]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
bmodel shadow volumes
[xonotic/darkplaces.git] / model_brush.c
index edcb60930aff8f03c1e89c331adf28e83ddcf751..51fc0c79bd1baf936248f9d9cd6068fd193fb303 100644 (file)
@@ -29,7 +29,6 @@ cvar_t halflifebsp = {0, "halflifebsp", "0"};
 cvar_t r_novis = {0, "r_novis", "0"};
 cvar_t r_miplightmaps = {CVAR_SAVE, "r_miplightmaps", "0"};
 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1"};
-cvar_t r_vertexsurfacesthreshold = {CVAR_SAVE, "r_vertexsurfacesthreshold", "0"};
 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0"};
 cvar_t r_sortsurfaces = {0, "r_sortsurfaces", "0"};
 
@@ -49,7 +48,6 @@ void Mod_BrushInit (void)
        Cvar_RegisterVariable(&r_novis);
        Cvar_RegisterVariable(&r_miplightmaps);
        Cvar_RegisterVariable(&r_lightmaprgba);
-       Cvar_RegisterVariable(&r_vertexsurfacesthreshold);
        Cvar_RegisterVariable(&r_nosurftextures);
        Cvar_RegisterVariable(&r_sortsurfaces);
        memset(mod_novis, 0xff, sizeof(mod_novis));
@@ -227,17 +225,20 @@ static void Mod_LoadTextures (lump_t *l)
 
        // add two slots for notexture walls and notexture liquids
        loadmodel->numtextures = m->nummiptex + 2;
-       loadmodel->textures = Mem_Alloc(loadmodel->mempool, loadmodel->numtextures * sizeof(*loadmodel->textures));
+       loadmodel->textures = Mem_Alloc(loadmodel->mempool, loadmodel->numtextures * sizeof(texture_t));
 
        // fill out all slots with notexture
-       for (i = 0;i < loadmodel->numtextures;i++)
+       for (i = 0, tx = loadmodel->textures;i < loadmodel->numtextures;i++, tx++)
        {
-               loadmodel->textures[i] = tx = Mem_Alloc(loadmodel->mempool, sizeof(texture_t));
                tx->width = 16;
                tx->height = 16;
                tx->texture = r_notexture;
+               tx->shader = &Cshader_wall_lightmap;
                if (i == loadmodel->numtextures - 1)
-                       tx->flags = SURF_DRAWTURB | SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA | SURF_CLIPSOLID;
+               {
+                       tx->flags = SURF_DRAWTURB | SURF_LIGHTBOTHSIDES;
+                       tx->shader = &Cshader_water;
+               }
        }
 
        // just to work around bounds checking when debugging with it (array index out of bounds error thing)
@@ -278,13 +279,10 @@ static void Mod_LoadTextures (lump_t *l)
                        if (name[j] >= 'A' && name[j] <= 'Z')
                                name[j] += 'a' - 'A';
 
-               tx = loadmodel->textures[i];
+               tx = loadmodel->textures + i;
                strcpy(tx->name, name);
                tx->width = mtwidth;
                tx->height = mtheight;
-               tx->texture = NULL;
-               tx->glowtexture = NULL;
-               tx->fogtexture = NULL;
 
                if (!tx->name[0])
                {
@@ -412,20 +410,23 @@ static void Mod_LoadTextures (lump_t *l)
 
                if (tx->name[0] == '*')
                {
-                       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)
                         || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
-                               tx->flags |= (SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA | SURF_CLIPSOLID);
+                               tx->flags |= SURF_DRAWFULLBRIGHT | SURF_DRAWNOALPHA;
+                       tx->shader = &Cshader_water;
                }
                else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
-                       tx->flags |= (SURF_DRAWSKY | SURF_CLIPSOLID);
+               {
+                       tx->flags |= SURF_DRAWSKY;
+                       tx->shader = &Cshader_sky;
+               }
                else
                {
                        tx->flags |= SURF_LIGHTMAP;
-                       if (!R_TextureHasAlpha(tx->texture))
-                               tx->flags |= SURF_CLIPSOLID;
+                       tx->shader = &Cshader_wall_lightmap;
                }
 
                tx->detailtexture = detailtextures[i % NUM_DETAILTEXTURES];
@@ -434,7 +435,7 @@ static void Mod_LoadTextures (lump_t *l)
        // sequence the animations
        for (i = 0;i < m->nummiptex;i++)
        {
-               tx = loadmodel->textures[i];
+               tx = loadmodel->textures + i;
                if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
                        continue;
                if (tx->anim_total[0] || tx->anim_total[1])
@@ -446,7 +447,7 @@ static void Mod_LoadTextures (lump_t *l)
 
                for (j = i;j < m->nummiptex;j++)
                {
-                       tx2 = loadmodel->textures[j];
+                       tx2 = loadmodel->textures + j;
                        if (!tx2 || tx2->name[0] != '+' || strcmp (tx2->name+2, tx->name+2))
                                continue;
 
@@ -646,7 +647,7 @@ void Mod_LoadLightList(void)
                        if (a != 14)
                        {
                                Mem_Free(lightsstring);
-                               Host_Error("invalid lights file, found %d parameters on line %i, should be 13 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone style)\n", a, n + 1);
+                               Host_Error("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
                        }
                        s++;
                        n++;
@@ -661,6 +662,56 @@ void Mod_LoadLightList(void)
        }
 }
 
+void Mod_ProcessLightList(void)
+{
+       int i, j, k, *mark;
+       mlight_t *e;
+       msurface_t *surf;
+       float dist;
+       mleaf_t *l;
+       qbyte *pvs;
+       for (i = 0, e = loadmodel->lights;i < loadmodel->numlights;i++, e++)
+       {
+               e->cullradius2 = DotProduct(e->light, e->light) * (1.0f / (8192.0f * 8192.0f)) / (e->falloff * e->falloff) + 4096.0f;
+               if (e->cullradius2 > 4096.0f * 4096.0f)
+                       e->cullradius2 = 4096.0f * 4096.0f;
+               e->cullradius = sqrt(e->cullradius2);
+               l = Mod_PointInLeaf(e->origin, loadmodel);
+               if (l->compressed_vis)
+                       pvs = Mod_DecompressVis (l->compressed_vis, loadmodel);
+               else
+                       pvs = mod_novis;
+               for (j = 0, l = loadmodel->leafs + 1;j < loadmodel->numleafs - 1;j++)
+               {
+                       if (pvs[j >> 3] & (1 << (j & 7)))
+                       {
+                               for (k = 0, mark = l->firstmarksurface;k < l->nummarksurfaces;k++, mark++)
+                               {
+                                       surf = loadmodel->surfaces + *mark;
+                                       dist = DotProduct(e->origin, surf->plane->normal) - surf->plane->dist;
+                                       if (surf->flags & SURF_PLANEBACK)
+                                               dist = -dist;
+                                       if (dist > 0 && dist < e->cullradius)
+                                               loadmodel->surfacevisframes[j] = i - 1000000;
+                               }
+                       }
+               }
+               e->numsurfaces = 0;
+               for (j = 0;j < loadmodel->nummodelsurfaces;j++)
+                       if (loadmodel->surfacevisframes[j] == i - 1000000)
+                               e->numsurfaces++;
+               e->surfaces = NULL;
+               if (e->numsurfaces > 0)
+               {
+                       e->surfaces = Mem_Alloc(loadmodel->mempool, sizeof(msurface_t *) * e->numsurfaces);
+                       e->numsurfaces = 0;
+                       for (j = 0;j < loadmodel->nummodelsurfaces;j++)
+                               if (loadmodel->surfacevisframes[j] == i - 1000000)
+                                       e->surfaces[e->numsurfaces++] = loadmodel->surfaces + loadmodel->firstmodelsurface + j;
+               }
+       }
+}
+
 
 /*
 =================
@@ -677,22 +728,20 @@ static void Mod_LoadVisibility (lump_t *l)
 }
 
 // used only for HalfLife maps
-void Mod_ParseWadsFromEntityLump(char *data)
+void Mod_ParseWadsFromEntityLump(const char *data)
 {
        char key[128], value[4096];
        char wadname[128];
        int i, j, k;
        if (!data)
                return;
-       data = COM_Parse(data);
-       if (!data)
+       if (!COM_ParseToken(&data))
                return; // error
        if (com_token[0] != '{')
                return; // error
        while (1)
        {
-               data = COM_Parse(data);
-               if (!data)
+               if (!COM_ParseToken(&data))
                        return; // error
                if (com_token[0] == '}')
                        break; // end of worldspawn
@@ -702,8 +751,7 @@ void Mod_ParseWadsFromEntityLump(char *data)
                        strcpy(key, com_token);
                while (key[strlen(key)-1] == ' ') // remove trailing spaces
                        key[strlen(key)-1] = 0;
-               data = COM_Parse(data);
-               if (!data)
+               if (!COM_ParseToken(&data))
                        return; // error
                strcpy(value, com_token);
                if (!strcmp("wad", key)) // for HalfLife maps
@@ -883,15 +931,20 @@ static void Mod_LoadTexinfo (lump_t *l)
                        if ((unsigned int) miptex >= (unsigned int) loadmodel->numtextures)
                                Con_Printf ("error in model \"%s\": invalid miptex index %i (of %i)\n", loadmodel->name, miptex, loadmodel->numtextures);
                        else
-                               out->texture = loadmodel->textures[miptex];
+                               out->texture = loadmodel->textures + miptex;
                }
-               if (out->texture == NULL)
+               if (out->flags & TEX_SPECIAL)
                {
-                       // choose either the liquid notexture, or the normal notexture
-                       if (out->flags & TEX_SPECIAL)
-                               out->texture = loadmodel->textures[loadmodel->numtextures - 1];
-                       else
-                               out->texture = loadmodel->textures[loadmodel->numtextures - 2];
+                       // if texture chosen is NULL or the shader needs a lightmap,
+                       // force to notexture water shader
+                       if (out->texture == NULL || out->texture->shader->flags & SHADERFLAGS_NEEDLIGHTMAP)
+                               out->texture = loadmodel->textures + (loadmodel->numtextures - 1);
+               }
+               else
+               {
+                       // if texture chosen is NULL, force to notexture
+                       if (out->texture == NULL)
+                               out->texture = loadmodel->textures + (loadmodel->numtextures - 2);
                }
        }
 }
@@ -1108,8 +1161,8 @@ void Mod_GenerateWarpMesh (msurface_t *surf)
 
 void Mod_GenerateWallMesh (msurface_t *surf, int vertexonly)
 {
-       int i, iu, iv, *index, smax, tmax;
-       float *in, s, t, u, v, ubase, vbase, uscale, vscale;
+       int i, iu, iv, *index, *n, smax, tmax;
+       float *in, s, t, u, v, ubase, vbase, uscale, vscale, normal[3];
        surfmesh_t *mesh;
 
        smax = surf->extents[0] >> 4;
@@ -1142,7 +1195,7 @@ void Mod_GenerateWallMesh (msurface_t *surf, int vertexonly)
                vscale = (vscale - vbase) * 16.0 / ((surf->extents[1] & ~15) + 16);
        }
 
-       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + (surf->poly_numverts - 2) * sizeof(int[3]) + surf->poly_numverts * (4 + 2 + 2 + 2 + 1) * sizeof(float));
+       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + (surf->poly_numverts - 2) * sizeof(int[6]) + surf->poly_numverts * (4 + 2 + 2 + 2 + 1 + 3) * sizeof(float));
        mesh->numverts = surf->poly_numverts;
        mesh->numtriangles = surf->poly_numverts - 2;
        mesh->verts = (float *)(mesh + 1);
@@ -1151,26 +1204,37 @@ void Mod_GenerateWallMesh (msurface_t *surf, int vertexonly)
        mesh->ab = mesh->uv + mesh->numverts * 2;
        mesh->lightmapoffsets = (int *)(mesh->ab + mesh->numverts * 2);
        mesh->index = mesh->lightmapoffsets + mesh->numverts;
+       mesh->triangleneighbors = mesh->index + mesh->numtriangles * 3;
+       mesh->normals = (float *)(mesh->triangleneighbors + mesh->numtriangles * 3);
 
        index = mesh->index;
+       n = mesh->triangleneighbors;
        for (i = 0;i < mesh->numtriangles;i++)
        {
                *index++ = 0;
                *index++ = i + 1;
                *index++ = i + 2;
+               *n++ = i - 1;
+               *n++ = -1;
+               *n++ = i + 1;
        }
 
+       VectorCopy(surf->plane->normal, normal);
+       if (surf->flags & SURF_PLANEBACK)
+               VectorNegate(normal, normal);
        for (i = 0, in = surf->poly_verts;i < mesh->numverts;i++, in += 3)
        {
                s = DotProduct (in, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3];
                t = DotProduct (in, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3];
-               u = (s + 8 - surf->texturemins[0]) * (1.0 / 16.0) * uscale + ubase;
-               v = (t + 8 - surf->texturemins[1]) * (1.0 / 16.0) * vscale + vbase;
+               u = (s + 8 - surf->texturemins[0]) * (1.0 / 16.0);
+               v = (t + 8 - surf->texturemins[1]) * (1.0 / 16.0);
                // LordHavoc: calc lightmap data offset for vertex lighting to use
                iu = (int) u;
                iv = (int) v;
                iu = bound(0, iu, smax);
                iv = bound(0, iv, tmax);
+               u = u * uscale + ubase;
+               v = v * vscale + vbase;
 
                mesh->verts[i * 4 + 0] = in[0];
                mesh->verts[i * 4 + 1] = in[1];
@@ -1182,34 +1246,46 @@ void Mod_GenerateWallMesh (msurface_t *surf, int vertexonly)
                mesh->ab[i * 2 + 0] = s * (1.0f / 16.0f);
                mesh->ab[i * 2 + 1] = t * (1.0f / 16.0f);
                mesh->lightmapoffsets[i] = ((iv * (smax+1) + iu) * 3);
+               mesh->normals[i * 3 + 0] = normal[0];
+               mesh->normals[i * 3 + 1] = normal[1];
+               mesh->normals[i * 3 + 2] = normal[2];
        }
 }
 
 void Mod_GenerateVertexMesh (msurface_t *surf)
 {
-       int i, *index;
-       float *in, s, t;
+       int i, *index, *n;
+       float *in, s, t, normal[3];
        surfmesh_t *mesh;
 
        surf->lightmaptexturestride = 0;
        surf->lightmaptexture = NULL;
 
-       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + (surf->poly_numverts - 2) * sizeof(int[3]) + surf->poly_numverts * (4 + 2 + 2) * sizeof(float));
+       surf->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + (surf->poly_numverts - 2) * sizeof(int[6]) + surf->poly_numverts * (4 + 2 + 2 + 3) * sizeof(float));
        mesh->numverts = surf->poly_numverts;
        mesh->numtriangles = surf->poly_numverts - 2;
        mesh->verts = (float *)(mesh + 1);
        mesh->st = mesh->verts + mesh->numverts * 4;
        mesh->ab = mesh->st + mesh->numverts * 2;
        mesh->index = (int *)(mesh->ab + mesh->numverts * 2);
+       mesh->triangleneighbors = mesh->index + mesh->numtriangles * 3;
+       mesh->normals = (float *)(mesh->triangleneighbors + mesh->numtriangles * 3);
 
        index = mesh->index;
+       n = mesh->triangleneighbors;
        for (i = 0;i < mesh->numtriangles;i++)
        {
                *index++ = 0;
                *index++ = i + 1;
                *index++ = i + 2;
+               *n++ = -1;
+               *n++ = -1;
+               *n++ = i + 1;
        }
 
+       VectorCopy(surf->plane->normal, normal);
+       if (surf->flags & SURF_PLANEBACK)
+               VectorNegate(normal, normal);
        for (i = 0, in = surf->poly_verts;i < mesh->numverts;i++, in += 3)
        {
                s = (DotProduct (in, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3]);
@@ -1221,13 +1297,16 @@ void Mod_GenerateVertexMesh (msurface_t *surf)
                mesh->st[i * 2 + 1] = t / surf->texinfo->texture->height;
                mesh->ab[i * 2 + 0] = s * (1.0f / 16.0f);
                mesh->ab[i * 2 + 1] = t * (1.0f / 16.0f);
+               mesh->normals[i * 3 + 0] = normal[0];
+               mesh->normals[i * 3 + 1] = normal[1];
+               mesh->normals[i * 3 + 2] = normal[2];
        }
 }
 
 void Mod_GenerateSurfacePolygon (msurface_t *surf)
 {
        int i, lindex;
-       float *vec, *vert, mins[3], maxs[3];
+       float *vec, *vert, mins[3], maxs[3], temp[3], dist;
 
        // convert edges back to a normal polygon
        surf->poly_numverts = surf->numedges;
@@ -1258,6 +1337,17 @@ void Mod_GenerateSurfacePolygon (msurface_t *surf)
        surf->poly_center[0] = (mins[0] + maxs[0]) * 0.5f;
        surf->poly_center[1] = (mins[1] + maxs[1]) * 0.5f;
        surf->poly_center[2] = (mins[2] + maxs[2]) * 0.5f;
+       surf->poly_radius2 = 0;
+       vert = surf->poly_verts;
+       for (i = 0;i < surf->poly_numverts;i++)
+       {
+               VectorSubtract(vert, surf->poly_center, temp);
+               dist = DotProduct(temp, temp);
+               if (surf->poly_radius2 < dist)
+                       surf->poly_radius2 = dist;
+               vert += 3;
+       }
+       surf->poly_radius = sqrt(surf->poly_radius2);
 }
 
 /*
@@ -1279,9 +1369,12 @@ static void Mod_LoadFaces (lump_t *l)
 
        loadmodel->surfaces = out;
        loadmodel->numsurfaces = count;
+       loadmodel->surfacevisframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
+       loadmodel->surfacepvsframes = Mem_Alloc(loadmodel->mempool, count * sizeof(int));
 
        for (surfnum = 0;surfnum < count;surfnum++, in++, out++)
        {
+               out->number = surfnum;
                // FIXME: validate edges, texinfo, etc?
                out->firstedge = LittleLong(in->firstedge);
                out->numedges = LittleShort(in->numedges);
@@ -1308,8 +1401,6 @@ static void Mod_LoadFaces (lump_t *l)
 
                // force lightmap upload on first time seeing the surface
                out->cached_dlight = true;
-               out->cached_ambient = -1000;
-               out->cached_lightscalebit = -1000;
 
                CalcSurfaceExtents (out);
 
@@ -1328,56 +1419,18 @@ static void Mod_LoadFaces (lump_t *l)
                        out->samples = loadmodel->lightdata + (i * 3);
 
                Mod_GenerateSurfacePolygon(out);
-
-               if (out->texinfo->texture->flags & SURF_DRAWSKY)
+               if (out->texinfo->texture->shader == &Cshader_wall_lightmap)
                {
-                       out->shader = &Cshader_sky;
-                       out->samples = NULL;
-                       Mod_GenerateVertexMesh (out);
-               }
-               else if (out->texinfo->texture->flags & SURF_DRAWTURB)
-               {
-                       out->shader = &Cshader_water;
-                       out->samples = NULL;
-                       Mod_GenerateVertexMesh (out);
+                       if ((out->extents[0] >> 4) + 1 > (256) || (out->extents[1] >> 4) + 1 > (256))
+                               Host_Error ("Bad surface extents");
+                       Mod_GenerateWallMesh (out, false);
+                       // stainmap for permanent marks on walls
+                       out->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
+                       // clear to white
+                       memset(out->stainsamples, 255, ssize * tsize * 3);
                }
                else
-               {
-                       if (!R_TextureHasAlpha(out->texinfo->texture->texture))
-                               out->flags |= SURF_CLIPSOLID;
-                       if (out->texinfo->flags & TEX_SPECIAL)
-                       {
-                               // qbsp couldn't find the texture for this surface, but it was either turb or sky...  assume turb
-                               out->shader = &Cshader_water;
-                               out->shader = &Cshader_water;
-                               out->samples = NULL;
-                               Mod_GenerateVertexMesh (out);
-                       }
-                       else if ((out->extents[0] >> 4) + 1 > (256) || (out->extents[1] >> 4) + 1 > (256))
-                       {
-                               Con_Printf ("Bad surface extents, converting to fullbright polygon");
-                               out->shader = &Cshader_wall_fullbright;
-                               out->samples = NULL;
-                               Mod_GenerateVertexMesh(out);
-                       }
-                       else
-                       {
-                               // stainmap for permanent marks on walls
-                               out->stainsamples = Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
-                               // clear to white
-                               memset(out->stainsamples, 255, ssize * tsize * 3);
-                               if (out->extents[0] < r_vertexsurfacesthreshold.integer && out->extents[1] < r_vertexsurfacesthreshold.integer)
-                               {
-                                       out->shader = &Cshader_wall_vertex;
-                                       Mod_GenerateWallMesh (out, true);
-                               }
-                               else
-                               {
-                                       out->shader = &Cshader_wall_lightmap;
-                                       Mod_GenerateWallMesh (out, false);
-                               }
-                       }
-               }
+                       Mod_GenerateVertexMesh (out);
        }
 }
 
@@ -1629,21 +1682,21 @@ Mod_LoadMarksurfaces
 */
 static void Mod_LoadMarksurfaces (lump_t *l)
 {
-       int             i, j;
-       short   *in;
+       int i, j;
+       short *in;
 
        in = (void *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
                Host_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
        loadmodel->nummarksurfaces = l->filelen / sizeof(*in);
-       loadmodel->marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummarksurfaces * sizeof(msurface_t *));
+       loadmodel->marksurfaces = Mem_Alloc(loadmodel->mempool, loadmodel->nummarksurfaces * sizeof(int));
 
        for (i = 0;i < loadmodel->nummarksurfaces;i++)
        {
                j = (unsigned) LittleShort(in[i]);
                if (j >= loadmodel->numsurfaces)
                        Host_Error ("Mod_ParseMarksurfaces: bad surface number");
-               loadmodel->marksurfaces[i] = loadmodel->surfaces + j;
+               loadmodel->marksurfaces[i] = j;
        }
 }
 
@@ -2371,6 +2424,7 @@ static void Mod_MakePortals(void)
 Mod_LoadBrushModel
 =================
 */
+extern void R_DrawBrushModelFakeShadow (entity_render_t *ent);
 void Mod_LoadBrushModel (model_t *mod, void *buffer)
 {
        int                     i, j;
@@ -2378,6 +2432,7 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
        dmodel_t        *bm;
        mempool_t       *mainmempool;
        char            *loadname;
+       model_t         *originalloadmodel;
 
        mod->type = mod_brush;
 
@@ -2430,6 +2485,7 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
        loadname = mod->name;
 
        Mod_LoadLightList ();
+       originalloadmodel = loadmodel;
 
 //
 // set up the submodels (FIXME: this is confusing)
@@ -2462,7 +2518,7 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
                for (j = 0, surf = &mod->surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surf++)
                {
                        // we only need to have a drawsky function if it is used (usually only on world model)
-                       if (surf->shader == &Cshader_sky)
+                       if (surf->texinfo->texture->shader == &Cshader_sky)
                                mod->DrawSky = R_DrawBrushModelSky;
                        for (k = 0;k < surf->numedges;k++)
                        {
@@ -2492,6 +2548,8 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
                mod->yawmaxs[2] = mod->normalmaxs[2];
                mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
                mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
+               mod->radius = modelradius;
+               mod->radius2 = modelradius * modelradius;
                // LordHavoc: check for empty submodels (lacrima.bsp has such a glitch)
                if (mod->normalmins[0] > mod->normalmaxs[0] || mod->normalmins[1] > mod->normalmaxs[1] || mod->normalmins[2] > mod->normalmaxs[2])
                {
@@ -2502,12 +2560,14 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
                        VectorClear(mod->yawmaxs);
                        VectorClear(mod->rotatedmins);
                        VectorClear(mod->rotatedmaxs);
+                       mod->radius = 0;
+                       mod->radius2 = 0;
                }
 
                mod->numleafs = bm->visleafs;
 
                mod->Draw = R_DrawBrushModelNormal;
-               mod->DrawShadow = NULL;
+               mod->DrawFakeShadow = R_DrawBrushModelFakeShadow;
 
                // LordHavoc: only register submodels if it is the world
                // (prevents bsp models from replacing world submodels)
@@ -2525,5 +2585,8 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
                        mod = loadmodel;
                }
        }
+
+       loadmodel = originalloadmodel;
+       Mod_ProcessLightList ();
 }