]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
Add an in_releaseall command for debugging/working around stuck keys.
[xonotic/darkplaces.git] / model_brush.c
index 842be1ae26580842924775a2e0fdaa6fe1ede100..ac1a9888eda9f0471d23908aa86bb944234181ca 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)"};
@@ -69,7 +70,7 @@ static texture_t mod_q1bsp_texture_lava;
 static texture_t mod_q1bsp_texture_slime;
 static texture_t mod_q1bsp_texture_water;
 
-static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end);
+static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs);
 
 void Mod_BrushInit(void)
 {
@@ -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, int skipmaterialflagsmask)
 {
        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, int skipmaterialflagsmask);
 
-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, int skipmaterialflagsmask)
 {
        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, skipmaterialflagsmask);
                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, skipmaterialflagsmask);
                return;
        }
 
@@ -923,6 +925,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
@@ -940,6 +944,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
                rhc.trace->fraction = 1;
                rhc.trace->allsolid = true;
                VectorCopy(test, rhc.start);
@@ -959,7 +965,7 @@ 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, int skipmaterialflagsmask)
 {
        // this function currently only supports same size start and end
        double boxsize[3];
@@ -968,9 +974,9 @@ 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, skipmaterialflagsmask);
                else
-                       Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+                       Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
                return;
        }
 
@@ -978,6 +984,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        VectorSubtract(boxmaxs, boxmins, boxsize);
@@ -1020,6 +1028,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
                rhc.trace->fraction = 1;
                rhc.trace->allsolid = true;
                VectorCopy(test, rhc.start);
@@ -1053,7 +1063,7 @@ 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 skipmaterialflagsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
 {
 #if 1
        colbrushf_t cbox;
@@ -1088,6 +1098,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
        trace->fraction = 1;
        Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 #else
@@ -1145,6 +1157,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        VectorCopy(start, rhc.start);
@@ -1157,14 +1171,17 @@ 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 skipmaterialflagsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
 {
        memset(trace, 0, sizeof(trace_t));
        trace->fraction = 1;
+       trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
        if (BoxesOverlap(start, start, cmins, cmaxs))
        {
                trace->startsupercontents |= boxsupercontents;
-               if (hitsupercontentsmask & boxsupercontents)
+               if ((hitsupercontentsmask & boxsupercontents) && !(skipsupercontentsmask & boxsupercontents))
                {
                        trace->startsolid = true;
                        trace->allsolid = true;
@@ -1172,11 +1189,11 @@ 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)
+static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
 {
        trace_t trace;
-       Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
-       return trace.fraction == 1;
+       Mod_Q1BSP_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
+       return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
 }
 
 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
@@ -1362,6 +1379,12 @@ 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;
+               // skip surfaces matching the skipmaterialflagsmask (e.g. MATERIALFLAG_NOSHADOW)
+               if (t->trace->skipmaterialflagsmask & surface->texture->currentmaterialflags)
+                       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 +1515,7 @@ 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, int skipmaterialflagsmask)
 {
        RecursiveHullCheckTraceInfo_t rhc;
 
@@ -1500,6 +1523,8 @@ 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->skipmaterialflagsmask = skipmaterialflagsmask;
        rhc.trace->fraction = 1;
        rhc.trace->allsolid = true;
        rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
@@ -1619,9 +1644,9 @@ 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;
-       texture_t *tx, *tx2, *anims[10], *altanims[10];
+       int i, j, k, num, max, altmax, mtwidth, mtheight, doffset, incomplete, nummiptex = 0, firstskynoshadowtexture = 0;
+       skinframe_t *skinframemissing;
+       texture_t *tx, *tx2, *anims[10], *altanims[10], *currentskynoshadowtexture;
        texture_t backuptex;
        unsigned char *data, *mtdata;
        const char *s;
@@ -1634,39 +1659,75 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
 
        loadmodel->data_textures = NULL;
 
-       // add two slots for notexture walls and notexture liquids
+       // add two slots for notexture walls and notexture liquids, and duplicate
+       // all sky textures; sky surfaces can be shadow-casting or not, the surface
+       // loading will choose according to the contents behind the surface
+       // (necessary to support e1m5 logo shadow which has a SKY contents brush,
+       // while correctly treating sky textures as occluders in other situations).
        if (sb->cursize)
        {
+               int numsky = 0;
+               size_t watermark;
                nummiptex = MSG_ReadLittleLong(sb);
                loadmodel->num_textures = nummiptex + 2;
-               loadmodel->num_texturesperskin = loadmodel->num_textures;
+               // save the position so we can go back to it
+               watermark = sb->readcount;
+               for (i = 0; i < nummiptex; i++)
+               {
+                       doffset = MSG_ReadLittleLong(sb);
+                       if (r_nosurftextures.integer)
+                               continue;
+                       if (doffset == -1)
+                       {
+                               Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
+                               continue;
+                       }
+
+                       MSG_InitReadBuffer(&miptexsb, sb->data + doffset, sb->cursize - doffset);
+
+                       // copy name, but only up to 16 characters
+                       // (the output buffer can hold more than this, but the input buffer is
+                       //  only 16)
+                       for (j = 0; j < 16; j++)
+                               name[j] = MSG_ReadByte(&miptexsb);
+                       name[j] = 0;
+                       // pretty up the buffer (replacing any trailing garbage with 0)
+                       for (j = (int)strlen(name); j < 16; j++)
+                               name[j] = 0;
+
+                       if (!strncmp(name, "sky", 3))
+                               numsky++;
+               }
+
+               // bump it back to where we started parsing
+               sb->readcount = watermark;
+
+               firstskynoshadowtexture = loadmodel->num_textures;
+               loadmodel->num_textures += numsky;
        }
        else
        {
                loadmodel->num_textures = 2;
-               loadmodel->num_texturesperskin = loadmodel->num_textures;
+               firstskynoshadowtexture = loadmodel->num_textures;
        }
+       loadmodel->num_texturesperskin = loadmodel->num_textures;
 
        loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
 
+       // we'll be writing to these in parallel for sky textures
+       currentskynoshadowtexture = loadmodel->data_textures + firstskynoshadowtexture;
+
        // fill out all slots with notexture
-       if (cls.state != ca_dedicated)
-               skinframe = R_SkinFrame_LoadMissing();
-       else
-               skinframe = NULL;
+       skinframemissing = R_SkinFrame_LoadMissing();
        for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
        {
                strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
                tx->width = 16;
                tx->height = 16;
                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->materialshaderpass->skinframes[0] = skinframemissing;
+               tx->currentskinframe = skinframemissing;
                tx->basematerialflags = MATERIALFLAG_WALL;
                if (i == loadmodel->num_textures - 1)
                {
@@ -1710,7 +1771,6 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                s += 5;
        FS_StripExtension(s, mapname, sizeof(mapname));
 
-       // just to work around bounds checking when debugging with it (array index out of bounds error thing)
        // LordHavoc: mostly rewritten map texture loader
        for (i = 0;i < nummiptex;i++)
        {
@@ -1776,6 +1836,10 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                tx->height = mtheight;
                tx->basealpha = 1.0f;
 
+               // start out with no animation
+               tx->currentframe = tx;
+               tx->currentskinframe = tx->materialshaderpass != NULL ? tx->materialshaderpass->skinframes[0] : NULL;
+
                if (tx->name[0] == '*')
                {
                        if (!strncmp(tx->name, "*lava", 5))
@@ -1825,7 +1889,7 @@ 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 +1918,16 @@ 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->currentskinframe = tx->materialshaderpass->skinframes[0];
                }
 
                tx->basematerialflags = MATERIALFLAG_WALL;
@@ -1877,7 +1942,7 @@ 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->currentskinframe != NULL && tx->currentskinframe->hasalpha)
                                tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
                }
                else if (tx->name[0] == '{') // fence textures
@@ -1890,16 +1955,21 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                        tx->basematerialflags |= MATERIALFLAG_REFLECTION;
                }
                else if (!strncmp(tx->name, "sky", 3))
-                       tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
+                       tx->basematerialflags = MATERIALFLAG_SKY;
                else if (!strcmp(tx->name, "caulk"))
                        tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
-               else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
+               else if (tx->currentskinframe != NULL && tx->currentskinframe->hasalpha)
                        tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
-
-               // start out with no animation
-               tx->currentframe = tx;
-               tx->currentskinframe = tx->skinframes[0];
                tx->currentmaterialflags = tx->basematerialflags;
+
+               // duplicate of sky with NOSHADOW
+               if (tx->basematerialflags & MATERIALFLAG_SKY)
+               {
+                       *currentskynoshadowtexture = *tx;
+                       currentskynoshadowtexture->basematerialflags |= MATERIALFLAG_NOSHADOW;
+                       tx->skynoshadowtexture = currentskynoshadowtexture;
+                       currentskynoshadowtexture++;
+               }
        }
 
        // sequence the animations
@@ -2685,7 +2755,7 @@ 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 iu, iv, lightmapx = 0, lightmapy = 0;
@@ -3173,6 +3243,26 @@ static void Mod_Q1BSP_LoadPlanes(sizebuf_t *sb)
        }
 }
 
+// fixes up sky surfaces that have SKY contents behind them, so that they do not cast shadows (e1m5 logo shadow trick).
+static void Mod_Q1BSP_AssignNoShadowSkySurfaces(dp_model_t *mod)
+{
+       int i;
+       msurface_t *surface;
+       vec3_t center;
+       int contents;
+       for (i = 0, surface = mod->data_surfaces + mod->firstmodelsurface; i < mod->nummodelsurfaces; i++, surface++)
+       {
+               if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
+               {
+                       // check if the point behind the surface polygon is SOLID or SKY contents
+                       VectorMAMAM(0.5f, surface->mins, 0.5f, surface->maxs, -0.25f, mod->surfmesh.data_normal3f + 3*surface->num_firstvertex, center);
+                       contents = Mod_Q1BSP_PointSuperContents(mod, 0, center);
+                       if (!(contents & SUPERCONTENTS_SOLID))
+                               surface->texture = surface->texture->skynoshadowtexture;
+               }
+       }
+}
+
 static void Mod_Q1BSP_LoadMapBrushes(void)
 {
 #if 0
@@ -3787,7 +3877,7 @@ 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, int skipmaterialflagsmask);
 
 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
 {
@@ -4041,6 +4131,9 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                // set node/leaf parents for this submodel
                Mod_Q1BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
 
+               // this has to occur after hull info has been set, as it uses Mod_Q1BSP_PointSuperContents
+               Mod_Q1BSP_AssignNoShadowSkySurfaces(mod);
+
                // make the model surface list (used by shadowing/lighting)
                mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
                Mod_MakeSortedSurfaces(mod);
@@ -4333,7 +4426,9 @@ 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)
@@ -4344,19 +4439,24 @@ 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)
@@ -4371,7 +4471,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                {
                                        // sky is a rather specific thing
                                        q2flags &= ~Q2SURF_NODRAW; // quake2 had a slightly different meaning than we have in mind here...
-                                       tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
+                                       tx->basematerialflags = MATERIALFLAG_SKY;
                                        tx->supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE;
                                        tx->surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
                                }
@@ -4389,7 +4489,7 @@ 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;
@@ -4397,16 +4497,29 @@ 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)
+                               if ((q2flags & Q2SURF_FLOWING) && tx->materialshaderpass != NULL)
+                               {
+                                       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))
                                {
-                                       tx->tcmods[0].tcmod = Q3TCMOD_SCROLL;
-                                       tx->tcmods[0].parms[0] = -1.6f;
-                                       tx->tcmods[0].parms[1] = 0.0f;
+                                       if (!mod_q2bsp_littransparentsurfaces.integer)
+                                               tx->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
                                }
                                if (q2flags & Q2SURF_NODRAW)
                                {
@@ -4421,7 +4534,7 @@ 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 != NULL ? tx->materialshaderpass->skinframes[0] : NULL;
                                tx->currentmaterialflags = tx->basematerialflags;
                                loadmodel->num_texturesperskin++;
                                loadmodel->num_textures = loadmodel->num_texturesperskin;
@@ -4619,6 +4732,9 @@ 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);
@@ -4631,7 +4747,7 @@ 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);
@@ -4641,11 +4757,49 @@ 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)
                {
@@ -4654,7 +4808,6 @@ 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);
@@ -4662,10 +4815,7 @@ 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)
@@ -4673,6 +4823,8 @@ 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)
@@ -5646,7 +5798,7 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
                loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
 
        // allocate a texture pool if we need it
-       if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
+       if (loadmodel->texturepool == NULL)
                loadmodel->texturepool = R_AllocTexturePool();
 
        mergedpixels = (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4);
@@ -6645,7 +6797,7 @@ static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambie
        //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
 }
 
-static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
+static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3], double endpos[3])
 {
        double t1, t2;
        double midf, mid[3];
@@ -6695,35 +6847,38 @@ static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p
                // or if start is solid and end is empty
                // as these degenerate cases usually indicate the eye is in solid and
                // should see the target point anyway
-               ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
+               ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid, endpos);
                if (ret != 0)
                        return ret;
-               ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
+               ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2, endpos);
                if (ret != 1)
                        return ret;
+               VectorCopy(mid, endpos);
                return 2;
        }
        return ((mleaf_t *)node)->clusterindex < 0;
 }
 
-static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
+static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
 {
        if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
        {
                trace_t trace;
-               model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
-               return trace.fraction == 1;
+               model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
+               return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
        }
        else
        {
-               double tracestart[3], traceend[3];
+               double tracestart[3], traceend[3], traceendpos[3];
                VectorCopy(start, tracestart);
                VectorCopy(end, traceend);
-               return !Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend);
+               VectorCopy(end, traceendpos);
+               Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend, traceendpos);
+               return BoxesOverlap(traceendpos, traceendpos, acceptmins, acceptmaxs);
        }
 }
 
-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, int skipmaterialflagsmask)
 {
        const bih_t *bih;
        const bih_leaf_t *leaf;
@@ -6737,6 +6892,8 @@ 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;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
 
        bih = &model->collision_bih;
        if(!bih->nodes)
@@ -6787,7 +6944,7 @@ 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, int skipmaterialflagsmask, const bih_t *bih)
 {
        const bih_leaf_t *leaf;
        const bih_node_t *node;
@@ -6803,7 +6960,7 @@ 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, skipmaterialflagsmask);
                return;
        }
 
@@ -6812,6 +6969,8 @@ 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;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
 
        // push first node
        nodestackline[nodestackpos][0] = start[0];
@@ -6833,7 +6992,7 @@ static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend
                sweepnodemaxs[0] = max(nodestart[0], nodeend[0]) + 1;
                sweepnodemaxs[1] = max(nodestart[1], nodeend[1]) + 1;
                sweepnodemaxs[2] = max(nodestart[2], nodeend[2]) + 1;
-               if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs))
+               if (!BoxesOverlap(sweepnodemins, sweepnodemaxs, node->mins, node->maxs) && !collision_bih_fullrecursion.integer)
                        continue;
                if (node->type <= BIH_SPLITZ && nodestackpos+2 <= 1024)
                {
@@ -6843,6 +7002,8 @@ static void Mod_CollisionBIH_TraceLineShared(dp_model_t *model, const frameblend
                        d2 = node->backmax - nodeend[axis];
                        d3 = nodestart[axis] - node->frontmin;
                        d4 = nodeend[axis] - node->frontmin;
+                       if (collision_bih_fullrecursion.integer)
+                               d1 = d2 = d3 = d4 = 1; // force full recursion
                        switch((d1 < 0) | ((d2 < 0) << 1) | ((d3 < 0) << 2) | ((d4 < 0) << 3))
                        {
                        case  0: /* >>>> */                     VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->back;                      VectorCopy(nodestart,             nodestackline[nodestackpos]); VectorCopy(              nodeend, nodestackline[nodestackpos] + 3); nodestack[nodestackpos++] = node->front; break;
@@ -6910,17 +7071,17 @@ 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, int skipmaterialflagsmask)
 {
        if (VectorCompare(start, end))
        {
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
                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, skipmaterialflagsmask, &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, int skipmaterialflagsmask)
 {
        const bih_t *bih;
        const bih_leaf_t *leaf;
@@ -6936,9 +7097,9 @@ 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, skipmaterialflagsmask);
                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, skipmaterialflagsmask);
                return;
        }
 
@@ -6951,6 +7112,8 @@ 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;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
 
        // calculate tracebox-like parameters for efficient culling
        VectorMAM(0.5f, thisbrush_start->mins, 0.5f, thisbrush_start->maxs, start);
@@ -7063,7 +7226,7 @@ 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, int skipmaterialflagsmask)
 {
        colboxbrushf_t thisbrush_start, thisbrush_end;
        vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
@@ -7075,25 +7238,25 @@ 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, skipmaterialflagsmask);
 }
 
 
 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, 0);
        return trace.startsupercontents;
 }
 
-qboolean Mod_CollisionBIH_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
+qboolean Mod_CollisionBIH_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end, const vec3_t acceptmins, const vec3_t acceptmaxs)
 {
        trace_t trace;
-       Mod_CollisionBIH_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
-       return trace.fraction == 1;
+       Mod_CollisionBIH_TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK, 0, MATERIALFLAGMASK_TRANSLUCENT);
+       return trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, acceptmins, acceptmaxs);
 }
 
-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, int skipmaterialflagsmask)
 {
 #if 0
        // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
@@ -7104,12 +7267,16 @@ 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;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
 #if 0
-       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
+       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
        hitsupercontents = trace->hitsupercontents;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
        trace->startsupercontents = hitsupercontents;
 #endif
 }
@@ -7123,8 +7290,10 @@ 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;
+       trace.skipmaterialflagsmask = skipmaterialflagsmask;
+       Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
        return trace.hitsupercontents;
 #else
        return 0;
@@ -7346,15 +7515,17 @@ 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 skipmaterialflagsmask)
 {
        int i;
        q3mbrush_t *brush;
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
        if (mod_collision_bih.integer)
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
+               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7365,7 +7536,7 @@ 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 skipmaterialflagsmask)
 {
        int i;
        float segmentmins[3], segmentmaxs[3];
@@ -7374,13 +7545,15 @@ 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, skipmaterialflagsmask);
                return;
        }
 
        memset(trace, 0, sizeof(*trace));
        trace->fraction = 1;
        trace->hitsupercontentsmask = hitsupercontentsmask;
+       trace->skipsupercontentsmask = skipsupercontentsmask;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
        segmentmins[0] = min(start[0], end[0]) - 1;
        segmentmins[1] = min(start[1], end[1]) - 1;
        segmentmins[2] = min(start[2], end[2]) - 1;
@@ -7388,7 +7561,7 @@ 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, skipmaterialflagsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7403,7 +7576,7 @@ 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, int skipmaterialflagsmask)
 {
        float segmentmins[3], segmentmaxs[3];
        int i;
@@ -7413,9 +7586,9 @@ 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, skipmaterialflagsmask);
                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, skipmaterialflagsmask);
                return;
        }
 
@@ -7423,6 +7596,8 @@ 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;
+       trace->skipmaterialflagsmask = skipmaterialflagsmask;
        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;
@@ -7430,7 +7605,7 @@ 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, skipmaterialflagsmask);
        else if (model->brush.submodel)
        {
                for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
@@ -7445,7 +7620,7 @@ 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, int skipmaterialflagsmask)
 {
        colboxbrushf_t thisbrush_start, thisbrush_end;
        vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
@@ -7457,7 +7632,7 @@ 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, skipmaterialflagsmask);
 }
 
 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
@@ -7496,9 +7671,9 @@ 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, int skipmaterialflagsmask)
 {
-       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, &model->render_bih);
+       Mod_CollisionBIH_TraceLineShared(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, &model->render_bih);
 }