]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_alias.c
theora encoding: set VP3 compatibility mode. This SHOULD fix issues with youtube.
[xonotic/darkplaces.git] / model_alias.c
index ae33b14f03af701acfc80c81b9e898498aa8e420..f25eaa3722e7798432465b1027e92173c218bd72 100644 (file)
@@ -21,7 +21,15 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "quakedef.h"
 #include "image.h"
 #include "r_shadow.h"
+#include "mod_skeletal_animatevertices_generic.h"
+#ifdef SSE_POSSIBLE
+#include "mod_skeletal_animatevertices_sse.h"
+#endif
 
+#ifdef SSE_POSSIBLE
+static qboolean r_skeletal_use_sse_defined = false;
+cvar_t r_skeletal_use_sse = {0, "r_skeletal_use_sse", "1", "use SSE for skeletal model animation"};
+#endif
 cvar_t r_skeletal_debugbone = {0, "r_skeletal_debugbone", "-1", "development cvar for testing skeletal model code"};
 cvar_t r_skeletal_debugbonecomponent = {0, "r_skeletal_debugbonecomponent", "3", "development cvar for testing skeletal model code"};
 cvar_t r_skeletal_debugbonevalue = {0, "r_skeletal_debugbonevalue", "100", "development cvar for testing skeletal model code"};
@@ -32,6 +40,40 @@ cvar_t mod_alias_supporttagscale = {0, "mod_alias_supporttagscale", "1", "suppor
 
 float mod_md3_sin[320];
 
+static size_t Mod_Skeltal_AnimateVertices_maxbonepose = 0;
+static void *Mod_Skeltal_AnimateVertices_bonepose = NULL;
+void Mod_Skeletal_FreeBuffers(void)
+{
+       if(Mod_Skeltal_AnimateVertices_bonepose)
+               Mem_Free(Mod_Skeltal_AnimateVertices_bonepose);
+       Mod_Skeltal_AnimateVertices_maxbonepose = 0;
+       Mod_Skeltal_AnimateVertices_bonepose = NULL;
+}
+void *Mod_Skeletal_AnimateVertices_AllocBuffers(size_t nbytes)
+{
+       if(Mod_Skeltal_AnimateVertices_maxbonepose < nbytes)
+       {
+               if(Mod_Skeltal_AnimateVertices_bonepose)
+                       Mem_Free(Mod_Skeltal_AnimateVertices_bonepose);
+               Mod_Skeltal_AnimateVertices_bonepose = Z_Malloc(nbytes);
+               Mod_Skeltal_AnimateVertices_maxbonepose = nbytes;
+       }
+       return Mod_Skeltal_AnimateVertices_bonepose;
+}
+
+void Mod_Skeletal_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
+{
+#ifdef SSE_POSSIBLE
+       if(r_skeletal_use_sse_defined)
+               if(r_skeletal_use_sse.integer)
+               {
+                       Mod_Skeletal_AnimateVertices_SSE(model, frameblend, skeleton, vertex3f, normal3f, svector3f, tvector3f);
+                       return;
+               }
+#endif
+       Mod_Skeletal_AnimateVertices_Generic(model, frameblend, skeleton, vertex3f, normal3f, svector3f, tvector3f);
+}
+
 void Mod_AliasInit (void)
 {
        int i;
@@ -44,6 +86,18 @@ void Mod_AliasInit (void)
        Cvar_RegisterVariable(&mod_alias_supporttagscale);
        for (i = 0;i < 320;i++)
                mod_md3_sin[i] = sin(i * M_PI * 2.0f / 256.0);
+#ifdef SSE_POSSIBLE
+       if(Sys_HaveSSE())
+       {
+               Con_Printf("Skeletal animation uses SSE code path\n");
+               r_skeletal_use_sse_defined = true;
+               Cvar_RegisterVariable(&r_skeletal_use_sse);
+       }
+       else
+               Con_Printf("Skeletal animation uses generic code path (SSE disabled or not detected)\n");
+#else
+       Con_Printf("Skeletal animation uses generic code path (SSE not compiled in)\n");
+#endif
 }
 
 int Mod_Skeletal_AddBlend(dp_model_t *model, const blendweights_t *newweights)
@@ -106,216 +160,6 @@ int Mod_Skeletal_CompressBlend(dp_model_t *model, const int *newindex, const flo
        return Mod_Skeletal_AddBlend(model, &newweights);
 }
 
-static int maxbonepose = 0;
-static float (*bonepose)[12] = NULL;
-
-void Mod_Skeletal_FreeBuffers(void)
-{
-       if(bonepose)
-               Mem_Free(bonepose);
-       maxbonepose = 0;
-       bonepose = NULL;
-}
-
-void Mod_Skeletal_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
-{
-       // vertex weighted skeletal
-       int i, k;
-       int blends;
-       float m[12];
-       float (*boneposerelative)[12];
-       const blendweights_t * RESTRICT weights;
-
-       if (maxbonepose < model->num_bones*2 + model->surfmesh.num_blends)
-       {
-               if (bonepose)
-                       Z_Free(bonepose);
-               maxbonepose = model->num_bones*2 + model->surfmesh.num_blends;
-               bonepose = (float (*)[12])Z_Malloc(maxbonepose * sizeof(float[12]));
-       }
-
-       boneposerelative = bonepose + model->num_bones;
-
-       if (skeleton && !skeleton->relativetransforms)
-               skeleton = NULL;
-
-       // interpolate matrices
-       if (skeleton)
-       {
-               for (i = 0;i < model->num_bones;i++)
-               {
-                       Matrix4x4_ToArray12FloatD3D(&skeleton->relativetransforms[i], m);
-                       if (model->data_bones[i].parent >= 0)
-                               R_ConcatTransforms(bonepose[model->data_bones[i].parent], m, bonepose[i]);
-                       else
-                               memcpy(bonepose[i], m, sizeof(m));
-
-                       // create a relative deformation matrix to describe displacement
-                       // from the base mesh, which is used by the actual weighting
-                       R_ConcatTransforms(bonepose[i], model->data_baseboneposeinverse + i * 12, boneposerelative[i]);
-               }
-       }
-       else
-       {
-               float originscale = model->num_posescale;
-               float x,y,z,w,lerp;
-               const short * RESTRICT pose6s;
-               for (i = 0;i < model->num_bones;i++)
-               {
-                       memset(m, 0, sizeof(m));
-                       for (blends = 0;blends < MAX_FRAMEBLENDS && frameblend[blends].lerp > 0;blends++)
-                       {
-                               pose6s = model->data_poses6s + 6 * (frameblend[blends].subframe * model->num_bones + i);
-                               lerp = frameblend[blends].lerp;
-                               x = pose6s[3] * (1.0f / 32767.0f);
-                               y = pose6s[4] * (1.0f / 32767.0f);
-                               z = pose6s[5] * (1.0f / 32767.0f);
-                               w = 1.0f - (x*x+y*y+z*z);
-                               w = w > 0.0f ? -sqrt(w) : 0.0f;
-                               m[ 0] += (1-2*(y*y+z*z)) * lerp;
-                               m[ 1] += (  2*(x*y-z*w)) * lerp;
-                               m[ 2] += (  2*(x*z+y*w)) * lerp;
-                               m[ 3] += (pose6s[0] * originscale) * lerp;
-                               m[ 4] += (  2*(x*y+z*w)) * lerp;
-                               m[ 5] += (1-2*(x*x+z*z)) * lerp;
-                               m[ 6] += (  2*(y*z-x*w)) * lerp;
-                               m[ 7] += (pose6s[1] * originscale) * lerp;
-                               m[ 8] += (  2*(x*z-y*w)) * lerp;
-                               m[ 9] += (  2*(y*z+x*w)) * lerp;
-                               m[10] += (1-2*(x*x+y*y)) * lerp;
-                               m[11] += (pose6s[2] * originscale) * lerp;
-                       }
-                       VectorNormalize(m       );
-                       VectorNormalize(m + 4);
-                       VectorNormalize(m + 8);
-                       if (i == r_skeletal_debugbone.integer)
-                               m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
-                       m[3] *= r_skeletal_debugtranslatex.value;
-                       m[7] *= r_skeletal_debugtranslatey.value;
-                       m[11] *= r_skeletal_debugtranslatez.value;
-                       if (model->data_bones[i].parent >= 0)
-                               R_ConcatTransforms(bonepose[model->data_bones[i].parent], m, bonepose[i]);
-                       else
-                               memcpy(bonepose[i], m, sizeof(m));
-                       // create a relative deformation matrix to describe displacement
-                       // from the base mesh, which is used by the actual weighting
-                       R_ConcatTransforms(bonepose[i], model->data_baseboneposeinverse + i * 12, boneposerelative[i]);
-               }
-       }
-       
-       // generate matrices for all blend combinations
-       weights = model->surfmesh.data_blendweights;
-       for (i = 0;i < model->surfmesh.num_blends;i++, weights++)
-       {
-               float * RESTRICT b = boneposerelative[model->num_bones + i];
-               const float * RESTRICT m = boneposerelative[weights->index[0]];
-               float f = weights->influence[0] * (1.0f / 255.0f);
-               b[ 0] = f*m[ 0]; b[ 1] = f*m[ 1]; b[ 2] = f*m[ 2]; b[ 3] = f*m[ 3];
-               b[ 4] = f*m[ 4]; b[ 5] = f*m[ 5]; b[ 6] = f*m[ 6]; b[ 7] = f*m[ 7];
-               b[ 8] = f*m[ 8]; b[ 9] = f*m[ 9]; b[10] = f*m[10]; b[11] = f*m[11];
-               for (k = 1;k < 4 && weights->influence[k];k++)
-               {
-                       m = boneposerelative[weights->index[k]];
-                       f = weights->influence[k] * (1.0f / 255.0f);
-                       b[ 0] += f*m[ 0]; b[ 1] += f*m[ 1]; b[ 2] += f*m[ 2]; b[ 3] += f*m[ 3];
-                       b[ 4] += f*m[ 4]; b[ 5] += f*m[ 5]; b[ 6] += f*m[ 6]; b[ 7] += f*m[ 7];
-                       b[ 8] += f*m[ 8]; b[ 9] += f*m[ 9]; b[10] += f*m[10]; b[11] += f*m[11];
-               }
-       }
-
-       // transform vertex attributes by blended matrices
-       if (vertex3f)
-       {
-               const float * RESTRICT v = model->surfmesh.data_vertex3f;
-               const unsigned short * RESTRICT b = model->surfmesh.blends;
-               // special case common combinations of attributes to avoid repeated loading of matrices
-               if (normal3f)
-               {
-                       const float * RESTRICT n = model->surfmesh.data_normal3f;
-                       if (svector3f && tvector3f)
-                       {
-                               const float * RESTRICT sv = model->surfmesh.data_svector3f;
-                               const float * RESTRICT tv = model->surfmesh.data_tvector3f;
-                               for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, n += 3, sv += 3, tv += 3, b++, vertex3f += 3, normal3f += 3, svector3f += 3, tvector3f += 3)
-                               {
-                                       const float * RESTRICT m = boneposerelative[*b];
-                                       vertex3f[0] = (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
-                                       vertex3f[1] = (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
-                                       vertex3f[2] = (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
-                                       normal3f[0] = (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
-                                       normal3f[1] = (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
-                                       normal3f[2] = (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
-                                       svector3f[0] = (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
-                                       svector3f[1] = (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
-                                       svector3f[2] = (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
-                                       tvector3f[0] = (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
-                                       tvector3f[1] = (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
-                                       tvector3f[2] = (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
-                               }
-                               return;
-                       }
-                       for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, n += 3, b++, vertex3f += 3, normal3f += 3)
-                       {
-                               const float * RESTRICT m = boneposerelative[*b];
-                               vertex3f[0] = (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
-                               vertex3f[1] = (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
-                               vertex3f[2] = (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
-                               normal3f[0] = (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
-                               normal3f[1] = (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
-                               normal3f[2] = (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
-                       }
-               }
-               else
-               {
-                       for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, b++, vertex3f += 3)
-                       {
-                               const float * RESTRICT m = boneposerelative[*b];
-                               vertex3f[0] = (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
-                               vertex3f[1] = (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
-                               vertex3f[2] = (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
-                       }
-               }
-       }
-       else if (normal3f)
-       {
-               const float * RESTRICT n = model->surfmesh.data_normal3f;
-               const unsigned short * RESTRICT b = model->surfmesh.blends;
-               for (i = 0;i < model->surfmesh.num_vertices;i++, n += 3, b++, normal3f += 3)
-               {
-                       const float * RESTRICT m = boneposerelative[*b];
-                       normal3f[0] = (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
-                       normal3f[1] = (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
-                       normal3f[2] = (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
-               }
-       }
-
-       if (svector3f)
-       {
-               const float * RESTRICT sv = model->surfmesh.data_svector3f;
-               const unsigned short * RESTRICT b = model->surfmesh.blends;
-               for (i = 0;i < model->surfmesh.num_vertices;i++, sv += 3, b++, svector3f += 3)
-               {
-                       const float * RESTRICT m = boneposerelative[*b];
-                       svector3f[0] = (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
-                       svector3f[1] = (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
-                       svector3f[2] = (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
-               }
-       }
-
-       if (tvector3f)
-       {
-               const float * RESTRICT tv = model->surfmesh.data_tvector3f;
-               const unsigned short * RESTRICT b = model->surfmesh.blends;
-               for (i = 0;i < model->surfmesh.num_vertices;i++, tv += 3, b++, tvector3f += 3)
-               {
-                       const float * RESTRICT m = boneposerelative[*b];
-                       tvector3f[0] = (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
-                       tvector3f[1] = (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
-                       tvector3f[2] = (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
-               }
-       }
-}
-
 void Mod_MD3_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
 {
        // vertex morph
@@ -356,7 +200,7 @@ void Mod_MD3_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend
                }
                // the yaw and pitch stored in md3 models are 8bit quantized angles
                // (0-255), and as such a lookup table is very well suited to
-               // decoding them, and since cosine is equivilant to sine with an
+               // decoding them, and since cosine is equivalent to sine with an
                // extra 45 degree rotation, this uses one lookup table for both
                // sine and cosine with a +64 bias to get cosine.
                if (normal3f)
@@ -404,7 +248,6 @@ void Mod_MD3_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend
                }
        }
 }
-
 void Mod_MDL_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
 {
        // vertex morph
@@ -957,6 +800,8 @@ void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, con
        int i;
        static char stripbuf[MAX_QPATH];
        skinfileitem_t *skinfileitem;
+       if(developer_extra.integer)
+               Con_DPrintf("Looking up texture for %s (default: %s)\n", meshname, shadername);
        if (skinfile)
        {
                // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
@@ -970,6 +815,8 @@ void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, con
                                if (!strcmp(skinfileitem->name, meshname))
                                {
                                        Image_StripImageExtension(skinfileitem->replacement, stripbuf, sizeof(stripbuf));
+                                       if(developer_extra.integer)
+                                               Con_DPrintf("--> got %s from skin file\n", stripbuf);
                                        Mod_LoadTextureFromQ3Shader(skin, stripbuf, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
                                        break;
                                }
@@ -978,12 +825,16 @@ void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, con
                        {
                                // don't render unmentioned meshes
                                Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
+                               if(developer_extra.integer)
+                                       Con_DPrintf("--> skipping\n");
                                skin->basematerialflags = skin->currentmaterialflags = MATERIALFLAG_NOSHADOW | MATERIALFLAG_NODRAW;
                        }
                }
        }
        else
        {
+               if(developer_extra.integer)
+                       Con_DPrintf("--> using default\n");
                Image_StripImageExtension(shadername, stripbuf, sizeof(stripbuf));
                Mod_LoadTextureFromQ3Shader(skin, stripbuf, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
        }
@@ -1040,6 +891,7 @@ void Mod_IDP0_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->DrawLight = R_Q1BSP_DrawLight;
        loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
        loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
+       // FIXME add TraceBrush!
        loadmodel->PointSuperContents = NULL;
 
        loadmodel->num_surfaces = 1;
@@ -1201,9 +1053,11 @@ void Mod_IDP0_Load(dp_model_t *mod, void *buffer, void *bufferend)
 // load the frames
        loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
        loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
-       loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
        Mod_MDL_LoadFrames (startframes, numverts, vertremap);
-       Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       if (loadmodel->surfmesh.data_neighbor3i)
+               Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
        Mod_Alias_CalculateBoundingBox();
        Mod_Alias_MorphMesh_CompileFrames();
 
@@ -1330,6 +1184,7 @@ void Mod_IDP0_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -1419,14 +1274,15 @@ void Mod_IDP2_Load(dp_model_t *mod, void *buffer, void *bufferend)
 
        loadmodel->num_surfaces = 1;
        loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + (r_enableshadowvolumes.integer ? loadmodel->surfmesh.num_triangles * sizeof(int[3]) : 0));
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
        loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
        loadmodel->sortedmodelsurfaces[0] = 0;
        loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
        loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
        loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
 
        loadmodel->synctype = ST_RAND;
 
@@ -1570,7 +1426,8 @@ void Mod_IDP2_Load(dp_model_t *mod, void *buffer, void *bufferend)
 
        Mem_Free(vertremap);
 
-       Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       if (loadmodel->surfmesh.data_neighbor3i)
+               Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
        Mod_Alias_CalculateBoundingBox();
        Mod_Alias_MorphMesh_CompileFrames();
 
@@ -1587,6 +1444,7 @@ void Mod_IDP2_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -1695,7 +1553,7 @@ void Mod_IDP3_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
        loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
        loadmodel->num_texturesperskin = loadmodel->num_surfaces;
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshvertices * sizeof(float[2]) + meshvertices * loadmodel->numframes * sizeof(md3vertex_t));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (r_enableshadowvolumes.integer ? meshtriangles * sizeof(int[3]) : 0) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshvertices * sizeof(float[2]) + meshvertices * loadmodel->numframes * sizeof(md3vertex_t));
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_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);
@@ -1704,7 +1562,8 @@ void Mod_IDP3_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
        loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
        loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
        loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
        loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
        if (meshvertices <= 65536)
@@ -1754,7 +1613,8 @@ void Mod_IDP3_Load(dp_model_t *mod, void *buffer, void *bufferend)
        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_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       if (loadmodel->surfmesh.data_neighbor3i)
+               Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
        Mod_Alias_MorphMesh_CompileFrames();
        Mod_Alias_CalculateBoundingBox();
        Mod_FreeSkinFiles(skinfiles);
@@ -1767,6 +1627,7 @@ void Mod_IDP3_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -1951,14 +1812,15 @@ void Mod_ZYMOTICMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
        loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
        loadmodel->num_texturesperskin = loadmodel->num_surfaces;
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshvertices * sizeof(float[14]) + meshvertices * sizeof(unsigned short) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (r_enableshadowvolumes.integer ? meshtriangles * sizeof(int[3]) : 0) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshvertices * sizeof(float[14]) + meshvertices * sizeof(unsigned short) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]));
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_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 = meshvertices;
        loadmodel->surfmesh.num_triangles = meshtriangles;
        loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
        loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
@@ -2129,9 +1991,10 @@ void Mod_ZYMOTICMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        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_BuildBaseBonePoses();
-       Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
-       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, true);
-       Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       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);
 
        loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
 
@@ -2139,6 +2002,7 @@ void Mod_ZYMOTICMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -2255,14 +2119,15 @@ void Mod_DARKPLACESMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
        loadmodel->num_texturesperskin = loadmodel->num_surfaces;
        // do most allocations as one merged chunk
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(unsigned short)) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + (r_enableshadowvolumes.integer ? meshtriangles * sizeof(int[3]) : 0) + meshvertices * (sizeof(float[14]) + sizeof(unsigned short)) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_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 = meshvertices;
        loadmodel->surfmesh.num_triangles = meshtriangles;
        loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
        loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
@@ -2480,8 +2345,9 @@ void Mod_DARKPLACESMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
                        loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
        Mod_BuildBaseBonePoses();
-       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, true);
-       Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       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);
 
        loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
 
@@ -2489,6 +2355,7 @@ void Mod_DARKPLACESMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -2891,13 +2758,14 @@ void Mod_PSKMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->surfmesh.num_vertices = meshvertices;
        loadmodel->surfmesh.num_triangles = meshtriangles;
        // do most allocations as one merged chunk
-       size = loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * sizeof(unsigned short) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t) + ((loadmodel->surfmesh.num_vertices <= 65536) ? (loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3])) : 0);
+       size = loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + (r_enableshadowvolumes.integer ? loadmodel->surfmesh.num_triangles * sizeof(int[3]) : 0)  + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * sizeof(unsigned short) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t) + ((loadmodel->surfmesh.num_vertices <= 65536) ? (loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3])) : 0);
        data = (unsigned char *)Mem_Alloc(loadmodel->mempool, size);
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_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.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
        loadmodel->surfmesh.data_vertex3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
        loadmodel->surfmesh.data_svector3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
        loadmodel->surfmesh.data_tvector3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
@@ -3059,9 +2927,10 @@ void Mod_PSKMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        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_BuildBaseBonePoses();
-       Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
-       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, true);
-       Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
+       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);
        Mod_Alias_CalculateBoundingBox();
 
        loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
@@ -3070,6 +2939,7 @@ void Mod_PSKMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
@@ -3086,9 +2956,11 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        int i, j, k, meshvertices, meshtriangles;
        float *vposition = NULL, *vtexcoord = NULL, *vnormal = NULL, *vtangent = NULL;
        unsigned char *vblendindexes = NULL, *vblendweights = NULL;
-       iqmjoint_t *joint;
+       iqmjoint1_t *joint1 = NULL;
+       iqmjoint_t *joint = NULL;
+       iqmpose1_t *pose1 = NULL;
+       iqmpose_t *pose = NULL;
        iqmanim_t *anim;
-       iqmpose_t *pose;
        iqmmesh_t *mesh;
        iqmbounds_t *bounds;
        iqmvertexarray_t *va;
@@ -3103,8 +2975,8 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        header = (iqmheader_t *)buffer;
        if (memcmp(header->id, "INTERQUAKEMODEL", 16))
                Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model", loadmodel->name);
-       if (LittleLong(header->version) != 1)
-               Host_Error ("Mod_INTERQUAKEMODEL_Load: only version 1 models are currently supported (name = %s)", loadmodel->name);
+       if (LittleLong(header->version) != 1 && LittleLong(header->version) != 2)
+               Host_Error ("Mod_INTERQUAKEMODEL_Load: only version 1 and 2 models are currently supported (name = %s)", loadmodel->name);
 
        loadmodel->modeldatatypestring = "IQM";
 
@@ -3253,14 +3125,15 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        meshtriangles = header->num_triangles;
 
        // do most allocations as one merged chunk
-       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(unsigned short)) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
+       data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0) + (r_enableshadowvolumes.integer ? meshtriangles * sizeof(int[3]) : 0) + meshvertices * (sizeof(float[14]) + sizeof(unsigned short)) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
        loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_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 = meshvertices;
        loadmodel->surfmesh.num_triangles = meshtriangles;
        loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
-       loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
+       if (r_enableshadowvolumes.integer)
+               loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
        loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
        loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
@@ -3286,31 +3159,67 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        }
 
        // load the bone info
-       joint = (iqmjoint_t *) (pbase + header->ofs_joints);
-       for (i = 0;i < loadmodel->num_bones;i++)
+       if (header->version == 1)
        {
-               matrix4x4_t relbase, relinvbase, pinvbase, invbase;
-               joint[i].name = LittleLong(joint[i].name);
-               joint[i].parent = LittleLong(joint[i].parent);
-               for (j = 0;j < 3;j++)
+               joint1 = (iqmjoint1_t *) (pbase + header->ofs_joints);
+               for (i = 0;i < loadmodel->num_bones;i++)
                {
-                       joint[i].origin[j] = LittleFloat(joint[i].origin[j]);
-                       joint[i].rotation[j] = LittleFloat(joint[i].rotation[j]);
-                       joint[i].scale[j] = LittleFloat(joint[i].scale[j]);
+                       matrix4x4_t relbase, relinvbase, pinvbase, invbase;
+                       joint1[i].name = LittleLong(joint1[i].name);
+                       joint1[i].parent = LittleLong(joint1[i].parent);
+                       for (j = 0;j < 3;j++)
+                       {
+                               joint1[i].origin[j] = LittleFloat(joint1[i].origin[j]);
+                               joint1[i].rotation[j] = LittleFloat(joint1[i].rotation[j]);
+                               joint1[i].scale[j] = LittleFloat(joint1[i].scale[j]);
+                       }
+                       strlcpy(loadmodel->data_bones[i].name, &text[joint1[i].name], sizeof(loadmodel->data_bones[i].name));
+                       loadmodel->data_bones[i].parent = joint1[i].parent;
+                       if (loadmodel->data_bones[i].parent >= i)
+                               Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
+                       Matrix4x4_FromDoom3Joint(&relbase, joint1[i].origin[0], joint1[i].origin[1], joint1[i].origin[2], joint1[i].rotation[0], joint1[i].rotation[1], joint1[i].rotation[2]);
+                       Matrix4x4_Invert_Simple(&relinvbase, &relbase);
+                       if (loadmodel->data_bones[i].parent >= 0)
+                       {
+                               Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
+                               Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
+                               Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
+                       }
+                       else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
                }
-               strlcpy(loadmodel->data_bones[i].name, &text[joint[i].name], sizeof(loadmodel->data_bones[i].name));
-               loadmodel->data_bones[i].parent = joint[i].parent;
-               if (loadmodel->data_bones[i].parent >= i)
-                       Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
-               Matrix4x4_FromDoom3Joint(&relbase, joint[i].origin[0], joint[i].origin[1], joint[i].origin[2], joint[i].rotation[0], joint[i].rotation[1], joint[i].rotation[2]);
-               Matrix4x4_Invert_Simple(&relinvbase, &relbase);
-               if (loadmodel->data_bones[i].parent >= 0)
+       }
+       else
+       {
+               joint = (iqmjoint_t *) (pbase + header->ofs_joints);
+               for (i = 0;i < loadmodel->num_bones;i++)
                {
-                       Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
-                       Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
-                       Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
-               }       
-               else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
+                       matrix4x4_t relbase, relinvbase, pinvbase, invbase;
+                       joint[i].name = LittleLong(joint[i].name);
+                       joint[i].parent = LittleLong(joint[i].parent);
+                       for (j = 0;j < 3;j++)
+                       {
+                               joint[i].origin[j] = LittleFloat(joint[i].origin[j]);
+                               joint[i].rotation[j] = LittleFloat(joint[i].rotation[j]);
+                               joint[i].scale[j] = LittleFloat(joint[i].scale[j]);
+                       }
+                       joint[i].rotation[3] = LittleFloat(joint[i].rotation[3]);
+                       strlcpy(loadmodel->data_bones[i].name, &text[joint[i].name], sizeof(loadmodel->data_bones[i].name));
+                       loadmodel->data_bones[i].parent = joint[i].parent;
+                       if (loadmodel->data_bones[i].parent >= i)
+                               Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
+            if (joint[i].rotation[3] > 0)
+                Vector4Negate(joint[i].rotation, joint[i].rotation);
+            Vector4Normalize2(joint[i].rotation, joint[i].rotation);
+                       Matrix4x4_FromDoom3Joint(&relbase, joint[i].origin[0], joint[i].origin[1], joint[i].origin[2], joint[i].rotation[0], joint[i].rotation[1], joint[i].rotation[2]);
+                       Matrix4x4_Invert_Simple(&relinvbase, &relbase);
+                       if (loadmodel->data_bones[i].parent >= 0)
+                       {
+                               Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
+                               Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
+                               Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
+                       }       
+                       else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
+               }
        }
 
        // set up the animscenes based on the anims
@@ -3329,57 +3238,98 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                loadmodel->animscenes[i].framerate = anim[i].framerate;
        }
        
-       pose = (iqmpose_t *) (pbase + header->ofs_poses);
        biggestorigin = 0;
-       for (i = 0;i < (int)header->num_poses;i++)
-       {
-               float f;
-               pose[i].parent = LittleLong(pose[i].parent);
-               pose[i].channelmask = LittleLong(pose[i].channelmask);
-               pose[i].channeloffset[0] = LittleFloat(pose[i].channeloffset[0]);
-               pose[i].channeloffset[1] = LittleFloat(pose[i].channeloffset[1]);
-               pose[i].channeloffset[2] = LittleFloat(pose[i].channeloffset[2]);       
-               pose[i].channeloffset[3] = LittleFloat(pose[i].channeloffset[3]);
-               pose[i].channeloffset[4] = LittleFloat(pose[i].channeloffset[4]);
-               pose[i].channeloffset[5] = LittleFloat(pose[i].channeloffset[5]);
-               pose[i].channeloffset[6] = LittleFloat(pose[i].channeloffset[6]);
-               pose[i].channeloffset[7] = LittleFloat(pose[i].channeloffset[7]);
-               pose[i].channeloffset[8] = LittleFloat(pose[i].channeloffset[8]);
-               pose[i].channelscale[0] = LittleFloat(pose[i].channelscale[0]);
-               pose[i].channelscale[1] = LittleFloat(pose[i].channelscale[1]);
-               pose[i].channelscale[2] = LittleFloat(pose[i].channelscale[2]);
-               pose[i].channelscale[3] = LittleFloat(pose[i].channelscale[3]);
-               pose[i].channelscale[4] = LittleFloat(pose[i].channelscale[4]);
-               pose[i].channelscale[5] = LittleFloat(pose[i].channelscale[5]);
-               pose[i].channelscale[6] = LittleFloat(pose[i].channelscale[6]);
-               pose[i].channelscale[7] = LittleFloat(pose[i].channelscale[7]);
-               pose[i].channelscale[8] = LittleFloat(pose[i].channelscale[8]);
-               f = fabs(pose[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
-               f = fabs(pose[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
-               f = fabs(pose[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
-               f = fabs(pose[i].channeloffset[0] + 0xFFFF*pose[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
-               f = fabs(pose[i].channeloffset[1] + 0xFFFF*pose[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
-               f = fabs(pose[i].channeloffset[2] + 0xFFFF*pose[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
+       if (header->version == 1)
+       {
+               pose1 = (iqmpose1_t *) (pbase + header->ofs_poses);
+               for (i = 0;i < (int)header->num_poses;i++)
+               {
+                       float f;
+                       pose1[i].parent = LittleLong(pose1[i].parent);
+                       pose1[i].channelmask = LittleLong(pose1[i].channelmask);
+                       for (j = 0;j < 9;j++)
+                       {
+                               pose1[i].channeloffset[j] = LittleFloat(pose1[i].channeloffset[j]);
+                               pose1[i].channelscale[j] = LittleFloat(pose1[i].channelscale[j]);
+                       }
+                       f = fabs(pose1[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose1[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose1[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose1[i].channeloffset[0] + 0xFFFF*pose1[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose1[i].channeloffset[1] + 0xFFFF*pose1[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose1[i].channeloffset[2] + 0xFFFF*pose1[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
+               }
+       }
+       else
+       {
+               pose = (iqmpose_t *) (pbase + header->ofs_poses);
+               for (i = 0;i < (int)header->num_poses;i++)
+               {
+                       float f;
+                       pose[i].parent = LittleLong(pose[i].parent);
+                       pose[i].channelmask = LittleLong(pose[i].channelmask);
+                       for (j = 0;j < 10;j++)
+                       {
+                               pose[i].channeloffset[j] = LittleFloat(pose[i].channeloffset[j]);
+                               pose[i].channelscale[j] = LittleFloat(pose[i].channelscale[j]);
+                       }
+                       f = fabs(pose[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose[i].channeloffset[0] + 0xFFFF*pose[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose[i].channeloffset[1] + 0xFFFF*pose[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
+                       f = fabs(pose[i].channeloffset[2] + 0xFFFF*pose[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
+               }
        }
        loadmodel->num_posescale = biggestorigin / 32767.0f;
        loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
 
        // load the pose data
        framedata = (unsigned short *) (pbase + header->ofs_frames);
-       for (i = 0, k = 0;i < (int)header->num_frames;i++)      
+       if (header->version == 1)
        {
-               for (j = 0;j < (int)header->num_poses;j++, k++)
+               for (i = 0, k = 0;i < (int)header->num_frames;i++)
                {
-                       loadmodel->data_poses6s[k*6 + 0] = loadmodel->num_poseinvscale * (pose[j].channeloffset[0] + (pose[j].channelmask&1 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[0] : 0));
-                       loadmodel->data_poses6s[k*6 + 1] = loadmodel->num_poseinvscale * (pose[j].channeloffset[1] + (pose[j].channelmask&2 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[1] : 0));
-                       loadmodel->data_poses6s[k*6 + 2] = loadmodel->num_poseinvscale * (pose[j].channeloffset[2] + (pose[j].channelmask&4 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[2] : 0));
-                       loadmodel->data_poses6s[k*6 + 3] = 32767.0f * (pose[j].channeloffset[3] + (pose[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[3] : 0));
-                       loadmodel->data_poses6s[k*6 + 4] = 32767.0f * (pose[j].channeloffset[4] + (pose[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[4] : 0));
-                       loadmodel->data_poses6s[k*6 + 5] = 32767.0f * (pose[j].channeloffset[5] + (pose[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[5] : 0));
-                       // skip scale data for now
-                       if(pose[j].channelmask&64) framedata++;
-                       if(pose[j].channelmask&128) framedata++;
-                       if(pose[j].channelmask&256) framedata++;
+                       for (j = 0;j < (int)header->num_poses;j++, k++)
+                       {
+                               loadmodel->data_poses6s[k*6 + 0] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[0] + (pose1[j].channelmask&1 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[0] : 0));
+                               loadmodel->data_poses6s[k*6 + 1] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[1] + (pose1[j].channelmask&2 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[1] : 0));
+                               loadmodel->data_poses6s[k*6 + 2] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[2] + (pose1[j].channelmask&4 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[2] : 0));
+                               loadmodel->data_poses6s[k*6 + 3] = 32767.0f * (pose1[j].channeloffset[3] + (pose1[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[3] : 0));
+                               loadmodel->data_poses6s[k*6 + 4] = 32767.0f * (pose1[j].channeloffset[4] + (pose1[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[4] : 0));
+                               loadmodel->data_poses6s[k*6 + 5] = 32767.0f * (pose1[j].channeloffset[5] + (pose1[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[5] : 0));
+                               // skip scale data for now
+                               if(pose1[j].channelmask&64) framedata++;
+                               if(pose1[j].channelmask&128) framedata++;
+                               if(pose1[j].channelmask&256) framedata++;
+                       }
+               }
+       }
+       else
+       {
+               for (i = 0, k = 0;i < (int)header->num_frames;i++)      
+               {
+                       for (j = 0;j < (int)header->num_poses;j++, k++)
+                       {
+                               float rot[4];
+                               loadmodel->data_poses6s[k*6 + 0] = loadmodel->num_poseinvscale * (pose[j].channeloffset[0] + (pose[j].channelmask&1 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[0] : 0));
+                               loadmodel->data_poses6s[k*6 + 1] = loadmodel->num_poseinvscale * (pose[j].channeloffset[1] + (pose[j].channelmask&2 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[1] : 0));
+                               loadmodel->data_poses6s[k*6 + 2] = loadmodel->num_poseinvscale * (pose[j].channeloffset[2] + (pose[j].channelmask&4 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[2] : 0));
+                               rot[0] = pose[j].channeloffset[3] + (pose[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[3] : 0);
+                               rot[1] = pose[j].channeloffset[4] + (pose[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[4] : 0);
+                               rot[2] = pose[j].channeloffset[5] + (pose[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[5] : 0);
+                               rot[3] = pose[j].channeloffset[6] + (pose[j].channelmask&64 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[6] : 0);
+                               if (rot[3] > 0)
+                                       Vector4Negate(rot, rot);
+                               Vector4Normalize2(rot, rot);
+                               loadmodel->data_poses6s[k*6 + 3] = 32767.0f * rot[0];
+                               loadmodel->data_poses6s[k*6 + 4] = 32767.0f * rot[1];
+                               loadmodel->data_poses6s[k*6 + 5] = 32767.0f * rot[2];
+                               // skip scale data for now
+                               if(pose[j].channelmask&128) framedata++;
+                               if(pose[j].channelmask&256) framedata++;
+                               if(pose[j].channelmask&512) framedata++;
+                       }
                }
        }
 
@@ -3442,7 +3392,7 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        }
        Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, header->num_vertexes, __FILE__, __LINE__);
 
-       if (header->ofs_neighbors)
+       if (header->ofs_neighbors && loadmodel->surfmesh.data_neighbor3i)
        {
                inelements = (const int *) (pbase + header->ofs_neighbors);
                outelements = loadmodel->surfmesh.data_neighbor3i;
@@ -3550,10 +3500,10 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
                        loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
        if (!vnormal)
-               Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
+               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);
        if (!vnormal || !vtangent)
-               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, true);
-       if (!header->ofs_neighbors)
+               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 (!header->ofs_neighbors && loadmodel->surfmesh.data_neighbor3i)
                Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
        if (!header->ofs_bounds)
                Mod_Alias_CalculateBoundingBox();
@@ -3564,6 +3514,7 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        {
                Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
                loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
+               loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
                loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
                loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
                loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;