->firstmarksurface[marksurfacenum];
+                               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->brushq1.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)
 {
        int i, j, k;
        dheader_t *header;
        dmodel_t *bm;
        mempool_t *mainmempool;
-       char *loadname;
-       model_t *originalloadmodel;
        float dist, modelyawradius, modelradius, *vec;
        msurface_t *surf;
+       int numshadowmeshtriangles;
 
-       mod->type = mod_brush;
+       mod->type = mod_brushq1;
 
        header = (dheader_t *)buffer;
 
@@ -2852,20 +2995,19 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
        mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
        mod->brushq1.PointInLeaf = Mod_Q1BSP_PointInLeaf;
-       mod->brushq1.BuildPVSTextureChains = Mod_Q1BSP_BuildPVSTextureChains;
 
        if (loadmodel->isworldmodel)
-       {
                Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
-               // until we get a texture for it...
-               R_ResetQuakeSky();
-       }
 
 // swap all the lumps
        mod_base = (qbyte *)header;
 
-       for (i = 0;i < (int) sizeof(dheader_t) / 4;i++)
-               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+       header->version = LittleLong(header->version);
+       for (i = 0;i < HEADER_LUMPS;i++)
+       {
+               header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
+               header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
+       }
 
 // load into heap
 
@@ -2889,6 +3031,9 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
        Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES]);
 
+       if (!mod->brushq1.lightdata)
+               mod->brush.LightPoint = NULL;
+
        if (mod->brushq1.data_compressedpvs)
                Mem_Free(mod->brushq1.data_compressedpvs);
        mod->brushq1.data_compressedpvs = NULL;
@@ -2898,18 +3043,70 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
        Mod_Q1BSP_MakePortals();
 
        mod->numframes = 2;             // regular and alternate animation
+       mod->numskins = 1;
 
        mainmempool = mod->mempool;
-       loadname = mod->name;
 
        Mod_Q1BSP_LoadLightList();
-       originalloadmodel = loadmodel;
 
-//
-// set up the submodels(FIXME: this is confusing)
-//
+       // 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++)
+       {
+               surf->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += surf->mesh.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);
+       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 *));
+
+       // LordHavoc: to clear the fog around the original quake submodel code, I
+       // will explain:
+       // first of all, some background info on the submodels:
+       // model 0 is the map model (the world, named maps/e1m1.bsp for example)
+       // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
+       // now the weird for loop itself:
+       // the loop functions in an odd way, on each iteration it sets up the
+       // current 'mod' model (which despite the confusing code IS the model of
+       // the number i), at the end of the loop it duplicates the model to become
+       // the next submodel, and loops back to set up the new submodel.
+
+       // LordHavoc: now the explanation of my sane way (which works identically):
+       // set up the world model, then on each submodel copy from the world model
+       // and set up the submodel with the respective model info.
        for (i = 0;i < mod->brush.numsubmodels;i++)
        {
+               // LordHavoc: this code was originally at the end of this loop, but
+               // has been transformed to something more readable at the start here.
+
+               if (i > 0)
+               {
+                       char name[10];
+                       // LordHavoc: only register submodels if it is the world
+                       // (prevents external bsp models from replacing world submodels with
+                       //  their own)
+                       if (!loadmodel->isworldmodel)
+                               continue;
+                       // duplicate the basic information
+                       sprintf(name, "*%i", i);
+                       mod = Mod_FindName(name);
+                       // copy the base model to this one
+                       *mod = *loadmodel;
+                       // rename the clone back to its proper name
+                       strcpy(mod->name, name);
+                       // textures and memory belong to the main model
+                       mod->texturepool = NULL;
+                       mod->mempool = NULL;
+               }
+
+               if (loadmodel->brush.submodels)
+                       loadmodel->brush.submodels[i] = mod;
+
                bm = &mod->brushq1.submodels[i];
 
                mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
@@ -2919,31 +3116,41 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                        mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
                }
 
-               mod->brushq1.firstmodelsurface = bm->firstface;
-               mod->brushq1.nummodelsurfaces = bm->numfaces;
+               mod->firstmodelsurface = bm->firstface;
+               mod->nummodelsurfaces = bm->numfaces;
+
+               // make the model surface list (used by shadowing/lighting)
+               mod->surfacelist = Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
+               for (j = 0;j < mod->nummodelsurfaces;j++)
+                       mod->surfacelist[j] = mod->firstmodelsurface + j;
 
                // this gets altered below if sky is used
                mod->DrawSky = NULL;
-               mod->Draw = R_Model_Brush_Draw;
-               mod->DrawShadowVolume = R_Model_Brush_DrawShadowVolume;
-               mod->DrawLight = R_Model_Brush_DrawLight;
-               mod->brushq1.pvstexturechains = Mem_Alloc(originalloadmodel->mempool, mod->brushq1.numtextures * sizeof(msurface_t **));
-               mod->brushq1.pvstexturechainsbuffer = Mem_Alloc(originalloadmodel->mempool,(mod->brushq1.nummodelsurfaces + mod->brushq1.numtextures) * sizeof(msurface_t *));
-               mod->brushq1.pvstexturechainslength = Mem_Alloc(originalloadmodel->mempool, mod->brushq1.numtextures * sizeof(int));
-               Mod_Q1BSP_BuildPVSTextureChains(mod);
-               Mod_Q1BSP_BuildLightmapUpdateChains(originalloadmodel->mempool, mod);
-               if (mod->brushq1.nummodelsurfaces)
+               mod->Draw = R_Q1BSP_Draw;
+               mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+               mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
+               mod->DrawLight = R_Q1BSP_DrawLight;
+               if (i != 0)
+               {
+                       mod->brush.GetPVS = NULL;
+                       mod->brush.FatPVS = NULL;
+                       mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.LightPoint = NULL;
+                       mod->brush.AmbientSoundLevelsForPoint = NULL;
+               }
+               Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
+               if (mod->nummodelsurfaces)
                {
                        // LordHavoc: calculate bmodel bounding box rather than trusting what it says
                        mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
                        mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
                        modelyawradius = 0;
                        modelradius = 0;
-                       for (j = 0, surf = &mod->brushq1.surfaces[mod->brushq1.firstmodelsurface];j < mod->brushq1.nummodelsurfaces;j++, surf++)
+                       for (j = 0, surf = &mod->brushq1.surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
                        {
                                // we only need to have a drawsky function if it is used(usually only on world model)
-                               if (surf->texinfo->texture->shader == &Cshader_sky)
-                                       mod->DrawSky = R_Model_Brush_DrawSky;
+                               if (surf->texinfo->texture->flags & SURF_DRAWSKY)
+                                       mod->DrawSky = R_Q1BSP_DrawSky;
                                // LordHavoc: submodels always clip, even if water
                                if (mod->brush.numsubmodels - 1)
                                        surf->flags |= SURF_SOLIDCLIP;
@@ -2977,34 +3184,19 @@ void Mod_Q1BSP_Load(model_t *mod, void *buffer)
                else
                {
                        // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
-                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadname);
+                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
                }
-               Mod_Q1BSP_BuildSurfaceNeighbors(mod->brushq1.surfaces + mod->brushq1.firstmodelsurface, mod->brushq1.nummodelsurfaces, originalloadmodel->mempool);
-
-               mod->brushq1.visleafs = bm->visleafs;
+               Mod_Q1BSP_BuildSurfaceNeighbors(mod->brushq1.surfaces + mod->firstmodelsurface, mod->nummodelsurfaces, loadmodel->mempool);
 
-               // LordHavoc: only register submodels if it is the world
-               // (prevents bsp models from replacing world submodels)
-               if (loadmodel->isworldmodel && i < (mod->brush.numsubmodels - 1))
-               {
-                       char    name[10];
-                       // duplicate the basic information
-                       sprintf(name, "*%i", i+1);
-                       loadmodel = Mod_FindName(name);
-                       *loadmodel = *mod;
-                       strcpy(loadmodel->name, name);
-                       // textures and memory belong to the main model
-                       loadmodel->texturepool = NULL;
-                       loadmodel->mempool = NULL;
-                       mod = loadmodel;
-               }
+               mod->brushq1.num_visleafs = bm->visleafs;
        }
 
-       loadmodel = originalloadmodel;
+       Mod_Q1BSP_LoadMapBrushes();
+
        //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->brushq1.numnodes, loadmodel->brushq1.numleafs, loadmodel->brushq1.visleafs, loadmodel->brushq1.numportals);
+               Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->brushq1.numsurfaces, loadmodel->brushq1.numnodes, loadmodel->brushq1.num_leafs, loadmodel->brushq1.num_visleafs, loadmodel->brushq1.numportals);
 }
 
 static void Mod_Q2BSP_LoadEntities(lump_t *l)
@@ -3401,11 +3593,7 @@ void static Mod_Q2BSP_Load(model_t *mod, void *buffer)
                Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
        mod->brush.ishlbsp = false;
        if (loadmodel->isworldmodel)
-       {
                Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
-               // until we get a texture for it...
-               R_ResetQuakeSky();
-       }
 
        mod_base = (qbyte *)header;
 
@@ -3489,8 +3677,11 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        fssearch_t *search;
        char *f;
        const char *text;
-       int flags;
+       int flags, flags2, numparameters, passnumber;
        char shadername[Q3PATHLENGTH];
+       char sky[Q3PATHLENGTH];
+       char firstpasstexturename[Q3PATHLENGTH];
+       char parameter[4][Q3PATHLENGTH];
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
@@ -3506,9 +3697,7 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
                out->number = i;
                strlcpy (out->name, in->name, sizeof (out->name));
                out->surfaceflags = LittleLong(in->surfaceflags);
-               out->nativecontents = LittleLong(in->contents);
-               out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, out->nativecontents);
-               Mod_LoadSkinFrame(&out->skin, out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE, false, true, true);
+               out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
                out->surfaceparms = -1;
        }
 
@@ -3517,111 +3706,200 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        {
                for (i = 0;i < search->numfilenames;i++)
                {
-                       if ((f = FS_LoadFile(search->filenames[i], false)))
+                       if ((f = FS_LoadFile(search->filenames[i], tempmempool, false)))
                        {
                                text = f;
                                while (COM_ParseToken(&text, false))
                                {
-                                       snprintf(shadername, sizeof(shadername), "%s", com_token);
+                                       strlcpy (shadername, com_token, sizeof (shadername));
                                        flags = 0;
-                                       if (COM_ParseToken(&text, false) && !strcmp(com_token, "{"))
+                                       flags2 = 0;
+                                       sky[0] = 0;
+                                       passnumber = 0;
+                                       firstpasstexturename[0] = 0;
+                                       if (COM_ParseToken(&text, false) && !strcasecmp(com_token, "{"))
                                        {
                                                while (COM_ParseToken(&text, false))
                                                {
-                                                       if (!strcmp(com_token, "}"))
+                                                       if (!strcasecmp(com_token, "}"))
                                                                break;
-                                                       else if (!strcmp(com_token, "{"))
+                                                       else if (!strcasecmp(com_token, "{"))
                                                        {
                                                                while (COM_ParseToken(&text, false))
                                                                {
-                                                                       if (!strcmp(com_token, "}"))
+                                                                       if (!strcasecmp(com_token, "}"))
+                                                                               break;
+                                                                       if (!strcasecmp(com_token, "\n"))
+                                                                               continue;
+                                                                       numparameters = 0;
+                                                                       for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
+                                                                       {
+                                                                               if (j < 4)
+                                                                               {
+                                                                                       strlcpy(parameter[j], com_token, sizeof(parameter[j]));
+                                                                                       numparameters = j + 1;
+                                                                               }
+                                                                               if (!COM_ParseToken(&text, true))
+                                                                                       break;
+                                                                       }
+                                                                       if (developer.integer >= 2)
+                                                                       {
+                                                                               Con_Printf("%s %i: ", shadername, passnumber);
+                                                                               for (j = 0;j < numparameters;j++)
+                                                                                       Con_Printf(" %s", parameter[j]);
+                                                                               Con_Print("\n");
+                                                                       }
+                                                                       if (passnumber == 0 && numparameters >= 1)
+                                                                       {
+                                                                               if (!strcasecmp(parameter[0], "blendfunc"))
+                                                                               {
+                                                                                       if (numparameters == 2 && !strcasecmp(parameter[1], "add"))
+                                                                                               flags2 |= Q3TEXTUREFLAG_ADDITIVE;
+                                                                                       else if (numparameters == 3 && !strcasecmp(parameter[1], "gl_one") && !strcasecmp(parameter[2], "gl_one"))
+                                                                                               flags2 |= Q3TEXTUREFLAG_ADDITIVE;
+                                                                                       else if (numparameters == 3 && !strcasecmp(parameter[1], "gl_src_alpha") && !strcasecmp(parameter[2], "gl_one"))
+                                                                                               flags2 |= Q3TEXTUREFLAG_ADDITIVE;
+                                                                               }
+                                                                               else if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
+                                                                                       strlcpy(firstpasstexturename, parameter[1], sizeof(firstpasstexturename));
+                                                                               else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
+                                                                                       strlcpy(firstpasstexturename, parameter[2], sizeof(firstpasstexturename));
+                                                                       }
+                                                                       if (!strcasecmp(parameter[0], "alphafunc"))
+                                                                               flags2 |= Q3TEXTUREFLAG_ALPHATEST;
+                                                                       // break out a level if it was }
+                                                                       if (!strcasecmp(com_token, "}"))
                                                                                break;
                                                                }
+                                                               passnumber++;
+                                                               continue;
                                                        }
-                                                       else if (!strcmp(com_token, "surfaceparm"))
+                                                       numparameters = 0;
+                                                       for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
                                                        {
-                                                               if (COM_ParseToken(&text, true) && strcmp(com_token, "\n"))
+                                                               if (j < 4)
                                                                {
-                                                                       if (!strcmp(com_token, "alphashadow"))
-                                                                               flags |= Q3SURFACEPARM_ALPHASHADOW;
-                                                                       else if (!strcmp(com_token, "areaportal"))
-                                                                               flags |= Q3SURFACEPARM_AREAPORTAL;
-                                                                       else if (!strcmp(com_token, "clusterportal"))
-                                                                               flags |= Q3SURFACEPARM_CLUSTERPORTAL;
-                                                                       else if (!strcmp(com_token, "detail"))
-                                                                               flags |= Q3SURFACEPARM_DETAIL;
-                                                                       else if (!strcmp(com_token, "donotenter"))
-                                                                               flags |= Q3SURFACEPARM_DONOTENTER;
-                                                                       else if (!strcmp(com_token, "fog"))
-                                                                               flags |= Q3SURFACEPARM_FOG;
-                                                                       else if (!strcmp(com_token, "lava"))
-                                                                               flags |= Q3SURFACEPARM_LAVA;
-                                                                       else if (!strcmp(com_token, "lightfilter"))
-                                                                               flags |= Q3SURFACEPARM_LIGHTFILTER;
-                                                                       else if (!strcmp(com_token, "metalsteps"))
-                                                                               flags |= Q3SURFACEPARM_METALSTEPS;
-                                                                       else if (!strcmp(com_token, "nodamage"))
-                                                                               flags |= Q3SURFACEPARM_NODAMAGE;
-                                                                       else if (!strcmp(com_token, "nodlight"))
-                                                                               flags |= Q3SURFACEPARM_NODLIGHT;
-                                                                       else if (!strcmp(com_token, "nodraw"))
-                                                                               flags |= Q3SURFACEPARM_NODRAW;
-                                                                       else if (!strcmp(com_token, "nodrop"))
-                                                                               flags |= Q3SURFACEPARM_NODROP;
-                                                                       else if (!strcmp(com_token, "noimpact"))
-                                                                               flags |= Q3SURFACEPARM_NOIMPACT;
-                                                                       else if (!strcmp(com_token, "nolightmap"))
-                                                                               flags |= Q3SURFACEPARM_NOLIGHTMAP;
-                                                                       else if (!strcmp(com_token, "nomarks"))
-                                                                               flags |= Q3SURFACEPARM_NOMARKS;
-                                                                       else if (!strcmp(com_token, "nomipmaps"))
-                                                                               flags |= Q3SURFACEPARM_NOMIPMAPS;
-                                                                       else if (!strcmp(com_token, "nonsolid"))
-                                                                               flags |= Q3SURFACEPARM_NONSOLID;
-                                                                       else if (!strcmp(com_token, "origin"))
-                                                                               flags |= Q3SURFACEPARM_ORIGIN;
-                                                                       else if (!strcmp(com_token, "playerclip"))
-                                                                               flags |= Q3SURFACEPARM_PLAYERCLIP;
-                                                                       else if (!strcmp(com_token, "sky"))
-                                                                               flags |= Q3SURFACEPARM_SKY;
-                                                                       else if (!strcmp(com_token, "slick"))
-                                                                               flags |= Q3SURFACEPARM_SLICK;
-                                                                       else if (!strcmp(com_token, "slime"))
-                                                                               flags |= Q3SURFACEPARM_SLIME;
-                                                                       else if (!strcmp(com_token, "structural"))
-                                                                               flags |= Q3SURFACEPARM_STRUCTURAL;
-                                                                       else if (!strcmp(com_token, "trans"))
-                                                                               flags |= Q3SURFACEPARM_TRANS;
-                                                                       else if (!strcmp(com_token, "water"))
-                                                                               flags |= Q3SURFACEPARM_WATER;
-                                                                       else
-                                                                               Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[i], com_token);
-                                                                       if (!COM_ParseToken(&text, true) || strcmp(com_token, "\n"))
-                                                                       {
-                                                                               Con_Printf("%s parsing error: surfaceparm only takes one parameter.\n", search->filenames[i]);
-                                                                               goto parseerror;
-                                                                       }
+                                                                       strlcpy(parameter[j], com_token, sizeof(parameter[j]));
+                                                                       numparameters = j + 1;
                                                                }
+                                                               if (!COM_ParseToken(&text, true))
+                                                                       break;
+                                                       }
+                                                       if (i == 0 && !strcasecmp(com_token, "}"))
+                                                               break;
+                                                       if (developer.integer >= 2)
+                                                       {
+                                                               Con_Printf("%s: ", shadername);
+                                                               for (j = 0;j < numparameters;j++)
+                                                                       Con_Printf(" %s", parameter[j]);
+                                                               Con_Print("\n");
+                                                       }
+                                                       if (numparameters < 1)
+                                                               continue;
+                                                       if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
+                                                       {
+                                                               if (!strcasecmp(parameter[1], "alphashadow"))
+                                                                       flags |= Q3SURFACEPARM_ALPHASHADOW;
+                                                               else if (!strcasecmp(parameter[1], "areaportal"))
+                                                                       flags |= Q3SURFACEPARM_AREAPORTAL;
+                                                               else if (!strcasecmp(parameter[1], "clusterportal"))
+                                                                       flags |= Q3SURFACEPARM_CLUSTERPORTAL;
+                                                               else if (!strcasecmp(parameter[1], "detail"))
+                                                                       flags |= Q3SURFACEPARM_DETAIL;
+                                                               else if (!strcasecmp(parameter[1], "donotenter"))
+                                                                       flags |= Q3SURFACEPARM_DONOTENTER;
+                                                               else if (!strcasecmp(parameter[1], "fog"))
+                                                                       flags |= Q3SURFACEPARM_FOG;
+                                                               else if (!strcasecmp(parameter[1], "lava"))
+                                                                       flags |= Q3SURFACEPARM_LAVA;
+                                                               else if (!strcasecmp(parameter[1], "lightfilter"))
+                                                                       flags |= Q3SURFACEPARM_LIGHTFILTER;
+                                                               else if (!strcasecmp(parameter[1], "metalsteps"))
+                                                                       flags |= Q3SURFACEPARM_METALSTEPS;
+                                                               else if (!strcasecmp(parameter[1], "nodamage"))
+                                                                       flags |= Q3SURFACEPARM_NODAMAGE;
+                                                               else if (!strcasecmp(parameter[1], "nodlight"))
+                                                                       flags |= Q3SURFACEPARM_NODLIGHT;
+                                                               else if (!strcasecmp(parameter[1], "nodraw"))
+                                                                       flags |= Q3SURFACEPARM_NODRAW;
+                                                               else if (!strcasecmp(parameter[1], "nodrop"))
+                                                                       flags |= Q3SURFACEPARM_NODROP;
+                                                               else if (!strcasecmp(parameter[1], "noimpact"))
+                                                                       flags |= Q3SURFACEPARM_NOIMPACT;
+                                                               else if (!strcasecmp(parameter[1], "nolightmap"))
+                                                                       flags |= Q3SURFACEPARM_NOLIGHTMAP;
+                                                               else if (!strcasecmp(parameter[1], "nomarks"))
+                                                                       flags |= Q3SURFACEPARM_NOMARKS;
+                                                               else if (!strcasecmp(parameter[1], "nomipmaps"))
+                                                                       flags |= Q3SURFACEPARM_NOMIPMAPS;
+                                                               else if (!strcasecmp(parameter[1], "nonsolid"))
+                                                                       flags |= Q3SURFACEPARM_NONSOLID;
+                                                               else if (!strcasecmp(parameter[1], "origin"))
+                                                                       flags |= Q3SURFACEPARM_ORIGIN;
+                                                               else if (!strcasecmp(parameter[1], "playerclip"))
+                                                                       flags |= Q3SURFACEPARM_PLAYERCLIP;
+                                                               else if (!strcasecmp(parameter[1], "sky"))
+                                                                       flags |= Q3SURFACEPARM_SKY;
+                                                               else if (!strcasecmp(parameter[1], "slick"))
+                                                                       flags |= Q3SURFACEPARM_SLICK;
+                                                               else if (!strcasecmp(parameter[1], "slime"))
+                                                                       flags |= Q3SURFACEPARM_SLIME;
+                                                               else if (!strcasecmp(parameter[1], "structural"))
+                                                                       flags |= Q3SURFACEPARM_STRUCTURAL;
+                                                               else if (!strcasecmp(parameter[1], "trans"))
+                                                                       flags |= Q3SURFACEPARM_TRANS;
+                                                               else if (!strcasecmp(parameter[1], "water"))
+                                                                       flags |= Q3SURFACEPARM_WATER;
+                                                               else if (!strcasecmp(parameter[1], "pointlight"))
+                                                                       flags |= Q3SURFACEPARM_POINTLIGHT;
                                                                else
-                                                               {
-                                                                       Con_Printf("%s parsing error: surfaceparm expects a parameter.\n", search->filenames[i]);
-                                                                       goto parseerror;
-                                                               }
+                                                                       Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[i], parameter[1]);
                                                        }
-                                                       else
+                                                       else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
+                                                               strlcpy(sky, parameter[1], sizeof(sky));
+                                                       else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
                                                        {
-                                                               // look for linebreak or }
-                                                               while(COM_ParseToken(&text, true) && strcmp(com_token, "\n") && strcmp(com_token, "}"));
-                                                               // break out to top level if it was }
-                                                               if (!strcmp(com_token, "}"))
-                                                                       break;
+                                                               if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
+                                                                       strlcpy(sky, parameter[1], sizeof(sky));
+                                                       }
+                                                       else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
+                                                       {
+                                                               if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
+                                                                       flags2 |= Q3TEXTUREFLAG_TWOSIDED;
+                                                       }
+                                                       else if (!strcasecmp(parameter[0], "nomipmaps"))
+                                                               flags2 |= Q3TEXTUREFLAG_NOMIPMAPS;
+                                                       else if (!strcasecmp(parameter[0], "nopicmip"))
+                                                               flags2 |= Q3TEXTUREFLAG_NOPICMIP;
+                                                       else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
+                                                       {
+                                                               if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
+                                                                       flags2 |= Q3TEXTUREFLAG_AUTOSPRITE;
+                                                               if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
+                                                                       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++)
-                                                       if (!strcmp(out->name, shadername))
+                                               {
+                                                       if (!strcasecmp(out->name, shadername))
+                                                       {
                                                                out->surfaceparms = flags;
+                                                               out->textureflags = flags2;
+                                                               strlcpy(out->firstpasstexturename, firstpasstexturename, sizeof(out->firstpasstexturename));
+                                                               if ((flags & Q3SURFACEPARM_SKY) && sky[0])
+                                                               {
+                                                                       // quake3 seems to append a _ to the skybox name, so this must do so as well
+                                                                       dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", sky);
+                                                               }
+                                                       }
+                                               }
                                        }
                                        else
                                        {
@@ -3644,16 +3922,20 @@ parseerror:
                        Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
                        out->surfaceparms = 0;
                        // these are defaults
-                       if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
-                        || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
-                               out->surfaceparms |= Q3SURFACEPARM_NODRAW;
-                       if (!strncmp(out->name, "textures/skies/", 15))
-                               out->surfaceparms |= Q3SURFACEPARM_SKY;
-                       if (R_TextureHasAlpha(out->skin.base))
-                               out->surfaceparms |= Q3SURFACEPARM_TRANS;
+                       //if (!strncmp(out->name, "textures/skies/", 15))
+                       //      out->surfaceparms |= Q3SURFACEPARM_SKY;
+                       //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
+                       // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
+                       //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
+                       //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);
        }
-       Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
+       if (c)
+               Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
 }
 
 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
@@ -3715,7 +3997,6 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        q3mbrush_t *out;
        int i, j, n, c, count, maxplanes;
        mplane_t *planes;
-       winding_t *temp1, *temp2;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
@@ -3726,9 +4007,6 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
        loadmodel->brushq3.data_brushes = out;
        loadmodel->brushq3.num_brushes = count;
 
-       temp1 = Winding_New(64);
-       temp2 = Winding_New(64);
-
        maxplanes = 0;
        planes = NULL;
 
@@ -3759,12 +4037,10 @@ static void Mod_Q3BSP_LoadBrushes(lump_t *l)
                        planes[j].dist = out->firstbrushside[j].plane->dist;
                }
                // make the colbrush from the planes
-               out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, temp1, temp2);
+               out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
        }
        if (planes)
                Mem_Free(planes);
-       Winding_Free(temp1);
-       Winding_Free(temp2);
 }
 
 static void Mod_Q3BSP_LoadEffects(lump_t *l)
@@ -3886,9 +4162,9 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
 
 static void Mod_Q3BSP_LoadFaces(lump_t *l)
 {
-       q3dface_t *in;
-       q3mface_t *out;
-       int i, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xlevel, ylevel, row0, row1, x, y, *e, finalvertices, finaltriangles;
+       q3dface_t *in, *oldin;
+       q3msurface_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;
        float *originalvertex3f;
@@ -3899,6 +4175,7 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        float *originaltexcoordtexture2f;
        float *originaltexcoordlightmap2f;
        float *v;
+       surfmesh_t *mesh, *tempmeshlist[1024];
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
@@ -3909,323 +4186,312 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        loadmodel->brushq3.data_faces = out;
        loadmodel->brushq3.num_faces = count;
 
-       for (i = 0;i < count;i++, in++, out++)
-       {
-               // check face type first
-               out->type = LittleLong(in->type);
-               if (out->type != Q3FACETYPE_POLYGON
-                && out->type != Q3FACETYPE_PATCH
-                && out->type != Q3FACETYPE_MESH
-                && out->type != Q3FACETYPE_FLARE)
+       i = 0;
+       for (meshnum = 0;i < count;meshnum++)
+       {
+               oldi = i;
+               oldin = in;
+               oldout = out;
+               meshvertices = 0;
+               meshtriangles = 0;
+               for (;i < count;i++, in++, out++)
                {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, out->type);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0; // error
-                       continue;
-               }
+                       // check face type first
+                       type = LittleLong(in->type);
+                       if (type != Q3FACETYPE_POLYGON
+                        && type != Q3FACETYPE_PATCH
+                        && type != Q3FACETYPE_MESH
+                        && type != Q3FACETYPE_FLARE)
+                       {
+                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
+                               continue;
+                       }
 
-               n = LittleLong(in->textureindex);
-               if (n < 0 || n >= loadmodel->brushq3.num_textures)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->brushq3.num_textures);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0; // error
-                       continue;
-                       n = 0;
-               }
-               out->texture = loadmodel->brushq3.data_textures + n;
-               n = LittleLong(in->effectindex);
-               if (n < -1 || n >= loadmodel->brushq3.num_effects)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
-                       n = -1;
-               }
-               if (n == -1)
-                       out->effect = NULL;
-               else
-                       out->effect = loadmodel->brushq3.data_effects + n;
-               n = LittleLong(in->lightmapindex);
-               if (n < -1 || n >= loadmodel->brushq3.num_lightmaps)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
-                       n = -1;
-               }
-               if (n == -1)
-                       out->lightmaptexture = NULL;
-               else
-                       out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
+                       n = LittleLong(in->textureindex);
+                       if (n < 0 || n >= loadmodel->brushq3.num_textures)
+                       {
+                               Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->brushq3.num_textures);
+                               continue;
+                       }
+                       out->texture = loadmodel->brushq3.data_textures + n;
+                       n = LittleLong(in->effectindex);
+                       if (n < -1 || n >= loadmodel->brushq3.num_effects)
+                       {
+                               if (developer.integer >= 2)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
+                               n = -1;
+                       }
+                       if (n == -1)
+                               out->effect = NULL;
+                       else
+                               out->effect = loadmodel->brushq3.data_effects + n;
+                       n = LittleLong(in->lightmapindex);
+                       if (n >= loadmodel->brushq3.num_lightmaps)
+                       {
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
+                               n = -1;
+                       }
+                       else if (n < 0)
+                               n = -1;
+                       if (n == -1)
+                               out->lightmaptexture = NULL;
+                       else
+                               out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
 
-               out->firstvertex = LittleLong(in->firstvertex);
-               out->num_vertices = LittleLong(in->numvertices);
-               out->firstelement = LittleLong(in->firstelement);
-               out->num_triangles = LittleLong(in->numelements) / 3;
-               if (out->num_triangles * 3 != LittleLong(in->numelements))
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0; // error
-                       continue;
-               }
-               if (out->firstvertex < 0 || out->firstvertex + out->num_vertices > loadmodel->brushq3.num_vertices)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, out->firstvertex, out->firstvertex + out->num_vertices, loadmodel->brushq3.num_vertices);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0; // error
-                       continue;
-               }
-               if (out->firstelement < 0 || out->firstelement + out->num_triangles * 3 > loadmodel->brushq3.num_triangles * 3)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, out->firstelement, out->firstelement + out->num_triangles * 3, loadmodel->brushq3.num_triangles * 3);
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0; // error
-                       continue;
-               }
-               switch(out->type)
-               {
-               case Q3FACETYPE_POLYGON:
-               case Q3FACETYPE_MESH:
-                       // no processing necessary
-                       out->data_vertex3f = loadmodel->brushq3.data_vertex3f + out->firstvertex * 3;
-                       out->data_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + out->firstvertex * 2;
-                       out->data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + out->firstvertex * 2;
-                       out->data_svector3f = loadmodel->brushq3.data_svector3f + out->firstvertex * 3;
-                       out->data_tvector3f = loadmodel->brushq3.data_tvector3f + out->firstvertex * 3;
-                       out->data_normal3f = loadmodel->brushq3.data_normal3f + out->firstvertex * 3;
-                       out->data_color4f = loadmodel->brushq3.data_color4f + out->firstvertex * 4;
-                       out->data_element3i = loadmodel->brushq3.data_element3i + out->firstelement;
-                       out->data_neighbor3i = loadmodel->brushq3.data_neighbor3i + out->firstelement;
-                       break;
-               case Q3FACETYPE_PATCH:
-                       patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
-                       patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
-                       if (patchsize[0] < 1 || patchsize[1] < 1)
+                       firstvertex = LittleLong(in->firstvertex);
+                       numvertices = LittleLong(in->numvertices);
+                       firstelement = LittleLong(in->firstelement);
+                       numtriangles = LittleLong(in->numelements) / 3;
+                       if (numtriangles * 3 != LittleLong(in->numelements))
                        {
-                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
-                               out->num_vertices = 0;
-                               out->num_triangles = 0;
-                               out->type = 0; // error
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
                                continue;
                        }
-                       // convert patch to Q3FACETYPE_MESH
-                       xlevel = mod_q3bsp_curves_subdivide_level.integer;
-                       ylevel = mod_q3bsp_curves_subdivide_level.integer;
-                       finalwidth = ((patchsize[0] - 1) << xlevel) + 1;
-                       finalheight = ((patchsize[1] - 1) << ylevel) + 1;
-                       finalvertices = finalwidth * finalheight;
-                       finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
-                       originalvertex3f = loadmodel->brushq3.data_vertex3f + out->firstvertex * 3;
-                       //originalsvector3f = loadmodel->brushq3.data_svector3f + out->firstvertex * 3;
-                       //originaltvector3f = loadmodel->brushq3.data_tvector3f + out->firstvertex * 3;
-                       //originalnormal3f = loadmodel->brushq3.data_normal3f + out->firstvertex * 3;
-                       originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + out->firstvertex * 2;
-                       originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + out->firstvertex * 2;
-                       originalcolor4f = loadmodel->brushq3.data_color4f + out->firstvertex * 4;
-                       //originalelement3i = loadmodel->brushq3.data_element3i + out->firstelement;
-                       //originalneighbor3i = loadmodel->brushq3.data_neighbor3i + out->firstelement;
-                       /*
-                       originalvertex3f = out->data_vertex3f;
-                       //originalsvector3f = out->data_svector3f;
-                       //originaltvector3f = out->data_tvector3f;
-                       //originalnormal3f = out->data_normal3f;
-                       originalcolor4f = out->data_color4f;
-                       originaltexcoordtexture2f = out->data_texcoordtexture2f;
-                       originaltexcoordlightmap2f = out->data_texcoordlightmap2f;
-                       //originalelement3i = out->data_element3i;
-                       //originalneighbor3i = out->data_neighbor3i;
-                       */
-                       out->data_vertex3f = Mem_Alloc(loadmodel->mempool, sizeof(float[20]) * finalvertices);
-                       out->data_svector3f = out->data_vertex3f + finalvertices * 3;
-                       out->data_tvector3f = out->data_svector3f + finalvertices * 3;
-                       out->data_normal3f = out->data_tvector3f + finalvertices * 3;
-                       out->data_color4f = out->data_normal3f + finalvertices * 3;
-                       out->data_texcoordtexture2f = out->data_color4f + finalvertices * 4;
-                       out->data_texcoordlightmap2f = out->data_texcoordtexture2f + finalvertices * 2;
-                       out->data_element3i = Mem_Alloc(loadmodel->mempool, sizeof(int[6]) * finaltriangles);
-                       out->data_neighbor3i = out->data_element3i + finaltriangles * 3;
-                       out->type = Q3FACETYPE_MESH;
-                       out->firstvertex = -1;
-                       out->num_vertices = finalvertices;
-                       out->firstelement = -1;
-                       out->num_triangles = finaltriangles;
-                       // generate geometry
-                       // (note: normals are skipped because they get recalculated)
-                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 3, originalvertex3f, out->data_vertex3f);
-                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 2, originaltexcoordtexture2f, out->data_texcoordtexture2f);
-                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 2, originaltexcoordlightmap2f, out->data_texcoordlightmap2f);
-                       QuadraticSplinePatchSubdivideFloatBuffer(patchsize[0], patchsize[1], xlevel, ylevel, 4, originalcolor4f, out->data_color4f);
-                       // generate elements
-                       e = out->data_element3i;
-                       for (y = 0;y < finalheight - 1;y++)
+                       if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
                        {
-                               row0 = (y + 0) * finalwidth;
-                               row1 = (y + 1) * finalwidth;
-                               for (x = 0;x < finalwidth - 1;x++)
-                               {
-                                       *e++ = row0;
-                                       *e++ = row1;
-                                       *e++ = row0 + 1;
-                                       *e++ = row1;
-                                       *e++ = row1 + 1;
-                                       *e++ = row0 + 1;
-                                       row0++;
-                                       row1++;
-                               }
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
+                               continue;
                        }
-                       out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, out->data_element3i, out->data_element3i, out->data_vertex3f);
-                       if (developer.integer)
+                       if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
                        {
-                               if (out->num_triangles < finaltriangles)
-                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
-                               else
-                                       Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
+                               Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
+                               continue;
                        }
-                       // q3map does not put in collision brushes for curves... ugh
-                       out->collisions = true;
-                       break;
-               case Q3FACETYPE_FLARE:
-                       Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
-                       // don't render it
-                       out->num_vertices = 0;
-                       out->num_triangles = 0;
-                       out->type = 0;
-                       break;
-               }
-               for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
-                       if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
-                               invalidelements++;
-               if (invalidelements)
-               {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, texture->nativecontents = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, out->type, out->texture->name, out->texture->surfaceflags, out->texture->nativecontents, out->firstvertex, out->num_vertices, out->firstelement, out->num_triangles * 3);
-                       for (j = 0;j < out->num_triangles * 3;j++)
+                       switch(type)
                        {
-                               Con_Printf(" %i", out->data_element3i[j]);
-                               if (out->data_element3i[j] < 0 || out->data_element3i[j] >= out->num_vertices)
-                                       out->data_element3i[j] = 0;
+                       case Q3FACETYPE_POLYGON:
+                       case Q3FACETYPE_MESH:
+                               // no processing necessary
+                               break;
+                       case Q3FACETYPE_PATCH:
+                               patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
+                               patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
+                               if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
+                               {
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
+                                       continue;
+                               }
+                               originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
+                               // convert patch to Q3FACETYPE_MESH
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
+                               ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               numvertices = finalwidth * finalheight;
+                               numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+                               break;
+                       case Q3FACETYPE_FLARE:
+                               if (developer.integer >= 2)
+                                       Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
+                               // don't render it
+                               continue;
                        }
-                       Con_Printf("\n");
+                       out->mesh.num_vertices = numvertices;
+                       out->mesh.num_triangles = numtriangles;
+                       if (meshvertices + out->mesh.num_vertices > 65536)
+                               break;
+                       meshvertices += out->mesh.num_vertices;
+                       meshtriangles += out->mesh.num_triangles;
                }
-               // for shadow volumes
-               Mod_BuildTriangleNeighbors(out->data_neighbor3i, out->data_element3i, out->num_triangles);
-               // for per pixel lighting
-               Mod_BuildTextureVectorsAndNormals(out->num_vertices, out->num_triangles, out->data_vertex3f, out->data_texcoordtexture2f, out->data_element3i, out->data_svector3f, out->data_tvector3f, out->data_normal3f);
-               // calculate a bounding box
-               VectorClear(out->mins);
-               VectorClear(out->maxs);
-               if (out->num_vertices)
+
+               i = oldi;
+               in = oldin;
+               out = oldout;
+               mesh = tempmeshlist[meshnum] = Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, 0, 0, false, false, true);
+               meshvertices = 0;
+               meshtriangles = 0;
+               for (;i < count && meshvertices + out->mesh.num_vertices <= mesh->num_vertices;i++, in++, out++)
                {
-                       VectorCopy(out->data_vertex3f, out->mins);
-                       VectorCopy(out->data_vertex3f, out->maxs);
-                       for (j = 1, v = out->data_vertex3f + 3;j < out->num_vertices;j++, v += 3)
+                       if (out->mesh.num_vertices < 3 || out->mesh.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;
+                       switch(type)
+                       {
+                       case Q3FACETYPE_POLYGON:
+                       case Q3FACETYPE_MESH:
+                               // no processing necessary
+                               for (j = 0;j < out->mesh.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];
+                               }
+                               for (j = 0;j < out->mesh.num_triangles*3;j++)
+                                       out->mesh.data_element3i[j] = loadmodel->brushq3.data_element3i[firstelement + j];
+                               break;
+                       case Q3FACETYPE_PATCH:
+                               patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
+                               patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
+                               originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
+                               originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
+                               originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
+                               originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
+                               // convert patch to Q3FACETYPE_MESH
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
+                               ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               finalvertices = finalwidth * finalheight;
+                               finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
+                               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);
+                               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);
+                                       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);
+                               }
+                               // q3map does not put in collision brushes for curves... ugh
+                               // build the lower quality collision geometry
+                               xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
+                               ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
+                               // bound to user settings
+                               xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
+                               ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
+                               // bound to sanity settings
+                               xtess = bound(1, xtess, 1024);
+                               ytess = bound(1, ytess, 1024);
+                               // bound to user limit on vertices
+                               while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
+                               {
+                                       if (xtess > ytess)
+                                               xtess--;
+                                       else
+                                               ytess--;
+                               }
+                               finalwidth = ((patchsize[0] - 1) * xtess) + 1;
+                               finalheight = ((patchsize[1] - 1) * ytess) + 1;
+                               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);
+
+                               //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);
+
+                               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);
+                               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);
+                               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)
+                                       invalidelements++;
+                       if (invalidelements)
                        {
-                               out->mins[0] = min(out->mins[0], v[0]);
-                               out->maxs[0] = max(out->maxs[0], v[0]);
-                               out->mins[1] = min(out->mins[1], v[1]);
-                               out->maxs[1] = max(out->maxs[1], v[1]);
-                               out->mins[2] = min(out->mins[2], v[2]);
-                               out->maxs[2] = max(out->maxs[2], v[2]);
+                               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(" %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_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);
+                       // calculate a bounding box
+                       VectorClear(out->mins);
+                       VectorClear(out->maxs);
+                       if (out->mesh.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)
+                               {
+                                       out->mins[0] = min(out->mins[0], v[0]);
+                                       out->maxs[0] = max(out->maxs[0], v[0]);
+                                       out->mins[1] = min(out->mins[1], v[1]);
+                                       out->maxs[1] = max(out->maxs[1], v[1]);
+                                       out->mins[2] = min(out->mins[2], v[2]);
+                                       out->maxs[2] = max(out->maxs[2], v[2]);
+                               }
+                               out->mins[0] -= 1.0f;
+                               out->mins[1] -= 1.0f;
+                               out->mins[2] -= 1.0f;
+                               out->maxs[0] += 1.0f;
+                               out->maxs[1] += 1.0f;
+                               out->maxs[2] += 1.0f;
                        }
-                       out->mins[0] -= 1.0f;
-                       out->mins[1] -= 1.0f;
-                       out->mins[2] -= 1.0f;
-                       out->maxs[0] += 1.0f;
-                       out->maxs[1] += 1.0f;
-                       out->maxs[2] += 1.0f;
                }
        }
 
-       // LordHavoc: experimental array merger (disabled because it wastes time and uses 2x memory while merging)
-       /*
+       // now store the completed list of meshes
+       loadmodel->nummeshes = meshnum;
+       if (loadmodel->nummeshes)
        {
-       int totalverts, totaltris;
-       int originalnum_vertices;
-       float *originaldata_vertex3f;
-       float *originaldata_texcoordtexture2f;
-       float *originaldata_texcoordlightmap2f;
-       float *originaldata_svector3f;
-       float *originaldata_tvector3f;
-       float *originaldata_normal3f;
-       float *originaldata_color4f;
-       int originalnum_triangles;
-       int *originaldata_element3i;
-       int *originaldata_neighbor3i;
-
-       totalverts = 0;
-       totaltris = 0;
-       for (i = 0, out = loadmodel->brushq3.data_faces;i < count;i++, out++)
-       {
-               if (!out->type)
-                       continue;
-               totalverts += out->num_vertices;
-               totaltris += out->num_triangles;
-       }
-
-       originalnum_vertices = loadmodel->brushq3.num_vertices;
-       originaldata_vertex3f = loadmodel->brushq3.data_vertex3f;
-       originaldata_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f;
-       originaldata_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f;
-       originaldata_svector3f = loadmodel->brushq3.data_svector3f;
-       originaldata_tvector3f = loadmodel->brushq3.data_tvector3f;
-       originaldata_normal3f = loadmodel->brushq3.data_normal3f;
-       originaldata_color4f = loadmodel->brushq3.data_color4f;
-       originalnum_triangles = loadmodel->brushq3.num_triangles;
-       originaldata_element3i = loadmodel->brushq3.data_element3i;
-       originaldata_neighbor3i = loadmodel->brushq3.data_neighbor3i;
-       loadmodel->brushq3.num_vertices = totalverts;
-       loadmodel->brushq3.data_vertex3f = Mem_Alloc(loadmodel->mempool, totalverts * (sizeof(float) * (3 + 2 + 2 + 3 + 3 + 3 + 4)) + totaltris * (sizeof(int) * (3 * 2)));
-       loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_vertex3f + totalverts * 3;
-       loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + totalverts * 2;
-       loadmodel->brushq3.data_svector3f = loadmodel->brushq3.data_texcoordlightmap2f + totalverts * 2;
-       loadmodel->brushq3.data_tvector3f = loadmodel->brushq3.data_svector3f + totalverts * 3;
-       loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_tvector3f + totalverts * 3;
-       loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_normal3f + totalverts * 3;
-       loadmodel->brushq3.num_triangles = totaltris;
-       loadmodel->brushq3.data_element3i = (int *)(loadmodel->brushq3.data_color4f + totalverts * 4);
-       loadmodel->brushq3.data_neighbor3i = loadmodel->brushq3.data_element3i + totaltris * 3;
-       totalverts = 0;
-       totaltris = 0;
-       for (i = 0, out = loadmodel->brushq3.data_faces;i < count;i++, out++)
-       {
-               if (!out->type)
-                       continue;
-               Con_Printf("totalverts %i, totaltris %i\n", totalverts, totaltris);
-               memcpy(loadmodel->brushq3.data_vertex3f + totalverts * 3, out->data_vertex3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_texcoordtexture2f + totalverts * 2, out->data_texcoordtexture2f, out->num_vertices * 2 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_texcoordlightmap2f + totalverts * 2, out->data_texcoordlightmap2f, out->num_vertices * 2 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_svector3f + totalverts * 3, out->data_svector3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_tvector3f + totalverts * 3, out->data_tvector3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_normal3f + totalverts * 3, out->data_normal3f, out->num_vertices * 3 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_color4f + totalverts * 4, out->data_color4f, out->num_vertices * 4 * sizeof(float));
-               memcpy(loadmodel->brushq3.data_element3i + totaltris * 3, out->data_element3i, out->num_triangles * 3 * sizeof(int));
-               memcpy(loadmodel->brushq3.data_neighbor3i + totaltris * 3, out->data_neighbor3i, out->num_triangles * 3 * sizeof(int));
-               if (out->firstvertex == -1)
-                       Mem_Free(out->data_vertex3f);
-               if (out->firstelement == -1)
-                       Mem_Free(out->data_element3i);
-               out->firstvertex = totalverts;
-               out->data_vertex3f = loadmodel->brushq3.data_vertex3f + out->firstvertex * 3;
-               out->data_texcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + out->firstvertex * 2;
-               out->data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + out->firstvertex * 2;
-               out->data_svector3f = loadmodel->brushq3.data_svector3f + out->firstvertex * 3;
-               out->data_tvector3f = loadmodel->brushq3.data_tvector3f + out->firstvertex * 3;
-               out->data_normal3f = loadmodel->brushq3.data_normal3f + out->firstvertex * 3;
-               out->data_color4f = loadmodel->brushq3.data_color4f + out->firstvertex * 4;
-               out->firstelement = totaltris * 3;
-               out->data_element3i = loadmodel->brushq3.data_element3i + out->firstelement;
-               out->data_neighbor3i = loadmodel->brushq3.data_neighbor3i + out->firstelement;
-               //for (j = 0;j < out->numtriangles * 3;j++)
-               //      out->data_element3i[j] += totalverts - out->firstvertex;
-               totalverts += out->num_vertices;
-               totaltris += out->num_triangles;
-       }
-       Mem_Free(originaldata_vertex3f);
-       Mem_Free(originaldata_element3i);
+               loadmodel->meshlist = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t *) * loadmodel->nummeshes);
+               memcpy(loadmodel->meshlist, tempmeshlist, sizeof(surfmesh_t *) * loadmodel->nummeshes);
        }
-       */
 }
 
 static void Mod_Q3BSP_LoadModels(lump_t *l)
@@ -4292,7 +4558,7 @@ static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
 {
        int *in;
-       q3mface_t **out;
+       q3msurface_t **out;
        int i, n, count;
 
        in = (void *)(mod_base + l->fileofs);
@@ -4304,12 +4570,15 @@ static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
        loadmodel->brushq3.data_leaffaces = out;
        loadmodel->brushq3.num_leaffaces = count;
 
+       loadmodel->brushq3.data_leaffacenums = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+
        for (i = 0;i < count;i++, in++, out++)
        {
                n = LittleLong(*in);
                if (n < 0 || n >= loadmodel->brushq3.num_faces)
                        Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)\n", n, loadmodel->brushq3.num_faces);
                *out = loadmodel->brushq3.data_faces + n;
+               loadmodel->brushq3.data_leaffacenums[i] = n;
        }
 }
 
@@ -4345,6 +4614,7 @@ static void Mod_Q3BSP_LoadLeafs(lump_t *l)
                if (n < 0 || n + c > loadmodel->brushq3.num_leaffaces)
                        Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafface range %i : %i (%i leaffaces)\n", n, n + c, loadmodel->brushq3.num_leaffaces);
                out->firstleafface = loadmodel->brushq3.data_leaffaces + n;
+               out->firstleaffacenum = loadmodel->brushq3.data_leaffacenums + n;
                out->numleaffaces = c;
                n = LittleLong(in->firstleafbrush);
                c = LittleLong(in->numleafbrushes);
@@ -4424,9 +4694,6 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        q3dlightgrid_t *out;
        int count;
 
-       if (l->filelen == 0)
-               return;
-
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
@@ -4443,17 +4710,37 @@ 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];
-       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);
+       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
-       memcpy(out, in, count * (int)sizeof(*out));
+       if (l->filelen)
+               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]);
@@ -4465,22 +4752,36 @@ static void Mod_Q3BSP_LoadPVS(lump_t *l)
        int totalchains;
 
        if (l->filelen == 0)
+       {
+               int i;
+               // unvised maps often have cluster indices even without pvs, so check
+               // leafs to find real number of clusters
+               loadmodel->brush.num_pvsclusters = 1;
+               for (i = 0;i < loadmodel->brushq3.num_leafs;i++)
+                       loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brushq3.data_leafs[i].clusterindex + 1);
+
+               // create clusters
+               loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
+               totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
+               loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, totalchains);
+               memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
                return;
+       }
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen < 9)
                Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
 
-       loadmodel->brushq3.num_pvsclusters = LittleLong(in->numclusters);
-       loadmodel->brushq3.num_pvschainlength = LittleLong(in->chainlength);
-       if (loadmodel->brushq3.num_pvschainlength < ((loadmodel->brushq3.num_pvsclusters + 7) / 8))
-               Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8\n", loadmodel->brushq3.num_pvschainlength, loadmodel->brushq3.num_pvsclusters);
-       totalchains = loadmodel->brushq3.num_pvschainlength * loadmodel->brushq3.num_pvsclusters;
+       loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
+       loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
+       if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
+               Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8\n", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
+       totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
        if (l->filelen < totalchains + (int)sizeof(*in))
-               Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)\n", loadmodel->brushq3.num_pvsclusters, loadmodel->brushq3.num_pvschainlength, totalchains + sizeof(*in), l->filelen);
+               Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)\n", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, totalchains + sizeof(*in), l->filelen);
 
-       loadmodel->brushq3.data_pvschains = Mem_Alloc(loadmodel->mempool, totalchains);
-       memcpy(loadmodel->brushq3.data_pvschains, (qbyte *)(in + 1), totalchains);
+       loadmodel->brush.data_pvsclusters = Mem_Alloc(loadmodel->mempool, totalchains);
+       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)
@@ -4574,7 +4875,7 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
        int i, startside, endside;
        float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
        q3mleaf_t *leaf;
-       q3mface_t *face;
+       q3msurface_t *face;
        colbrushf_t *brush;
        if (startfrac > trace->realfraction)
                return;
@@ -4640,10 +4941,10 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
                for (i = 0;i < leaf->numleaffaces;i++)
                {
                        face = leaf->firstleafface[i];
-                       if (face->collisions && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       if (face->mesh.num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
                        {
                                face->collisionmarkframe = markframe;
-                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, face->mesh.num_collisiontriangles, face->mesh.data_collisionelement3i, face->mesh.data_collisionvertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
                                if (startfrac > trace->realfraction)
                                        return;
                        }
@@ -4653,11 +4954,12 @@ static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, q3mnode_t *node
 
 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
 {
-       int i, sides;
+       int i;
+       //int sides;
        float nodesegmentmins[3], nodesegmentmaxs[3];
        q3mleaf_t *leaf;
        colbrushf_t *brush;
-       q3mface_t *face;
+       q3msurface_t *face;
        /*
                // find which nodes the line is in and recurse for them
                while (node->plane)
@@ -4727,7 +5029,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                        if (dist1near >= 0 && dist2near >= 0 && dist1far <  0 && dist2far >= 0){node = node->children[0];continue;}
                        if (dist1near >= 0 && dist2near >= 0 && dist1far >= 0 && dist2far <  0){node = node->children[0];continue;}
                        if (dist1near >= 0 && dist2near >= 0 && dist1far >= 0 && dist2far >= 0){node = node->children[0];continue;}
-                       {             
+                       {
                                if (dist2near < 0) // d1n<0 && d2n<0
                                {
                                        if (dist2near < 0) // d1n<0 && d2n<0
@@ -4873,6 +5175,23 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                        }
                }
        */
+#if 1
+       for (;;)
+       {
+               nodesegmentmins[0] = max(segmentmins[0], node->mins[0]);
+               nodesegmentmins[1] = max(segmentmins[1], node->mins[1]);
+               nodesegmentmins[2] = max(segmentmins[2], node->mins[2]);
+               nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0]);
+               nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1]);
+               nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2]);
+               if (nodesegmentmins[0] > nodesegmentmaxs[0] || nodesegmentmins[1] > nodesegmentmaxs[1] || nodesegmentmins[2] > nodesegmentmaxs[2])
+                       return;
+               if (!node->plane)
+                       break;
+               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+               node = node->children[1];
+       }
+#elif 0
        // FIXME: could be made faster by copying TraceLine code and making it use
        // box plane distances...  (variant on the BoxOnPlaneSide code)
        for (;;)
@@ -4891,11 +5210,69 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                {
                        Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
                        node = node->children[1];
+                       continue;
                }
                else if (mod_q3bsp_debugtracebrush.integer == 1)
                {
                        // recurse down node sides
-                       sides = BoxOnPlaneSide(segmentmins, segmentmaxs, node->plane);
+                       sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, node->plane);
+                       if (sides == 3)
+                       {
+                               // segment box crosses plane
+                               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+                               node = node->children[1];
+                               continue;
+                       }
+                       // take whichever side the segment box is on
+                       node = node->children[sides - 1];
+                       continue;
+               }
+               else
+               {
+                       // recurse down node sides
+                       sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, node->plane);
+                       if (sides == 3)
+                       {
+                               // segment box crosses plane
+                               // now check start and end brush boxes to handle a lot of 'diagonal' cases more efficiently...
+                               sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, node->plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, node->plane);
+                               if (sides == 3)
+                               {
+                                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+                                       node = node->children[1];
+                                       continue;
+                               }
+                       }
+                       // take whichever side the segment box is on
+                       node = node->children[sides - 1];
+                       continue;
+               }
+               return;
+       }
+#else
+       // FIXME: could be made faster by copying TraceLine code and making it use
+       // box plane distances...  (variant on the BoxOnPlaneSide code)
+       for (;;)
+       {
+               nodesegmentmins[0] = max(segmentmins[0], node->mins[0]);
+               nodesegmentmins[1] = max(segmentmins[1], node->mins[1]);
+               nodesegmentmins[2] = max(segmentmins[2], node->mins[2]);
+               nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0]);
+               nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1]);
+               nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2]);
+               if (nodesegmentmins[0] > nodesegmentmaxs[0] || nodesegmentmins[1] > nodesegmentmaxs[1] || nodesegmentmins[2] > nodesegmentmaxs[2])
+                       return;
+               if (!node->plane)
+                       break;
+               if (mod_q3bsp_debugtracebrush.integer == 2)
+               {
+                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
+                       node = node->children[1];
+               }
+               else if (mod_q3bsp_debugtracebrush.integer == 1)
+               {
+                       // recurse down node sides
+                       sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, node->plane);
                        if (sides == 3)
                        {
                                // segment box crosses plane
@@ -4911,7 +5288,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                else
                {
                        // recurse down node sides
-                       sides = BoxOnPlaneSide(segmentmins, segmentmaxs, node->plane);
+                       sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, node->plane);
                        if (sides == 3)
                        {
                                // segment box crosses plane
@@ -4927,6 +5304,7 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                        node = node->children[sides - 1];
                }
        }
+#endif
        // hit a leaf
        leaf = (q3mleaf_t *)node;
        for (i = 0;i < leaf->numleafbrushes;i++)
@@ -4943,10 +5321,10 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, q3mnode_t *nod
                for (i = 0;i < leaf->numleaffaces;i++)
                {
                        face = leaf->firstleafface[i];
-                       if (face->collisions && face->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
+                       if (face->mesh.num_collisiontriangles && face->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, face->mins, face->maxs))
                        {
-                               face->markframe = markframe;
-                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                               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);
                        }
                }
        }
@@ -4959,7 +5337,7 @@ 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;
-       q3mface_t *face;
+       q3msurface_t *face;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->realfraction = 1;
@@ -4999,8 +5377,8 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                                        for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
                                        {
                                                face = model->brushq3.data_thismodel->firstface + i;
-                                               if (face->collisions)
-                                                       Collision_TraceLineTriangleMeshFloat(trace, boxstartmins, boxendmins, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                                               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);
                                        }
                                }
                        }
@@ -5023,8 +5401,8 @@ static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const
                                for (i = 0;i < model->brushq3.data_thismodel->numfaces;i++)
                                {
                                        face = model->brushq3.data_thismodel->firstface + i;
-                                       if (face->collisions)
-                                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, face->num_triangles, face->data_element3i, face->data_vertex3f, face->texture->supercontents, segmentmins, segmentmaxs);
+                                       if (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);
                                }
                        }
                }
@@ -5038,7 +5416,7 @@ static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
        int clusterindex, side, nodestackindex = 0;
        q3mnode_t *node, *nodestack[1024];
        node = model->brushq3.data_nodes;
-       if (!loadmodel->brushq3.num_pvsclusters)
+       if (!model->brush.num_pvsclusters)
                return true;
        for (;;)
        {
@@ -5054,7 +5432,8 @@ static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
                        else
                        {
                                // box crosses plane, take one path and remember the other
-                               nodestack[nodestackindex++] = node->children[0];
+                               if (nodestackindex < 1024)
+                                       nodestack[nodestackindex++] = node->children[0];
                                node = node->children[1];
                        }
                }
@@ -5063,13 +5442,13 @@ static int Mod_Q3BSP_BoxTouchingPVS(model_t *model, const qbyte *pvs, const vec3
                        // leaf - check cluster bit
                        clusterindex = ((q3mleaf_t *)node)->clusterindex;
 #if 0
-                       if (clusterindex >= loadmodel->brushq3.num_pvsclusters)
+                       if (clusterindex >= model->brush.num_pvsclusters)
                        {
-                               Con_Printf("%i >= %i\n", clusterindex, loadmodel->brushq3.num_pvsclusters);
+                               Con_Printf("%i >= %i\n", clusterindex, model->brush.num_pvsclusters);
                                return true;
                        }
 #endif
-                       if (clusterindex < 0 || (pvs[clusterindex >> 3] & (1 << (clusterindex & 7))))
+                       if (CHECKPVSBIT(pvs, clusterindex))
                        {
                                // it is visible, return immediately with the news
                                return true;
@@ -5097,20 +5476,16 @@ static qbyte *Mod_Q3BSP_GetPVS(model_t *model, const vec3_t p)
        while (node->plane)
                node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
        if (((q3mleaf_t *)node)->clusterindex >= 0)
-               return model->brushq3.data_pvschains + ((q3mleaf_t *)node)->clusterindex * model->brushq3.num_pvschainlength;
+               return model->brush.data_pvsclusters + ((q3mleaf_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, q3mnode_t *node)
 {
-       int i;
-       float d;
-       qbyte *pvs;
-
        while (node->plane)
        {
-               d = PlaneDiff(org, node->plane);
+               float d = PlaneDiff(org, node->plane);
                if (d > radius)
                        node = node->children[0];
                else if (d < -radius)
@@ -5122,25 +5497,23 @@ static void Mod_Q3BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org,
                        node = node->children[1];
                }
        }
-       // if this is a leaf with a pvs, accumulate the pvs bits
+       // if this leaf is in a cluster, accumulate the pvs bits
        if (((q3mleaf_t *)node)->clusterindex >= 0)
        {
-               pvs = model->brushq3.data_pvschains + ((q3mleaf_t *)node)->clusterindex * model->brushq3.num_pvschainlength;
+               int i;
+               qbyte *pvs = model->brush.data_pvsclusters + ((q3mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
                for (i = 0;i < pvsbytes;i++)
                        pvsbuffer[i] |= pvs[i];
        }
-       else
-               memset(pvsbuffer, 0xFF, pvsbytes);
-       return;
 }
 
 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
 //of the given point.
 static int Mod_Q3BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyte *pvsbuffer, int pvsbufferlength)
 {
-       int bytes = model->brushq3.num_pvschainlength;
+       int bytes = model->brush.num_pvsclusterbytes;
        bytes = min(bytes, pvsbufferlength);
-       if (r_novis.integer || !loadmodel->brushq3.num_pvsclusters)
+       if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q3BSP_GetPVS(model, org))
        {
                memset(pvsbuffer, 0xFF, bytes);
                return bytes;
@@ -5154,14 +5527,20 @@ static int Mod_Q3BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, qbyt
 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 {
        int supercontents = 0;
-       if (nativecontents & Q2CONTENTS_SOLID)
+       if (nativecontents & CONTENTSQ3_SOLID)
                supercontents |= SUPERCONTENTS_SOLID;
-       if (nativecontents & Q2CONTENTS_WATER)
+       if (nativecontents & CONTENTSQ3_WATER)
                supercontents |= SUPERCONTENTS_WATER;
-       if (nativecontents & Q2CONTENTS_SLIME)
+       if (nativecontents & CONTENTSQ3_SLIME)
                supercontents |= SUPERCONTENTS_SLIME;
-       if (nativecontents & Q2CONTENTS_LAVA)
+       if (nativecontents & CONTENTSQ3_LAVA)
                supercontents |= SUPERCONTENTS_LAVA;
+       if (nativecontents & CONTENTSQ3_BODY)
+               supercontents |= SUPERCONTENTS_BODY;
+       if (nativecontents & CONTENTSQ3_CORPSE)
+               supercontents |= SUPERCONTENTS_CORPSE;
+       if (nativecontents & CONTENTSQ3_NODROP)
+               supercontents |= SUPERCONTENTS_NODROP;
        return supercontents;
 }
 
@@ -5169,28 +5548,136 @@ static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int superco
 {
        int nativecontents = 0;
        if (supercontents & SUPERCONTENTS_SOLID)
-               nativecontents |= Q2CONTENTS_SOLID;
+               nativecontents |= CONTENTSQ3_SOLID;
        if (supercontents & SUPERCONTENTS_WATER)
-               nativecontents |= Q2CONTENTS_WATER;
+               nativecontents |= CONTENTSQ3_WATER;
        if (supercontents & SUPERCONTENTS_SLIME)
-               nativecontents |= Q2CONTENTS_SLIME;
+               nativecontents |= CONTENTSQ3_SLIME;
        if (supercontents & SUPERCONTENTS_LAVA)
-               nativecontents |= Q2CONTENTS_LAVA;
+               nativecontents |= CONTENTSQ3_LAVA;
+       if (supercontents & SUPERCONTENTS_BODY)
+               nativecontents |= CONTENTSQ3_BODY;
+       if (supercontents & SUPERCONTENTS_CORPSE)
+               nativecontents |= CONTENTSQ3_CORPSE;
+       if (supercontents & SUPERCONTENTS_NODROP)
+               nativecontents |= CONTENTSQ3_NODROP;
        return nativecontents;
 }
 
+/*
+void Mod_Q3BSP_RecursiveGetVisible(q3mnode_t *node, model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, q3mleaf_t *leaflist, int *numleafs, int maxsurfaces, q3msurface_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_Q3BSP_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 marksurfacenum;
+               q3msurface_t *surf;
+               if (maxleafs && *numleafs < maxleafs)
+                       leaflist[(*numleaf)++] = leaf;
+               if (maxsurfaces)
+               {
+                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
+                       {
+                               face = leaf->firstleafface[marksurfacenum];
+                               if (face->shadowmark != shadowmarkcount)
+                               {
+                                       face->shadowmark = shadowmarkcount;
+                                       if (BoxesOverlap(mins, maxs, face->mins, face->maxs) && *numsurfaces < maxsurfaces)
+                                               surfacelist[(*numsurfaces)++] = face;
+                               }
+                       }
+               }
+       }
+}
+
+void Mod_Q3BSP_GetVisible(model_t *model, const vec3_t point, const vec3_t mins, const vec3_t maxs, int maxleafs, q3mleaf_t *leaflist, int *numleafs, int maxsurfaces, q3msurface_t *surfacelist, int *numsurfaces)
+{
+       // FIXME: support portals
+       if (maxsurfaces)
+               *numsurfaces = 0;
+       if (maxleafs)
+               *numleafs = 0;
+       if (model->submodel)
+       {
+               if (maxsurfaces)
+               {
+                       for (marksurfacenum = 0;marksurfacenum < leaf->nummarksurfaces;marksurfacenum++)
+                       {
+                               face = ent->model->brushq3.surfaces + leaf->firstmarksurface[marksurfacenum];
+                               if (BoxesOverlap(mins, maxs, face->mins, face->maxs) && *numsurfaces < maxsurfaces)
+                                       surfacelist[(*numsurfaces)++] = face;
+                       }
+               }
+       }
+       else
+       {
+               pvs = ent->model->brush.GetPVS(ent->model, relativelightorigin);
+               Mod_Q3BSP_RecursiveGetVisible(ent->model->brushq3.data_nodes, model, point, mins, maxs, maxleafs, leaflist, numleafs, maxsurfaces, surfacelist, numsurfaces, pvs);
+       }
+}
+*/
+
+void Mod_Q3BSP_BuildTextureFaceLists(void)
+{
+       int i, j;
+       loadmodel->brushq3.data_texturefaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummodelsurfaces * sizeof(q3msurface_t *));
+       loadmodel->brushq3.data_texturefacenums = Mem_Alloc(loadmodel->mempool, loadmodel->nummodelsurfaces * sizeof(int));
+       for (i = 0;i < loadmodel->brushq3.num_textures;i++)
+               loadmodel->brushq3.data_textures[i].numfaces = 0;
+       for (i = 0;i < loadmodel->nummodelsurfaces;i++)
+               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces++;
+       j = 0;
+       for (i = 0;i < loadmodel->brushq3.num_textures;i++)
+       {
+               loadmodel->brushq3.data_textures[i].facelist = loadmodel->brushq3.data_texturefaces + j;
+               loadmodel->brushq3.data_textures[i].facenumlist = loadmodel->brushq3.data_texturefacenums + j;
+               j += loadmodel->brushq3.data_textures[i].numfaces;
+               loadmodel->brushq3.data_textures[i].numfaces = 0;
+       }
+       for (i = 0;i < loadmodel->nummodelsurfaces;i++)
+       {
+               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->facenumlist[loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces] = loadmodel->surfacelist[i];
+               loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->facelist[loadmodel->brushq3.data_faces[loadmodel->surfacelist[i]].texture->numfaces++] = loadmodel->brushq3.data_faces + loadmodel->surfacelist[i];
+       }
+}
+
+void Mod_Q3BSP_RecursiveFindNumLeafs(q3mnode_t *node)
+{
+       int numleafs;
+       while (node->plane)
+       {
+               Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
+               node = node->children[1];
+       }
+       numleafs = ((q3mleaf_t *)node - loadmodel->brushq3.data_leafs) + 1;
+       if (loadmodel->brushq3.num_leafs < numleafs)
+               loadmodel->brushq3.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_DrawShadowVolume(struct entity_render_s *ent, vec3_t relativelightorigin, float lightradius);
-extern void R_Q3BSP_DrawLight(struct entity_render_s *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
+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)
 {
-       int i, j;
+       int i, j, numshadowmeshtriangles;
        q3dheader_t *header;
        float corner[3], yawradius, modelradius;
+       q3msurface_t *face;
 
        mod->type = mod_brushq3;
-       mod->numframes = 1;
+       mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
        mod->numskins = 1;
 
        header = (q3dheader_t *)buffer;
@@ -5198,12 +5685,8 @@ 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 (loadmodel->isworldmodel)
-       {
+       if (mod->isworldmodel)
                Cvar_SetValue("halflifebsp", false);
-               // until we get a texture for it...
-               R_ResetQuakeSky();
-       }
 
        mod->soundfromcenter = true;
        mod->TraceBox = Mod_Q3BSP_TraceBox;
@@ -5216,14 +5699,20 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        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_base = (qbyte *)header;
 
        // swap all the lumps
-       for (i = 0;i < (int) sizeof(*header) / 4;i++)
-               ((int *)header)[i] = LittleLong(((int *)header)[i]);
+       header->ident = LittleLong(header->ident);
+       header->version = LittleLong(header->version);
+       for (i = 0;i < Q3HEADER_LUMPS;i++)
+       {
+               header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
+               header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
+       }
 
        Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
        Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
@@ -5244,15 +5733,31 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
        Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
        loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
 
+       // 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++)
+       {
+               face->num_firstshadowmeshtriangle = numshadowmeshtriangles;
+               numshadowmeshtriangles += face->mesh.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);
+       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->brushq3.num_leafs = 0;
+       Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brushq3.data_nodes);
+
+       mod = loadmodel;
        for (i = 0;i < loadmodel->brushq3.num_models;i++)
        {
-               if (i == 0)
-                       mod = loadmodel;
-               else
+               if (i > 0)
                {
                        char name[10];
                        // LordHavoc: only register submodels if it is the world
-                       // (prevents bsp models from replacing world submodels)
+                       // (prevents external bsp models from replacing world submodels with
+                       //  their own)
                        if (!loadmodel->isworldmodel)
                                continue;
                        // duplicate the basic information
@@ -5263,10 +5768,21 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                        // textures and memory belong to the main model
                        mod->texturepool = NULL;
                        mod->mempool = NULL;
+                       mod->brush.GetPVS = NULL;
+                       mod->brush.FatPVS = NULL;
+                       mod->brush.BoxTouchingPVS = NULL;
+                       mod->brush.LightPoint = NULL;
+                       mod->brush.FindNonSolidLocation = Mod_Q3BSP_FindNonSolidLocation;
                }
                mod->brushq3.data_thismodel = loadmodel->brushq3.data_models + i;
                mod->brushq3.submodel = i;
 
+               // make the model surface list (used by shadowing/lighting)
+               mod->nummodelsurfaces = mod->brushq3.data_thismodel->numfaces;
+               mod->surfacelist = Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
+               for (j = 0;j < mod->nummodelsurfaces;j++)
+                       mod->surfacelist[j] = (mod->brushq3.data_thismodel->firstface - mod->brushq3.data_faces) + j;
+
                VectorCopy(mod->brushq3.data_thismodel->mins, mod->normalmins);
                VectorCopy(mod->brushq3.data_thismodel->maxs, mod->normalmaxs);
                corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
@@ -5289,6 +5805,8 @@ void Mod_Q3BSP_Load(model_t *mod, void *buffer)
                if (j < mod->brushq3.data_thismodel->numfaces)
                        mod->DrawSky = R_Q3BSP_DrawSky;
        }
+
+       Mod_Q3BSP_BuildTextureFaceLists();
 }
 
 void Mod_IBSP_Load(model_t *mod, void *buffer)