]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
Fix infinite loop that occurred in R_FrameData_Alloc if requesting > 256MB (which...
[xonotic/darkplaces.git] / model_brush.c
index 2761d7d670d38b7d2f6e7e559789b5e80f9ea65b..ad41ad38e3bd9246694ae95798ff693c1cff1999 100644 (file)
@@ -42,6 +42,7 @@ cvar_t r_trippy = {0, "r_trippy", "0", "easter egg"};
 cvar_t r_fxaa = {CVAR_SAVE, "r_fxaa", "0", "fast approximate anti aliasing"};
 cvar_t mod_noshader_default_offsetmapping = {CVAR_SAVE, "mod_noshader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are not using q3 shader files"};
 cvar_t mod_obj_orientation = {0, "mod_obj_orientation", "1", "fix orientation of OBJ models to the usual conventions (if zero, use coordinates as is)"};
+cvar_t mod_q2bsp_littransparentsurfaces = {0, "mod_q2bsp_littransparentsurfaces", "0", "allows lighting on rain in 3v3gloom3 and other cases of transparent surfaces that have lightmaps that were ignored by quake2"};
 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
 cvar_t mod_q3bsp_curves_collisions_stride = {0, "mod_q3bsp_curves_collisions_stride", "16", "collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
 cvar_t mod_q3bsp_curves_stride = {0, "mod_q3bsp_curves_stride", "16", "particle effect collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
@@ -89,6 +90,7 @@ void Mod_BrushInit(void)
        Cvar_RegisterVariable(&r_fxaa);
        Cvar_RegisterVariable(&mod_noshader_default_offsetmapping);
        Cvar_RegisterVariable(&mod_obj_orientation);
+       Cvar_RegisterVariable(&mod_q2bsp_littransparentsurfaces);
        Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
        Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
        Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
@@ -885,7 +887,7 @@ static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, i
 }
 //#endif
 
-static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
+static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        RecursiveHullCheckTraceInfo_t rhc;
 
@@ -900,22 +902,22 @@ static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *fram
        Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 }
 
-static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask);
+static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask);
 
-static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
+static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        RecursiveHullCheckTraceInfo_t rhc;
 
        if (VectorCompare(start, end))
        {
-               Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
        // sometimes we want to traceline against polygons so we can report the texture that was hit rather than merely a contents, but using this method breaks one of negke's maps so it must be a cvar check...
        if (sv_gameplayfix_q1bsptracelinereportstexture.integer)
        {
-               Mod_Q1BSP_TraceLineAgainstSurfaces(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+               Mod_Q1BSP_TraceLineAgainstSurfaces(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
@@ -923,6 +925,7 @@ static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frame
        memset(trace, 0, sizeof(trace_t));
        rhc.trace = trace;
        rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+       rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
@@ -940,6 +943,7 @@ static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frame
                memset(&testtrace, 0, sizeof(trace_t));
                rhc.trace = &testtrace;
                rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+               rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
                rhc.trace->fraction = 1;
                rhc.trace->allsolid = true;
                VectorCopy(test, rhc.start);
@@ -959,7 +963,7 @@ static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frame
 #endif
 }
 
-static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
+static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        // this function currently only supports same size start and end
        double boxsize[3];
@@ -968,9 +972,9 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameb
        if (VectorCompare(boxmins, boxmaxs))
        {
                if (VectorCompare(start, end))
-                       Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+                       Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
                else
-                       Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+                       Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
@@ -978,6 +982,7 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameb
        memset(trace, 0, sizeof(trace_t));
        rhc.trace = trace;
        rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+       rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        VectorSubtract(boxmaxs, boxmins, boxsize);
@@ -1020,6 +1025,7 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameb
                memset(&testtrace, 0, sizeof(trace_t));
                rhc.trace = &testtrace;
                rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+               rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
                rhc.trace->fraction = 1;
                rhc.trace->allsolid = true;
                VectorCopy(test, rhc.start);
@@ -1053,7 +1059,7 @@ static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const
        return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 }
 
-void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
+void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
 {
 #if 1
        colbrushf_t cbox;
@@ -1088,6 +1094,7 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
        cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
        memset(trace, 0, sizeof(trace_t));
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        trace->fraction = 1;
        Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 #else
@@ -1145,6 +1152,7 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
        rhc.hull = &box_hull;
        rhc.trace = trace;
        rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+       rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        VectorCopy(start, rhc.start);
@@ -1157,14 +1165,16 @@ void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cm
 #endif
 }
 
-void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
+void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
 {
        memset(trace, 0, sizeof(trace_t));
        trace->fraction = 1;
+       trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        if (BoxesOverlap(start, start, cmins, cmaxs))
        {
                trace->startsupercontents |= boxsupercontents;
-               if (hitsupercontentsmask & boxsupercontents)
+               if ((hitsupercontentsmask & boxsupercontents) && !(skipsupercontentsmask & boxsupercontents))
                {
                        trace->startsolid = true;
                        trace->allsolid = true;
@@ -1175,7 +1185,7 @@ void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t
 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
 {
        trace_t trace;
-       Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
+       Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0);
        return trace.fraction == 1;
 }
 
@@ -1362,6 +1372,9 @@ static const texture_t *Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(Recu
                // skip faces with contents we don't care about
                if (!(t->trace->hitsupercontentsmask & surface->texture->supercontents))
                        continue;
+               // ignore surfaces matching the skipsupercontentsmask (this is rare)
+               if (t->trace->skipsupercontentsmask & surface->texture->supercontents)
+                       continue;
                // get the surface normal - since it is flat we know any vertex normal will suffice
                VectorCopy(model->surfmesh.data_normal3f + 3 * surface->num_firstvertex, normal);
                // skip backfaces
@@ -1492,7 +1505,7 @@ static int Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(RecursiveHullCheck
        }
 }
 
-static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
+static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        RecursiveHullCheckTraceInfo_t rhc;
 
@@ -1500,6 +1513,7 @@ static void Mod_Q1BSP_TraceLineAgainstSurfaces(struct model_s *model, const fram
        memset(trace, 0, sizeof(trace_t));
        rhc.trace = trace;
        rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
+       rhc.trace->skipsupercontentsmask = skipsupercontentsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
@@ -1620,7 +1634,7 @@ static void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int
 static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
 {
        int i, j, k, num, max, altmax, mtwidth, mtheight, doffset, incomplete, nummiptex = 0;
-       skinframe_t *skinframe;
+       skinframe_t *skinframemissing;
        texture_t *tx, *tx2, *anims[10], *altanims[10];
        texture_t backuptex;
        unsigned char *data, *mtdata;
@@ -1651,9 +1665,9 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
 
        // fill out all slots with notexture
        if (cls.state != ca_dedicated)
-               skinframe = R_SkinFrame_LoadMissing();
+               skinframemissing = R_SkinFrame_LoadMissing();
        else
-               skinframe = NULL;
+               skinframemissing = NULL;
        for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
        {
                strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
@@ -1662,10 +1676,8 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                tx->basealpha = 1.0f;
                if (cls.state != ca_dedicated)
                {
-                       tx->numskinframes = 1;
-                       tx->skinframerate = 1;
-                       tx->skinframes[0] = skinframe;
-                       tx->currentskinframe = tx->skinframes[0];
+                       tx->materialshaderpass = tx->shaderpasses[0] = Mod_CreateShaderPass(skinframemissing);
+                       tx->currentskinframe = skinframemissing;
                }
                tx->basematerialflags = MATERIALFLAG_WALL;
                if (i == loadmodel->num_textures - 1)
@@ -1825,7 +1837,7 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                        }
                        else
                        {
-                               skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false);
+                               skinframe_t *skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false);
                                if (!skinframe)
                                        skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, false);
                                if (skinframe)
@@ -1854,15 +1866,15 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                                        else if (mtdata) // texture included
                                                skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height);
                                }
-                               // if skinframe is still NULL the "missing" texture will be used
+                               // if skinframe is still NULL the "missing" texture has already been assigned to this
                                if (skinframe)
-                                       tx->skinframes[0] = skinframe;
+                                       tx->materialshaderpass->skinframes[0] = skinframe;
                        }
                        // LordHavoc: some Tenebrae textures get replaced by black
                        if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
-                               tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zerotrans, 1, 1, false);
+                               tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zerotrans, 1, 1, false);
                        else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
-                               tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zeroopaque, 1, 1, false);
+                               tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zeroopaque, 1, 1, false);
                }
 
                tx->basematerialflags = MATERIALFLAG_WALL;
@@ -1877,7 +1889,7 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                                tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
                        else
                                tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
-                       if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
+                       if (tx->materialshaderpass->skinframes[0]->hasalpha)
                                tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
                }
                else if (tx->name[0] == '{') // fence textures
@@ -1893,12 +1905,12 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                        tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
                else if (!strcmp(tx->name, "caulk"))
                        tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
-               else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
+               else if (tx->materialshaderpass->skinframes[0]->hasalpha)
                        tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
 
                // start out with no animation
                tx->currentframe = tx;
-               tx->currentskinframe = tx->skinframes[0];
+               tx->currentskinframe = tx->materialshaderpass->skinframes[0];
                tx->currentmaterialflags = tx->basematerialflags;
        }
 
@@ -2685,10 +2697,10 @@ static void Mod_Q1BSP_LoadFaces(sizebuf_t *sb)
                int stainmapsize = 0;
                mod_alloclightmap_state_t allocState;
 
-               Mod_AllocLightmap_Init(&allocState, lightmapsize, lightmapsize);
+               Mod_AllocLightmap_Init(&allocState, loadmodel->mempool, lightmapsize, lightmapsize);
                for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
                {
-                       int i, iu, iv, lightmapx = 0, lightmapy = 0;
+                       int iu, iv, lightmapx = 0, lightmapy = 0;
                        float u, v, ubase, vbase, uscale, vscale;
 
                        if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
@@ -3787,7 +3799,7 @@ static int Mod_Q1BSP_CreateShadowMesh(dp_model_t *mod)
        return numshadowmeshtriangles;
 }
 
-void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask);
+void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask);
 
 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
 {
@@ -4303,7 +4315,7 @@ static void Mod_Q2BSP_LoadNodes(sizebuf_t *sb)
 static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
 {
        mtexinfo_t *out;
-       int i, j, k, l, count;
+       int i, l, count;
        int structsize = 76;
        int maxtextures = 1024; // hardcoded limit of quake2 engine, so we may as well use it as an upper bound
        char filename[MAX_QPATH];
@@ -4319,6 +4331,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
 
        for (i = 0;i < count;i++, out++)
        {
+               int j, k;
                for (k = 0;k < 2;k++)
                        for (j = 0;j < 4;j++)
                                out->vecs[k][j] = MSG_ReadLittleFloat(sb);
@@ -4332,7 +4345,9 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                // find an existing match for the texture if possible
                dpsnprintf(filename, sizeof(filename), "textures/%s.wal", out->q2texture);
                for (j = 0;j < loadmodel->num_texturesperskin;j++)
-                       if (!strcmp(filename, loadmodel->data_textures[j].name) && out->q2flags == loadmodel->data_textures[j].q2flags)
+                       if (!strcmp(filename, loadmodel->data_textures[j].name)
+                        && out->q2flags == loadmodel->data_textures[j].q2flags
+                        && out->q2value == loadmodel->data_textures[j].q2value)
                                break;
                // if we don't find the texture, store the new texture
                if (j == loadmodel->num_texturesperskin)
@@ -4343,19 +4358,24 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                int q2flags = out->q2flags;
                                unsigned char *walfile = NULL;
                                fs_offset_t walfilesize = 0;
-                               Mod_LoadTextureFromQ3Shader(tx, filename, true, true, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS);
+                               Mod_LoadTextureFromQ3Shader(tx, filename, true, true, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS);
                                // now read the .wal file to get metadata (even if a .tga was overriding it, we still need the wal data)
                                walfile = FS_LoadFile(filename, tempmempool, true, &walfilesize);
                                if (walfile)
                                {
                                        int w, h;
-                                       char q2animname32c[32];
-                                       LoadWAL_GetMetadata(walfile, (int)walfilesize, &w, &h, &q2flags, &tx->q2value, &tx->q2contents, q2animname32c);
+                                       LoadWAL_GetMetadata(walfile, (int)walfilesize, &w, &h, NULL, NULL, &tx->q2contents, NULL);
                                        tx->width = w;
                                        tx->height = h;
-                                       tx->q2flags = q2flags;
                                        Mem_Free(walfile);
                                }
+                               else
+                               {
+                                       tx->width = 16;
+                                       tx->height = 16;
+                               }
+                               tx->q2flags = out->q2flags;
+                               tx->q2value = out->q2value;
                                // also modify the texture to have the correct contents and such based on flags
                                // note that we create multiple texture_t structures if q2flags differs
                                if (q2flags & Q2SURF_LIGHT)
@@ -4388,7 +4408,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                if (q2flags & Q2SURF_TRANS33)
                                {
                                        tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED;
-                                       tx->basealpha = 0.3333f;
+                                       tx->basealpha = 1.0f / 3.0f;
                                        tx->supercontents &= ~SUPERCONTENTS_OPAQUE;
                                        if (tx->q2contents & Q2CONTENTS_SOLID)
                                                tx->q2contents = (tx->q2contents & ~Q2CONTENTS_SOLID) | Q2CONTENTS_WINDOW;
@@ -4396,16 +4416,29 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                if (q2flags & Q2SURF_TRANS66)
                                {
                                        tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED;
-                                       tx->basealpha = 0.6667f;
+                                       tx->basealpha = 2.0f / 3.0f;
                                        tx->supercontents &= ~SUPERCONTENTS_OPAQUE;
                                        if (tx->q2contents & Q2CONTENTS_SOLID)
                                                tx->q2contents = (tx->q2contents & ~Q2CONTENTS_SOLID) | Q2CONTENTS_WINDOW;
                                }
                                if (q2flags & Q2SURF_FLOWING)
                                {
-                                       tx->tcmods[0].tcmod = Q3TCMOD_SCROLL;
-                                       tx->tcmods[0].parms[0] = -1.6f;
-                                       tx->tcmods[0].parms[1] = 0.0f;
+                                       tx->materialshaderpass->tcmods[0].tcmod = Q3TCMOD_SCROLL;
+                                       if (q2flags & Q2SURF_WARP)
+                                               tx->materialshaderpass->tcmods[0].parms[0] = -0.5f;
+                                       else
+                                               tx->materialshaderpass->tcmods[0].parms[0] = -1.6f;
+                                       tx->materialshaderpass->tcmods[0].parms[1] = 0.0f;
+                               }
+                               if (q2flags & Q2SURF_ALPHATEST)
+                               {
+                                       // KMQUAKE2 and other modded engines added this flag for lit alpha tested surfaces
+                                       tx->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
+                               }
+                               else if (q2flags & (Q2SURF_TRANS33 | Q2SURF_TRANS66 | Q2SURF_WARP))
+                               {
+                                       if (!mod_q2bsp_littransparentsurfaces.integer)
+                                               tx->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
                                }
                                if (q2flags & Q2SURF_NODRAW)
                                {
@@ -4420,7 +4453,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                tx->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(loadmodel, tx->q2contents);
                                // set the current values to the base values
                                tx->currentframe = tx;
-                               tx->currentskinframe = tx->skinframes[0];
+                               tx->currentskinframe = tx->materialshaderpass->skinframes[0];
                                tx->currentmaterialflags = tx->basematerialflags;
                                loadmodel->num_texturesperskin++;
                                loadmodel->num_textures = loadmodel->num_texturesperskin;
@@ -4442,7 +4475,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
        // if we encounter the textures out of order, the later ones won't mark the earlier ones in a sequence, so the earlier 
        for (i = 0, out = loadmodel->brushq1.texinfo;i < count;i++, out++)
        {
-               int j;
+               int j, k;
                texture_t *t = loadmodel->data_textures + out->textureindex;
                t->currentframe = t; // fix the reallocated pointer
 
@@ -4618,6 +4651,9 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
        int i, j, firstside, numsides, contents, count, maxplanes, q3surfaceflags, supercontents;
        colplanef_t *planes;
        int structsize = 12;
+       qboolean brushmissingtextures;
+       int numbrushesmissingtextures = 0;
+       int numcreatedtextures = 0;
 
        if (sb->cursize % structsize)
                Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
@@ -4630,7 +4666,7 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
        maxplanes = 0;
        planes = NULL;
 
-       for (i = 0;i < count;i++, out++)
+       for (i = 0; i < count; i++, out++)
        {
                firstside = MSG_ReadLittleLong(sb);
                numsides = MSG_ReadLittleLong(sb);
@@ -4640,11 +4676,49 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
 
                out->firstbrushside = loadmodel->brush.data_brushsides + firstside;
                out->numbrushsides = numsides;
-               // not really the same...  we should store the q2 contents
-               out->texture = out->firstbrushside->texture;
                // convert the contents to our values
                supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(loadmodel, contents);
 
+               // problem: q2bsp brushes have contents but not a texture
+               // problem: q2bsp brushsides *may* have a texture or may not
+               // problem: all brushsides and brushes must have a texture for trace_hittexture functionality to work, and the collision code is engineered around this assumption
+               // solution: nasty hacks
+               brushmissingtextures = false;
+               out->texture = NULL;
+               for (j = 0; j < out->numbrushsides; j++)
+               {
+                       if (out->firstbrushside[j].texture == &mod_q1bsp_texture_solid)
+                               brushmissingtextures = true;
+                       else
+                       {
+                               // if we can find a matching texture on a brush side we can use it instead of creating one
+                               if (out->firstbrushside[j].texture->supercontents == supercontents)
+                                       out->texture = out->firstbrushside[j].texture;
+                       }
+               }
+               if (brushmissingtextures || out->texture == NULL)
+               {
+                       numbrushesmissingtextures++;
+                       // if we didn't find any appropriate texture (matching contents), we'll have to create one
+                       // we could search earlier ones for a matching one but that can be slow
+                       if (out->texture == NULL)
+                       {
+                               texture_t *validtexture;
+                               validtexture = (texture_t *)Mem_Alloc(loadmodel->mempool, sizeof(texture_t));
+                               dpsnprintf(validtexture->name, sizeof(validtexture->name), "brushcollision%i", numcreatedtextures);
+                               validtexture->surfaceflags = 0;
+                               validtexture->supercontents = supercontents;
+                               numcreatedtextures++;
+                               out->texture = validtexture;
+                       }
+                       // out->texture now contains a texture with appropriate contents, copy onto any missing sides
+                       for (j = 0; j < out->numbrushsides; j++)
+                               if (out->firstbrushside[j].texture == &mod_q1bsp_texture_solid)
+                                       out->firstbrushside[j].texture = out->texture;
+               }
+
+               // make a colbrush from the brush
+               q3surfaceflags = 0;
                // make a list of mplane_t structs to construct a colbrush from
                if (maxplanes < out->numbrushsides)
                {
@@ -4653,7 +4727,6 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
                                Mem_Free(planes);
                        planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
                }
-               q3surfaceflags = 0;
                for (j = 0;j < out->numbrushsides;j++)
                {
                        VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
@@ -4661,10 +4734,7 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
                        planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
                        planes[j].texture = out->firstbrushside[j].texture;
                        q3surfaceflags |= planes[j].q3surfaceflags;
-                       // LordHavoc: kind of a mean hack here, but we want the surfaces to have the brush contents
-                       out->firstbrushside[j].texture->supercontents = supercontents;
                }
-               // make the colbrush from the planes
                out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
 
                // this whole loop can take a while (e.g. on redstarrepublic4)
@@ -4672,6 +4742,8 @@ static void Mod_Q2BSP_LoadBrushes(sizebuf_t *sb)
        }
        if (planes)
                Mem_Free(planes);
+       if (numcreatedtextures)
+               Con_DPrintf("Mod_Q2BSP_LoadBrushes: %i brushes own sides that lack textures or have differing contents from the brush, %i textures have been created to describe these contents.\n", numbrushesmissingtextures, numcreatedtextures);
 }
 
 static void Mod_Q2BSP_LoadPOP(sizebuf_t *sb)
@@ -6710,7 +6782,7 @@ static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t s
        if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
        {
                trace_t trace;
-               model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
+               model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, SUPERCONTENTS_SKY);
                return trace.fraction == 1;
        }
        else
@@ -6722,7 +6794,7 @@ static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t s
        }
 }
 
-void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
+void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        const bih_t *bih;
        const bih_leaf_t *leaf;
@@ -6736,6 +6808,7 @@ void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameble
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
 
        bih = &model->collision_bih;
        if(!bih->nodes)
@@ -6786,7 +6859,7 @@ void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameble
        }
 }
 
-static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, const bih_t *bih)
+static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, const bih_t *bih)
 {
        const bih_leaf_t *leaf;
        const bih_node_t *node;
@@ -6802,7 +6875,7 @@ static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend
 
        if (VectorCompare(start, end))
        {
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
@@ -6811,6 +6884,7 @@ static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
 
        // push first node
        nodestackline[nodestackpos][0] = start[0];
@@ -6909,17 +6983,17 @@ static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend
        }
 }
 
-void Mod_CollisionBIH_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
+void Mod_CollisionBIH_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        if (VectorCompare(start, end))
        {
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
-       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, &model->collision_bih);
+       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, &model->collision_bih);
 }
 
-void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *thisbrush_start, colbrushf_t *thisbrush_end, int hitsupercontentsmask)
+void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *thisbrush_start, colbrushf_t *thisbrush_end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        const bih_t *bih;
        const bih_leaf_t *leaf;
@@ -6935,9 +7009,9 @@ void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(thisbrush_start->mins, thisbrush_start->maxs) && VectorCompare(thisbrush_end->mins, thisbrush_end->maxs))
        {
                if (VectorCompare(thisbrush_start->mins, thisbrush_end->mins))
-                       Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, thisbrush_start->mins, hitsupercontentsmask);
+                       Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, thisbrush_start->mins, hitsupercontentsmask, skipsupercontentsmask);
                else
-                       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, thisbrush_start->mins, thisbrush_end->mins, hitsupercontentsmask);
+                       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, thisbrush_start->mins, thisbrush_end->mins, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
@@ -6950,6 +7024,7 @@ void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
 
        // calculate tracebox-like parameters for efficient culling
        VectorMAM(0.5f, thisbrush_start->mins, 0.5f, thisbrush_start->maxs, start);
@@ -7062,7 +7137,7 @@ void Mod_CollisionBIH_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        }
 }
 
-void Mod_CollisionBIH_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
+void Mod_CollisionBIH_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        colboxbrushf_t thisbrush_start, thisbrush_end;
        vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
@@ -7074,25 +7149,25 @@ void Mod_CollisionBIH_TraceBox(dp_model_t *model, const frameblend_t *frameblend
        VectorAdd(end, boxmaxs, boxendmaxs);
        Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
        Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
-       Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask);
+       Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask, skipsupercontentsmask);
 }
 
 
 int Mod_CollisionBIH_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
 {
        trace_t trace;
-       Mod_CollisionBIH_TracePoint(model, NULL, NULL, &trace, point, 0);
+       Mod_CollisionBIH_TracePoint(model, NULL, NULL, &trace, point, 0, 0);
        return trace.startsupercontents;
 }
 
 qboolean Mod_CollisionBIH_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
 {
        trace_t trace;
-       Mod_CollisionBIH_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
+       Mod_CollisionBIH_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0);
        return trace.fraction == 1;
 }
 
-void Mod_CollisionBIH_TracePoint_Mesh(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
+void Mod_CollisionBIH_TracePoint_Mesh(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask)
 {
 #if 0
        // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
@@ -7103,12 +7178,14 @@ void Mod_CollisionBIH_TracePoint_Mesh(dp_model_t *model, const frameblend_t *fra
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
 #if 0
-       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
        hitsupercontents = trace->hitsupercontents;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        trace->startsupercontents = hitsupercontents;
 #endif
 }
@@ -7122,8 +7199,9 @@ int Mod_CollisionBIH_PointSuperContents_Mesh(struct model_s *model, int frame, c
        VectorSet(end, start[0], start[1], model->normalmins[2]);
        memset(&trace, 0, sizeof(trace));
        trace.fraction = 1;
-       trace.hitsupercontentsmask = 0;
-       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+       trace.hitsupercontentsmask = hitsupercontentsmask;
+       trace.skipsupercontentsmask = skipsupercontentsmask;
+       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
        return trace.hitsupercontents;
 #else
        return 0;
@@ -7345,15 +7423,16 @@ static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, dp_model_t *mo
 
 static int markframe = 0;
 
-static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
+static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        int i;
        q3mbrush_t *brush;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        if (mod_collision_bih.integer)
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7364,7 +7443,7 @@ static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameble
                Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
 }
 
-static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
+static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        int i;
        float segmentmins[3], segmentmaxs[3];
@@ -7373,13 +7452,14 @@ static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblen
 
        if (VectorCompare(start, end))
        {
-               Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        segmentmins[0] = min(start[0], end[0]) - 1;
        segmentmins[1] = min(start[1], end[1]) - 1;
        segmentmins[2] = min(start[2], end[2]) - 1;
@@ -7387,7 +7467,7 @@ static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblen
        segmentmaxs[1] = max(start[1], end[1]) + 1;
        segmentmaxs[2] = max(start[2], end[2]) + 1;
        if (mod_collision_bih.integer)
-               Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+               Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7402,7 +7482,7 @@ static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblen
                Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
 }
 
-static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *start, colbrushf_t *end, int hitsupercontentsmask)
+static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, colbrushf_t *start, colbrushf_t *end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        float segmentmins[3], segmentmaxs[3];
        int i;
@@ -7412,9 +7492,9 @@ static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(start->mins, start->maxs) && VectorCompare(end->mins, end->maxs))
        {
                if (VectorCompare(start->mins, end->mins))
-                       Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start->mins, hitsupercontentsmask);
+                       Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start->mins, hitsupercontentsmask, skipsupercontentsmask);
                else
-                       Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, start->mins, end->mins, hitsupercontentsmask);
+                       Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, start->mins, end->mins, hitsupercontentsmask, skipsupercontentsmask);
                return;
        }
 
@@ -7422,6 +7502,7 @@ static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
        segmentmins[0] = min(start->mins[0], end->mins[0]) - 1;
        segmentmins[1] = min(start->mins[1], end->mins[1]) - 1;
        segmentmins[2] = min(start->mins[2], end->mins[2]) - 1;
@@ -7429,7 +7510,7 @@ static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameble
        segmentmaxs[1] = max(start->maxs[1], end->maxs[1]) + 1;
        segmentmaxs[2] = max(start->maxs[2], end->maxs[2]) + 1;
        if (mod_collision_bih.integer)
-               Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+               Mod_CollisionBIH_TraceBrush(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7444,7 +7525,7 @@ static void Mod_Q3BSP_TraceBrush(dp_model_t *model, const frameblend_t *frameble
                Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, ++markframe, segmentmins, segmentmaxs);
 }
 
-static void Mod_Q3BSP_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
+static void Mod_Q3BSP_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
        colboxbrushf_t thisbrush_start, thisbrush_end;
        vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
@@ -7456,7 +7537,7 @@ static void Mod_Q3BSP_TraceBox(dp_model_t *model, const frameblend_t *frameblend
        VectorAdd(end, boxmaxs, boxendmaxs);
        Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
        Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
-       Mod_Q3BSP_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask);
+       Mod_Q3BSP_TraceBrush(model, frameblend, skeleton, trace, &thisbrush_start.brush, &thisbrush_end.brush, hitsupercontentsmask, skipsupercontentsmask);
 }
 
 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
@@ -7495,9 +7576,9 @@ static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const
        return supercontents;
 }
 
-void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
+void Mod_CollisionBIH_TraceLineAgainstSurfaces(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask)
 {
-       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, &model->render_bih);
+       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, &model->render_bih);
 }
 
 
@@ -8027,9 +8108,9 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        int maxvn = 0, numvn = 1;
        char *texturenames = NULL;
        float dist, modelradius, modelyawradius, yawradius;
-       float *v = NULL;
-       float *vt = NULL;
-       float *vn = NULL;
+       float *obj_v = NULL;
+       float *obj_vt = NULL;
+       float *obj_vn = NULL;
        float mins[3];
        float maxs[3];
        float corner[3];
@@ -8043,7 +8124,7 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        skinfile_t *skinfiles = NULL;
        unsigned char *data = NULL;
        int *submodelfirstsurface;
-       msurface_t *surface;
+       msurface_t *tempsurface;
        msurface_t *tempsurfaces;
 
        memset(&vfirst, 0, sizeof(vfirst));
@@ -8149,19 +8230,19 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        if (maxv <= numv)
                        {
                                maxv = max(maxv * 2, 1024);
-                               v = (float *)Mem_Realloc(tempmempool, v, maxv * sizeof(float[3]));
+                               obj_v = (float *)Mem_Realloc(tempmempool, obj_v, maxv * sizeof(float[3]));
                        }
                        if(mod_obj_orientation.integer)
                        {
-                               v[numv*3+0] = atof(argv[1]);
-                               v[numv*3+2] = atof(argv[2]);
-                               v[numv*3+1] = atof(argv[3]);
+                               obj_v[numv*3+0] = atof(argv[1]);
+                               obj_v[numv*3+2] = atof(argv[2]);
+                               obj_v[numv*3+1] = atof(argv[3]);
                        }
                        else
                        {
-                               v[numv*3+0] = atof(argv[1]);
-                               v[numv*3+1] = atof(argv[2]);
-                               v[numv*3+2] = atof(argv[3]);
+                               obj_v[numv*3+0] = atof(argv[1]);
+                               obj_v[numv*3+1] = atof(argv[2]);
+                               obj_v[numv*3+2] = atof(argv[3]);
                        }
                        numv++;
                }
@@ -8170,10 +8251,10 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        if (maxvt <= numvt)
                        {
                                maxvt = max(maxvt * 2, 1024);
-                               vt = (float *)Mem_Realloc(tempmempool, vt, maxvt * sizeof(float[2]));
+                               obj_vt = (float *)Mem_Realloc(tempmempool, obj_vt, maxvt * sizeof(float[2]));
                        }
-                       vt[numvt*2+0] = atof(argv[1]);
-                       vt[numvt*2+1] = 1-atof(argv[2]);
+                       obj_vt[numvt*2+0] = atof(argv[1]);
+                       obj_vt[numvt*2+1] = 1-atof(argv[2]);
                        numvt++;
                }
                else if (!strcmp(argv[0], "vn"))
@@ -8181,19 +8262,19 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        if (maxvn <= numvn)
                        {
                                maxvn = max(maxvn * 2, 1024);
-                               vn = (float *)Mem_Realloc(tempmempool, vn, maxvn * sizeof(float[3]));
+                               obj_vn = (float *)Mem_Realloc(tempmempool, obj_vn, maxvn * sizeof(float[3]));
                        }
                        if(mod_obj_orientation.integer)
                        {
-                               vn[numvn*3+0] = atof(argv[1]);
-                               vn[numvn*3+2] = atof(argv[2]);
-                               vn[numvn*3+1] = atof(argv[3]);
+                               obj_vn[numvn*3+0] = atof(argv[1]);
+                               obj_vn[numvn*3+2] = atof(argv[2]);
+                               obj_vn[numvn*3+1] = atof(argv[3]);
                        }
                        else
                        {
-                               vn[numvn*3+0] = atof(argv[1]);
-                               vn[numvn*3+1] = atof(argv[2]);
-                               vn[numvn*3+2] = atof(argv[3]);
+                               obj_vn[numvn*3+0] = atof(argv[1]);
+                               obj_vn[numvn*3+1] = atof(argv[2]);
+                               obj_vn[numvn*3+2] = atof(argv[3]);
                        }
                        numvn++;
                }
@@ -8234,12 +8315,12 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                                vcurrent.nextindex = -1;
                                vcurrent.textureindex = textureindex;
                                vcurrent.submodelindex = submodelindex;
-                               if (v && index1 >= 0 && index1 < numv)
-                                       VectorCopy(v + 3*index1, vcurrent.v);
-                               if (vt && index2 >= 0 && index2 < numvt)
-                                       Vector2Copy(vt + 2*index2, vcurrent.vt);
-                               if (vn && index3 >= 0 && index3 < numvn)
-                                       VectorCopy(vn + 3*index3, vcurrent.vn);
+                               if (obj_v && index1 >= 0 && index1 < numv)
+                                       VectorCopy(obj_v + 3*index1, vcurrent.v);
+                               if (obj_vt && index2 >= 0 && index2 < numvt)
+                                       Vector2Copy(obj_vt + 2*index2, vcurrent.vt);
+                               if (obj_vn && index3 >= 0 && index3 < numvn)
+                                       VectorCopy(obj_vn + 3*index3, vcurrent.vn);
                                if (numtriangles == 0)
                                {
                                        VectorCopy(vcurrent.v, mins);
@@ -8343,7 +8424,7 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        // allocate storage for the worst case number of surfaces, later we resize
        tempsurfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, numtextures * loadmodel->brush.numsubmodels * sizeof(msurface_t));
        submodelfirstsurface = (int *)Mem_Alloc(loadmodel->mempool, (loadmodel->brush.numsubmodels+1) * sizeof(int));
-       surface = tempsurfaces;
+       tempsurface = tempsurfaces;
        for (submodelindex = 0;submodelindex < loadmodel->brush.numsubmodels;submodelindex++)
        {
                submodelfirstsurface[submodelindex] = loadmodel->num_surfaces;
@@ -8362,10 +8443,10 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        surfacevertices = 0;
                        surfaceelements = 0;
                        // we hack in a texture index in the surface to be fixed up later...
-                       surface->texture = (texture_t *)((size_t)textureindex);
+                       tempsurface->texture = (texture_t *)((size_t)textureindex);
                        // calculate bounds as we go
-                       VectorCopy(thisvertex->v, surface->mins);
-                       VectorCopy(thisvertex->v, surface->maxs);
+                       VectorCopy(thisvertex->v, tempsurface->mins);
+                       VectorCopy(thisvertex->v, tempsurface->maxs);
                        for (;vertexindex < numtriangles*3;vertexindex++)
                        {
                                thisvertex = vertices + vertexindex;
@@ -8374,12 +8455,12 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                                if (thisvertex->textureindex != textureindex)
                                        continue;
                                // add vertex to surface bounds
-                               surface->mins[0] = min(surface->mins[0], thisvertex->v[0]);
-                               surface->mins[1] = min(surface->mins[1], thisvertex->v[1]);
-                               surface->mins[2] = min(surface->mins[2], thisvertex->v[2]);
-                               surface->maxs[0] = max(surface->maxs[0], thisvertex->v[0]);
-                               surface->maxs[1] = max(surface->maxs[1], thisvertex->v[1]);
-                               surface->maxs[2] = max(surface->maxs[2], thisvertex->v[2]);
+                               tempsurface->mins[0] = min(tempsurface->mins[0], thisvertex->v[0]);
+                               tempsurface->mins[1] = min(tempsurface->mins[1], thisvertex->v[1]);
+                               tempsurface->mins[2] = min(tempsurface->mins[2], thisvertex->v[2]);
+                               tempsurface->maxs[0] = max(tempsurface->maxs[0], thisvertex->v[0]);
+                               tempsurface->maxs[1] = max(tempsurface->maxs[1], thisvertex->v[1]);
+                               tempsurface->maxs[2] = max(tempsurface->maxs[2], thisvertex->v[2]);
                                // add the vertex if it is not found in the merged set, and
                                // get its index (triangle element) for the surface
                                vertexhashindex = (unsigned int)(thisvertex->v[0] * 3571 + thisvertex->v[0] * 1777 + thisvertex->v[0] * 457) % (unsigned int)vertexhashsize;
@@ -8402,13 +8483,13 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                                surfaceelements++;
                        }
                        surfacetriangles = surfaceelements / 3;
-                       surface->num_vertices = surfacevertices;
-                       surface->num_triangles = surfacetriangles;
-                       surface->num_firstvertex = firstvertex;
-                       surface->num_firsttriangle = firsttriangle;
-                       firstvertex += surface->num_vertices;
-                       firsttriangle += surface->num_triangles;
-                       surface++;
+                       tempsurface->num_vertices = surfacevertices;
+                       tempsurface->num_triangles = surfacetriangles;
+                       tempsurface->num_firstvertex = firstvertex;
+                       tempsurface->num_firsttriangle = firsttriangle;
+                       firstvertex += tempsurface->num_vertices;
+                       firsttriangle += tempsurface->num_triangles;
+                       tempsurface++;
                        loadmodel->num_surfaces++;
                }
        }
@@ -8455,9 +8536,9 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        // free data
        Mem_Free(vertices);
        Mem_Free(texturenames);
-       Mem_Free(v);
-       Mem_Free(vt);
-       Mem_Free(vn);
+       Mem_Free(obj_v);
+       Mem_Free(obj_vt);
+       Mem_Free(obj_vn);
        Mem_Free(vertexhashtable);
        Mem_Free(vertexhashdata);
 
@@ -8547,24 +8628,24 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
                for (j = 0;j < mod->nummodelsurfaces;j++)
                {
                        const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
-                       const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
+                       const float *v3f = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
                        int k;
                        if (!surface->num_vertices)
                                continue;
                        if (!l)
                        {
                                l = true;
-                               VectorCopy(v, mod->normalmins);
-                               VectorCopy(v, mod->normalmaxs);
+                               VectorCopy(v3f, mod->normalmins);
+                               VectorCopy(v3f, mod->normalmaxs);
                        }
-                       for (k = 0;k < surface->num_vertices;k++, v += 3)
+                       for (k = 0;k < surface->num_vertices;k++, v3f += 3)
                        {
-                               mod->normalmins[0] = min(mod->normalmins[0], v[0]);
-                               mod->normalmins[1] = min(mod->normalmins[1], v[1]);
-                               mod->normalmins[2] = min(mod->normalmins[2], v[2]);
-                               mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
-                               mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
-                               mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
+                               mod->normalmins[0] = min(mod->normalmins[0], v3f[0]);
+                               mod->normalmins[1] = min(mod->normalmins[1], v3f[1]);
+                               mod->normalmins[2] = min(mod->normalmins[2], v3f[2]);
+                               mod->normalmaxs[0] = max(mod->normalmaxs[0], v3f[0]);
+                               mod->normalmaxs[1] = max(mod->normalmaxs[1], v3f[1]);
+                               mod->normalmaxs[2] = max(mod->normalmaxs[2], v3f[2]);
                        }
                }
                corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));