]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_alias.c
IQM loading fixes and optimizations
[xonotic/darkplaces.git] / model_alias.c
index d1c336b691ed7378f7c75092f806bccc2ee62478..6c3a83ebb790bf755d88bd88ae35519187f358f4 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)
-                       Mem_Free(bonepose);
-               maxbonepose = model->num_bones*2 + model->surfmesh.num_blends;
-               bonepose = (float (*)[12])Mem_Alloc(r_main_mempool, 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
@@ -942,7 +785,7 @@ static void Mod_BuildAliasSkinFromSkinFrame(texture_t *texture, skinframe_t *ski
        if (texture->currentskinframe->hasalpha)
                texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
        texture->currentmaterialflags = texture->basematerialflags;
-       texture->offsetmapping = OFFSETMAPPING_OFF;
+       texture->offsetmapping = OFFSETMAPPING_DEFAULT;
        texture->offsetscale = 1;
        texture->specularscalemod = 1;
        texture->specularpowermod = 1;
@@ -955,7 +798,10 @@ static void Mod_BuildAliasSkinFromSkinFrame(texture_t *texture, skinframe_t *ski
 void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, const char *meshname, const char *shadername)
 {
        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]
@@ -968,7 +814,10 @@ void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, con
                                // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
                                if (!strcmp(skinfileitem->name, meshname))
                                {
-                                       Mod_LoadTextureFromQ3Shader(skin, skinfileitem->replacement, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
+                                       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;
                                }
                        }
@@ -976,12 +825,19 @@ 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
-               Mod_LoadTextureFromQ3Shader(skin, shadername, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
+       {
+               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);
+       }
 }
 
 #define BOUNDI(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%d exceeds %d - %d)", loadmodel->name, VALUE, MIN, MAX);
@@ -1035,6 +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;
@@ -1196,9 +1053,13 @@ 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();
 
@@ -1323,8 +1184,9 @@ void Mod_IDP0_Load(dp_model_t *mod, void *buffer, void *bufferend)
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -1414,14 +1276,17 @@ 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;
 
@@ -1565,7 +1430,8 @@ 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();
 
@@ -1580,8 +1446,9 @@ void Mod_IDP2_Load(dp_model_t *mod, void *buffer, void *bufferend)
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -1690,7 +1557,7 @@ 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);
@@ -1699,11 +1566,16 @@ 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)
+       {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += meshtriangles * sizeof(unsigned short[3]);
+       }
 
        meshvertices = 0;
        meshtriangles = 0;
@@ -1749,7 +1621,8 @@ 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);
@@ -1760,8 +1633,9 @@ void Mod_IDP3_Load(dp_model_t *mod, void *buffer, void *bufferend)
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -1946,14 +1820,17 @@ 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]);
@@ -1963,7 +1840,9 @@ void Mod_ZYMOTICMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->surfmesh.num_blends = 0;
        loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
        if (loadmodel->surfmesh.num_vertices <= 65536)
+       {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
+       }
        loadmodel->data_poses6s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]);
        loadmodel->surfmesh.data_blendweights = NULL;
 
@@ -2124,16 +2003,18 @@ 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;
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -2250,14 +2131,17 @@ 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]);
@@ -2270,7 +2154,9 @@ void Mod_DARKPLACESMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->surfmesh.num_blends = 0;
        loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
        if (meshvertices <= 65536)
+       {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += meshtriangles * sizeof(unsigned short[3]);
+       }
        loadmodel->data_poses6s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]);
        loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Alloc(loadmodel->mempool, meshvertices * sizeof(blendweights_t));
 
@@ -2475,15 +2361,17 @@ 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;
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -2886,13 +2774,16 @@ 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]);
@@ -2905,7 +2796,9 @@ void Mod_PSKMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->surfmesh.num_blends = 0;
        loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
        if (loadmodel->surfmesh.num_vertices <= 65536)
+       {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
+       }
        loadmodel->data_poses6s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]);
        loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(blendweights_t));
 
@@ -3010,7 +2903,7 @@ void Mod_PSKMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                        loadmodel->animscenes[i].firstframe = i;
                        loadmodel->animscenes[i].framecount = 1;
                        loadmodel->animscenes[i].loop = true;
-                       loadmodel->animscenes[i].framerate = 10;
+                       loadmodel->animscenes[i].framerate = anims[index].fps;
                }
        }
 
@@ -3054,17 +2947,19 @@ 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;
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
@@ -3075,31 +2970,48 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
 {
        unsigned char *data;
        const char *text;
-       unsigned char *pbase;
-       iqmheader_t *header;
+       const unsigned char *pbase, *pend;
+       iqmheader_t header;
        skinfile_t *skinfiles;
        int i, j, k, meshvertices, meshtriangles;
-       float *vposition = NULL, *vtexcoord = NULL, *vnormal = NULL, *vtangent = NULL;
-       unsigned char *vblendindexes = NULL, *vblendweights = NULL;
-       iqmjoint_t *joint;
-       iqmanim_t *anim;
-       iqmpose_t *pose;
-       iqmmesh_t *mesh;
-       iqmbounds_t *bounds;
-       iqmvertexarray_t *va;
-       unsigned short *framedata;
        float biggestorigin;
-       const int *inelements;
+       const unsigned int *inelements;
        int *outelements;
-       const float *inversebasepose;
+       const int *inneighbors;
+       int *outneighbors;
        float *outvertex, *outnormal, *outtexcoord, *outsvector, *outtvector;
+       // this pointers into the file data are read only through Little* functions so they can be unaligned memory
+       const float *vnormal = NULL;
+       const float *vposition = NULL;
+       const float *vtangent = NULL;
+       const float *vtexcoord = NULL;
+       const unsigned char *vblendindexes = NULL;
+       const unsigned char *vblendweights = NULL;
+       const unsigned short *framedata = NULL;
+       // temporary memory allocations (because the data in the file may be misaligned)
+       iqmanim_t *anims = NULL;
+       iqmbounds_t *bounds = NULL;
+       iqmjoint1_t *joint1 = NULL;
+       iqmjoint_t *joint = NULL;
+       iqmmesh_t *meshes = NULL;
+       iqmpose1_t *pose1 = NULL;
+       iqmpose_t *pose = NULL;
+       iqmvertexarray_t *vas = NULL;
 
        pbase = (unsigned char *)buffer;
-       header = (iqmheader_t *)buffer;
-       if (memcmp(header->id, "INTERQUAKEMODEL", 16))
+       pend = (unsigned char *)bufferend;
+
+       if (pbase + sizeof(iqmheader_t) > pend)
+               Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model %d", loadmodel->name, pend - pbase);
+
+       // copy struct (otherwise it may be misaligned)
+       // LordHavoc: okay it's definitely not misaligned here, but for consistency...
+       memcpy(&header, pbase, sizeof(iqmheader_t));
+
+       if (memcmp(header.id, "INTERQUAKEMODEL", 16))
                Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model", loadmodel->name);
-       if (LittleLong(header->version) != 0)
-               Host_Error ("Mod_INTERQUAKEMODEL_Load: only version 0 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";
 
@@ -3107,88 +3019,136 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->synctype = ST_RAND;
 
        // byteswap header
-       header->version = LittleLong(header->version);
-       header->filesize = LittleLong(header->filesize);
-       header->flags = LittleLong(header->flags);
-       header->num_text = LittleLong(header->num_text);
-       header->ofs_text = LittleLong(header->ofs_text);
-       header->num_meshes = LittleLong(header->num_meshes);
-       header->ofs_meshes = LittleLong(header->ofs_meshes);
-       header->num_vertexarrays = LittleLong(header->num_vertexarrays);
-       header->num_vertexes = LittleLong(header->num_vertexes);
-       header->ofs_vertexarrays = LittleLong(header->ofs_vertexarrays);
-       header->num_triangles = LittleLong(header->num_triangles);
-       header->ofs_triangles = LittleLong(header->ofs_triangles);
-       header->ofs_neighbors = LittleLong(header->ofs_neighbors);
-       header->num_joints = LittleLong(header->num_joints);
-       header->ofs_joints = LittleLong(header->ofs_joints);
-       header->ofs_inversebasepose = LittleLong(header->ofs_inversebasepose);
-       header->num_poses = LittleLong(header->num_poses);
-       header->ofs_poses = LittleLong(header->ofs_poses);
-       header->num_anims = LittleLong(header->num_anims);
-       header->ofs_anims = LittleLong(header->ofs_anims);
-       header->num_frames = LittleLong(header->num_frames);
-       header->num_framechannels = LittleLong(header->num_framechannels);
-       header->ofs_frames = LittleLong(header->ofs_frames);
-       header->num_comment = LittleLong(header->num_comment);
-       header->ofs_comment = LittleLong(header->ofs_comment);
-       header->num_extensions = LittleLong(header->num_extensions);
-       header->ofs_extensions = LittleLong(header->ofs_extensions);
-
-       if (header->num_triangles < 1 || header->num_vertexes < 3 || header->num_vertexarrays < 1 || header->num_meshes < 1)
+       header.version = LittleLong(header.version);
+       header.filesize = LittleLong(header.filesize);
+       header.flags = LittleLong(header.flags);
+       header.num_text = LittleLong(header.num_text);
+       header.ofs_text = LittleLong(header.ofs_text);
+       header.num_meshes = LittleLong(header.num_meshes);
+       header.ofs_meshes = LittleLong(header.ofs_meshes);
+       header.num_vertexarrays = LittleLong(header.num_vertexarrays);
+       header.num_vertexes = LittleLong(header.num_vertexes);
+       header.ofs_vertexarrays = LittleLong(header.ofs_vertexarrays);
+       header.num_triangles = LittleLong(header.num_triangles);
+       header.ofs_triangles = LittleLong(header.ofs_triangles);
+       header.ofs_neighbors = LittleLong(header.ofs_neighbors);
+       header.num_joints = LittleLong(header.num_joints);
+       header.ofs_joints = LittleLong(header.ofs_joints);
+       header.num_poses = LittleLong(header.num_poses);
+       header.ofs_poses = LittleLong(header.ofs_poses);
+       header.num_anims = LittleLong(header.num_anims);
+       header.ofs_anims = LittleLong(header.ofs_anims);
+       header.num_frames = LittleLong(header.num_frames);
+       header.num_framechannels = LittleLong(header.num_framechannels);
+       header.ofs_frames = LittleLong(header.ofs_frames);
+       header.ofs_bounds = LittleLong(header.ofs_bounds);
+       header.num_comment = LittleLong(header.num_comment);
+       header.ofs_comment = LittleLong(header.ofs_comment);
+       header.num_extensions = LittleLong(header.num_extensions);
+       header.ofs_extensions = LittleLong(header.ofs_extensions);
+
+       if (header.num_triangles < 1 || header.num_vertexes < 3 || header.num_vertexarrays < 1 || header.num_meshes < 1)
        {
                Con_Printf("%s has no geometry\n", loadmodel->name);
                return;
        }
-       if (header->num_frames < 1 || header->num_anims < 1)
+
+       if (header.version == 1)
        {
-               Con_Printf("%s has no animations\n", loadmodel->name);
+               if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint1_t) > pend ||
+                       pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose1_t) > pend)
+               {
+                       Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
+                       return;
+               }
+       }
+       else
+       {
+               if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint_t) > pend ||
+                       pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose_t) > pend)
+               {
+                       Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
+                       return;
+               }
+       }
+       if (pbase + header.ofs_text + header.num_text > pend ||
+               pbase + header.ofs_meshes + header.num_meshes*sizeof(iqmmesh_t) > pend ||
+               pbase + header.ofs_vertexarrays + header.num_vertexarrays*sizeof(iqmvertexarray_t) > pend ||
+               pbase + header.ofs_triangles + header.num_triangles*sizeof(int[3]) > pend ||
+               (header.ofs_neighbors && pbase + header.ofs_neighbors + header.num_triangles*sizeof(int[3]) > pend) ||
+               pbase + header.ofs_anims + header.num_anims*sizeof(iqmanim_t) > pend ||
+               pbase + header.ofs_frames + header.num_frames*header.num_framechannels*sizeof(unsigned short) > pend ||
+               (header.ofs_bounds && pbase + header.ofs_bounds + header.num_frames*sizeof(iqmbounds_t) > pend) ||
+               pbase + header.ofs_comment + header.num_comment > pend)
+       {
+               Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
                return;
        }
 
-       va = (iqmvertexarray_t *)(pbase + header->ofs_vertexarrays);
-       for (i = 0;i < (int)header->num_vertexarrays;i++)
-       {
-               va[i].type = LittleLong(va[i].type);
-               va[i].flags = LittleLong(va[i].flags);
-               va[i].format = LittleLong(va[i].format);
-               va[i].size = LittleLong(va[i].size);
-               va[i].offset = LittleLong(va[i].offset);
-               switch (va[i].type)
+       // copy structs to make them aligned in memory (otherwise we crash on Sparc and PowerPC and others)
+       if (header.num_vertexarrays)
+               vas = (iqmvertexarray_t *)(pbase + header.ofs_vertexarrays);
+       if (header.num_anims)
+               anims = (iqmanim_t *)(pbase + header.ofs_anims);
+       if (header.ofs_bounds)
+               bounds = (iqmbounds_t *)(pbase + header.ofs_bounds);
+       if (header.num_meshes)
+               meshes = (iqmmesh_t *)(pbase + header.ofs_meshes);
+
+       for (i = 0;i < (int)header.num_vertexarrays;i++)
+       {
+               iqmvertexarray_t va;
+               size_t vsize;
+               va.type = LittleLong(vas[i].type);
+               va.flags = LittleLong(vas[i].flags);
+               va.format = LittleLong(vas[i].format);
+               va.size = LittleLong(vas[i].size);
+               va.offset = LittleLong(vas[i].offset);
+               vsize = header.num_vertexes*va.size;
+               switch (va.format)
+               { 
+               case IQM_FLOAT: vsize *= sizeof(float); break;
+               case IQM_UBYTE: vsize *= sizeof(unsigned char); break;
+               default: continue;
+               }
+               if (pbase + va.offset + vsize > pend)
+                       continue;
+               // no need to copy the vertex data for alignment because LittleLong/LittleShort will be invoked on reading them, and the destination is aligned
+               switch (va.type)
                {
                case IQM_POSITION:
-                       if (va[i].format == IQM_FLOAT && va[i].size == 3)
-                               vposition = (float *)(pbase + va[i].offset);
+                       if (va.format == IQM_FLOAT && va.size == 3)
+                               vposition = (const float *)(pbase + va.offset);
                        break;
                case IQM_TEXCOORD:
-                       if (va[i].format == IQM_FLOAT && va[i].size == 2)
-                               vtexcoord = (float *)(pbase + va[i].offset);
+                       if (va.format == IQM_FLOAT && va.size == 2)
+                               vtexcoord = (const float *)(pbase + va.offset);
                        break;
                case IQM_NORMAL:
-                       if (va[i].format == IQM_FLOAT && va[i].size == 3)
-                               vnormal = (float *)(pbase + va[i].offset);
+                       if (va.format == IQM_FLOAT && va.size == 3)
+                               vnormal = (const float *)(pbase + va.offset);
                        break;
                case IQM_TANGENT:
-                       if (va[i].format == IQM_FLOAT && va[i].size == 4)
-                               vtangent = (float *)(pbase + va[i].offset);
+                       if (va.format == IQM_FLOAT && va.size == 4)
+                               vtangent = (const float *)(pbase + va.offset);
                        break;
                case IQM_BLENDINDEXES:
-                       if (va[i].format == IQM_UBYTE && va[i].size == 4)
-                               vblendindexes = (unsigned char *)(pbase + va[i].offset);
+                       if (va.format == IQM_UBYTE && va.size == 4)
+                               vblendindexes = (const unsigned char *)(pbase + va.offset);
                        break;
                case IQM_BLENDWEIGHTS:
-                       if (va[i].format == IQM_UBYTE && va[i].size == 4)
-                               vblendweights = (unsigned char *)(pbase + va[i].offset);
+                       if (va.format == IQM_UBYTE && va.size == 4)
+                               vblendweights = (const unsigned char *)(pbase + va.offset);
                        break;
                }
        }
-       if (!vposition || !vtexcoord || !vblendindexes || !vblendweights)
+       if (header.num_vertexes > 0 && (!vposition || !vtexcoord || ((header.num_frames > 0 || header.num_anims > 0) && (!vblendindexes || !vblendweights))))
        {
                Con_Printf("%s is missing vertex array data\n", loadmodel->name);
                return;
        }
 
-       text = header->num_text && header->ofs_text ? (const char *)(pbase + header->ofs_text) : "";
+       text = header.num_text && header.ofs_text ? (const char *)(pbase + header.ofs_text) : "";
 
        loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
        loadmodel->DrawSky = NULL;
@@ -3211,25 +3171,28 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        if (loadmodel->numskins < 1)
                loadmodel->numskins = 1;
 
-       loadmodel->numframes = header->num_frames;
-       loadmodel->num_bones = header->num_joints;
-       loadmodel->num_poses = loadmodel->numframes;
-       loadmodel->nummodelsurfaces = loadmodel->num_surfaces = header->num_meshes;
+       loadmodel->numframes = max(header.num_anims, 1);
+       loadmodel->num_bones = header.num_joints;
+       loadmodel->num_poses = max(header.num_frames, 1);
+       loadmodel->nummodelsurfaces = loadmodel->num_surfaces = header.num_meshes;
        loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
        loadmodel->num_texturesperskin = loadmodel->num_surfaces;
 
-       meshvertices = header->num_vertexes;
-       meshtriangles = header->num_triangles;
+       meshvertices = header.num_vertexes;
+       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]) + (vblendindexes && vblendweights ? meshvertices * sizeof(unsigned short) : 0) + 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]);
@@ -3239,12 +3202,18 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
        loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
        loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
-       loadmodel->surfmesh.num_blends = 0;
-       loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
+       if (vblendindexes && vblendweights)
+       {
+               loadmodel->surfmesh.num_blends = 0;
+               loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
+       }
        if (meshvertices <= 65536)
+       {
                loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += meshtriangles * sizeof(unsigned short[3]);
+       }
        loadmodel->data_poses6s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[6]);
-       loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Alloc(loadmodel->mempool, meshvertices * sizeof(blendweights_t));
+       if (vblendindexes && vblendweights)
+               loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Alloc(loadmodel->mempool, meshvertices * sizeof(blendweights_t));
 
        for (i = 0;i < loadmodel->numskins;i++)
        {
@@ -3255,134 +3224,280 @@ 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)
        {
-               joint[i].name = LittleLong(joint[i].name);
-               joint[i].parent = LittleLong(joint[i].parent);
-               for (j = 0;j < 3;j++)
+               iqmjoint1_t *injoint1 = (iqmjoint1_t *)(pbase + header.ofs_joints);
+               if (loadmodel->num_bones)
+                       joint1 = (iqmjoint1_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint1_t));
+               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]);
+                       matrix4x4_t relbase, relinvbase, pinvbase, invbase;
+                       joint1[i].name = LittleLong(injoint1[i].name);
+                       joint1[i].parent = LittleLong(injoint1[i].parent);
+                       for (j = 0;j < 3;j++)
+                       {
+                               joint1[i].origin[j] = LittleFloat(injoint1[i].origin[j]);
+                               joint1[i].rotation[j] = LittleFloat(injoint1[i].rotation[j]);
+                               joint1[i].scale[j] = LittleFloat(injoint1[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);
-               if (!header->ofs_inversebasepose)
+       }
+       else
+       {
+               iqmjoint_t *injoint = (iqmjoint_t *)(pbase + header.ofs_joints);
+               if (header.num_joints)
+                       joint = (iqmjoint_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint_t));
+               for (i = 0;i < loadmodel->num_bones;i++)
                {
-                       matrix4x4_t base, invbase;
-                       Matrix4x4_FromDoom3Joint(&base, 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(&invbase, &base);
-                       Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
+                       matrix4x4_t relbase, relinvbase, pinvbase, invbase;
+                       joint[i].name = LittleLong(injoint[i].name);
+                       joint[i].parent = LittleLong(injoint[i].parent);
+                       for (j = 0;j < 3;j++)
+                       {
+                               joint[i].origin[j] = LittleFloat(injoint[i].origin[j]);
+                               joint[i].rotation[j] = LittleFloat(injoint[i].rotation[j]);
+                               joint[i].scale[j] = LittleFloat(injoint[i].scale[j]);
+                       }
+                       joint[i].rotation[3] = LittleFloat(injoint[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
-       anim = (iqmanim_t *) (pbase + header->ofs_anims);
-       for (i = 0;i < (int)header->num_anims;i++)
+       for (i = 0;i < (int)header.num_anims;i++)
+       {
+               iqmanim_t anim;
+               anim.name = LittleLong(anims[i].name);
+               anim.first_frame = LittleLong(anims[i].first_frame);
+               anim.num_frames = LittleLong(anims[i].num_frames);
+               anim.framerate = LittleFloat(anims[i].framerate);
+               anim.flags = LittleLong(anims[i].flags);
+               strlcpy(loadmodel->animscenes[i].name, &text[anim.name], sizeof(loadmodel->animscenes[i].name));
+               loadmodel->animscenes[i].firstframe = anim.first_frame;
+               loadmodel->animscenes[i].framecount = anim.num_frames;
+               loadmodel->animscenes[i].loop = ((anim.flags & IQM_LOOP) != 0);
+               loadmodel->animscenes[i].framerate = anim.framerate;
+       }
+       if (header.num_anims <= 0)
+       {
+               strlcpy(loadmodel->animscenes[0].name, "static", sizeof(loadmodel->animscenes[0].name));
+               loadmodel->animscenes[0].firstframe = 0;
+               loadmodel->animscenes[0].framecount = 1;
+               loadmodel->animscenes[0].loop = true;
+               loadmodel->animscenes[0].framerate = 10;
+       }
+
+       biggestorigin = 0;
+       if (header.version == 1)
        {
-               anim[i].name = LittleLong(anim[i].name);
-               anim[i].first_frame = LittleLong(anim[i].first_frame);
-               anim[i].num_frames = LittleLong(anim[i].num_frames);
-               anim[i].framerate = LittleLong(anim[i].framerate);
-               anim[i].flags = LittleLong(anim[i].flags);
-               for (j = anim[i].first_frame;j < (int)(anim[i].first_frame + anim[i].num_frames);j++)
+               if (header.num_poses)
                {
-                       dpsnprintf(loadmodel->animscenes[j].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", &text[anim[i].name], j - anim[i].first_frame);
-                       loadmodel->animscenes[j].firstframe = j;
-                       loadmodel->animscenes[j].framecount = 1;
-                       loadmodel->animscenes[j].loop = true;
-                       loadmodel->animscenes[j].framerate = 10;
+                       pose1 = (iqmpose1_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose1_t));
+                       memcpy(pose1, pbase + header.ofs_poses, header.num_poses * sizeof(iqmpose1_t));
+               }
+               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);
+               }
+               if (header.num_frames <= 0)
+               {
+                       for (i = 0;i < loadmodel->num_bones;i++)
+                       {
+                               float f;
+                               f = fabs(joint1[i].origin[0]); biggestorigin = max(biggestorigin, f);
+                               f = fabs(joint1[i].origin[1]); biggestorigin = max(biggestorigin, f);
+                               f = fabs(joint1[i].origin[2]); biggestorigin = max(biggestorigin, f);
+                       }
                }
        }
-       
-       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].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]);
-               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);
+       else
+       {
+               if (header.num_poses)
+               {
+                       pose = (iqmpose_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose_t));
+                       memcpy(pose, pbase + header.ofs_poses, header.num_poses * sizeof(iqmpose_t));
+               }
+               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);
+               }
+               if (header.num_frames <= 0)
+               {
+                       for (i = 0;i < loadmodel->num_bones;i++)
+                       {
+                               float f;
+                               f = fabs(joint[i].origin[0]); biggestorigin = max(biggestorigin, f);
+                               f = fabs(joint[i].origin[1]); biggestorigin = max(biggestorigin, f);
+                               f = fabs(joint[i].origin[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++)      
+       // this unaligned memory access is safe (LittleShort reads as bytes)
+       framedata = (const unsigned short *)(pbase + header.ofs_frames);
+       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));
+                       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++;
+                       }
+               }
+               if (header.num_frames <= 0)
+               {
+                       for (i = 0;i < loadmodel->num_bones;i++)
+                       {
+                               loadmodel->data_poses6s[i*6 + 0] = loadmodel->num_poseinvscale * joint1[i].origin[0];
+                               loadmodel->data_poses6s[i*6 + 1] = loadmodel->num_poseinvscale * joint1[i].origin[1];
+                               loadmodel->data_poses6s[i*6 + 2] = loadmodel->num_poseinvscale * joint1[i].origin[2];
+                               loadmodel->data_poses6s[i*6 + 3] = 32767.0f * joint1[i].rotation[0];
+                               loadmodel->data_poses6s[i*6 + 4] = 32767.0f * joint1[i].rotation[1];
+                               loadmodel->data_poses6s[i*6 + 5] = 32767.0f * joint1[i].rotation[2];
+                       }
                }
        }
-
-       if (header->ofs_inversebasepose)
+       else
        {
-               inversebasepose = (const float *) (pbase + header->ofs_inversebasepose);
-               for (i = 0;i < 12*(int)header->num_poses;i++)   
-                       loadmodel->data_baseboneposeinverse[i] = LittleFloat(inversebasepose[i]);
+               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++;
+                       }
+               }
+               if (header.num_frames <= 0)
+               {
+                       for (i = 0;i < loadmodel->num_bones;i++)
+                       {
+                               loadmodel->data_poses6s[i*6 + 0] = loadmodel->num_poseinvscale * joint[i].origin[0];
+                               loadmodel->data_poses6s[i*6 + 1] = loadmodel->num_poseinvscale * joint[i].origin[1];
+                               loadmodel->data_poses6s[i*6 + 2] = loadmodel->num_poseinvscale * joint[i].origin[2];
+                               loadmodel->data_poses6s[i*6 + 3] = 32767.0f * joint[i].rotation[0];
+                               loadmodel->data_poses6s[i*6 + 4] = 32767.0f * joint[i].rotation[1];
+                               loadmodel->data_poses6s[i*6 + 5] = 32767.0f * joint[i].rotation[2];
+                       }
+               }
        }
+
        // load bounding box data
-       if (header->ofs_bounds)
+       if (header.ofs_bounds)
        {
                float xyradius = 0, radius = 0;
-               bounds = (iqmbounds_t *) (pbase + header->ofs_bounds);
                VectorClear(loadmodel->normalmins);
                VectorClear(loadmodel->normalmaxs);
-               for (i = 0; i < (int)header->num_frames;i++)
-               {
-                       bounds[i].mins[0] = LittleFloat(bounds[i].mins[0]);
-                       bounds[i].mins[1] = LittleFloat(bounds[i].mins[1]);
-                       bounds[i].mins[2] = LittleFloat(bounds[i].mins[2]);
-                       bounds[i].maxs[0] = LittleFloat(bounds[i].maxs[0]);                     
-                       bounds[i].maxs[1] = LittleFloat(bounds[i].maxs[1]);     
-                       bounds[i].maxs[2] = LittleFloat(bounds[i].maxs[2]);     
-                       bounds[i].xyradius = LittleFloat(bounds[i].xyradius);
-                       bounds[i].radius = LittleFloat(bounds[i].radius);
+               for (i = 0; i < (int)header.num_frames;i++)
+               {
+                       iqmbounds_t bound;
+                       bound.mins[0] = LittleFloat(bounds[i].mins[0]);
+                       bound.mins[1] = LittleFloat(bounds[i].mins[1]);
+                       bound.mins[2] = LittleFloat(bounds[i].mins[2]);
+                       bound.maxs[0] = LittleFloat(bounds[i].maxs[0]);                 
+                       bound.maxs[1] = LittleFloat(bounds[i].maxs[1]); 
+                       bound.maxs[2] = LittleFloat(bounds[i].maxs[2]); 
+                       bound.xyradius = LittleFloat(bounds[i].xyradius);
+                       bound.radius = LittleFloat(bounds[i].radius);
                        if (!i)
                        {
-                               VectorCopy(bounds[i].mins, loadmodel->normalmins);
-                               VectorCopy(bounds[i].maxs, loadmodel->normalmaxs);
+                               VectorCopy(bound.mins, loadmodel->normalmins);
+                               VectorCopy(bound.maxs, loadmodel->normalmaxs);
                        }
                        else
                        {
-                               if (loadmodel->normalmins[0] > bounds[i].mins[0]) loadmodel->normalmins[0] = bounds[i].mins[0];
-                               if (loadmodel->normalmins[1] > bounds[i].mins[1]) loadmodel->normalmins[1] = bounds[i].mins[1];
-                               if (loadmodel->normalmins[2] > bounds[i].mins[2]) loadmodel->normalmins[2] = bounds[i].mins[2];
-                               if (loadmodel->normalmaxs[0] < bounds[i].maxs[0]) loadmodel->normalmaxs[0] = bounds[i].maxs[0];
-                               if (loadmodel->normalmaxs[1] < bounds[i].maxs[1]) loadmodel->normalmaxs[1] = bounds[i].maxs[1];
-                               if (loadmodel->normalmaxs[2] < bounds[i].maxs[2]) loadmodel->normalmaxs[2] = bounds[i].maxs[2];
+                               if (loadmodel->normalmins[0] > bound.mins[0]) loadmodel->normalmins[0] = bound.mins[0];
+                               if (loadmodel->normalmins[1] > bound.mins[1]) loadmodel->normalmins[1] = bound.mins[1];
+                               if (loadmodel->normalmins[2] > bound.mins[2]) loadmodel->normalmins[2] = bound.mins[2];
+                               if (loadmodel->normalmaxs[0] < bound.maxs[0]) loadmodel->normalmaxs[0] = bound.maxs[0];
+                               if (loadmodel->normalmaxs[1] < bound.maxs[1]) loadmodel->normalmaxs[1] = bound.maxs[1];
+                               if (loadmodel->normalmaxs[2] < bound.maxs[2]) loadmodel->normalmaxs[2] = bound.maxs[2];
                        }
-                       if (bounds[i].xyradius > xyradius)
-                               xyradius = bounds[i].xyradius;
-                       if (bounds[i].radius > radius)
-                               radius = bounds[i].radius;
+                       if (bound.xyradius > xyradius)
+                               xyradius = bound.xyradius;
+                       if (bound.radius > radius)
+                               radius = bound.radius;
                }
                loadmodel->yawmins[0] = loadmodel->yawmins[1] = -xyradius;
                loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = xyradius;
@@ -3395,35 +3510,38 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        }
 
        // load triangle data
-       inelements = (const int *) (pbase + header->ofs_triangles);
+       // this unaligned memory access is safe (LittleLong reads as bytes)
+       inelements = (const unsigned int *)(pbase + header.ofs_triangles);
        outelements = loadmodel->surfmesh.data_element3i;
-       for (i = 0;i < (int)header->num_triangles;i++)
+       for (i = 0;i < (int)header.num_triangles;i++)
        {
-               outelements[0] = LittleLong(inelements[0]);             
+               outelements[0] = LittleLong(inelements[0]);
                outelements[1] = LittleLong(inelements[1]);
                outelements[2] = LittleLong(inelements[2]);
                outelements += 3;
                inelements += 3;
        }
-       Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, header->num_vertexes, __FILE__, __LINE__);
+       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;
-               for (i = 0;i < (int)header->num_triangles;i++)
+               // this unaligned memory access is safe (LittleLong reads as bytes)
+               inneighbors = (const int *)(pbase + header.ofs_neighbors);
+               outneighbors = loadmodel->surfmesh.data_neighbor3i;
+               for (i = 0;i < (int)header.num_triangles;i++)
                {
-                       outelements[0] = LittleLong(inelements[0]);
-                       outelements[1] = LittleLong(inelements[1]);
-                       outelements[2] = LittleLong(inelements[2]);
-                       outelements += 3;
-                       inelements += 3;
+                       outneighbors[0] = LittleLong(inneighbors[0]);
+                       outneighbors[1] = LittleLong(inneighbors[1]);
+                       outneighbors[2] = LittleLong(inneighbors[2]);
+                       outneighbors += 3;
+                       inneighbors += 3;
                }
        }
 
        // load vertex data
+       // this unaligned memory access is safe (LittleFloat reads as bytes)
        outvertex = loadmodel->surfmesh.data_vertex3f;
-       for (i = 0;i < (int)header->num_vertexes;i++)
+       for (i = 0;i < (int)header.num_vertexes;i++)
        {
                outvertex[0] = LittleFloat(vposition[0]);
                outvertex[1] = LittleFloat(vposition[1]);
@@ -3433,7 +3551,8 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
        }
 
        outtexcoord = loadmodel->surfmesh.data_texcoordtexture2f;
-       for (i = 0;i < (int)header->num_vertexes;i++)
+       // this unaligned memory access is safe (LittleFloat reads as bytes)
+       for (i = 0;i < (int)header.num_vertexes;i++)
        {
                outtexcoord[0] = LittleFloat(vtexcoord[0]);
                outtexcoord[1] = LittleFloat(vtexcoord[1]);
@@ -3441,10 +3560,11 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                outtexcoord += 2;
        }
 
+       // this unaligned memory access is safe (LittleFloat reads as bytes)
        if(vnormal)
        {
                outnormal = loadmodel->surfmesh.data_normal3f;
-               for (i = 0;i < (int)header->num_vertexes;i++)
+               for (i = 0;i < (int)header.num_vertexes;i++)
                {
                        outnormal[0] = LittleFloat(vnormal[0]);
                        outnormal[1] = LittleFloat(vnormal[1]);
@@ -3454,12 +3574,13 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                }
        }
 
+       // this unaligned memory access is safe (LittleFloat reads as bytes)
        if(vnormal && vtangent)
        {
                outnormal = loadmodel->surfmesh.data_normal3f;
                outsvector = loadmodel->surfmesh.data_svector3f;
                outtvector = loadmodel->surfmesh.data_tvector3f;
-               for (i = 0;i < (int)header->num_vertexes;i++)
+               for (i = 0;i < (int)header.num_vertexes;i++)
                {
                        outsvector[0] = LittleFloat(vtangent[0]);
                        outsvector[1] = LittleFloat(vtangent[1]);
@@ -3475,36 +3596,40 @@ void Mod_INTERQUAKEMODEL_Load(dp_model_t *mod, void *buffer, void *bufferend)
                }
        }
 
-       for (i = 0; i < (int)header->num_vertexes;i++)
+       // this unaligned memory access is safe (all bytes)
+       if (vblendindexes && vblendweights)
        {
-               blendweights_t weights;
-               memcpy(weights.index, vblendindexes + i*4, 4);
-               memcpy(weights.influence, vblendweights + i*4, 4);
-               loadmodel->surfmesh.blends[i] = Mod_Skeletal_AddBlend(loadmodel, &weights);
+               for (i = 0; i < (int)header.num_vertexes;i++)
+               {
+                       blendweights_t weights;
+                       memcpy(weights.index, vblendindexes + i*4, 4);
+                       memcpy(weights.influence, vblendweights + i*4, 4);
+                       loadmodel->surfmesh.blends[i] = Mod_Skeletal_AddBlend(loadmodel, &weights);
+               }
        }
 
        // load meshes
-       mesh = (iqmmesh_t *) (pbase + header->ofs_meshes);
-       for (i = 0;i < (int)header->num_meshes;i++)
+       for (i = 0;i < (int)header.num_meshes;i++)
        {
+               iqmmesh_t mesh;
                msurface_t *surface;
 
-               mesh[i].name = LittleLong(mesh[i].name);
-               mesh[i].material = LittleLong(mesh[i].material);
-               mesh[i].first_vertex = LittleLong(mesh[i].first_vertex);
-               mesh[i].num_vertexes = LittleLong(mesh[i].num_vertexes);
-               mesh[i].first_triangle = LittleLong(mesh[i].first_triangle);
-               mesh[i].num_triangles = LittleLong(mesh[i].num_triangles);
+               mesh.name = LittleLong(meshes[i].name);
+               mesh.material = LittleLong(meshes[i].material);
+               mesh.first_vertex = LittleLong(meshes[i].first_vertex);
+               mesh.num_vertexes = LittleLong(meshes[i].num_vertexes);
+               mesh.first_triangle = LittleLong(meshes[i].first_triangle);
+               mesh.num_triangles = LittleLong(meshes[i].num_triangles);
 
                loadmodel->sortedmodelsurfaces[i] = i;
                surface = loadmodel->data_surfaces + i;
                surface->texture = loadmodel->data_textures + i;
-               surface->num_firsttriangle = mesh[i].first_triangle;
-               surface->num_triangles = mesh[i].num_triangles;
-               surface->num_firstvertex = mesh[i].first_vertex;
-               surface->num_vertices = mesh[i].num_vertexes;
+               surface->num_firsttriangle = mesh.first_triangle;
+               surface->num_triangles = mesh.num_triangles;
+               surface->num_firstvertex = mesh.first_vertex;
+               surface->num_vertices = mesh.num_vertexes;
 
-               Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, &text[mesh[i].name], &text[mesh[i].material]);
+               Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, &text[mesh.name], &text[mesh.material]);
        }
 
        Mod_FreeSkinFiles(skinfiles);
@@ -3515,24 +3640,28 @@ 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)
+       if (!header.ofs_bounds)
                Mod_Alias_CalculateBoundingBox();
 
        loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
 
        if (!loadmodel->surfmesh.isanimated)
        {
-               Mod_MakeCollisionBIH(loadmodel, true);
+               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;
        }
-}
 
-                       
+       if (joint        ) Mem_Free(joint        );joint         = NULL;
+       if (joint1       ) Mem_Free(joint1       );joint1        = NULL;
+       if (pose         ) Mem_Free(pose         );pose          = NULL;
+       if (pose1        ) Mem_Free(pose1        );pose1         = NULL;
+}