]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_brush.c
Fix client version of ambientsound
[xonotic/darkplaces.git] / model_brush.c
index 36053f513b656ef6e2edcd0f2ef2d62310c17751..8fb07d0064e3705e474835865601c3259a08dbe6 100644 (file)
@@ -26,42 +26,46 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "wad.h"
 
 
-//cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
-cvar_t mod_bsp_portalize = {0, "mod_bsp_portalize", "1", "enables portal generation from BSP tree (may take several seconds per map), used by r_drawportals, r_useportalculling, r_shadow_realtime_world_compileportalculling, sv_cullentities_portal"};
-cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
-cvar_t r_nosurftextures = {0, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
-cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
-cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
-cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
-cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
-cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
-cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
-cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
-cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
-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_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)"};
-cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
-cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
-cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
-cvar_t mod_q3bsp_nolightmaps = {CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
-cvar_t mod_q3bsp_tracelineofsight_brushes = {0, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
-cvar_t mod_q3bsp_sRGBlightmaps = {0, "mod_q3bsp_sRGBlightmaps", "0", "treat lightmaps from Q3 maps as sRGB when vid_sRGB is active"};
-cvar_t mod_q3shader_default_offsetmapping = {CVAR_SAVE, "mod_q3shader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are using q3 shader files"};
-cvar_t mod_q3shader_default_offsetmapping_scale = {CVAR_SAVE, "mod_q3shader_default_offsetmapping_scale", "1", "default scale used for offsetmapping"};
-cvar_t mod_q3shader_default_offsetmapping_bias = {CVAR_SAVE, "mod_q3shader_default_offsetmapping_bias", "0", "default bias used for offsetmapping"};
-cvar_t mod_q3shader_default_polygonfactor = {0, "mod_q3shader_default_polygonfactor", "0", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
-cvar_t mod_q3shader_default_polygonoffset = {0, "mod_q3shader_default_polygonoffset", "-2", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
-cvar_t mod_q3shader_force_addalpha = {0, "mod_q3shader_force_addalpha", "0", "treat GL_ONE GL_ONE (or add) blendfunc as GL_SRC_ALPHA GL_ONE for compatibility with older DarkPlaces releases"};
-cvar_t mod_q3shader_force_terrain_alphaflag = {0, "mod_q3shader_force_terrain_alphaflag", "0", "for multilayered terrain shaders force TEXF_ALPHA flag on both layers"};
-
-cvar_t mod_q1bsp_polygoncollisions = {0, "mod_q1bsp_polygoncollisions", "0", "disables use of precomputed cliphulls and instead collides with polygons (uses Bounding Interval Hierarchy optimizations)"};
-cvar_t mod_collision_bih = {0, "mod_collision_bih", "1", "enables use of generated Bounding Interval Hierarchy tree instead of compiled bsp tree in collision code"};
-cvar_t mod_recalculatenodeboxes = {0, "mod_recalculatenodeboxes", "1", "enables use of generated node bounding boxes based on BSP tree portal reconstruction, rather than the node boxes supplied by the map compiler"};
+//cvar_t r_subdivide_size = {CVAR_CLIENT | CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
+cvar_t mod_bsp_portalize = {CVAR_CLIENT | CVAR_SERVER, "mod_bsp_portalize", "1", "enables portal generation from BSP tree (may take several seconds per map), used by r_drawportals, r_useportalculling, r_shadow_realtime_world_compileportalculling, sv_cullentities_portal"};
+cvar_t r_novis = {CVAR_CLIENT, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
+cvar_t r_nosurftextures = {CVAR_CLIENT, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
+cvar_t r_subdivisions_tolerance = {CVAR_CLIENT, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
+cvar_t r_subdivisions_mintess = {CVAR_CLIENT, "r_subdivisions_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
+cvar_t r_subdivisions_maxtess = {CVAR_CLIENT, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
+cvar_t r_subdivisions_maxvertices = {CVAR_CLIENT, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
+cvar_t r_subdivisions_collision_tolerance = {CVAR_CLIENT, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
+cvar_t r_subdivisions_collision_mintess = {CVAR_CLIENT, "r_subdivisions_collision_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
+cvar_t r_subdivisions_collision_maxtess = {CVAR_CLIENT, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
+cvar_t r_subdivisions_collision_maxvertices = {CVAR_CLIENT, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
+cvar_t r_trippy = {CVAR_CLIENT, "r_trippy", "0", "easter egg"};
+cvar_t r_fxaa = {CVAR_CLIENT | CVAR_SAVE, "r_fxaa", "0", "fast approximate anti aliasing"};
+cvar_t mod_noshader_default_offsetmapping = {CVAR_CLIENT | 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 = {CVAR_CLIENT | CVAR_SERVER, "mod_obj_orientation", "1", "fix orientation of OBJ models to the usual conventions (if zero, use coordinates as is)"};
+cvar_t mod_q2bsp_littransparentsurfaces = {CVAR_CLIENT, "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 = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
+cvar_t mod_q3bsp_curves_collisions_stride = {CVAR_CLIENT | CVAR_SERVER, "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 = {CVAR_CLIENT | CVAR_SERVER, "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)"};
+cvar_t mod_q3bsp_optimizedtraceline = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
+cvar_t mod_q3bsp_debugtracebrush = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
+cvar_t mod_q3bsp_lightmapmergepower = {CVAR_CLIENT | CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
+cvar_t mod_q3bsp_nolightmaps = {CVAR_CLIENT | CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
+cvar_t mod_q3bsp_tracelineofsight_brushes = {CVAR_CLIENT | CVAR_SERVER, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
+cvar_t mod_q3bsp_sRGBlightmaps = {CVAR_CLIENT, "mod_q3bsp_sRGBlightmaps", "0", "treat lightmaps from Q3 maps as sRGB when vid_sRGB is active"};
+cvar_t mod_q3bsp_lightgrid_texture = {CVAR_CLIENT, "mod_q3bsp_lightgrid_texture", "1", "directly apply the lightgrid as a global texture rather than only reading it at the entity origin"};
+cvar_t mod_q3bsp_lightgrid_world_surfaces = {CVAR_CLIENT, "mod_q3bsp_lightgrid_world_surfaces", "0", "apply lightgrid lighting to the world bsp geometry rather than using lightmaps (experimental/debug tool)"};
+cvar_t mod_q3bsp_lightgrid_bsp_surfaces = {CVAR_CLIENT, "mod_q3bsp_lightgrid_bsp_surfaces", "0", "apply lightgrid lighting to bsp models other than the world rather than using their lightmaps (experimental/debug tool)"};
+cvar_t mod_q3shader_default_offsetmapping = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces that are using q3 shader files"};
+cvar_t mod_q3shader_default_offsetmapping_scale = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping_scale", "1", "default scale used for offsetmapping"};
+cvar_t mod_q3shader_default_offsetmapping_bias = {CVAR_CLIENT | CVAR_SAVE, "mod_q3shader_default_offsetmapping_bias", "0", "default bias used for offsetmapping"};
+cvar_t mod_q3shader_default_polygonfactor = {CVAR_CLIENT, "mod_q3shader_default_polygonfactor", "0", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
+cvar_t mod_q3shader_default_polygonoffset = {CVAR_CLIENT, "mod_q3shader_default_polygonoffset", "-2", "biases depth values of 'polygonoffset' shaders to prevent z-fighting artifacts"};
+cvar_t mod_q3shader_default_refractive_index = {CVAR_CLIENT, "mod_q3shader_default_refractive_index", "1.33", "angle of refraction specified as n to apply when a photon is refracted, example values are: 1.0003 = air, water = 1.333, crown glass = 1.517, flint glass = 1.655, diamond = 2.417"};
+cvar_t mod_q3shader_force_addalpha = {CVAR_CLIENT, "mod_q3shader_force_addalpha", "0", "treat GL_ONE GL_ONE (or add) blendfunc as GL_SRC_ALPHA GL_ONE for compatibility with older DarkPlaces releases"};
+cvar_t mod_q3shader_force_terrain_alphaflag = {CVAR_CLIENT, "mod_q3shader_force_terrain_alphaflag", "0", "for multilayered terrain shaders force TEXF_ALPHA flag on both layers"};
+
+cvar_t mod_q1bsp_polygoncollisions = {CVAR_CLIENT | CVAR_SERVER, "mod_q1bsp_polygoncollisions", "0", "disables use of precomputed cliphulls and instead collides with polygons (uses Bounding Interval Hierarchy optimizations)"};
+cvar_t mod_recalculatenodeboxes = {CVAR_CLIENT | CVAR_SERVER, "mod_recalculatenodeboxes", "1", "enables use of generated node bounding boxes based on BSP tree portal reconstruction, rather than the node boxes supplied by the map compiler"};
 
 static texture_t mod_q1bsp_texture_solid;
 static texture_t mod_q1bsp_texture_sky;
@@ -69,7 +73,7 @@ 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 +93,7 @@ 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);
@@ -97,16 +102,19 @@ void Mod_BrushInit(void)
        Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
        Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
        Cvar_RegisterVariable(&mod_q3bsp_sRGBlightmaps);
+       Cvar_RegisterVariable(&mod_q3bsp_lightgrid_texture);
+       Cvar_RegisterVariable(&mod_q3bsp_lightgrid_world_surfaces);
+       Cvar_RegisterVariable(&mod_q3bsp_lightgrid_bsp_surfaces);
        Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
        Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping);
        Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_scale);
        Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping_bias);
        Cvar_RegisterVariable(&mod_q3shader_default_polygonfactor);
        Cvar_RegisterVariable(&mod_q3shader_default_polygonoffset);
+       Cvar_RegisterVariable(&mod_q3shader_default_refractive_index);
        Cvar_RegisterVariable(&mod_q3shader_force_addalpha);
        Cvar_RegisterVariable(&mod_q3shader_force_terrain_alphaflag);
        Cvar_RegisterVariable(&mod_q1bsp_polygoncollisions);
-       Cvar_RegisterVariable(&mod_collision_bih);
        Cvar_RegisterVariable(&mod_recalculatenodeboxes);
 
        // these games were made for older DP engines and are no longer
@@ -147,7 +155,7 @@ static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
        if (model == NULL)
                return NULL;
 
-       // LordHavoc: modified to start at first clip node,
+       // LadyHavoc: modified to start at first clip node,
        // in other words: first node of the (sub)model
        node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
        while (node->plane)
@@ -558,32 +566,13 @@ static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *in
        for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
        {
                surface = info->model->data_surfaces + *mark;
+               if(!surface->texture)
+                       continue;
                if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
                {
-                       if(surface->deprecatedq3num_bboxstride > 0)
-                       {
-                               int i, cnt, tri;
-                               cnt = (surface->num_triangles + surface->deprecatedq3num_bboxstride - 1) / surface->deprecatedq3num_bboxstride;
-                               for(i = 0; i < cnt; ++i)
-                               {
-                                       if(BoxesOverlap(surface->deprecatedq3data_bbox6f + i * 6, surface->deprecatedq3data_bbox6f + i * 6 + 3, info->absmin, info->absmax))
-                                       {
-                                               for(k = 0; k < surface->deprecatedq3num_bboxstride; ++k)
-                                               {
-                                                       tri = i * surface->deprecatedq3num_bboxstride + k;
-                                                       if(tri >= surface->num_triangles)
-                                                               break;
-                                                       Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, tri);
-                                               }
-                                       }
-                               }
-                       }
-                       else
+                       for (k = 0;k < surface->num_triangles;k++)
                        {
-                               for (k = 0;k < surface->num_triangles;k++)
-                               {
-                                       Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
-                               }
+                               Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
                        }
                }
        }
@@ -638,7 +627,7 @@ static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, v
        VectorCopy(info.center, out);
 }
 
-int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
+int Mod_Q1BSP_SuperContentsFromNativeContents(int nativecontents)
 {
        switch(nativecontents)
        {
@@ -658,7 +647,7 @@ int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativeconte
        return 0;
 }
 
-int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
+int Mod_Q1BSP_NativeContentsFromSuperContents(int supercontents)
 {
        if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
                return CONTENTS_SOLID;
@@ -811,7 +800,7 @@ static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int nu
        // we reached a leaf contents
 
        // check for empty
-       num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
+       num = Mod_Q1BSP_SuperContentsFromNativeContents(num);
        if (!t->trace->startfound)
        {
                t->trace->startfound = true;
@@ -866,7 +855,7 @@ static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, i
                plane = planes + nodes[num].planenum;
                num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
        }
-       num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
+       num = Mod_Q1BSP_SuperContentsFromNativeContents(num);
        t->trace->startsupercontents |= num;
        if (num & SUPERCONTENTS_LIQUIDSMASK)
                t->trace->inwater = true;
@@ -885,7 +874,7 @@ 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 +889,22 @@ 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 +912,8 @@ 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 +931,8 @@ 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 +952,7 @@ 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 +961,9 @@ 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 +971,8 @@ 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);
@@ -985,7 +980,7 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameb
                rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
        else if (model->brush.ishlbsp)
        {
-               // LordHavoc: this has to have a minor tolerance (the .1) because of
+               // LadyHavoc: this has to have a minor tolerance (the .1) because of
                // minor float precision errors from the box being transformed around
                if (boxsize[0] < 32.1)
                {
@@ -999,7 +994,7 @@ static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameb
        }
        else
        {
-               // LordHavoc: this has to have a minor tolerance (the .1) because of
+               // LadyHavoc: this has to have a minor tolerance (the .1) because of
                // minor float precision errors from the box being transformed around
                if (boxsize[0] < 32.1)
                        rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
@@ -1020,6 +1015,8 @@ 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);
@@ -1050,10 +1047,10 @@ static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const
                plane = planes + nodes[num].planenum;
                num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
        }
-       return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
+       return Mod_Q1BSP_SuperContentsFromNativeContents(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 +1085,8 @@ 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 +1144,8 @@ 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 +1158,17 @@ 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 +1176,11 @@ 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)
@@ -1240,6 +1244,8 @@ static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambie
                        surface = model->data_surfaces + node->firstsurface;
                        for (i = 0;i < node->numsurfaces;i++, surface++)
                        {
+                               if(!surface->texture)
+                                       continue;
                                if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo || !surface->lightmapinfo->samples)
                                        continue;       // no lightmaps
 
@@ -1288,11 +1294,11 @@ static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambie
                                        w11 = (    dsfrac) * (    dtfrac) * (1.0f / 128.0f);
 
                                        // values for pointer math
-                                       line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
-                                       size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
+                                       line3 = lmwidth * 3; // LadyHavoc: *3 for colored lighting
+                                       size3 = lmwidth * lmheight * 3; // LadyHavoc: *3 for colored lighting
 
                                        // look up the pixel
-                                       lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
+                                       lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LadyHavoc: *3 for colored lighting
 
                                        // bilinear filter each lightmap style, and sum them
                                        for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
@@ -1356,12 +1362,20 @@ static const texture_t *Mod_Q1BSP_TraceLineAgainstSurfacesFindTextureOnNode(Recu
        surface = model->data_surfaces + node->firstsurface;
        for (i = 0;i < node->numsurfaces;i++, surface++)
        {
+               if(!surface->texture)
+                       continue;
                // skip surfaces whose bounding box does not include the point
 //             if (!BoxesOverlap(mid, mid, surface->mins, surface->maxs))
 //                     continue;
                // 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
@@ -1440,7 +1454,7 @@ static int Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(RecursiveHullCheck
                }
 
                // the line intersects, find intersection point
-               // LordHavoc: this uses the original trace for maximum accuracy
+               // LadyHavoc: this uses the original trace for maximum accuracy
                if (plane->type < 3)
                {
                        t1 = t->start[plane->type] - plane->dist;
@@ -1468,7 +1482,7 @@ static int Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(RecursiveHullCheck
                return Mod_Q1BSP_TraceLineAgainstSurfacesRecursiveBSPNode(t, model, node->children[side ^ 1], mid, p2);
        }
        leaf = (const mleaf_t *)node;
-       side = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, leaf->contents);
+       side = Mod_Q1BSP_SuperContentsFromNativeContents(leaf->contents);
        if (!t->trace->startfound)
        {
                t->trace->startfound = true;
@@ -1492,7 +1506,7 @@ 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 +1514,8 @@ 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
@@ -1611,17 +1627,17 @@ static void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int
                }
        }
 
-       loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h, vid.sRGB3D);
-       loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h, vid.sRGB3D);
+       loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h, 0, 0, 0, vid.sRGB3D);
+       loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h, 0, 0, 0, vid.sRGB3D);
        Mem_Free(solidpixels);
        Mem_Free(alphapixels);
 }
 
 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 +1650,75 @@ 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 = (int)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(loadmodel->mempool, skinframemissing);
+               tx->materialshaderpass->skinframes[0] = skinframemissing;
+               tx->currentskinframe = skinframemissing;
                tx->basematerialflags = MATERIALFLAG_WALL;
                if (i == loadmodel->num_textures - 1)
                {
@@ -1684,6 +1736,7 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                // clear water settings
                tx->reflectmin = 0;
                tx->reflectmax = 1;
+               tx->refractive_index = mod_q3shader_default_refractive_index.value;
                tx->refractfactor = 1;
                Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
                tx->reflectfactor = 1;
@@ -1710,8 +1763,7 @@ 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
+       // LadyHavoc: mostly rewritten map texture loader
        for (i = 0;i < nummiptex;i++)
        {
                doffset = MSG_ReadLittleLong(sb);
@@ -1759,23 +1811,34 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                if ((mtwidth & 15) || (mtheight & 15))
                        Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, name);
 
-               // LordHavoc: force all names to lowercase
+               // LadyHavoc: force all names to lowercase
                for (j = 0;name[j];j++)
                        if (name[j] >= 'A' && name[j] <= 'Z')
                                name[j] += 'a' - 'A';
 
-               // LordHavoc: backup the texture_t because q3 shader loading overwrites it
+               tx = loadmodel->data_textures + i;
+               // try to load shader or external textures, but first we have to backup the texture_t because shader loading overwrites it even if it fails
                backuptex = loadmodel->data_textures[i];
-               if (name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
+               if (name[0] && (Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + i, va(vabuf, sizeof(vabuf), "%s/%s", mapname, name), false, false, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL) ||
+                               Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + i, va(vabuf, sizeof(vabuf), "%s"   , name), false, false, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL)))
+               {
+                       // set the width/height fields which are used for parsing texcoords in this bsp format
+                       tx->width = mtwidth;
+                       tx->height = mtheight;
                        continue;
+               }
+               // no luck with loading shaders or external textures - restore the in-progress texture loading
                loadmodel->data_textures[i] = backuptex;
 
-               tx = loadmodel->data_textures + i;
                strlcpy(tx->name, name, sizeof(tx->name));
                tx->width = mtwidth;
                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))
@@ -1809,8 +1872,26 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
 
                if (cls.state != ca_dedicated)
                {
-                       // LordHavoc: HL sky textures are entirely different than quake
-                       if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
+                       // did not find external texture via shader loading, load it from the bsp or wad3
+                       if (loadmodel->brush.ishlbsp)
+                       {
+                               // internal texture overrides wad
+                               unsigned char* pixels, * freepixels;
+                               pixels = freepixels = NULL;
+                               if (mtdata)
+                                       pixels = W_ConvertWAD3TextureBGRA(&miptexsb);
+                               if (pixels == NULL)
+                                       pixels = freepixels = W_GetTextureBGRA(tx->name);
+                               if (pixels != NULL)
+                               {
+                                       tx->width = image_width;
+                                       tx->height = image_height;
+                                       tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, pixels, image_width, image_height, image_width, image_height, CRC_Block(pixels, image_width * image_height * 4), true);
+                               }
+                               if (freepixels)
+                                       Mem_Free(freepixels);
+                       }
+                       else if (!strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
                        {
                                data = loadimagepixelsbgra(gamemode == GAME_TENEBRAE ? tx->name : va(vabuf, sizeof(vabuf), "textures/%s/%s", mapname, tx->name), false, false, false, NULL);
                                if (!data)
@@ -1823,52 +1904,21 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                                else if (mtdata != NULL)
                                        R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
                        }
-                       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);
-                               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)
-                                       tx->offsetmapping = OFFSETMAPPING_DEFAULT; // allow offsetmapping on external textures without a q3 shader
-                               if (!skinframe)
-                               {
-                                       // did not find external texture, load it from the bsp or wad3
-                                       if (loadmodel->brush.ishlbsp)
-                                       {
-                                               // internal texture overrides wad
-                                               unsigned char *pixels, *freepixels;
-                                               pixels = freepixels = NULL;
-                                               if (mtdata)
-                                                       pixels = W_ConvertWAD3TextureBGRA(&miptexsb);
-                                               if (pixels == NULL)
-                                                       pixels = freepixels = W_GetTextureBGRA(tx->name);
-                                               if (pixels != NULL)
-                                               {
-                                                       tx->width = image_width;
-                                                       tx->height = image_height;
-                                                       skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, pixels, image_width, image_height, true);
-                                               }
-                                               if (freepixels)
-                                                       Mem_Free(freepixels);
-                                       }
-                                       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)
-                                       tx->skinframes[0] = skinframe;
-                       }
-                       // LordHavoc: some Tenebrae textures get replaced by black
+                       else if (mtdata) // texture included
+                               tx->materialshaderpass->skinframes[0] = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height);
+                       // if mtdata is NULL, the "missing" texture has already been assigned to this
+                       // LadyHavoc: 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, 0, 0, 0, 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, 0, 0, 0, false);
+                       tx->currentskinframe = tx->materialshaderpass->skinframes[0];
                }
 
                tx->basematerialflags = MATERIALFLAG_WALL;
                if (tx->name[0] == '*')
                {
-                       // LordHavoc: some turbulent textures should not be affected by wateralpha
+                       // LadyHavoc: some turbulent textures should not be affected by wateralpha
                        if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
                                tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
                        else if (!strncmp(tx->name,"*lava",5)
@@ -1877,25 +1927,34 @@ 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
+               {
+                       tx->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
+               }
                else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
                {
                        // replace the texture with black
                        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
@@ -1961,6 +2020,12 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                if (incomplete)
                        continue;
 
+               // If we have exactly one frame, something's wrong.
+               if (max + altmax <= 1)
+               {
+                       Con_Printf("Texture %s is animated (leading +) but has only one frame\n", tx->name);
+               }
+
                if (altmax < 1)
                {
                        // if there is no alternate animation, duplicate the primary
@@ -1970,6 +2035,18 @@ static void Mod_Q1BSP_LoadTextures(sizebuf_t *sb)
                                altanims[k] = anims[k];
                }
 
+               if (max < 1)
+               {
+                       // Warn.
+                       Con_Printf("Missing frame 0 of %s\n", tx->name);
+
+                       // however, we can handle this by duplicating the alternate animation into the primary
+                       max = altmax;
+                       for (k = 0;k < 10;k++)
+                               anims[k] = altanims[k];
+               }
+
+
                // link together the primary animation
                for (j = 0;j < max;j++)
                {
@@ -2012,15 +2089,15 @@ static void Mod_Q1BSP_LoadLighting(sizebuf_t *sb)
        char litfilename[MAX_QPATH];
        char dlitfilename[MAX_QPATH];
        fs_offset_t filesize;
-       if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
+       if (loadmodel->brush.ishlbsp) // LadyHavoc: load the colored lighting data straight
        {
                loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize);
                for (i = 0;i < sb->cursize;i++)
                        loadmodel->brushq1.lightdata[i] = sb->data[i] >>= 1;
        }
-       else // LordHavoc: bsp version 29 (normal white lighting)
+       else // LadyHavoc: bsp version 29 (normal white lighting)
        {
-               // LordHavoc: hope is not lost yet, check for a .lit file to load
+               // LadyHavoc: hope is not lost yet, check for a .lit file to load
                strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
                FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
                strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
@@ -2073,7 +2150,7 @@ static void Mod_Q1BSP_LoadLighting(sizebuf_t *sb)
                                data = NULL;
                        }
                }
-               // LordHavoc: oh well, expand the white lighting data
+               // LadyHavoc: oh well, expand the white lighting data
                if (!sb->cursize)
                        return;
                loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize*3);
@@ -2495,7 +2572,7 @@ static void Mod_Q1BSP_LoadFaces(sizebuf_t *sb)
                totaltris += numedges - 2;
        }
 
-       Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
+       Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false);
 
        lightmaptexture = NULL;
        deluxemaptexture = r_texture_blanknormalmap;
@@ -2615,9 +2692,9 @@ static void Mod_Q1BSP_LoadFaces(sizebuf_t *sb)
                        }
 #endif
                }
-               else if (loadmodel->brush.ishlbsp || loadmodel->brush.isq2bsp) // LordHavoc: HalfLife map (bsp version 30)
+               else if (loadmodel->brush.ishlbsp || loadmodel->brush.isq2bsp) // LadyHavoc: HalfLife map (bsp version 30)
                        surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + lightmapoffset;
-               else // LordHavoc: white lighting (bsp version 29)
+               else // LadyHavoc: white lighting (bsp version 29)
                {
                        surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (lightmapoffset * 3);
                        if (loadmodel->brushq1.nmaplightdata)
@@ -2663,10 +2740,10 @@ 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])
@@ -2710,7 +2787,7 @@ static void Mod_Q1BSP_LoadFaces(sizebuf_t *sb)
                                v = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
                                (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
                                (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
-                               // LordHavoc: calc lightmap data offset for vertex lighting to use
+                               // LadyHavoc: calc lightmap data offset for vertex lighting to use
                                iu = (int) u;
                                iv = (int) v;
                                (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
@@ -2848,7 +2925,7 @@ static void Mod_Q1BSP_LoadNodes(sizebuf_t *sb)
 
                for (j=0 ; j<2 ; j++)
                {
-                       // LordHavoc: this code supports broken bsp files produced by
+                       // LadyHavoc: this code supports broken bsp files produced by
                        // arguire qbsp which can produce more than 32768 nodes, any value
                        // below count is assumed to be a node number, any other value is
                        // assumed to be a leaf number
@@ -3045,7 +3122,7 @@ static void Mod_Q1BSP_LoadClipnodes(sizebuf_t *sb, hullinfo_t *hullinfo)
                }
                else
                {
-                       // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
+                       // LadyHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
                        out->children[0] = (unsigned short)MSG_ReadLittleShort(sb);
                        out->children[1] = (unsigned short)MSG_ReadLittleShort(sb);
                        if (out->children[0] >= count)
@@ -3151,6 +3228,26 @@ 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
@@ -3552,12 +3649,12 @@ static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
 
        if (nodeportal->numpoints < 3)
        {
-               Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
+               Con_Warn("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
                nodeportal->numpoints = 0;
        }
        else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
        {
-               Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
+               Con_Warn("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
                nodeportal->numpoints = 0;
        }
 
@@ -3740,32 +3837,7 @@ static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins,
        VectorAdd(inmins, hull->clip_size, outmaxs);
 }
 
-static int Mod_Q1BSP_CreateShadowMesh(dp_model_t *mod)
-{
-       int j;
-       int numshadowmeshtriangles = 0;
-       msurface_t *surface;
-       if (cls.state == ca_dedicated)
-               return 0;
-       // make a single combined shadow mesh to allow optimized shadow volume creation
-
-       for (j = 0, surface = mod->data_surfaces;j < mod->num_surfaces;j++, surface++)
-       {
-               surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
-               numshadowmeshtriangles += surface->num_triangles;
-       }
-       mod->brush.shadowmesh = Mod_ShadowMesh_Begin(mod->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
-       for (j = 0, surface = mod->data_surfaces;j < mod->num_surfaces;j++, surface++)
-               if (surface->num_triangles > 0)
-                       Mod_ShadowMesh_AddMesh(mod->mempool, mod->brush.shadowmesh, NULL, NULL, NULL, mod->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (mod->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
-       mod->brush.shadowmesh = Mod_ShadowMesh_Finish(mod->mempool, mod->brush.shadowmesh, false, r_enableshadowvolumes.integer != 0, false);
-       if (mod->brush.shadowmesh && mod->brush.shadowmesh->neighbor3i)
-               Mod_BuildTriangleNeighbors(mod->brush.shadowmesh->neighbor3i, mod->brush.shadowmesh->element3i, mod->brush.shadowmesh->numtriangles);
-
-       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)
 {
@@ -3874,8 +3946,6 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->GetLightInfo = R_Q1BSP_GetLightInfo;
        mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
        mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
-       mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
-       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
        mod->DrawLight = R_Q1BSP_DrawLight;
 
 // load into heap
@@ -3931,13 +4001,10 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->numframes = 2;             // regular and alternate animation
        mod->numskins = 1;
 
-       // make a single combined shadow mesh to allow optimized shadow volume creation
-       Mod_Q1BSP_CreateShadowMesh(loadmodel);
-
        if (loadmodel->brush.numsubmodels)
                loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
 
-       // LordHavoc: to clear the fog around the original quake submodel code, I
+       // LadyHavoc: to clear the fog around the original quake submodel code, I
        // will explain:
        // first of all, some background info on the submodels:
        // model 0 is the map model (the world, named maps/e1m1.bsp for example)
@@ -3948,7 +4015,7 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        // the number i), at the end of the loop it duplicates the model to become
        // the next submodel, and loops back to set up the new submodel.
 
-       // LordHavoc: now the explanation of my sane way (which works identically):
+       // LadyHavoc: now the explanation of my sane way (which works identically):
        // set up the world model, then on each submodel copy from the world model
        // and set up the submodel with the respective model info.
        totalstylesurfaces = 0;
@@ -3972,7 +4039,7 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
        for (i = 0;i < mod->brush.numsubmodels;i++)
        {
-               // LordHavoc: this code was originally at the end of this loop, but
+               // LadyHavoc: this code was originally at the end of this loop, but
                // has been transformed to something more readable at the start here.
 
                if (i > 0)
@@ -4019,6 +4086,9 @@ 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);
@@ -4058,7 +4128,7 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                                mod->DrawSky = R_Q1BSP_DrawSky;
 
                        for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
-                               if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
+                               if (surface->texture && surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
                                        break;
                        if (j < mod->nummodelsurfaces)
                                mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
@@ -4103,8 +4173,8 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                }
                else
                {
-                       // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
-                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
+                       // LadyHavoc: empty submodel(lacrima.bsp has such a glitch)
+                       Con_Warnf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
                }
                //mod->brushq1.num_visleafs = bm->visleafs;
 
@@ -4133,7 +4203,7 @@ void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        Con_DPrintf("Stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
 }
 
-int Mod_Q2BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
+int Mod_Q2BSP_SuperContentsFromNativeContents(int nativecontents)
 {
        int supercontents = 0;
        if (nativecontents & CONTENTSQ2_SOLID)
@@ -4157,7 +4227,7 @@ int Mod_Q2BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativeconte
        return supercontents;
 }
 
-int Mod_Q2BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
+int Mod_Q2BSP_NativeContentsFromSuperContents(int supercontents)
 {
        int nativecontents = 0;
        if (supercontents & SUPERCONTENTS_SOLID)
@@ -4281,7 +4351,7 @@ 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];
@@ -4297,6 +4367,7 @@ 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);
@@ -4310,7 +4381,9 @@ 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)
@@ -4321,19 +4394,24 @@ 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(loadmodel->mempool, loadmodel->name, tx, filename, true, true, TEXF_ALPHA | TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
                                // 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)
@@ -4348,7 +4426,7 @@ 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;
                                }
@@ -4366,7 +4444,7 @@ 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;
@@ -4374,16 +4452,29 @@ 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)
                                {
-                                       tx->tcmods[0].tcmod = Q3TCMOD_SCROLL;
-                                       tx->tcmods[0].parms[0] = -1.6f;
-                                       tx->tcmods[0].parms[1] = 0.0f;
+                                       // 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)
                                {
@@ -4395,10 +4486,10 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
                                        tx->q2contents |= Q2CONTENTS_SOLID;
                                if (tx->q2flags & (Q2SURF_HINT | Q2SURF_SKIP))
                                        tx->q2contents = 0;
-                               tx->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(loadmodel, tx->q2contents);
+                               tx->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(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;
@@ -4420,7 +4511,7 @@ 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
 
@@ -4464,7 +4555,7 @@ static void Mod_Q2BSP_LoadTexinfo(sizebuf_t *sb)
 
 static void Mod_Q2BSP_LoadLighting(sizebuf_t *sb)
 {
-       // LordHavoc: this fits exactly the same format that we use in .lit files
+       // LadyHavoc: this fits exactly the same format that we use in .lit files
        loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, sb->cursize);
        MSG_ReadBytes(sb, sb->cursize, loadmodel->brushq1.lightdata);
 }
@@ -4596,6 +4687,9 @@ 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);
@@ -4608,7 +4702,7 @@ 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);
@@ -4618,11 +4712,49 @@ 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);
+               supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(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)
                {
@@ -4631,7 +4763,6 @@ 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);
@@ -4639,10 +4770,7 @@ 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)
@@ -4650,6 +4778,8 @@ 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)
@@ -4794,8 +4924,6 @@ static void Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->GetLightInfo = R_Q1BSP_GetLightInfo;
        mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
        mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
-       mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
-       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
        mod->DrawLight = R_Q1BSP_DrawLight;
 
 // load into heap
@@ -4856,9 +4984,6 @@ static void Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->numframes = 0;             // q2bsp animations are kind of special, frame is unbounded...
        mod->numskins = 1;
 
-       // make a single combined shadow mesh to allow optimized shadow volume creation
-       Mod_Q1BSP_CreateShadowMesh(loadmodel);
-
        if (loadmodel->brush.numsubmodels)
                loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
 
@@ -5025,7 +5150,7 @@ static void Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                }
                else
                {
-                       Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
+                       Con_Warnf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
                }
                //mod->brushq1.num_visleafs = bm->visleafs;
 
@@ -5044,8 +5169,8 @@ static void Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        Con_DPrintf("Stats for q2bsp model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
 }
 
-static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
-static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
+static int Mod_Q3BSP_SuperContentsFromNativeContents(int nativecontents);
+static int Mod_Q3BSP_NativeContentsFromSuperContents(int supercontents);
 
 static void Mod_Q3BSP_LoadEntities(lump_t *l)
 {
@@ -5133,11 +5258,11 @@ static void Mod_Q3BSP_LoadTextures(lump_t *l)
        for (i = 0;i < count;i++)
        {
                out[i].surfaceflags = LittleLong(in[i].surfaceflags);
-               out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
-               Mod_LoadTextureFromQ3Shader(out + i, in[i].name, true, true, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS);
+               out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(LittleLong(in[i].contents));
+               Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, out + i, in[i].name, true, true, TEXF_MIPMAP | TEXF_ISWORLD | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
                // restore the surfaceflags and supercontents
                out[i].surfaceflags = LittleLong(in[i].surfaceflags);
-               out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
+               out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(LittleLong(in[i].contents));
        }
 }
 
@@ -5622,10 +5747,6 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
        if (loadmodel->brushq3.deluxemapping)
                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)
-               loadmodel->texturepool = R_AllocTexturePool();
-
        mergedpixels = (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4);
        mergeddeluxepixels = loadmodel->brushq3.deluxemapping ? (unsigned char *) Mem_Alloc(tempmempool, mergedwidth * mergedheight * 4) : NULL;
        for (i = 0;i < count;i++)
@@ -5689,53 +5810,6 @@ static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
        }
 }
 
-static void Mod_Q3BSP_BuildBBoxes(const int *element3i, int num_triangles, const float *vertex3f, float **collisionbbox6f, int *collisionstride, int stride)
-{
-       int j, k, cnt, tri;
-       float *mins, *maxs;
-       const float *vert;
-       *collisionstride = stride;
-       if(stride > 0)
-       {
-               cnt = (num_triangles + stride - 1) / stride;
-               *collisionbbox6f = (float *) Mem_Alloc(loadmodel->mempool, sizeof(float[6]) * cnt);
-               for(j = 0; j < cnt; ++j)
-               {
-                       mins = &((*collisionbbox6f)[6 * j + 0]);
-                       maxs = &((*collisionbbox6f)[6 * j + 3]);
-                       for(k = 0; k < stride; ++k)
-                       {
-                               tri = j * stride + k;
-                               if(tri >= num_triangles)
-                                       break;
-                               vert = &(vertex3f[element3i[3 * tri + 0] * 3]);
-                               if(!k || vert[0] < mins[0]) mins[0] = vert[0];
-                               if(!k || vert[1] < mins[1]) mins[1] = vert[1];
-                               if(!k || vert[2] < mins[2]) mins[2] = vert[2];
-                               if(!k || vert[0] > maxs[0]) maxs[0] = vert[0];
-                               if(!k || vert[1] > maxs[1]) maxs[1] = vert[1];
-                               if(!k || vert[2] > maxs[2]) maxs[2] = vert[2];
-                               vert = &(vertex3f[element3i[3 * tri + 1] * 3]);
-                               if(vert[0] < mins[0]) mins[0] = vert[0];
-                               if(vert[1] < mins[1]) mins[1] = vert[1];
-                               if(vert[2] < mins[2]) mins[2] = vert[2];
-                               if(vert[0] > maxs[0]) maxs[0] = vert[0];
-                               if(vert[1] > maxs[1]) maxs[1] = vert[1];
-                               if(vert[2] > maxs[2]) maxs[2] = vert[2];
-                               vert = &(vertex3f[element3i[3 * tri + 2] * 3]);
-                               if(vert[0] < mins[0]) mins[0] = vert[0];
-                               if(vert[1] < mins[1]) mins[1] = vert[1];
-                               if(vert[2] < mins[2]) mins[2] = vert[2];
-                               if(vert[0] > maxs[0]) maxs[0] = vert[0];
-                               if(vert[1] > maxs[1]) maxs[1] = vert[1];
-                               if(vert[2] > maxs[2]) maxs[2] = vert[2];
-                       }
-               }
-       }
-       else
-               *collisionbbox6f = NULL;
-}
-
 typedef struct patchtess_s
 {
        patchinfo_t info;
@@ -5763,7 +5837,6 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, collisionvertices, collisiontriangles, numvertices, numtriangles, cxtess, cytess;
        float lightmaptcbase[2], lightmaptcscale[2];
        //int *originalelement3i;
-       //int *originalneighbor3i;
        float *originalvertex3f;
        //float *originalsvector3f;
        //float *originaltvector3f;
@@ -5983,7 +6056,7 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
        i = oldi;
        in = oldin;
        out = oldout;
-       Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
+       Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true);
        if (collisiontriangles)
        {
                loadmodel->brush.data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, collisionvertices * sizeof(float[3]));
@@ -6050,7 +6123,7 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                }
                        if(xtess == -1)
                        {
-                               Con_Printf("ERROR: patch %d isn't preprocessed?!?\n", i);
+                               Con_Errorf("ERROR: patch %d isn't preprocessed?!?\n", i);
                                xtess = ytess = cxtess = cytess = 0;
                        }
 
@@ -6084,42 +6157,15 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                        finalvertices = finalwidth * finalheight;
                        oldnumtriangles2 = finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
 
-                       // legacy collision geometry implementation
-                       out->deprecatedq3data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
-                       out->deprecatedq3data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
+                       // store collision geometry for BIH collision tree
                        out->num_collisionvertices = finalvertices;
                        out->num_collisiontriangles = finaltriangles;
-                       Q3PatchTesselateFloat(3, sizeof(float[3]), out->deprecatedq3data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
-                       Q3PatchTriangleElements(out->deprecatedq3data_collisionelement3i, finalwidth, finalheight, 0);
-
-                       //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
-                       Mod_SnapVertices(3, finalvertices, out->deprecatedq3data_collisionvertex3f, 1);
-
-                       out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(finaltriangles, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionvertex3f);
-
-                       // now optimize the collision mesh by finding triangle bboxes...
-                       Mod_Q3BSP_BuildBBoxes(out->deprecatedq3data_collisionelement3i, out->num_collisiontriangles, out->deprecatedq3data_collisionvertex3f, &out->deprecatedq3data_collisionbbox6f, &out->deprecatedq3num_collisionbboxstride, mod_q3bsp_curves_collisions_stride.integer);
-                       Mod_Q3BSP_BuildBBoxes(loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle, out->num_triangles, loadmodel->surfmesh.data_vertex3f, &out->deprecatedq3data_bbox6f, &out->deprecatedq3num_bboxstride, mod_q3bsp_curves_stride.integer);
-
-                       // store collision geometry for BIH collision tree
                        surfacecollisionvertex3f = loadmodel->brush.data_collisionvertex3f + collisionvertices * 3;
                        surfacecollisionelement3i = loadmodel->brush.data_collisionelement3i + collisiontriangles * 3;
                        Q3PatchTesselateFloat(3, sizeof(float[3]), surfacecollisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
                        Q3PatchTriangleElements(surfacecollisionelement3i, finalwidth, finalheight, collisionvertices);
                        Mod_SnapVertices(3, finalvertices, surfacecollisionvertex3f, 1);
-#if 1
-                       // remove this once the legacy code is removed
-                       {
-                               int nc = out->num_collisiontriangles;
-#endif
                        out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(finaltriangles, surfacecollisionelement3i, surfacecollisionelement3i, loadmodel->brush.data_collisionvertex3f);
-#if 1
-                               if(nc != out->num_collisiontriangles)
-                               {
-                                       Con_Printf("number of collision triangles differs between BIH and BSP. FAIL.\n");
-                               }
-                       }
-#endif
 
                        if (developer_extra.integer)
                                Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
@@ -6137,7 +6183,7 @@ static void Mod_Q3BSP_LoadFaces(lump_t *l)
                                invalidelements++;
                if (invalidelements)
                {
-                       Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
+                       Con_Warnf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
                        for (j = 0;j < out->num_triangles * 3;j++)
                        {
                                Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
@@ -6426,6 +6472,9 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        q3dlightgrid_t *out;
        int count;
        int i;
+       int texturesize[3];
+       unsigned char *texturergba, *texturelayer[3], *texturepadding[2];
+       double lightgridmatrix[4][4];
 
        in = (q3dlightgrid_t *)(mod_base + l->fileofs);
        if (l->filelen % sizeof(*in))
@@ -6451,11 +6500,11 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
        {
                if (l->filelen < count * (int)sizeof(*in))
                {
-                       Con_Printf("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_isize[0], loadmodel->brushq3.num_lightgrid_isize[1], loadmodel->brushq3.num_lightgrid_isize[2]);
+                       Con_Errorf("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_isize[0], loadmodel->brushq3.num_lightgrid_isize[1], loadmodel->brushq3.num_lightgrid_isize[2]);
                        return; // ignore the grid if we cannot understand it
                }
                if (l->filelen != count * (int)sizeof(*in))
-                       Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
+                       Con_Warnf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
                out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
                loadmodel->brushq3.data_lightgrid = out;
                loadmodel->brushq3.num_lightgrid = count;
@@ -6500,6 +6549,82 @@ static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
                                // all is good
                        }
                }
+
+               if (mod_q3bsp_lightgrid_texture.integer)
+               {
+                       // build a texture to hold the data for per-pixel sampling
+                       // this has 3 different kinds of data stacked in it:
+                       // ambient color
+                       // bent-normal light color
+                       // bent-normal light dir
+
+                       texturesize[0] = loadmodel->brushq3.num_lightgrid_isize[0];
+                       texturesize[1] = loadmodel->brushq3.num_lightgrid_isize[1];
+                       texturesize[2] = (loadmodel->brushq3.num_lightgrid_isize[2] + 2) * 3;
+                       texturergba = (unsigned char*)Mem_Alloc(loadmodel->mempool, texturesize[0] * texturesize[1] * texturesize[2] * sizeof(char[4]));
+                       texturelayer[0] = texturergba + loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * 4;
+                       texturelayer[1] = texturelayer[0] + (loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * (loadmodel->brushq3.num_lightgrid_isize[2] + 2)) * 4;
+                       texturelayer[2] = texturelayer[1] + (loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * (loadmodel->brushq3.num_lightgrid_isize[2] + 2)) * 4;
+                       // the light dir layer needs padding above/below it that is a neutral unsigned normal (127,127,127,255)
+                       texturepadding[0] = texturelayer[2] - loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * 4;
+                       texturepadding[1] = texturelayer[2] + loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2] * 4;
+                       for (i = 0; i < texturesize[0] * texturesize[1]; i++)
+                       {
+                               texturepadding[0][i * 4] = texturepadding[1][i * 4] = 127;
+                               texturepadding[0][i * 4 + 1] = texturepadding[1][i * 4 + 1] = 127;
+                               texturepadding[0][i * 4 + 2] = texturepadding[1][i * 4 + 2] = 127;
+                               texturepadding[0][i * 4 + 3] = texturepadding[1][i * 4 + 3] = 255;
+                       }
+                       for (i = 0; i < count; i++)
+                       {
+                               texturelayer[0][i * 4 + 0] = out[i].ambientrgb[0];
+                               texturelayer[0][i * 4 + 1] = out[i].ambientrgb[1];
+                               texturelayer[0][i * 4 + 2] = out[i].ambientrgb[2];
+                               texturelayer[0][i * 4 + 3] = 255;
+                               texturelayer[1][i * 4 + 0] = out[i].diffusergb[0];
+                               texturelayer[1][i * 4 + 1] = out[i].diffusergb[1];
+                               texturelayer[1][i * 4 + 2] = out[i].diffusergb[2];
+                               texturelayer[1][i * 4 + 3] = 255;
+                               // this uses the mod_md3_sin table because the values are
+                               // already in the 0-255 range, the 64+ bias fetches a cosine
+                               // instead of a sine value
+                               texturelayer[2][i * 4 + 0] = (char)((mod_md3_sin[64 + out[i].diffuseyaw] * mod_md3_sin[out[i].diffusepitch]) * 127 + 127);
+                               texturelayer[2][i * 4 + 1] = (char)((mod_md3_sin[out[i].diffuseyaw] * mod_md3_sin[out[i].diffusepitch]) * 127 + 127);
+                               texturelayer[2][i * 4 + 2] = (char)((mod_md3_sin[64 + out[i].diffusepitch]) * 127 + 127);
+                               texturelayer[2][i * 4 + 3] = 255;
+                       }
+#if 0
+                       // debugging hack
+                       int x, y, z;
+                       for (z = 0; z < loadmodel->brushq3.num_lightgrid_isize[2]; z++)
+                       {
+                               for (y = 0; y < loadmodel->brushq3.num_lightgrid_isize[1]; y++)
+                               {
+                                       for (x = 0; x < loadmodel->brushq3.num_lightgrid_isize[0]; x++)
+                                       {
+                                               i = (z * texturesize[1] + y) * texturesize[0] + x;
+                                               texturelayer[0][i * 4 + 0] = x * 256 / loadmodel->brushq3.num_lightgrid_isize[0];
+                                               texturelayer[0][i * 4 + 1] = y * 256 / loadmodel->brushq3.num_lightgrid_isize[1];
+                                               texturelayer[0][i * 4 + 2] = z * 256 / loadmodel->brushq3.num_lightgrid_isize[2];
+                                       }
+                               }
+                       }
+#endif
+                       loadmodel->brushq3.lightgridtexturesize[0] = texturesize[0];
+                       loadmodel->brushq3.lightgridtexturesize[1] = texturesize[1];
+                       loadmodel->brushq3.lightgridtexturesize[2] = texturesize[2];
+                       memset(lightgridmatrix[0], 0, sizeof(lightgridmatrix));
+                       lightgridmatrix[0][0] = loadmodel->brushq3.num_lightgrid_scale[0] / texturesize[0];
+                       lightgridmatrix[1][1] = loadmodel->brushq3.num_lightgrid_scale[1] / texturesize[1];
+                       lightgridmatrix[2][2] = loadmodel->brushq3.num_lightgrid_scale[2] / texturesize[2];
+                       lightgridmatrix[0][3] = -(loadmodel->brushq3.num_lightgrid_imins[0] - 0.5f) / texturesize[0];
+                       lightgridmatrix[1][3] = -(loadmodel->brushq3.num_lightgrid_imins[1] - 0.5f) / texturesize[1];
+                       lightgridmatrix[2][3] = -(loadmodel->brushq3.num_lightgrid_imins[2] - 1.5f) / texturesize[2];
+                       lightgridmatrix[3][3] = 1;
+                       Matrix4x4_FromArrayDoubleD3D(&loadmodel->brushq3.lightgridworldtotexturematrix, lightgridmatrix[0]);
+                       loadmodel->brushq3.lightgridtexture = R_LoadTexture3D(loadmodel->texturepool, "lightgrid", texturesize[0], texturesize[1], texturesize[2], texturergba, TEXTYPE_RGBA, TEXF_CLAMP, 0, NULL);
+                       Mem_Free(texturergba);
+               }
        }
 }
 
@@ -6548,23 +6673,9 @@ static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambie
        q3dlightgrid_t *a, *s;
 
        // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
-       switch(vid.renderpath)
-       {
-       case RENDERPATH_GL20:
-       case RENDERPATH_D3D9:
-       case RENDERPATH_D3D10:
-       case RENDERPATH_D3D11:
-       case RENDERPATH_SOFT:
-       case RENDERPATH_GLES2:
-               // LordHavoc: FIXME: is this true?
-               stylescale = 1; // added while render
-               break;
-       case RENDERPATH_GL11:
-       case RENDERPATH_GL13:
-       case RENDERPATH_GLES1:
-               stylescale = r_refdef.scene.rtlightstylevalue[0];
-               break;
-       }
+       // LadyHavoc: FIXME: is this true?
+       stylescale = 1; // added while render
+       //stylescale = r_refdef.scene.rtlightstylevalue[0];
 
        if (!model->brushq3.num_lightgrid)
        {
@@ -6622,7 +6733,7 @@ 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];
@@ -6672,35 +6783,38 @@ 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;
@@ -6714,6 +6828,8 @@ 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)
@@ -6764,7 +6880,7 @@ 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;
@@ -6780,7 +6896,7 @@ 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;
        }
 
@@ -6789,6 +6905,8 @@ 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];
@@ -6810,7 +6928,7 @@ 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)
                {
@@ -6820,6 +6938,8 @@ 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;
@@ -6887,17 +7007,17 @@ 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;
@@ -6913,9 +7033,9 @@ 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;
        }
 
@@ -6928,6 +7048,8 @@ 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);
@@ -7040,7 +7162,7 @@ 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;
@@ -7052,25 +7174,25 @@ 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
@@ -7081,12 +7203,16 @@ 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
 }
@@ -7100,382 +7226,19 @@ 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;
 #endif
 }
 
-static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
-{
-       int i;
-       mleaf_t *leaf;
-       colbrushf_t *brush;
-       // find which leaf the point is in
-       while (node->plane)
-               node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
-       // point trace the brushes
-       leaf = (mleaf_t *)node;
-       for (i = 0;i < leaf->numleafbrushes;i++)
-       {
-               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
-               if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
-               {
-                       brush->markframe = markframe;
-                       Collision_TracePointBrushFloat(trace, point, brush);
-               }
-       }
-       // can't do point traces on curves (they have no thickness)
-}
-
-static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
-{
-       int i, startside, endside;
-       float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
-       mleaf_t *leaf;
-       msurface_t *surface;
-       mplane_t *plane;
-       colbrushf_t *brush;
-       // walk the tree until we hit a leaf, recursing for any split cases
-       while (node->plane)
-       {
-#if 0
-               if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
-                       return;
-               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[0], start, end, startfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
-               node = node->children[1];
-#else
-               // abort if this part of the bsp tree can not be hit by this trace
-//             if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
-//                     return;
-               plane = node->plane;
-               // axial planes are much more common than non-axial, so an optimized
-               // axial case pays off here
-               if (plane->type < 3)
-               {
-                       dist1 = start[plane->type] - plane->dist;
-                       dist2 = end[plane->type] - plane->dist;
-               }
-               else
-               {
-                       dist1 = DotProduct(start, plane->normal) - plane->dist;
-                       dist2 = DotProduct(end, plane->normal) - plane->dist;
-               }
-               startside = dist1 < 0;
-               endside = dist2 < 0;
-               if (startside == endside)
-               {
-                       // most of the time the line fragment is on one side of the plane
-                       node = node->children[startside];
-               }
-               else
-               {
-                       // line crosses node plane, split the line
-                       dist1 = PlaneDiff(linestart, plane);
-                       dist2 = PlaneDiff(lineend, plane);
-                       midfrac = dist1 / (dist1 - dist2);
-                       VectorLerp(linestart, midfrac, lineend, mid);
-                       // take the near side first
-                       Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
-                       // if we found an impact on the front side, don't waste time
-                       // exploring the far side
-                       if (midfrac <= trace->fraction)
-                               Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
-                       return;
-               }
-#endif
-       }
-       // abort if this part of the bsp tree can not be hit by this trace
-//     if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
-//             return;
-       // hit a leaf
-       nodesegmentmins[0] = min(start[0], end[0]) - 1;
-       nodesegmentmins[1] = min(start[1], end[1]) - 1;
-       nodesegmentmins[2] = min(start[2], end[2]) - 1;
-       nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
-       nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
-       nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
-       // line trace the brushes
-       leaf = (mleaf_t *)node;
-#if 0
-       if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
-               return;
-#endif
-       for (i = 0;i < leaf->numleafbrushes;i++)
-       {
-               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
-               if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
-               {
-                       brush->markframe = markframe;
-                       Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
-               }
-       }
-       // can't do point traces on curves (they have no thickness)
-       if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
-       {
-               // line trace the curves
-               for (i = 0;i < leaf->numleafsurfaces;i++)
-               {
-                       surface = model->data_surfaces + leaf->firstleafsurface[i];
-                       if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
-                       {
-                               surface->deprecatedq3collisionmarkframe = markframe;
-                               Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
-                       }
-               }
-       }
-}
-
-static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
+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)
 {
-       int i;
-       int sides;
-       mleaf_t *leaf;
-       colbrushf_t *brush;
-       msurface_t *surface;
-       mplane_t *plane;
-       float nodesegmentmins[3], nodesegmentmaxs[3];
-       // walk the tree until we hit a leaf, recursing for any split cases
-       while (node->plane)
-       {
-#if 0
-               if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
-                       return;
-               Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
-               node = node->children[1];
-#else
-               // abort if this part of the bsp tree can not be hit by this trace
-//             if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
-//                     return;
-               plane = node->plane;
-               // axial planes are much more common than non-axial, so an optimized
-               // axial case pays off here
-               if (plane->type < 3)
-               {
-                       // this is an axial plane, compare bounding box directly to it and
-                       // recurse sides accordingly
-                       // recurse down node sides
-                       // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
-                       //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
-                       //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
-                       sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
-               }
-               else
-               {
-                       // this is a non-axial plane, so check if the start and end boxes
-                       // are both on one side of the plane to handle 'diagonal' cases
-                       sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
-               }
-               if (sides == 3)
-               {
-                       // segment crosses plane
-                       Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
-                       sides = 2;
-               }
-               // if sides == 0 then the trace itself is bogus (Not A Number values),
-               // in this case we simply pretend the trace hit nothing
-               if (sides == 0)
-                       return; // ERROR: NAN bounding box!
-               // take whichever side the segment box is on
-               node = node->children[sides - 1];
-#endif
-       }
-       // abort if this part of the bsp tree can not be hit by this trace
-//     if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
-//             return;
-       nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
-       nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
-       nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
-       nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
-       nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
-       nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
-       // hit a leaf
-       leaf = (mleaf_t *)node;
-#if 0
-       if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
-               return;
-#endif
-       for (i = 0;i < leaf->numleafbrushes;i++)
-       {
-               brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
-               if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
-               {
-                       brush->markframe = markframe;
-                       Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
-               }
-       }
-       if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
-       {
-               for (i = 0;i < leaf->numleafsurfaces;i++)
-               {
-                       surface = model->data_surfaces + leaf->firstleafsurface[i];
-                       if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
-                       {
-                               surface->deprecatedq3collisionmarkframe = markframe;
-                               Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
-                       }
-               }
-       }
-}
-
-
-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)
-{
-       int i;
-       q3mbrush_t *brush;
-       memset(trace, 0, sizeof(*trace));
-       trace->fraction = 1;
-       trace->hitsupercontentsmask = hitsupercontentsmask;
-       if (mod_collision_bih.integer)
-               Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
-       else if (model->brush.submodel)
-       {
-               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
-                       if (brush->colbrushf)
-                               Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
-       }
-       else
-               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)
-{
-       int i;
-       float segmentmins[3], segmentmaxs[3];
-       msurface_t *surface;
-       q3mbrush_t *brush;
-
-       if (VectorCompare(start, end))
-       {
-               Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
-               return;
-       }
-
-       memset(trace, 0, sizeof(*trace));
-       trace->fraction = 1;
-       trace->hitsupercontentsmask = hitsupercontentsmask;
-       segmentmins[0] = min(start[0], end[0]) - 1;
-       segmentmins[1] = min(start[1], end[1]) - 1;
-       segmentmins[2] = min(start[2], end[2]) - 1;
-       segmentmaxs[0] = max(start[0], end[0]) + 1;
-       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);
-       else if (model->brush.submodel)
-       {
-               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
-                       if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
-                               Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
-               if (mod_q3bsp_curves_collisions.integer)
-                       for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
-                               if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
-                                       Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
-       }
-       else
-               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)
-{
-       float segmentmins[3], segmentmaxs[3];
-       int i;
-       msurface_t *surface;
-       q3mbrush_t *brush;
-
-       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);
-               else
-                       Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, start->mins, end->mins, hitsupercontentsmask);
-               return;
-       }
-
-       // box trace, performed as brush trace
-       memset(trace, 0, sizeof(*trace));
-       trace->fraction = 1;
-       trace->hitsupercontentsmask = hitsupercontentsmask;
-       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;
-       segmentmaxs[0] = max(start->maxs[0], end->maxs[0]) + 1;
-       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);
-       else if (model->brush.submodel)
-       {
-               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
-                       if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
-                               Collision_TraceBrushBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
-               if (mod_q3bsp_curves_collisions.integer)
-                       for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
-                               if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
-                                       Collision_TraceBrushTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
-       }
-       else
-               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)
-{
-       colboxbrushf_t thisbrush_start, thisbrush_end;
-       vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
-
-       // box trace, performed as brush trace
-       VectorAdd(start, boxmins, boxstartmins);
-       VectorAdd(start, boxmaxs, boxstartmaxs);
-       VectorAdd(end, boxmins, boxendmins);
-       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);
-}
-
-static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
-{
-       int i;
-       int supercontents = 0;
-       q3mbrush_t *brush;
-       if (mod_collision_bih.integer)
-       {
-               supercontents = Mod_CollisionBIH_PointSuperContents(model, frame, point);
-       }
-       // test if the point is inside each brush
-       else if (model->brush.submodel)
-       {
-               // submodels are effectively one leaf
-               for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
-                       if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
-                               supercontents |= brush->colbrushf->supercontents;
-       }
-       else
-       {
-               mnode_t *node = model->brush.data_nodes;
-               mleaf_t *leaf;
-               // find which leaf the point is in
-               while (node->plane)
-                       node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
-               leaf = (mleaf_t *)node;
-               // now check the brushes in the leaf
-               for (i = 0;i < leaf->numleafbrushes;i++)
-               {
-                       brush = model->brush.data_brushes + leaf->firstleafbrush[i];
-                       if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
-                               supercontents |= brush->colbrushf->supercontents;
-               }
-       }
-       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)
-{
-       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);
 }
 
 
@@ -7614,7 +7377,7 @@ bih_t *Mod_MakeCollisionBIH(dp_model_t *model, qboolean userendersurfaces, bih_t
        return out;
 }
 
-static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
+static int Mod_Q3BSP_SuperContentsFromNativeContents(int nativecontents)
 {
        int supercontents = 0;
        if (nativecontents & CONTENTSQ3_SOLID)
@@ -7644,7 +7407,7 @@ static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nati
        return supercontents;
 }
 
-static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
+static int Mod_Q3BSP_NativeContentsFromSuperContents(int supercontents)
 {
        int nativecontents = 0;
        if (supercontents & SUPERCONTENTS_SOLID)
@@ -7701,6 +7464,7 @@ static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->brush.isbsp2 = false;
        mod->brush.isq2bsp = false;
        mod->brush.isq3bsp = true;
+       mod->brush.skymasking = true;
        mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
        mod->numskins = 1;
 
@@ -7713,11 +7477,11 @@ static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
 
        mod->soundfromcenter = true;
-       mod->TraceBox = Mod_Q3BSP_TraceBox;
-       mod->TraceBrush = Mod_Q3BSP_TraceBrush;
-       mod->TraceLine = Mod_Q3BSP_TraceLine;
-       mod->TracePoint = Mod_Q3BSP_TracePoint;
-       mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
+       mod->TraceBox = Mod_CollisionBIH_TraceBox;
+       mod->TraceBrush = Mod_CollisionBIH_TraceBrush;
+       mod->TraceLine = Mod_CollisionBIH_TraceLine;
+       mod->TracePoint = Mod_CollisionBIH_TracePoint;
+       mod->PointSuperContents = Mod_CollisionBIH_PointSuperContents;
        mod->TraceLineAgainstSurfaces = Mod_CollisionBIH_TraceLine;
        mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
        mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
@@ -7740,8 +7504,6 @@ static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        mod->GetLightInfo = R_Q1BSP_GetLightInfo;
        mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
        mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
-       mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
-       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
        mod->DrawLight = R_Q1BSP_DrawLight;
 
        mod_base = (unsigned char *)header;
@@ -7787,6 +7549,10 @@ static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
                CL_KeepaliveMessage(false);
        }
 
+       // allocate a texture pool if we need it
+       if (mod->texturepool == NULL)
+               mod->texturepool = R_AllocTexturePool();
+
        Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
        Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
        Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
@@ -7816,9 +7582,6 @@ static void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
        // FIXME: shader alpha should replace r_wateralpha support in q3bsp
        loadmodel->brush.supportwateralpha = true;
 
-       // make a single combined shadow mesh to allow optimized shadow volume creation
-       Mod_Q1BSP_CreateShadowMesh(loadmodel);
-
        loadmodel->brush.num_leafs = 0;
        Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
 
@@ -8005,9 +7768,9 @@ 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];
@@ -8021,7 +7784,7 @@ 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));
@@ -8061,8 +7824,6 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
        loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
        loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
-       loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
-       loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
        loadmodel->DrawLight = R_Q1BSP_DrawLight;
 
        skinfiles = Mod_LoadSkinFiles();
@@ -8127,19 +7888,19 @@ 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++;
                }
@@ -8148,10 +7909,10 @@ 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"))
@@ -8159,19 +7920,19 @@ 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++;
                }
@@ -8212,12 +7973,12 @@ 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);
@@ -8321,7 +8082,7 @@ 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;
@@ -8340,10 +8101,10 @@ 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;
@@ -8352,12 +8113,12 @@ 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;
@@ -8380,13 +8141,13 @@ 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++;
                }
        }
@@ -8398,21 +8159,21 @@ void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
        // allocate storage for final mesh data
        loadmodel->num_textures = numtextures * loadmodel->numskins;
        loadmodel->num_texturesperskin = numtextures;
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + numtriangles * sizeof(int[3]) + (numvertices <= 65536 ? numtriangles * sizeof(unsigned short[3]) : 0) + (r_enableshadowvolumes.integer ? numtriangles * sizeof(int[3]) : 0) + numvertices * sizeof(float[14]) + loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + numtriangles * sizeof(int[3]) + (numvertices <= 65536 ? numtriangles * sizeof(unsigned short[3]) : 0) + numvertices * sizeof(float[14]) + loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
        loadmodel->brush.submodels = (dp_model_t **)data;data += loadmodel->brush.numsubmodels * sizeof(dp_model_t *);
        loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
        loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
        loadmodel->surfmesh.num_vertices = numvertices;
        loadmodel->surfmesh.num_triangles = numtriangles;
-       if (r_enableshadowvolumes.integer)
-               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += numtriangles * sizeof(int[3]);
        loadmodel->surfmesh.data_vertex3f = (float *)data;data += numvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_svector3f = (float *)data;data += numvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_tvector3f = (float *)data;data += numvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_normal3f = (float *)data;data += numvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += numvertices * sizeof(float[2]);
-       if (loadmodel->surfmesh.num_vertices <= 65536)
+
+       if (loadmodel->surfmesh.num_vertices <= 65536) {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
+       }
 
        for (j = 0;j < loadmodel->surfmesh.num_vertices;j++)
        {
@@ -8433,26 +8194,21 @@ 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);
 
-       // make a single combined shadow mesh to allow optimized shadow volume creation
-       Mod_Q1BSP_CreateShadowMesh(loadmodel);
-
        // compute all the mesh information that was not loaded from the file
        if (loadmodel->surfmesh.data_element3s)
                for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
                        loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
-       Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
+       Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
        // generate normals if the file did not have them
        if (!VectorLength2(loadmodel->surfmesh.data_normal3f))
                Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, r_smoothnormals_areaweighting.integer != 0);
        Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, r_smoothnormals_areaweighting.integer != 0);
-       if (loadmodel->surfmesh.data_neighbor3i)
-               Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
 
        // if this is a worldmodel and has no BSP tree, create a fake one for the purpose
        loadmodel->brush.num_visleafs = 1;
@@ -8525,24 +8281,24 @@ 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]));