model_alias.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "mod_skeletal_animatevertices_generic.h"
  25 #ifdef SSE_POSSIBLE
  26 #include "mod_skeletal_animatevertices_sse.h"
  27 #endif
  28
  29 #ifdef SSE_POSSIBLE
  30 static qbool r_skeletal_use_sse_defined = false;
  31 cvar_t r_skeletal_use_sse = {CF_CLIENT, "r_skeletal_use_sse", "1", "use SSE for skeletal model animation"};
  32 #endif
  33 cvar_t r_skeletal_debugbone = {CF_CLIENT, "r_skeletal_debugbone", "-1", "development cvar for testing skeletal model code"};
  34 cvar_t r_skeletal_debugbonecomponent = {CF_CLIENT, "r_skeletal_debugbonecomponent", "3", "development cvar for testing skeletal model code"};
  35 cvar_t r_skeletal_debugbonevalue = {CF_CLIENT, "r_skeletal_debugbonevalue", "100", "development cvar for testing skeletal model code"};
  36 cvar_t r_skeletal_debugtranslatex = {CF_CLIENT, "r_skeletal_debugtranslatex", "1", "development cvar for testing skeletal model code"};
  37 cvar_t r_skeletal_debugtranslatey = {CF_CLIENT, "r_skeletal_debugtranslatey", "1", "development cvar for testing skeletal model code"};
  38 cvar_t r_skeletal_debugtranslatez = {CF_CLIENT, "r_skeletal_debugtranslatez", "1", "development cvar for testing skeletal model code"};
  39 cvar_t mod_alias_supporttagscale = {CF_CLIENT | CF_SERVER, "mod_alias_supporttagscale", "1", "support scaling factors in bone/tag attachment matrices as supported by MD3"};
  40 cvar_t mod_alias_force_animated = {CF_CLIENT | CF_SERVER, "mod_alias_force_animated", "", "if set to an non-empty string, overrides the is-animated flag of any alias models (for benchmarking)"};
  41
  42 float mod_md3_sin[320];
  43
  44 static size_t Mod_Skeletal_AnimateVertices_maxbonepose = 0;
  45 static void *Mod_Skeletal_AnimateVertices_bonepose = NULL;
  46 void Mod_Skeletal_FreeBuffers(void)
  47 {
  48         if(Mod_Skeletal_AnimateVertices_bonepose)
  49                 Mem_Free(Mod_Skeletal_AnimateVertices_bonepose);
  50         Mod_Skeletal_AnimateVertices_maxbonepose = 0;
  51         Mod_Skeletal_AnimateVertices_bonepose = NULL;
  52 }
  53 void *Mod_Skeletal_AnimateVertices_AllocBuffers(size_t nbytes)
  54 {
  55         if(Mod_Skeletal_AnimateVertices_maxbonepose < nbytes)
  56         {
  57                 if(Mod_Skeletal_AnimateVertices_bonepose)
  58                         Mem_Free(Mod_Skeletal_AnimateVertices_bonepose);
  59                 Mod_Skeletal_AnimateVertices_bonepose = Z_Malloc(nbytes);
  60                 Mod_Skeletal_AnimateVertices_maxbonepose = nbytes;
  61         }
  62         return Mod_Skeletal_AnimateVertices_bonepose;
  63 }
  64
  65 void Mod_Skeletal_BuildTransforms(const model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT bonepose, float * RESTRICT boneposerelative)
  66 {
  67         int i, blends;
  68         float m[12];
  69
  70         if (!bonepose)
  71                 bonepose = (float * RESTRICT) Mod_Skeletal_AnimateVertices_AllocBuffers(sizeof(float[12]) * model->num_bones);
  72
  73         if (skeleton && !skeleton->relativetransforms)
  74                 skeleton = NULL;
  75
  76         // interpolate matrices
  77         if (skeleton)
  78         {
  79                 for (i = 0;i < model->num_bones;i++)
  80                 {
  81                         Matrix4x4_ToArray12FloatD3D(&skeleton->relativetransforms[i], m);
  82                         if (model->data_bones[i].parent >= 0)
  83                                 R_ConcatTransforms(bonepose + model->data_bones[i].parent * 12, m, bonepose + i * 12);
  84                         else
  85                                 memcpy(bonepose + i * 12, m, sizeof(m));
  86
  87                         // create a relative deformation matrix to describe displacement
  88                         // from the base mesh, which is used by the actual weighting
  89                         R_ConcatTransforms(bonepose + i * 12, model->data_baseboneposeinverse + i * 12, boneposerelative + i * 12);
  90                 }
  91         }
  92         else
  93         {
  94                 for (i = 0;i < model->num_bones;i++)
  95                 {
  96                         // blend by transform each quaternion/translation into a dual-quaternion first, then blending
  97                         const short * RESTRICT firstpose7s = model->data_poses7s + 7 * (frameblend[0].subframe * model->num_bones + i);
  98                         float firstlerp = frameblend[0].lerp,
  99                                 firsttx = firstpose7s[0], firstty = firstpose7s[1], firsttz = firstpose7s[2],
 100                                 rx = firstpose7s[3] * firstlerp,
 101                                 ry = firstpose7s[4] * firstlerp,
 102                                 rz = firstpose7s[5] * firstlerp,
 103                                 rw = firstpose7s[6] * firstlerp,
 104                                 dx = firsttx*rw + firstty*rz - firsttz*ry,
 105                                 dy = -firsttx*rz + firstty*rw + firsttz*rx,
 106                                 dz = firsttx*ry - firstty*rx + firsttz*rw,
 107                                 dw = -firsttx*rx - firstty*ry - firsttz*rz,
 108                                 scale, sx, sy, sz, sw;
 109                         for (blends = 1;blends < MAX_FRAMEBLENDS && frameblend[blends].lerp > 0;blends++)
 110                         {
 111                                 const short * RESTRICT blendpose7s = model->data_poses7s + 7 * (frameblend[blends].subframe * model->num_bones + i);
 112                                 float blendlerp = frameblend[blends].lerp,
 113                                         blendtx = blendpose7s[0], blendty = blendpose7s[1], blendtz = blendpose7s[2],
 114                                         qx = blendpose7s[3], qy = blendpose7s[4], qz = blendpose7s[5], qw = blendpose7s[6];
 115                                 if(rx*qx + ry*qy + rz*qz + rw*qw < 0) blendlerp = -blendlerp;
 116                                 qx *= blendlerp;
 117                                 qy *= blendlerp;
 118                                 qz *= blendlerp;
 119                                 qw *= blendlerp;
 120                                 rx += qx;
 121                                 ry += qy;
 122                                 rz += qz;
 123                                 rw += qw;
 124                                 dx += blendtx*qw + blendty*qz - blendtz*qy;
 125                                 dy += -blendtx*qz + blendty*qw + blendtz*qx;
 126                                 dz += blendtx*qy - blendty*qx + blendtz*qw;
 127                                 dw += -blendtx*qx - blendty*qy - blendtz*qz;
 128                         }
 129                         // generate a matrix from the dual-quaternion, implicitly normalizing it in the process
 130                         scale = 1.0f / (rx*rx + ry*ry + rz*rz + rw*rw);
 131                         sx = rx * scale;
 132                         sy = ry * scale;
 133                         sz = rz * scale;
 134                         sw = rw * scale;
 135                         m[0] = sw*rw + sx*rx - sy*ry - sz*rz;
 136                         m[1] = 2*(sx*ry - sw*rz);
 137                         m[2] = 2*(sx*rz + sw*ry);
 138                         m[3] = model->num_posescale*(dx*sw - dy*sz + dz*sy - dw*sx);
 139                         m[4] = 2*(sx*ry + sw*rz);
 140                         m[5] = sw*rw + sy*ry - sx*rx - sz*rz;
 141                         m[6] = 2*(sy*rz - sw*rx);
 142                         m[7] = model->num_posescale*(dx*sz + dy*sw - dz*sx - dw*sy);
 143                         m[8] = 2*(sx*rz - sw*ry);
 144                         m[9] = 2*(sy*rz + sw*rx);
 145                         m[10] = sw*rw + sz*rz - sx*rx - sy*ry;
 146                         m[11] = model->num_posescale*(dy*sx + dz*sw - dx*sy - dw*sz);
 147                         if (i == r_skeletal_debugbone.integer)
 148                                 m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
 149                         m[3] *= r_skeletal_debugtranslatex.value;
 150                         m[7] *= r_skeletal_debugtranslatey.value;
 151                         m[11] *= r_skeletal_debugtranslatez.value;
 152                         if (model->data_bones[i].parent >= 0)
 153                                 R_ConcatTransforms(bonepose + model->data_bones[i].parent * 12, m, bonepose + i * 12);
 154                         else
 155                                 memcpy(bonepose + i * 12, m, sizeof(m));
 156                         // create a relative deformation matrix to describe displacement
 157                         // from the base mesh, which is used by the actual weighting
 158                         R_ConcatTransforms(bonepose + i * 12, model->data_baseboneposeinverse + i * 12, boneposerelative + i * 12);
 159                 }
 160         }
 161 }
 162
 163 static void Mod_Skeletal_AnimateVertices(const 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)
 164 {
 165
 166         if (!model->surfmesh.num_vertices)
 167                 return;
 168
 169         if (!model->num_bones)
 170         {
 171                 if (vertex3f) memcpy(vertex3f, model->surfmesh.data_vertex3f, model->surfmesh.num_vertices*sizeof(float[3]));
 172                 if (normal3f) memcpy(normal3f, model->surfmesh.data_normal3f, model->surfmesh.num_vertices*sizeof(float[3]));
 173                 if (svector3f) memcpy(svector3f, model->surfmesh.data_svector3f, model->surfmesh.num_vertices*sizeof(float[3]));
 174                 if (tvector3f) memcpy(tvector3f, model->surfmesh.data_tvector3f, model->surfmesh.num_vertices*sizeof(float[3]));
 175                 return;
 176         }
 177
 178 #ifdef SSE_POSSIBLE
 179         if(r_skeletal_use_sse_defined)
 180                 if(r_skeletal_use_sse.integer)
 181                 {
 182                         Mod_Skeletal_AnimateVertices_SSE(model, frameblend, skeleton, vertex3f, normal3f, svector3f, tvector3f);
 183                         return;
 184                 }
 185 #endif
 186         Mod_Skeletal_AnimateVertices_Generic(model, frameblend, skeleton, vertex3f, normal3f, svector3f, tvector3f);
 187 }
 188
 189 void Mod_AliasInit (void)
 190 {
 191         int i;
 192         Cvar_RegisterVariable(&r_skeletal_debugbone);
 193         Cvar_RegisterVariable(&r_skeletal_debugbonecomponent);
 194         Cvar_RegisterVariable(&r_skeletal_debugbonevalue);
 195         Cvar_RegisterVariable(&r_skeletal_debugtranslatex);
 196         Cvar_RegisterVariable(&r_skeletal_debugtranslatey);
 197         Cvar_RegisterVariable(&r_skeletal_debugtranslatez);
 198         Cvar_RegisterVariable(&mod_alias_supporttagscale);
 199         Cvar_RegisterVariable(&mod_alias_force_animated);
 200         for (i = 0;i < 320;i++)
 201                 mod_md3_sin[i] = sin(i * M_PI * 2.0f / 256.0);
 202 #ifdef SSE_POSSIBLE
 203         if(Sys_HaveSSE())
 204         {
 205                 Con_Printf("Skeletal animation uses SSE code path\n");
 206                 r_skeletal_use_sse_defined = true;
 207                 Cvar_RegisterVariable(&r_skeletal_use_sse);
 208         }
 209         else
 210                 Con_Printf("Skeletal animation uses generic code path (SSE disabled or not detected)\n");
 211 #else
 212         Con_Printf("Skeletal animation uses generic code path (SSE not compiled in)\n");
 213 #endif
 214 }
 215
 216 static int Mod_Skeletal_AddBlend(model_t *model, const blendweights_t *newweights)
 217 {
 218         int i;
 219         blendweights_t *weights;
 220         if(!newweights->influence[1])
 221                 return newweights->index[0];
 222         weights = model->surfmesh.data_blendweights;
 223         for (i = 0;i < model->surfmesh.num_blends;i++, weights++)
 224         {
 225                 if (!memcmp(weights, newweights, sizeof(blendweights_t)))
 226                         return model->num_bones + i;
 227         }
 228         model->surfmesh.num_blends++;
 229         memcpy(weights, newweights, sizeof(blendweights_t));
 230         return model->num_bones + i;
 231 }
 232
 233 static int Mod_Skeletal_CompressBlend(model_t *model, const int *newindex, const float *newinfluence)
 234 {
 235         int i, total;
 236         float scale;
 237         blendweights_t newweights;
 238         if(!newinfluence[1])
 239                 return newindex[0];
 240         scale = 0;
 241         for (i = 0;i < 4;i++)
 242                 scale += newinfluence[i];
 243         scale = 255.0f / scale;
 244         total = 0;
 245         for (i = 0;i < 4;i++)
 246         {
 247                 newweights.index[i] = newindex[i];
 248                 newweights.influence[i] = (unsigned char)(newinfluence[i] * scale);
 249                 total += newweights.influence[i];
 250         }
 251         while (total > 255)
 252         {
 253                 for (i = 0;i < 4;i++)
 254                 {
 255                         if(newweights.influence[i] > 0 && total > 255)
 256                         {
 257                                 newweights.influence[i]--;
 258                                 total--;
 259                         }
 260                 }
 261         }
 262         while (total < 255)
 263         {
 264                 for (i = 0; i < 4;i++)
 265                 {
 266                         if(newweights.influence[i] < 255 && total < 255)
 267                         {
 268                                 newweights.influence[i]++;
 269                                 total++;
 270                         }
 271                 }
 272         }
 273         return Mod_Skeletal_AddBlend(model, &newweights);
 274 }
 275
 276 static void Mod_MD3_AnimateVertices(const 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)
 277 {
 278         // vertex morph
 279         int i, numblends, blendnum;
 280         int numverts = model->surfmesh.num_vertices;
 281         numblends = 0;
 282         for (blendnum = 0;blendnum < MAX_FRAMEBLENDS;blendnum++)
 283         {
 284                 //VectorMA(translate, model->surfmesh.num_morphmdlframetranslate, frameblend[blendnum].lerp, translate);
 285                 if (frameblend[blendnum].lerp > 0)
 286                         numblends = blendnum + 1;
 287         }
 288         // special case for the first blend because it avoids some adds and the need to memset the arrays first
 289         for (blendnum = 0;blendnum < numblends;blendnum++)
 290         {
 291                 const md3vertex_t *verts = model->surfmesh.data_morphmd3vertex + numverts * frameblend[blendnum].subframe;
 292                 if (vertex3f)
 293                 {
 294                         float scale = frameblend[blendnum].lerp * (1.0f / 64.0f);
 295                         if (blendnum == 0)
 296                         {
 297                                 for (i = 0;i < numverts;i++)
 298                                 {
 299                                         vertex3f[i * 3 + 0] = verts[i].origin[0] * scale;
 300                                         vertex3f[i * 3 + 1] = verts[i].origin[1] * scale;
 301                                         vertex3f[i * 3 + 2] = verts[i].origin[2] * scale;
 302                                 }
 303                         }
 304                         else
 305                         {
 306                                 for (i = 0;i < numverts;i++)
 307                                 {
 308                                         vertex3f[i * 3 + 0] += verts[i].origin[0] * scale;
 309                                         vertex3f[i * 3 + 1] += verts[i].origin[1] * scale;
 310                                         vertex3f[i * 3 + 2] += verts[i].origin[2] * scale;
 311                                 }
 312                         }
 313                 }
 314                 // the yaw and pitch stored in md3 models are 8bit quantized angles
 315                 // (0-255), and as such a lookup table is very well suited to
 316                 // decoding them, and since cosine is equivalent to sine with an
 317                 // extra 45 degree rotation, this uses one lookup table for both
 318                 // sine and cosine with a +64 bias to get cosine.
 319                 if (normal3f)
 320                 {
 321                         float lerp = frameblend[blendnum].lerp;
 322                         if (blendnum == 0)
 323                         {
 324                                 for (i = 0;i < numverts;i++)
 325                                 {
 326                                         normal3f[i * 3 + 0] = mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
 327                                         normal3f[i * 3 + 1] = mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
 328                                         normal3f[i * 3 + 2] =                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
 329                                 }
 330                         }
 331                         else
 332                         {
 333                                 for (i = 0;i < numverts;i++)
 334                                 {
 335                                         normal3f[i * 3 + 0] += mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
 336                                         normal3f[i * 3 + 1] += mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
 337                                         normal3f[i * 3 + 2] +=                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
 338                                 }
 339                         }
 340                 }
 341                 if (svector3f)
 342                 {
 343                         const texvecvertex_t *texvecvert = model->surfmesh.data_morphtexvecvertex + numverts * frameblend[blendnum].subframe;
 344                         float f = frameblend[blendnum].lerp * (1.0f / 127.0f);
 345                         if (blendnum == 0)
 346                         {
 347                                 for (i = 0;i < numverts;i++, texvecvert++)
 348                                 {
 349                                         VectorScale(texvecvert->svec, f, svector3f + i*3);
 350                                         VectorScale(texvecvert->tvec, f, tvector3f + i*3);
 351                                 }
 352                         }
 353                         else
 354                         {
 355                                 for (i = 0;i < numverts;i++, texvecvert++)
 356                                 {
 357                                         VectorMA(svector3f + i*3, f, texvecvert->svec, svector3f + i*3);
 358                                         VectorMA(tvector3f + i*3, f, texvecvert->tvec, tvector3f + i*3);
 359                                 }
 360                         }
 361                 }
 362         }
 363 }
 364 static void Mod_MDL_AnimateVertices(const 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)
 365 {
 366         // vertex morph
 367         int i, numblends, blendnum;
 368         int numverts = model->surfmesh.num_vertices;
 369         float translate[3];
 370         VectorClear(translate);
 371         numblends = 0;
 372         // blend the frame translates to avoid redundantly doing so on each vertex
 373         // (a bit of a brain twister but it works)
 374         for (blendnum = 0;blendnum < MAX_FRAMEBLENDS;blendnum++)
 375         {
 376                 if (model->surfmesh.data_morphmd2framesize6f)
 377                         VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].subframe * 6 + 3, translate);
 378                 else
 379                         VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.num_morphmdlframetranslate, translate);
 380                 if (frameblend[blendnum].lerp > 0)
 381                         numblends = blendnum + 1;
 382         }
 383         // special case for the first blend because it avoids some adds and the need to memset the arrays first
 384         for (blendnum = 0;blendnum < numblends;blendnum++)
 385         {
 386                 const trivertx_t *verts = model->surfmesh.data_morphmdlvertex + numverts * frameblend[blendnum].subframe;
 387                 if (vertex3f)
 388                 {
 389                         float scale[3];
 390                         if (model->surfmesh.data_morphmd2framesize6f)
 391                                 VectorScale(model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].subframe * 6, frameblend[blendnum].lerp, scale);
 392                         else
 393                                 VectorScale(model->surfmesh.num_morphmdlframescale, frameblend[blendnum].lerp, scale);
 394                         if (blendnum == 0)
 395                         {
 396                                 for (i = 0;i < numverts;i++)
 397                                 {
 398                                         vertex3f[i * 3 + 0] = translate[0] + verts[i].v[0] * scale[0];
 399                                         vertex3f[i * 3 + 1] = translate[1] + verts[i].v[1] * scale[1];
 400                                         vertex3f[i * 3 + 2] = translate[2] + verts[i].v[2] * scale[2];
 401                                 }
 402                         }
 403                         else
 404                         {
 405                                 for (i = 0;i < numverts;i++)
 406                                 {
 407                                         vertex3f[i * 3 + 0] += verts[i].v[0] * scale[0];
 408                                         vertex3f[i * 3 + 1] += verts[i].v[1] * scale[1];
 409                                         vertex3f[i * 3 + 2] += verts[i].v[2] * scale[2];
 410                                 }
 411                         }
 412                 }
 413                 // the vertex normals in mdl models are an index into a table of
 414                 // 162 unique values, this very crude quantization reduces the
 415                 // vertex normal to only one byte, which saves a lot of space but
 416                 // also makes lighting pretty coarse
 417                 if (normal3f)
 418                 {
 419                         float lerp = frameblend[blendnum].lerp;
 420                         if (blendnum == 0)
 421                         {
 422                                 for (i = 0;i < numverts;i++)
 423                                 {
 424                                         const float *vn = m_bytenormals[verts[i].lightnormalindex];
 425                                         VectorScale(vn, lerp, normal3f + i*3);
 426                                 }
 427                         }
 428                         else
 429                         {
 430                                 for (i = 0;i < numverts;i++)
 431                                 {
 432                                         const float *vn = m_bytenormals[verts[i].lightnormalindex];
 433                                         VectorMA(normal3f + i*3, lerp, vn, normal3f + i*3);
 434                                 }
 435                         }
 436                 }
 437                 if (svector3f)
 438                 {
 439                         const texvecvertex_t *texvecvert = model->surfmesh.data_morphtexvecvertex + numverts * frameblend[blendnum].subframe;
 440                         float f = frameblend[blendnum].lerp * (1.0f / 127.0f);
 441                         if (blendnum == 0)
 442                         {
 443                                 for (i = 0;i < numverts;i++, texvecvert++)
 444                                 {
 445                                         VectorScale(texvecvert->svec, f, svector3f + i*3);
 446                                         VectorScale(texvecvert->tvec, f, tvector3f + i*3);
 447                                 }
 448                         }
 449                         else
 450                         {
 451                                 for (i = 0;i < numverts;i++, texvecvert++)
 452                                 {
 453                                         VectorMA(svector3f + i*3, f, texvecvert->svec, svector3f + i*3);
 454                                         VectorMA(tvector3f + i*3, f, texvecvert->tvec, tvector3f + i*3);
 455                                 }
 456                         }
 457                 }
 458         }
 459 }
 460
 461 int Mod_Alias_GetTagMatrix(const model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, int tagindex, matrix4x4_t *outmatrix)
 462 {
 463         matrix4x4_t temp;
 464         matrix4x4_t parentbonematrix;
 465         matrix4x4_t tempbonematrix;
 466         matrix4x4_t bonematrix;
 467         matrix4x4_t blendmatrix;
 468         int blendindex;
 469         int parenttagindex;
 470         int k;
 471         float lerp;
 472         const float *input;
 473         float blendtag[12];
 474         *outmatrix = identitymatrix;
 475         if (skeleton && skeleton->relativetransforms)
 476         {
 477                 if (tagindex < 0 || tagindex >= skeleton->model->num_bones)
 478                         return 4;
 479                 *outmatrix = skeleton->relativetransforms[tagindex];
 480                 while ((tagindex = model->data_bones[tagindex].parent) >= 0)
 481                 {
 482                         temp = *outmatrix;
 483                         Matrix4x4_Concat(outmatrix, &skeleton->relativetransforms[tagindex], &temp);
 484                 }
 485         }
 486         else if (model->num_bones)
 487         {
 488                 if (tagindex < 0 || tagindex >= model->num_bones)
 489                         return 4;
 490                 Matrix4x4_Clear(&blendmatrix);
 491                 for (blendindex = 0;blendindex < MAX_FRAMEBLENDS && frameblend[blendindex].lerp > 0;blendindex++)
 492                 {
 493                         lerp = frameblend[blendindex].lerp;
 494                         Matrix4x4_FromBonePose7s(&bonematrix, model->num_posescale, model->data_poses7s + 7 * (frameblend[blendindex].subframe * model->num_bones + tagindex));
 495                         parenttagindex = tagindex;
 496                         while ((parenttagindex = model->data_bones[parenttagindex].parent) >= 0)
 497                         {
 498                                 Matrix4x4_FromBonePose7s(&parentbonematrix, model->num_posescale, model->data_poses7s + 7 * (frameblend[blendindex].subframe * model->num_bones + parenttagindex));
 499                                 tempbonematrix = bonematrix;
 500                                 Matrix4x4_Concat(&bonematrix, &parentbonematrix, &tempbonematrix);
 501                         }
 502                         Matrix4x4_Accumulate(&blendmatrix, &bonematrix, lerp);
 503                 }
 504                 *outmatrix = blendmatrix;
 505         }
 506         else if (model->num_tags)
 507         {
 508                 if (tagindex < 0 || tagindex >= model->num_tags)
 509                         return 4;
 510                 for (k = 0;k < 12;k++)
 511                         blendtag[k] = 0;
 512                 for (blendindex = 0;blendindex < MAX_FRAMEBLENDS && frameblend[blendindex].lerp > 0;blendindex++)
 513                 {
 514                         lerp = frameblend[blendindex].lerp;
 515                         input = model->data_tags[frameblend[blendindex].subframe * model->num_tags + tagindex].matrixgl;
 516                         for (k = 0;k < 12;k++)
 517                                 blendtag[k] += input[k] * lerp;
 518                 }
 519                 Matrix4x4_FromArray12FloatGL(outmatrix, blendtag);
 520         }
 521
 522         if(!mod_alias_supporttagscale.integer)
 523                 Matrix4x4_Normalize3(outmatrix, outmatrix);
 524
 525         return 0;
 526 }
 527
 528 int Mod_Alias_GetExtendedTagInfoForIndex(const model_t *model, unsigned int skin, const frameblend_t *frameblend, const skeleton_t *skeleton, int tagindex, int *parentindex, const char **tagname, matrix4x4_t *tag_localmatrix)
 529 {
 530         int blendindex;
 531         int k;
 532         float lerp;
 533         matrix4x4_t bonematrix;
 534         matrix4x4_t blendmatrix;
 535         const float *input;
 536         float blendtag[12];
 537
 538         if (skeleton && skeleton->relativetransforms)
 539         {
 540                 if (tagindex < 0 || tagindex >= skeleton->model->num_bones)
 541                         return 1;
 542                 *parentindex = skeleton->model->data_bones[tagindex].parent;
 543                 *tagname = skeleton->model->data_bones[tagindex].name;
 544                 *tag_localmatrix = skeleton->relativetransforms[tagindex];
 545                 return 0;
 546         }
 547         else if (model->num_bones)
 548         {
 549                 if (tagindex < 0 || tagindex >= model->num_bones)
 550                         return 1;
 551                 *parentindex = model->data_bones[tagindex].parent;
 552                 *tagname = model->data_bones[tagindex].name;
 553                 Matrix4x4_Clear(&blendmatrix);
 554                 for (blendindex = 0;blendindex < MAX_FRAMEBLENDS && frameblend[blendindex].lerp > 0;blendindex++)
 555                 {
 556                         lerp = frameblend[blendindex].lerp;
 557                         Matrix4x4_FromBonePose7s(&bonematrix, model->num_posescale, model->data_poses7s + 7 * (frameblend[blendindex].subframe * model->num_bones + tagindex));
 558                         Matrix4x4_Accumulate(&blendmatrix, &bonematrix, lerp);
 559                 }
 560                 *tag_localmatrix = blendmatrix;
 561                 return 0;
 562         }
 563         else if (model->num_tags)
 564         {
 565                 if (tagindex < 0 || tagindex >= model->num_tags)
 566                         return 1;
 567                 *parentindex = -1;
 568                 *tagname = model->data_tags[tagindex].name;
 569                 for (k = 0;k < 12;k++)
 570                         blendtag[k] = 0;
 571                 for (blendindex = 0;blendindex < MAX_FRAMEBLENDS && frameblend[blendindex].lerp > 0;blendindex++)
 572                 {
 573                         lerp = frameblend[blendindex].lerp;
 574                         input = model->data_tags[frameblend[blendindex].subframe * model->num_tags + tagindex].matrixgl;
 575                         for (k = 0;k < 12;k++)
 576                                 blendtag[k] += input[k] * lerp;
 577                 }
 578                 Matrix4x4_FromArray12FloatGL(tag_localmatrix, blendtag);
 579                 return 0;
 580         }
 581
 582         return 2;
 583 }
 584
 585 int Mod_Alias_GetTagIndexForName(const model_t *model, unsigned int skin, const char *tagname)
 586 {
 587         int i;
 588         if(skin >= (unsigned int)model->numskins)
 589                 skin = 0;
 590         if (model->num_bones)
 591                 for (i = 0;i < model->num_bones;i++)
 592                         if (!strcasecmp(tagname, model->data_bones[i].name))
 593                                 return i + 1;
 594         if (model->num_tags)
 595                 for (i = 0;i < model->num_tags;i++)
 596                         if (!strcasecmp(tagname, model->data_tags[i].name))
 597                                 return i + 1;
 598         return 0;
 599 }
 600
 601 static void Mod_BuildBaseBonePoses(void)
 602 {
 603         int boneindex;
 604         matrix4x4_t *basebonepose;
 605         float *outinvmatrix = loadmodel->data_baseboneposeinverse;
 606         matrix4x4_t bonematrix;
 607         matrix4x4_t tempbonematrix;
 608         if (!loadmodel->num_bones)
 609                 return;
 610         basebonepose = (matrix4x4_t *)Mem_Alloc(tempmempool, loadmodel->num_bones * sizeof(matrix4x4_t));
 611         for (boneindex = 0;boneindex < loadmodel->num_bones;boneindex++)
 612         {
 613                 Matrix4x4_FromBonePose7s(&bonematrix, loadmodel->num_posescale, loadmodel->data_poses7s + 7 * boneindex);
 614                 if (loadmodel->data_bones[boneindex].parent >= 0)
 615                 {
 616                         tempbonematrix = bonematrix;
 617                         Matrix4x4_Concat(&bonematrix, basebonepose + loadmodel->data_bones[boneindex].parent, &tempbonematrix);
 618                 }
 619                 basebonepose[boneindex] = bonematrix;
 620                 Matrix4x4_Invert_Simple(&tempbonematrix, basebonepose + boneindex);
 621                 Matrix4x4_ToArray12FloatD3D(&tempbonematrix, outinvmatrix + 12*boneindex);
 622         }
 623         Mem_Free(basebonepose);
 624 }
 625
 626 static qbool Mod_Alias_CalculateBoundingBox(void)
 627 {
 628         int vnum;
 629         qbool firstvertex = true;
 630         float dist, yawradius, radius;
 631         float *v;
 632         qbool isanimated = false;
 633         VectorClear(loadmodel->normalmins);
 634         VectorClear(loadmodel->normalmaxs);
 635         yawradius = 0;
 636         radius = 0;
 637         if (loadmodel->AnimateVertices)
 638         {
 639                 float *vertex3f, *refvertex3f;
 640                 frameblend_t frameblend[MAX_FRAMEBLENDS];
 641                 memset(frameblend, 0, sizeof(frameblend));
 642                 frameblend[0].lerp = 1;
 643                 vertex3f = (float *) Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3]) * 2);
 644                 refvertex3f = NULL;
 645                 for (frameblend[0].subframe = 0;frameblend[0].subframe < loadmodel->num_poses;frameblend[0].subframe++)
 646                 {
 647                         loadmodel->AnimateVertices(loadmodel, frameblend, NULL, vertex3f, NULL, NULL, NULL);
 648                         if (!refvertex3f)
 649                         {
 650                                 // make a copy of the first frame for comparing all others
 651                                 refvertex3f = vertex3f + loadmodel->surfmesh.num_vertices * 3;
 652                                 memcpy(refvertex3f, vertex3f, loadmodel->surfmesh.num_vertices * sizeof(float[3]));
 653                         }
 654                         else
 655                         {
 656                                 if (!isanimated && memcmp(refvertex3f, vertex3f, loadmodel->surfmesh.num_vertices * sizeof(float[3])))
 657                                         isanimated = true;
 658                         }
 659                         for (vnum = 0, v = vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
 660                         {
 661                                 if (firstvertex)
 662                                 {
 663                                         firstvertex = false;
 664                                         VectorCopy(v, loadmodel->normalmins);
 665                                         VectorCopy(v, loadmodel->normalmaxs);
 666                                 }
 667                                 else
 668                                 {
 669                                         if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
 670                                         if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
 671                                         if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
 672                                         if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
 673                                         if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
 674                                         if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
 675                                 }
 676                                 dist = v[0] * v[0] + v[1] * v[1];
 677                                 if (yawradius < dist)
 678                                         yawradius = dist;
 679                                 dist += v[2] * v[2];
 680                                 if (radius < dist)
 681                                         radius = dist;
 682                         }
 683                 }
 684                 if (vertex3f)
 685                         Mem_Free(vertex3f);
 686         }
 687         else
 688         {
 689                 for (vnum = 0, v = loadmodel->surfmesh.data_vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
 690                 {
 691                         if (firstvertex)
 692                         {
 693                                 firstvertex = false;
 694                                 VectorCopy(v, loadmodel->normalmins);
 695                                 VectorCopy(v, loadmodel->normalmaxs);
 696                         }
 697                         else
 698                         {
 699                                 if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
 700                                 if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
 701                                 if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
 702                                 if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
 703                                 if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
 704                                 if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
 705                         }
 706                         dist = v[0] * v[0] + v[1] * v[1];
 707                         if (yawradius < dist)
 708                                 yawradius = dist;
 709                         dist += v[2] * v[2];
 710                         if (radius < dist)
 711                                 radius = dist;
 712                 }
 713         }
 714         radius = sqrt(radius);
 715         yawradius = sqrt(yawradius);
 716         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
 717         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
 718         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 719         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 720         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
 721         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
 722         loadmodel->radius = radius;
 723         loadmodel->radius2 = radius * radius;
 724         return isanimated;
 725 }
 726
 727 static void Mod_Alias_MorphMesh_CompileFrames(void)
 728 {
 729         int i, j;
 730         frameblend_t frameblend[MAX_FRAMEBLENDS];
 731         unsigned char *datapointer;
 732         memset(frameblend, 0, sizeof(frameblend));
 733         frameblend[0].lerp = 1;
 734         datapointer = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * (sizeof(float[3]) * 4 + loadmodel->surfmesh.num_morphframes * sizeof(texvecvertex_t)));
 735         loadmodel->surfmesh.data_vertex3f = (float *)datapointer;datapointer += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
 736         loadmodel->surfmesh.data_svector3f = (float *)datapointer;datapointer += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
 737         loadmodel->surfmesh.data_tvector3f = (float *)datapointer;datapointer += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
 738         loadmodel->surfmesh.data_normal3f = (float *)datapointer;datapointer += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
 739         loadmodel->surfmesh.data_morphtexvecvertex = (texvecvertex_t *)datapointer;datapointer += loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices * sizeof(texvecvertex_t);
 740         // this counts down from the last frame to the first so that the final data in surfmesh is for frame zero (which is what the renderer expects to be there)
 741         for (i = loadmodel->surfmesh.num_morphframes-1;i >= 0;i--)
 742         {
 743                 frameblend[0].subframe = i;
 744                 loadmodel->AnimateVertices(loadmodel, frameblend, NULL, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_normal3f, NULL, NULL);
 745                 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);
 746                 // encode the svector and tvector in 3 byte format for permanent storage
 747                 for (j = 0;j < loadmodel->surfmesh.num_vertices;j++)
 748                 {
 749                         VectorScaleCast(loadmodel->surfmesh.data_svector3f + j * 3, 127.0f, signed char, loadmodel->surfmesh.data_morphtexvecvertex[i*loadmodel->surfmesh.num_vertices+j].svec);
 750                         VectorScaleCast(loadmodel->surfmesh.data_tvector3f + j * 3, 127.0f, signed char, loadmodel->surfmesh.data_morphtexvecvertex[i*loadmodel->surfmesh.num_vertices+j].tvec);
 751                 }
 752         }
 753 }
 754
 755 static void Mod_MDLMD2MD3_TraceLine(model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 756 {
 757         int i;
 758         float segmentmins[3], segmentmaxs[3];
 759         msurface_t *surface;
 760         float vertex3fbuf[1024 * 3];
 761         float *vertex3f = vertex3fbuf;
 762         float *freevertex3f = NULL;
 763         // for static cases we can just call CollisionBIH which is much faster
 764         if ((frameblend == NULL || (frameblend[0].subframe == 0 && frameblend[1].lerp == 0)) && (skeleton == NULL || skeleton->relativetransforms == NULL))
 765         {
 766                 Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 767                 return;
 768         }
 769         memset(trace, 0, sizeof(*trace));
 770         trace->fraction = 1;
 771         trace->hitsupercontentsmask = hitsupercontentsmask;
 772         trace->skipsupercontentsmask = skipsupercontentsmask;
 773         trace->skipmaterialflagsmask = skipmaterialflagsmask;
 774         segmentmins[0] = min(start[0], end[0]) - 1;
 775         segmentmins[1] = min(start[1], end[1]) - 1;
 776         segmentmins[2] = min(start[2], end[2]) - 1;
 777         segmentmaxs[0] = max(start[0], end[0]) + 1;
 778         segmentmaxs[1] = max(start[1], end[1]) + 1;
 779         segmentmaxs[2] = max(start[2], end[2]) + 1;
 780         if (frameblend == NULL || frameblend[0].subframe != 0 || frameblend[0].lerp != 0 || skeleton != NULL)
 781         {
 782                 if (model->surfmesh.num_vertices > 1024)
 783                         vertex3f = freevertex3f = (float *)Mem_Alloc(tempmempool, model->surfmesh.num_vertices * sizeof(float[3]));
 784                 model->AnimateVertices(model, frameblend, skeleton, vertex3f, NULL, NULL, NULL);
 785         }
 786         else
 787                 vertex3f = model->surfmesh.data_vertex3f;
 788         for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 789                 Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_triangles, model->surfmesh.data_element3i + 3 * surface->num_firsttriangle, vertex3f, 0, NULL, SUPERCONTENTS_SOLID | (surface->texture->basematerialflags & MATERIALFLAGMASK_TRANSLUCENT ? 0 : SUPERCONTENTS_OPAQUE), 0, surface->texture, segmentmins, segmentmaxs);
 790         if (freevertex3f)
 791                 Mem_Free(freevertex3f);
 792 }
 793
 794 static void Mod_MDLMD2MD3_TraceBox(model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 795 {
 796         int i;
 797         vec3_t shiftstart, shiftend;
 798         float segmentmins[3], segmentmaxs[3];
 799         msurface_t *surface;
 800         float vertex3fbuf[1024*3];
 801         float *vertex3f = vertex3fbuf;
 802         colboxbrushf_t thisbrush_start, thisbrush_end;
 803         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
 804
 805         if (VectorCompare(boxmins, boxmaxs))
 806         {
 807                 VectorAdd(start, boxmins, shiftstart);
 808                 VectorAdd(end, boxmins, shiftend);
 809                 Mod_MDLMD2MD3_TraceLine(model, frameblend, skeleton, trace, shiftstart, shiftend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 810                 VectorSubtract(trace->endpos, boxmins, trace->endpos);
 811                 return;
 812         }
 813
 814         // for static cases we can just call CollisionBIH which is much faster
 815         if ((frameblend == NULL || (frameblend[0].subframe == 0 && frameblend[1].lerp == 0)) && (skeleton == NULL || skeleton->relativetransforms == NULL))
 816         {
 817                 Mod_CollisionBIH_TraceBox(model, frameblend, skeleton, trace, start, boxmins, boxmaxs, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 818                 return;
 819         }
 820
 821         // box trace, performed as brush trace
 822         memset(trace, 0, sizeof(*trace));
 823         trace->fraction = 1;
 824         trace->hitsupercontentsmask = hitsupercontentsmask;
 825         trace->skipsupercontentsmask = skipsupercontentsmask;
 826         trace->skipmaterialflagsmask = skipmaterialflagsmask;
 827         if (model->surfmesh.num_vertices > 1024)
 828                 vertex3f = (float *)Mem_Alloc(tempmempool, model->surfmesh.num_vertices * sizeof(float[3]));
 829         segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
 830         segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
 831         segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
 832         segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
 833         segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
 834         segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
 835         VectorAdd(start, boxmins, boxstartmins);
 836         VectorAdd(start, boxmaxs, boxstartmaxs);
 837         VectorAdd(end, boxmins, boxendmins);
 838         VectorAdd(end, boxmaxs, boxendmaxs);
 839         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
 840         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
 841         model->AnimateVertices(model, frameblend, skeleton, vertex3f, NULL, NULL, NULL);
 842         for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 843                 Collision_TraceBrushTriangleMeshFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, surface->num_triangles, model->surfmesh.data_element3i + 3 * surface->num_firsttriangle, vertex3f, 0, NULL, SUPERCONTENTS_SOLID | (surface->texture->basematerialflags & MATERIALFLAGMASK_TRANSLUCENT ? 0 : SUPERCONTENTS_OPAQUE), 0, surface->texture, segmentmins, segmentmaxs);
 844         if (vertex3f != vertex3fbuf)
 845                 Mem_Free(vertex3f);
 846 }
 847
 848 static void Mod_ConvertAliasVerts (int inverts, trivertx_t *v, trivertx_t *out, int *vertremap)
 849 {
 850         int i, j;
 851         for (i = 0;i < inverts;i++)
 852         {
 853                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
 854                         continue;
 855                 j = vertremap[i]; // not onseam
 856                 if (j >= 0)
 857                         out[j] = v[i];
 858                 j = vertremap[i+inverts]; // onseam
 859                 if (j >= 0)
 860                         out[j] = v[i];
 861         }
 862 }
 863
 864 static void Mod_MDL_LoadFrames (unsigned char* datapointer, int inverts, int *vertremap)
 865 {
 866         int i, f, pose, groupframes;
 867         float interval;
 868         daliasframetype_t *pframetype;
 869         daliasframe_t *pinframe;
 870         daliasgroup_t *group;
 871         daliasinterval_t *intervals;
 872         animscene_t *scene;
 873         pose = 0;
 874         scene = loadmodel->animscenes;
 875         for (f = 0;f < loadmodel->numframes;f++)
 876         {
 877                 pframetype = (daliasframetype_t *)datapointer;
 878                 datapointer += sizeof(daliasframetype_t);
 879                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 880                 {
 881                         // a single frame is still treated as a group
 882                         interval = 0.1f;
 883                         groupframes = 1;
 884                 }
 885                 else
 886                 {
 887                         // read group header
 888                         group = (daliasgroup_t *)datapointer;
 889                         datapointer += sizeof(daliasgroup_t);
 890                         groupframes = LittleLong (group->numframes);
 891
 892                         // intervals (time per frame)
 893                         intervals = (daliasinterval_t *)datapointer;
 894                         datapointer += sizeof(daliasinterval_t) * groupframes;
 895
 896                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 897                         if (interval < 0.01f)
 898                         {
 899                                 Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 900                                 interval = 0.1f;
 901                         }
 902                 }
 903
 904                 // get scene name from first frame
 905                 pinframe = (daliasframe_t *)datapointer;
 906
 907                 dp_strlcpy(scene->name, pinframe->name, sizeof(scene->name));
 908                 scene->firstframe = pose;
 909                 scene->framecount = groupframes;
 910                 scene->framerate = 1.0f / interval;
 911                 scene->loop = true;
 912                 scene++;
 913
 914                 // read frames
 915                 for (i = 0;i < groupframes;i++)
 916                 {
 917                         datapointer += sizeof(daliasframe_t);
 918                         Mod_ConvertAliasVerts(inverts, (trivertx_t *)datapointer, loadmodel->surfmesh.data_morphmdlvertex + pose * loadmodel->surfmesh.num_vertices, vertremap);
 919                         datapointer += sizeof(trivertx_t) * inverts;
 920                         pose++;
 921                 }
 922         }
 923 }
 924
 925 void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, const char *meshname, const char *shadername)
 926 {
 927         int i;
 928         char stripbuf[MAX_QPATH];
 929         skinfileitem_t *skinfileitem;
 930         if(developer_extra.integer)
 931                 Con_DPrintf("Looking up texture for %s (default: %s)\n", meshname, shadername);
 932         if (skinfile)
 933         {
 934                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
 935                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
 936                 {
 937                         memset(skin, 0, sizeof(*skin));
 938                         // see if a mesh
 939                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
 940                         {
 941                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
 942                                 if (!strcmp(skinfileitem->name, meshname))
 943                                 {
 944                                         Image_StripImageExtension(skinfileitem->replacement, stripbuf, sizeof(stripbuf));
 945                                         if(developer_extra.integer)
 946                                                 Con_DPrintf("--> got %s from skin file\n", stripbuf);
 947                                         Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, skin, stripbuf, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
 948                                         break;
 949                                 }
 950                         }
 951                         if (!skinfileitem)
 952                         {
 953                                 // don't render unmentioned meshes
 954                                 Mod_LoadCustomMaterial(loadmodel->mempool, skin, meshname, SUPERCONTENTS_SOLID, MATERIALFLAG_WALL, R_SkinFrame_LoadMissing());
 955                                 if(developer_extra.integer)
 956                                         Con_DPrintf("--> skipping\n");
 957                                 skin->basematerialflags = skin->currentmaterialflags = MATERIALFLAG_NOSHADOW | MATERIALFLAG_NODRAW;
 958                         }
 959                 }
 960         }
 961         else
 962         {
 963                 if(developer_extra.integer)
 964                         Con_DPrintf("--> using default\n");
 965                 Image_StripImageExtension(shadername, stripbuf, sizeof(stripbuf));
 966                 Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, skin, stripbuf, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
 967         }
 968 }
 969 extern cvar_t r_nolerp_list;
 970 #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);
 971 #define BOUNDF(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%f exceeds %f - %f)", loadmodel->name, VALUE, MIN, MAX);
 972 void Mod_IDP0_Load(model_t *mod, void *buffer, void *bufferend)
 973 {
 974         int i, j, version, totalskins, skinwidth, skinheight, groupframes, groupskins, numverts;
 975         float scales, scalet, interval;
 976         msurface_t *surface;
 977         unsigned char *data;
 978         mdl_t *pinmodel;
 979         stvert_t *pinstverts;
 980         dtriangle_t *pintriangles;
 981         daliasskintype_t *pinskintype;
 982         daliasskingroup_t *pinskingroup;
 983         daliasskininterval_t *pinskinintervals;
 984         daliasframetype_t *pinframetype;
 985         daliasgroup_t *pinframegroup;
 986         unsigned char *datapointer, *startframes, *startskins;
 987         char name[MAX_QPATH];
 988         skinframe_t *tempskinframe;
 989         animscene_t *tempskinscenes;
 990         texture_t *tempaliasskins;
 991         float *vertst;
 992         int *vertonseam, *vertremap;
 993         skinfile_t *skinfiles;
 994
 995         datapointer = (unsigned char *)buffer;
 996         pinmodel = (mdl_t *)datapointer;
 997         datapointer += sizeof(mdl_t);
 998
 999         version = LittleLong (pinmodel->version);
1000         if (version != ALIAS_VERSION)
1001                 Host_Error ("%s has wrong version number (%i should be %i)",
1002                                  loadmodel->name, version, ALIAS_VERSION);
1003
1004         loadmodel->modeldatatypestring = "MDL";
1005
1006         loadmodel->type = mod_alias;
1007         loadmodel->Draw = R_Mod_Draw;
1008         loadmodel->DrawDepth = R_Mod_DrawDepth;
1009         loadmodel->DrawDebug = R_Mod_DrawDebug;
1010         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
1011         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
1012         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
1013         loadmodel->DrawLight = R_Mod_DrawLight;
1014         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1015         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
1016         // FIXME add TraceBrush!
1017         loadmodel->PointSuperContents = NULL;
1018         loadmodel->AnimateVertices = Mod_MDL_AnimateVertices;
1019
1020         loadmodel->num_surfaces = 1;
1021         loadmodel->submodelsurfaces_start = 0;
1022         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces;
1023         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int));
1024         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1025         loadmodel->modelsurfaces_sorted = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1026         loadmodel->modelsurfaces_sorted[0] = 0;
1027
1028         loadmodel->numskins = LittleLong(pinmodel->numskins);
1029         BOUNDI(loadmodel->numskins,0,65536);
1030         skinwidth = LittleLong (pinmodel->skinwidth);
1031         BOUNDI(skinwidth,0,65536);
1032         skinheight = LittleLong (pinmodel->skinheight);
1033         BOUNDI(skinheight,0,65536);
1034         numverts = LittleLong(pinmodel->numverts);
1035         BOUNDI(numverts,0,65536);
1036         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->numtris);
1037         BOUNDI(loadmodel->surfmesh.num_triangles,0,65536);
1038         loadmodel->numframes = LittleLong(pinmodel->numframes);
1039         BOUNDI(loadmodel->numframes,0,65536);
1040         loadmodel->synctype = (synctype_t)LittleLong (pinmodel->synctype);
1041         BOUNDI((int)loadmodel->synctype,0,2);
1042         // convert model flags to EF flags (MF_ROCKET becomes EF_ROCKET, etc)
1043         i = LittleLong (pinmodel->flags);
1044         loadmodel->effects = (((unsigned)i & 255) << 24) | (i & 0x00FFFF00);
1045
1046         if (strstr(r_nolerp_list.string, loadmodel->name))
1047                 loadmodel->nolerp = true;
1048
1049         for (i = 0;i < 3;i++)
1050         {
1051                 loadmodel->surfmesh.num_morphmdlframescale[i] = LittleFloat (pinmodel->scale[i]);
1052                 loadmodel->surfmesh.num_morphmdlframetranslate[i] = LittleFloat (pinmodel->scale_origin[i]);
1053         }
1054
1055         startskins = datapointer;
1056         totalskins = 0;
1057         for (i = 0;i < loadmodel->numskins;i++)
1058         {
1059                 pinskintype = (daliasskintype_t *)datapointer;
1060                 datapointer += sizeof(daliasskintype_t);
1061                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
1062                         groupskins = 1;
1063                 else
1064                 {
1065                         pinskingroup = (daliasskingroup_t *)datapointer;
1066                         datapointer += sizeof(daliasskingroup_t);
1067                         groupskins = LittleLong(pinskingroup->numskins);
1068                         datapointer += sizeof(daliasskininterval_t) * groupskins;
1069                 }
1070
1071                 for (j = 0;j < groupskins;j++)
1072                 {
1073                         datapointer += skinwidth * skinheight;
1074                         totalskins++;
1075                 }
1076         }
1077
1078         pinstverts = (stvert_t *)datapointer;
1079         datapointer += sizeof(stvert_t) * numverts;
1080
1081         pintriangles = (dtriangle_t *)datapointer;
1082         datapointer += sizeof(dtriangle_t) * loadmodel->surfmesh.num_triangles;
1083
1084         startframes = datapointer;
1085         loadmodel->surfmesh.num_morphframes = 0;
1086         for (i = 0;i < loadmodel->numframes;i++)
1087         {
1088                 pinframetype = (daliasframetype_t *)datapointer;
1089                 datapointer += sizeof(daliasframetype_t);
1090                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
1091                         groupframes = 1;
1092                 else
1093                 {
1094                         pinframegroup = (daliasgroup_t *)datapointer;
1095                         datapointer += sizeof(daliasgroup_t);
1096                         groupframes = LittleLong(pinframegroup->numframes);
1097                         datapointer += sizeof(daliasinterval_t) * groupframes;
1098                 }
1099
1100                 for (j = 0;j < groupframes;j++)
1101                 {
1102                         datapointer += sizeof(daliasframe_t);
1103                         datapointer += sizeof(trivertx_t) * numverts;
1104                         loadmodel->surfmesh.num_morphframes++;
1105                 }
1106         }
1107         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
1108
1109         // store texture coordinates into temporary array, they will be stored
1110         // after usage is determined (triangle data)
1111         vertst = (float *)Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
1112         vertremap = (int *)Mem_Alloc(tempmempool, numverts * 3 * sizeof(int));
1113         vertonseam = vertremap + numverts * 2;
1114
1115         scales = 1.0 / skinwidth;
1116         scalet = 1.0 / skinheight;
1117         for (i = 0;i < numverts;i++)
1118         {
1119                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
1120                 vertst[i*2+0] = LittleLong(pinstverts[i].s) * scales;
1121                 vertst[i*2+1] = LittleLong(pinstverts[i].t) * scalet;
1122                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
1123                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
1124         }
1125
1126 // load triangle data
1127         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->surfmesh.num_triangles);
1128
1129         // read the triangle elements
1130         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1131                 for (j = 0;j < 3;j++)
1132                         loadmodel->surfmesh.data_element3i[i*3+j] = LittleLong(pintriangles[i].vertindex[j]);
1133         // validate (note numverts is used because this is the original data)
1134         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, NULL, loadmodel->surfmesh.num_triangles, 0, numverts, __FILE__, __LINE__);
1135         // now butcher the elements according to vertonseam and tri->facesfront
1136         // and then compact the vertex set to remove duplicates
1137         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1138                 if (!LittleLong(pintriangles[i].facesfront)) // backface
1139                         for (j = 0;j < 3;j++)
1140                                 if (vertonseam[loadmodel->surfmesh.data_element3i[i*3+j]])
1141                                         loadmodel->surfmesh.data_element3i[i*3+j] += numverts;
1142         // count the usage
1143         // (this uses vertremap to count usage to save some memory)
1144         for (i = 0;i < numverts*2;i++)
1145                 vertremap[i] = 0;
1146         for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
1147                 vertremap[loadmodel->surfmesh.data_element3i[i]]++;
1148         // build remapping table and compact array
1149         loadmodel->surfmesh.num_vertices = 0;
1150         for (i = 0;i < numverts*2;i++)
1151         {
1152                 if (vertremap[i])
1153                 {
1154                         vertremap[i] = loadmodel->surfmesh.num_vertices;
1155                         vertst[loadmodel->surfmesh.num_vertices*2+0] = vertst[i*2+0];
1156                         vertst[loadmodel->surfmesh.num_vertices*2+1] = vertst[i*2+1];
1157                         loadmodel->surfmesh.num_vertices++;
1158                 }
1159                 else
1160                         vertremap[i] = -1; // not used at all
1161         }
1162         // remap the elements to the new vertex set
1163         for (i = 0;i < loadmodel->surfmesh.num_triangles * 3;i++)
1164                 loadmodel->surfmesh.data_element3i[i] = vertremap[loadmodel->surfmesh.data_element3i[i]];
1165         // store the texture coordinates
1166         loadmodel->surfmesh.data_texcoordtexture2f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * loadmodel->surfmesh.num_vertices);
1167         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1168         {
1169                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = vertst[i*2+0];
1170                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = vertst[i*2+1];
1171         }
1172
1173         // generate ushort elements array if possible
1174         if (loadmodel->surfmesh.num_vertices <= 65536)
1175                 loadmodel->surfmesh.data_element3s = (unsigned short *)Mem_Alloc(loadmodel->mempool, sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles);
1176         if (loadmodel->surfmesh.data_element3s)
1177                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
1178                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
1179
1180 // load the frames
1181         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1182         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
1183         Mod_MDL_LoadFrames (startframes, numverts, vertremap);
1184         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
1185         Mod_Alias_MorphMesh_CompileFrames();
1186
1187         Mem_Free(vertst);
1188         Mem_Free(vertremap);
1189
1190         // load the skins
1191         skinfiles = Mod_LoadSkinFiles();
1192         if (skinfiles)
1193         {
1194                 loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
1195                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1196                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1197                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1198                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1199                 Mod_FreeSkinFiles(skinfiles);
1200                 for (i = 0;i < loadmodel->numskins;i++)
1201                 {
1202                         loadmodel->skinscenes[i].firstframe = i;
1203                         loadmodel->skinscenes[i].framecount = 1;
1204                         loadmodel->skinscenes[i].loop = true;
1205                         loadmodel->skinscenes[i].framerate = 10;
1206                 }
1207         }
1208         else
1209         {
1210                 loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
1211                 loadmodel->num_textures = loadmodel->num_surfaces * totalskins;
1212                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1213                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1214                 totalskins = 0;
1215                 datapointer = startskins;
1216                 for (i = 0;i < loadmodel->numskins;i++)
1217                 {
1218                         pinskintype = (daliasskintype_t *)datapointer;
1219                         datapointer += sizeof(daliasskintype_t);
1220
1221                         if (pinskintype->type == ALIAS_SKIN_SINGLE)
1222                         {
1223                                 groupskins = 1;
1224                                 interval = 0.1f;
1225                         }
1226                         else
1227                         {
1228                                 pinskingroup = (daliasskingroup_t *)datapointer;
1229                                 datapointer += sizeof(daliasskingroup_t);
1230
1231                                 groupskins = LittleLong (pinskingroup->numskins);
1232
1233                                 pinskinintervals = (daliasskininterval_t *)datapointer;
1234                                 datapointer += sizeof(daliasskininterval_t) * groupskins;
1235
1236                                 interval = LittleFloat(pinskinintervals[0].interval);
1237                                 if (interval < 0.01f)
1238                                 {
1239                                         Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
1240                                         interval = 0.1f;
1241                                 }
1242                         }
1243
1244                         dpsnprintf(loadmodel->skinscenes[i].name, sizeof(loadmodel->skinscenes[i].name), "skin %i", i);
1245                         loadmodel->skinscenes[i].firstframe = totalskins;
1246                         loadmodel->skinscenes[i].framecount = groupskins;
1247                         loadmodel->skinscenes[i].framerate = 1.0f / interval;
1248                         loadmodel->skinscenes[i].loop = true;
1249
1250                         for (j = 0;j < groupskins;j++)
1251                         {
1252                                 if (groupskins > 1)
1253                                         dpsnprintf (name, sizeof(name), "%s_%i_%i", loadmodel->name, i, j);
1254                                 else
1255                                         dpsnprintf (name, sizeof(name), "%s_%i", loadmodel->name, i);
1256                                 if (!Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + totalskins * loadmodel->num_surfaces, name, false, false, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL))
1257                                         Mod_LoadCustomMaterial(loadmodel->mempool, loadmodel->data_textures + totalskins * loadmodel->num_surfaces, name, SUPERCONTENTS_SOLID, MATERIALFLAG_WALL, R_SkinFrame_LoadInternalQuake(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_PICMIP, true, r_fullbrights.integer, (unsigned char *)datapointer, skinwidth, skinheight));
1258                                 datapointer += skinwidth * skinheight;
1259                                 totalskins++;
1260                         }
1261                 }
1262                 // check for skins that don't exist in the model, but do exist as external images
1263                 // (this was added because yummyluv kept pestering me about support for it)
1264                 // TODO: support shaders here?
1265                 for (;;)
1266                 {
1267                         dpsnprintf(name, sizeof(name), "%s_%i", loadmodel->name, loadmodel->numskins);
1268                         tempskinframe = R_SkinFrame_LoadExternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, false, false);
1269                         if (!tempskinframe)
1270                                 break;
1271                         // expand the arrays to make room
1272                         tempskinscenes = loadmodel->skinscenes;
1273                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
1274                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
1275                         Mem_Free(tempskinscenes);
1276
1277                         tempaliasskins = loadmodel->data_textures;
1278                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
1279                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1280                         Mem_Free(tempaliasskins);
1281
1282                         // store the info about the new skin
1283                         Mod_LoadCustomMaterial(loadmodel->mempool, loadmodel->data_textures + totalskins * loadmodel->num_surfaces, name, SUPERCONTENTS_SOLID, MATERIALFLAG_WALL, tempskinframe);
1284                         dp_strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
1285                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
1286                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
1287                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
1288                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
1289
1290                         //increase skin counts
1291                         loadmodel->num_textures++;
1292                         loadmodel->numskins++;
1293                         totalskins++;
1294
1295                         // fix up the pointers since they are pointing at the old textures array
1296                         // FIXME: this is a hack!
1297                         for (j = 0;j < loadmodel->numskins * loadmodel->num_surfaces;j++)
1298                                 loadmodel->data_textures[j].currentframe = &loadmodel->data_textures[j];
1299                 }
1300         }
1301
1302         surface = loadmodel->data_surfaces;
1303         surface->texture = loadmodel->data_textures;
1304         surface->num_firsttriangle = 0;
1305         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1306         surface->num_firstvertex = 0;
1307         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1308
1309         if(mod_alias_force_animated.string[0])
1310                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
1311
1312         // Always make a BIH for the first frame, we can use it where possible.
1313         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
1314         if (!loadmodel->surfmesh.isanimated)
1315         {
1316                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
1317                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
1318                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
1319                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
1320                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
1321         }
1322 }
1323
1324 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
1325 {
1326         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
1327         float iskinwidth, iskinheight;
1328         unsigned char *data;
1329         msurface_t *surface;
1330         md2_t *pinmodel;
1331         unsigned char *base, *datapointer;
1332         md2frame_t *pinframe;
1333         char *inskin;
1334         md2triangle_t *intri;
1335         unsigned short *inst;
1336         struct md2verthash_s
1337         {
1338                 struct md2verthash_s *next;
1339                 unsigned short xyz;
1340                 unsigned short st;
1341         }
1342         *hash, **md2verthash, *md2verthashdata;
1343         skinfile_t *skinfiles;
1344
1345         pinmodel = (md2_t *)buffer;
1346         base = (unsigned char *)buffer;
1347
1348         version = LittleLong (pinmodel->version);
1349         if (version != MD2ALIAS_VERSION)
1350                 Host_Error ("%s has wrong version number (%i should be %i)",
1351                         loadmodel->name, version, MD2ALIAS_VERSION);
1352
1353         loadmodel->modeldatatypestring = "MD2";
1354
1355         loadmodel->type = mod_alias;
1356         loadmodel->Draw = R_Mod_Draw;
1357         loadmodel->DrawDepth = R_Mod_DrawDepth;
1358         loadmodel->DrawDebug = R_Mod_DrawDebug;
1359         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
1360         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
1361         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
1362         loadmodel->DrawLight = R_Mod_DrawLight;
1363         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1364         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
1365         loadmodel->PointSuperContents = NULL;
1366         loadmodel->AnimateVertices = Mod_MDL_AnimateVertices;
1367
1368         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
1369                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
1370         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
1371                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
1372         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
1373                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
1374         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
1375                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
1376
1377         end = LittleLong(pinmodel->ofs_end);
1378         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
1379                 Host_Error ("%s is not a valid model", loadmodel->name);
1380         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
1381                 Host_Error ("%s is not a valid model", loadmodel->name);
1382         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
1383                 Host_Error ("%s is not a valid model", loadmodel->name);
1384         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
1385                 Host_Error ("%s is not a valid model", loadmodel->name);
1386         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
1387                 Host_Error ("%s is not a valid model", loadmodel->name);
1388
1389         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1390         numxyz = LittleLong(pinmodel->num_xyz);
1391         numst = LittleLong(pinmodel->num_st);
1392         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1393         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1394         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1395         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
1396         skinwidth = LittleLong(pinmodel->skinwidth);
1397         skinheight = LittleLong(pinmodel->skinheight);
1398         iskinwidth = 1.0f / skinwidth;
1399         iskinheight = 1.0f / skinheight;
1400
1401         loadmodel->num_surfaces = 1;
1402         loadmodel->submodelsurfaces_start = 0;
1403         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces;
1404         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]));
1405         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1406         loadmodel->modelsurfaces_sorted = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1407         loadmodel->modelsurfaces_sorted[0] = 0;
1408         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1409         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1410         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1411
1412         loadmodel->synctype = ST_RAND;
1413
1414         // load the skins
1415         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1416         skinfiles = Mod_LoadSkinFiles();
1417         if (skinfiles)
1418         {
1419                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1420                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1421                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1422                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1423                 Mod_FreeSkinFiles(skinfiles);
1424         }
1425         else if (loadmodel->numskins)
1426         {
1427                 // skins found (most likely not a player model)
1428                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1429                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1430                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1431                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1432                         Mod_LoadTextureFromQ3Shader(loadmodel->mempool, loadmodel->name, loadmodel->data_textures + i * loadmodel->num_surfaces, inskin, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, MATERIALFLAG_WALL);
1433         }
1434         else
1435         {
1436                 // no skins (most likely a player model)
1437                 loadmodel->numskins = 1;
1438                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1439                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1440                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1441                 Mod_LoadCustomMaterial(loadmodel->mempool, loadmodel->data_textures, loadmodel->name, SUPERCONTENTS_SOLID, MATERIALFLAG_WALL, R_SkinFrame_LoadMissing());
1442         }
1443
1444         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1445         for (i = 0;i < loadmodel->numskins;i++)
1446         {
1447                 loadmodel->skinscenes[i].firstframe = i;
1448                 loadmodel->skinscenes[i].framecount = 1;
1449                 loadmodel->skinscenes[i].loop = true;
1450                 loadmodel->skinscenes[i].framerate = 10;
1451         }
1452
1453         // load the triangles and stvert data
1454         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1455         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1456         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1457         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1458         // swap the triangle list
1459         loadmodel->surfmesh.num_vertices = 0;
1460         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1461         {
1462                 for (j = 0;j < 3;j++)
1463                 {
1464                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1465                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1466                         if (xyz >= numxyz)
1467                         {
1468                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1469                                 xyz = 0;
1470                         }
1471                         if (st >= numst)
1472                         {
1473                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1474                                 st = 0;
1475                         }
1476                         hashindex = (xyz * 256 + st) & 65535;
1477                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1478                                 if (hash->xyz == xyz && hash->st == st)
1479                                         break;
1480                         if (hash == NULL)
1481                         {
1482                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1483                                 hash->xyz = xyz;
1484                                 hash->st = st;
1485                                 hash->next = md2verthash[hashindex];
1486                                 md2verthash[hashindex] = hash;
1487                         }
1488                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1489                 }
1490         }
1491
1492         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1493         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t));
1494         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1495         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1496         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1497         {
1498                 int sts, stt;
1499                 hash = md2verthashdata + i;
1500                 vertremap[i] = hash->xyz;
1501                 sts = LittleShort(inst[hash->st*2+0]);
1502                 stt = LittleShort(inst[hash->st*2+1]);
1503                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1504                 {
1505                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1506                         sts = 0;
1507                         stt = 0;
1508                 }
1509                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1510                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1511         }
1512
1513         Mem_Free(md2verthash);
1514         Mem_Free(md2verthashdata);
1515
1516         // generate ushort elements array if possible
1517         if (loadmodel->surfmesh.num_vertices <= 65536)
1518                 loadmodel->surfmesh.data_element3s = (unsigned short *)Mem_Alloc(loadmodel->mempool, sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles);
1519         if (loadmodel->surfmesh.data_element3s)
1520                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
1521                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
1522
1523         // load the frames
1524         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1525         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1526         {
1527                 int k;
1528                 trivertx_t *v;
1529                 trivertx_t *out;
1530                 pinframe = (md2frame_t *)datapointer;
1531                 datapointer += sizeof(md2frame_t);
1532                 // store the frame scale/translate into the appropriate array
1533                 for (j = 0;j < 3;j++)
1534                 {
1535                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1536                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1537                 }
1538                 // convert the vertices
1539                 v = (trivertx_t *)datapointer;
1540                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1541                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1542                         out[k] = v[vertremap[k]];
1543                 datapointer += numxyz * sizeof(trivertx_t);
1544
1545                 dp_strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1546                 loadmodel->animscenes[i].firstframe = i;
1547                 loadmodel->animscenes[i].framecount = 1;
1548                 loadmodel->animscenes[i].framerate = 10;
1549                 loadmodel->animscenes[i].loop = true;
1550         }
1551
1552         Mem_Free(vertremap);
1553
1554         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
1555         Mod_Alias_MorphMesh_CompileFrames();
1556         if(mod_alias_force_animated.string[0])
1557                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
1558
1559         surface = loadmodel->data_surfaces;
1560         surface->texture = loadmodel->data_textures;
1561         surface->num_firsttriangle = 0;
1562         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1563         surface->num_firstvertex = 0;
1564         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1565
1566         // Always make a BIH for the first frame, we can use it where possible.
1567         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
1568         if (!loadmodel->surfmesh.isanimated)
1569         {
1570                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
1571                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
1572                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
1573                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
1574                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
1575         }
1576 }
1577
1578 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1579 {
1580         int i, j, k, version, meshvertices, meshtriangles;
1581         unsigned char *data;
1582         msurface_t *surface;
1583         md3modelheader_t *pinmodel;
1584         md3frameinfo_t *pinframe;
1585         md3mesh_t *pinmesh;
1586         md3tag_t *pintag;
1587         skinfile_t *skinfiles;
1588
1589         pinmodel = (md3modelheader_t *)buffer;
1590
1591         if (memcmp(pinmodel->identifier, "IDP3", 4))
1592                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1593         version = LittleLong (pinmodel->version);
1594         if (version != MD3VERSION)
1595                 Host_Error ("%s has wrong version number (%i should be %i)",
1596                         loadmodel->name, version, MD3VERSION);
1597
1598         skinfiles = Mod_LoadSkinFiles();
1599         if (loadmodel->numskins < 1)
1600                 loadmodel->numskins = 1;
1601
1602         loadmodel->modeldatatypestring = "MD3";
1603
1604         loadmodel->type = mod_alias;
1605         loadmodel->Draw = R_Mod_Draw;
1606         loadmodel->DrawDepth = R_Mod_DrawDepth;
1607         loadmodel->DrawDebug = R_Mod_DrawDebug;
1608         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
1609         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
1610         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
1611         loadmodel->DrawLight = R_Mod_DrawLight;
1612         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1613         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
1614         loadmodel->PointSuperContents = NULL;
1615         loadmodel->AnimateVertices = Mod_MD3_AnimateVertices;
1616         loadmodel->synctype = ST_RAND;
1617         // convert model flags to EF flags (MF_ROCKET becomes EF_ROCKET, etc)
1618         i = LittleLong (pinmodel->flags);
1619         loadmodel->effects = (((unsigned)i & 255) << 24) | (i & 0x00FFFF00);
1620
1621         // set up some global info about the model
1622         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1623         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1624
1625         // make skinscenes for the skins (no groups)
1626         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1627         for (i = 0;i < loadmodel->numskins;i++)
1628         {
1629                 loadmodel->skinscenes[i].firstframe = i;
1630                 loadmodel->skinscenes[i].framecount = 1;
1631                 loadmodel->skinscenes[i].loop = true;
1632                 loadmodel->skinscenes[i].framerate = 10;
1633         }
1634
1635         // load frameinfo
1636         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1637         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1638         {
1639                 dp_strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1640                 loadmodel->animscenes[i].firstframe = i;
1641                 loadmodel->animscenes[i].framecount = 1;
1642                 loadmodel->animscenes[i].framerate = 10;
1643                 loadmodel->animscenes[i].loop = true;
1644         }
1645
1646         // load tags
1647         loadmodel->num_tagframes = loadmodel->numframes;
1648         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1649         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1650         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1651         {
1652                 dp_strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1653                 for (j = 0;j < 9;j++)
1654                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1655                 for (j = 0;j < 3;j++)
1656                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1657                 //Con_Printf("model \"%s\" frame #%i tag #%i \"%s\"\n", loadmodel->name, i / loadmodel->num_tags, i % loadmodel->num_tags, loadmodel->data_tags[i].name);
1658         }
1659
1660         // load meshes
1661         meshvertices = 0;
1662         meshtriangles = 0;
1663         for (i = 0, pinmesh = (md3mesh_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->num_surfaces;i++, pinmesh = (md3mesh_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_end)))
1664         {
1665                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1666                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1667                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1668                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1669                 meshvertices += LittleLong(pinmesh->num_vertices);
1670                 meshtriangles += LittleLong(pinmesh->num_triangles);
1671         }
1672
1673         loadmodel->submodelsurfaces_start = 0;
1674         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces;
1675         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1676         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1677         loadmodel->surfmesh.num_vertices = meshvertices;
1678         loadmodel->surfmesh.num_triangles = meshtriangles;
1679         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1680         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
1681
1682         // do most allocations as one merged chunk
1683         // This is only robust for C standard types!
1684         data = (unsigned char *)Mem_Alloc(loadmodel->mempool,
1685                 meshvertices * sizeof(float[2])
1686                 + loadmodel->num_surfaces * sizeof(int)
1687                 + meshtriangles * sizeof(int[3])
1688                 + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0));
1689         // Pointers must be taken in descending order of alignment requirement!
1690         loadmodel->surfmesh.data_texcoordtexture2f        = (float *)data; data += meshvertices * sizeof(float[2]);
1691         loadmodel->modelsurfaces_sorted                     = (int *)data; data += loadmodel->num_surfaces * sizeof(int);
1692         loadmodel->surfmesh.data_element3i                  = (int *)data; data += meshtriangles * sizeof(int[3]);
1693         if (meshvertices <= 65536)
1694         {
1695                 loadmodel->surfmesh.data_element3s = (unsigned short *)data; data += meshtriangles * sizeof(unsigned short[3]);
1696         }
1697         // Struct alignment requirements could change so we can't assume them here
1698         // otherwise a safe-looking commit could introduce undefined behaviour!
1699         loadmodel->data_surfaces = Mem_AllocType(loadmodel->mempool, msurface_t, loadmodel->num_surfaces * sizeof(msurface_t));
1700         loadmodel->data_textures = Mem_AllocType(loadmodel->mempool, texture_t, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1701         loadmodel->surfmesh.data_morphmd3vertex = Mem_AllocType(loadmodel->mempool, md3vertex_t, meshvertices * loadmodel->numframes * sizeof(md3vertex_t));
1702
1703         meshvertices = 0;
1704         meshtriangles = 0;
1705         for (i = 0, pinmesh = (md3mesh_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->num_surfaces;i++, pinmesh = (md3mesh_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_end)))
1706         {
1707                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1708                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1709                 loadmodel->modelsurfaces_sorted[i] = i;
1710                 surface = loadmodel->data_surfaces + i;
1711                 surface->texture = loadmodel->data_textures + i;
1712                 surface->num_firsttriangle = meshtriangles;
1713                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1714                 surface->num_firstvertex = meshvertices;
1715                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1716                 meshvertices += surface->num_vertices;
1717                 meshtriangles += surface->num_triangles;
1718
1719                 for (j = 0;j < surface->num_triangles * 3;j++)
1720                 {
1721                         int e = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1722                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = e;
1723                         if (loadmodel->surfmesh.data_element3s)
1724                                 loadmodel->surfmesh.data_element3s[j + surface->num_firsttriangle * 3] = e;
1725                 }
1726                 for (j = 0;j < surface->num_vertices;j++)
1727                 {
1728                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1729                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1730                 }
1731                 for (j = 0;j < loadmodel->numframes;j++)
1732                 {
1733                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1734                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1735                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1736                         {
1737                                 out->origin[0] = LittleShort(in->origin[0]);
1738                                 out->origin[1] = LittleShort(in->origin[1]);
1739                                 out->origin[2] = LittleShort(in->origin[2]);
1740                                 out->pitch = in->pitch;
1741                                 out->yaw = in->yaw;
1742                         }
1743                 }
1744
1745                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, LittleLong(pinmesh->num_shaders) >= 1 ? ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name : "");
1746
1747                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, loadmodel->surfmesh.data_element3s + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1748         }
1749         Mod_Alias_MorphMesh_CompileFrames();
1750         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
1751         Mod_FreeSkinFiles(skinfiles);
1752         Mod_MakeSortedSurfaces(loadmodel);
1753         if(mod_alias_force_animated.string[0])
1754                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
1755
1756         // Always make a BIH for the first frame, we can use it where possible.
1757         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
1758         if (!loadmodel->surfmesh.isanimated)
1759         {
1760                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
1761                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
1762                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
1763                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
1764                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
1765         }
1766 }
1767
1768 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1769 {
1770         zymtype1header_t *pinmodel, *pheader;
1771         unsigned char *pbase;
1772         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1773         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose, f, biggestorigin, tempvec[3], modelscale;
1774         zymvertex_t *verts, *vertdata;
1775         zymscene_t *scene;
1776         zymbone_t *bone;
1777         char *shadername;
1778         skinfile_t *skinfiles;
1779         unsigned char *data;
1780         msurface_t *surface;
1781
1782         pinmodel = (zymtype1header_t *)buffer;
1783         pbase = (unsigned char *)buffer;
1784         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1785                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model", loadmodel->name);
1786         if (BigLong(pinmodel->type) != 1)
1787                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1788
1789         loadmodel->modeldatatypestring = "ZYM";
1790
1791         loadmodel->type = mod_alias;
1792         loadmodel->synctype = ST_RAND;
1793
1794         // byteswap header
1795         pheader = pinmodel;
1796         pheader->type = BigLong(pinmodel->type);
1797         pheader->filesize = BigLong(pinmodel->filesize);
1798         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1799         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1800         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1801         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1802         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1803         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1804         pheader->radius = BigFloat(pinmodel->radius);
1805         pheader->numverts = BigLong(pinmodel->numverts);
1806         pheader->numtris = BigLong(pinmodel->numtris);
1807         pheader->numshaders = BigLong(pinmodel->numshaders);
1808         pheader->numbones = BigLong(pinmodel->numbones);
1809         pheader->numscenes = BigLong(pinmodel->numscenes);
1810         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1811         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1812         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1813         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1814         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1815         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1816         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1817         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1818         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1819         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1820         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1821         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1822         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1823         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1824         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1825         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1826         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1827         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1828
1829         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1830         {
1831                 Con_Printf("%s has no geometry\n", loadmodel->name);
1832                 return;
1833         }
1834         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1835         {
1836                 Con_Printf("%s has no animations\n", loadmodel->name);
1837                 return;
1838         }
1839
1840         loadmodel->Draw = R_Mod_Draw;
1841         loadmodel->DrawDepth = R_Mod_DrawDepth;
1842         loadmodel->DrawDebug = R_Mod_DrawDebug;
1843         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
1844         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
1845         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
1846         loadmodel->DrawLight = R_Mod_DrawLight;
1847         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1848         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
1849         loadmodel->PointSuperContents = NULL;
1850         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
1851
1852         loadmodel->numframes = pheader->numscenes;
1853         loadmodel->num_surfaces = pheader->numshaders;
1854
1855         skinfiles = Mod_LoadSkinFiles();
1856         if (loadmodel->numskins < 1)
1857                 loadmodel->numskins = 1;
1858
1859         // make skinscenes for the skins (no groups)
1860         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1861         for (i = 0;i < loadmodel->numskins;i++)
1862         {
1863                 loadmodel->skinscenes[i].firstframe = i;
1864                 loadmodel->skinscenes[i].framecount = 1;
1865                 loadmodel->skinscenes[i].loop = true;
1866                 loadmodel->skinscenes[i].framerate = 10;
1867         }
1868
1869         // model bbox
1870         // LadyHavoc: actually we blow this away later with Mod_Alias_CalculateBoundingBox()
1871         modelradius = pheader->radius;
1872         for (i = 0;i < 3;i++)
1873         {
1874                 loadmodel->normalmins[i] = pheader->mins[i];
1875                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1876                 loadmodel->rotatedmins[i] = -modelradius;
1877                 loadmodel->rotatedmaxs[i] = modelradius;
1878         }
1879         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1880         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1881         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1882         if (loadmodel->yawmaxs[0] > modelradius)
1883                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1884         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1885         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1886         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1887         loadmodel->radius = modelradius;
1888         loadmodel->radius2 = modelradius * modelradius;
1889
1890         // go through the lumps, swapping things
1891
1892         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1893         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1894         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1895         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1896         for (i = 0;i < pheader->numscenes;i++)
1897         {
1898                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1899                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1900                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1901                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1902                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1903                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1904                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1905                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1906                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1907                 if (loadmodel->animscenes[i].framerate < 0)
1908                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1909                 scene++;
1910         }
1911
1912         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1913         loadmodel->num_bones = pheader->numbones;
1914         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(aliasbone_t));
1915         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1916         for (i = 0;i < pheader->numbones;i++)
1917         {
1918                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1919                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1920                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1921                 if (loadmodel->data_bones[i].parent >= i)
1922                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1923         }
1924
1925         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1926         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1927         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1928         for (i = 0;i < pheader->numverts;i++)
1929         {
1930                 vertbonecounts[i] = BigLong(bonecount[i]);
1931                 if (vertbonecounts[i] != 1)
1932                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1933         }
1934
1935         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]) / loadmodel->num_bones;
1936
1937         meshvertices = pheader->numverts;
1938         meshtriangles = pheader->numtris;
1939
1940         loadmodel->submodelsurfaces_start = 0;
1941         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces;
1942         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1943         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1944         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) + meshvertices * (sizeof(float[14]) + sizeof(unsigned short) + sizeof(unsigned char[2][4])) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]) + loadmodel->num_bones * sizeof(float[12]));
1945         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1946         loadmodel->modelsurfaces_sorted = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1947         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1948         loadmodel->surfmesh.num_vertices = meshvertices;
1949         loadmodel->surfmesh.num_triangles = meshtriangles;
1950         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1951         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1952         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1953         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1954         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1955         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1956         loadmodel->surfmesh.data_skeletalindex4ub = (unsigned char *)data;data += meshvertices * sizeof(unsigned char[4]);
1957         loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data;data += meshvertices * sizeof(unsigned char[4]);
1958         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1959         loadmodel->surfmesh.num_blends = 0;
1960         loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
1961         if (loadmodel->surfmesh.num_vertices <= 65536)
1962         {
1963                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
1964         }
1965         loadmodel->data_poses7s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
1966         loadmodel->surfmesh.data_blendweights = NULL;
1967
1968         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1969         poses = (float *) (pheader->lump_poses.start + pbase);
1970         // figure out scale of model from root bone, for compatibility with old zmodel versions
1971         tempvec[0] = BigFloat(poses[0]);
1972         tempvec[1] = BigFloat(poses[1]);
1973         tempvec[2] = BigFloat(poses[2]);
1974         modelscale = VectorLength(tempvec);
1975         biggestorigin = 0;
1976         for (i = 0;i < loadmodel->num_bones * numposes * 12;i++)
1977         {
1978                 f = fabs(BigFloat(poses[i]));
1979                 biggestorigin = max(biggestorigin, f);
1980         }
1981         loadmodel->num_posescale = biggestorigin / 32767.0f;
1982         loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
1983         for (i = 0;i < numposes;i++)
1984         {
1985                 const float *frameposes = (float *) (pheader->lump_poses.start + pbase) + 12*i*loadmodel->num_bones;
1986                 for (j = 0;j < loadmodel->num_bones;j++)
1987                 {
1988                         float pose[12];
1989                         matrix4x4_t posematrix;
1990                         for (k = 0;k < 12;k++)
1991                                 pose[k] = BigFloat(frameposes[j*12+k]);
1992                         //if (j < loadmodel->num_bones)
1993                         //      Con_Printf("%s: bone %i = %f %f %f %f : %f %f %f %f : %f %f %f %f : scale = %f\n", loadmodel->name, j, pose[0], pose[1], pose[2], pose[3], pose[4], pose[5], pose[6], pose[7], pose[8], pose[9], pose[10], pose[11], VectorLength(pose));
1994                         // scale child bones to match the root scale
1995                         if (loadmodel->data_bones[j].parent >= 0)
1996                         {
1997                                 pose[3] *= modelscale;
1998                                 pose[7] *= modelscale;
1999                                 pose[11] *= modelscale;
2000                         }
2001                         // normalize rotation matrix
2002                         VectorNormalize(pose + 0);
2003                         VectorNormalize(pose + 4);
2004                         VectorNormalize(pose + 8);
2005                         Matrix4x4_FromArray12FloatD3D(&posematrix, pose);
2006                         Matrix4x4_ToBonePose7s(&posematrix, loadmodel->num_poseinvscale, loadmodel->data_poses7s + 7*(i*loadmodel->num_bones+j));
2007                 }
2008         }
2009
2010         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
2011         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
2012         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
2013         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
2014         // (converting from weight-blending skeletal animation to
2015         //  deformation-based skeletal animation)
2016         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
2017         for (i = 0;i < loadmodel->num_bones;i++)
2018         {
2019                 float m[12];
2020                 for (k = 0;k < 12;k++)
2021                         m[k] = BigFloat(poses[i*12+k]);
2022                 if (loadmodel->data_bones[i].parent >= 0)
2023                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
2024                 else
2025                         for (k = 0;k < 12;k++)
2026                                 bonepose[12*i+k] = m[k];
2027         }
2028         for (j = 0;j < pheader->numverts;j++)
2029         {
2030                 // this format really should have had a per vertexweight weight value...
2031                 // but since it does not, the weighting is completely ignored and
2032                 // only one weight is allowed per vertex
2033                 int boneindex = BigLong(vertdata[j].bonenum);
2034                 const float *m = bonepose + 12 * boneindex;
2035                 float relativeorigin[3];
2036                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
2037                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
2038                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
2039                 // transform the vertex bone weight into the base mesh
2040                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
2041                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
2042                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
2043                 // store the weight as the primary weight on this vertex
2044                 loadmodel->surfmesh.blends[j] = boneindex;
2045                 loadmodel->surfmesh.data_skeletalindex4ub[j*4  ] = boneindex;
2046                 loadmodel->surfmesh.data_skeletalindex4ub[j*4+1] = 0;
2047                 loadmodel->surfmesh.data_skeletalindex4ub[j*4+2] = 0;
2048                 loadmodel->surfmesh.data_skeletalindex4ub[j*4+3] = 0;
2049                 loadmodel->surfmesh.data_skeletalweight4ub[j*4  ] = 255;
2050                 loadmodel->surfmesh.data_skeletalweight4ub[j*4+1] = 0;
2051                 loadmodel->surfmesh.data_skeletalweight4ub[j*4+2] = 0;
2052                 loadmodel->surfmesh.data_skeletalweight4ub[j*4+3] = 0;
2053         }
2054         Z_Free(bonepose);
2055         // normals and tangents are calculated after elements are loaded
2056
2057         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
2058         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
2059         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
2060         for (i = 0;i < pheader->numverts;i++)
2061         {
2062                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
2063                 // flip T coordinate for OpenGL
2064                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
2065         }
2066
2067         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
2068         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
2069         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
2070
2071         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
2072         //zymlump_t lump_render; // int renderlist[rendersize]; // sorted by shader with run lengths (int count), shaders are sequentially used, each run can be used with glDrawElements (each triangle is 3 int indices)
2073         // byteswap, validate, and swap winding order of tris
2074         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
2075         if (pheader->lump_render.length != count)
2076                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
2077         renderlist = (int *) (pheader->lump_render.start + pbase);
2078         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
2079         meshtriangles = 0;
2080         for (i = 0;i < loadmodel->num_surfaces;i++)
2081         {
2082                 int firstvertex, lastvertex;
2083                 if (renderlist >= renderlistend)
2084                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
2085                 count = BigLong(*renderlist);renderlist++;
2086                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
2087                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
2088
2089                 loadmodel->modelsurfaces_sorted[i] = i;
2090                 surface = loadmodel->data_surfaces + i;
2091                 surface->texture = loadmodel->data_textures + i;
2092                 surface->num_firsttriangle = meshtriangles;
2093                 surface->num_triangles = count;
2094                 meshtriangles += surface->num_triangles;
2095
2096                 // load the elements
2097                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
2098                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
2099                 {
2100                         outelements[j*3+2] = BigLong(renderlist[0]);
2101                         outelements[j*3+1] = BigLong(renderlist[1]);
2102                         outelements[j*3+0] = BigLong(renderlist[2]);
2103                 }
2104                 // validate the elements and find the used vertex range
2105                 firstvertex = meshvertices;
2106                 lastvertex = 0;
2107                 for (j = 0;j < surface->num_triangles * 3;j++)
2108                 {
2109                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
2110                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
2111                         firstvertex = min(firstvertex, outelements[j]);
2112                         lastvertex = max(lastvertex, outelements[j]);
2113                 }
2114                 surface->num_firstvertex = firstvertex;
2115                 surface->num_vertices = lastvertex + 1 - firstvertex;
2116
2117                 // since zym models do not have named sections, reuse their shader
2118                 // name as the section name
2119                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
2120                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
2121         }
2122         Mod_FreeSkinFiles(skinfiles);
2123         Mem_Free(vertbonecounts);
2124         Mem_Free(verts);
2125         Mod_MakeSortedSurfaces(loadmodel);
2126
2127         // compute all the mesh information that was not loaded from the file
2128         if (loadmodel->surfmesh.data_element3s)
2129                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2130                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2131         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2132         Mod_BuildBaseBonePoses();
2133         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);
2134         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);
2135         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
2136         if(mod_alias_force_animated.string[0])
2137                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
2138
2139         // Always make a BIH for the first frame, we can use it where possible.
2140         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
2141         if (!loadmodel->surfmesh.isanimated)
2142         {
2143                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
2144                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
2145                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
2146                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
2147                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
2148         }
2149 }
2150
2151 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2152 {
2153         dpmheader_t *pheader;
2154         dpmframe_t *frames;
2155         dpmbone_t *bone;
2156         dpmmesh_t *dpmmesh;
2157         unsigned char *pbase;
2158         int i, j, k, meshvertices, meshtriangles;
2159         skinfile_t *skinfiles;
2160         unsigned char *data;
2161         float *bonepose;
2162         float biggestorigin, tempvec[3], modelscale;
2163         float f;
2164         float *poses;
2165
2166         pheader = (dpmheader_t *)buffer;
2167         pbase = (unsigned char *)buffer;
2168         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
2169                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model", loadmodel->name);
2170         if (BigLong(pheader->type) != 2)
2171                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
2172
2173         loadmodel->modeldatatypestring = "DPM";
2174
2175         loadmodel->type = mod_alias;
2176         loadmodel->synctype = ST_RAND;
2177
2178         // byteswap header
2179         pheader->type = BigLong(pheader->type);
2180         pheader->filesize = BigLong(pheader->filesize);
2181         pheader->mins[0] = BigFloat(pheader->mins[0]);
2182         pheader->mins[1] = BigFloat(pheader->mins[1]);
2183         pheader->mins[2] = BigFloat(pheader->mins[2]);
2184         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
2185         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
2186         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
2187         pheader->yawradius = BigFloat(pheader->yawradius);
2188         pheader->allradius = BigFloat(pheader->allradius);
2189         pheader->num_bones = BigLong(pheader->num_bones);
2190         pheader->num_meshs = BigLong(pheader->num_meshs);
2191         pheader->num_frames = BigLong(pheader->num_frames);
2192         pheader->ofs_bones = BigLong(pheader->ofs_bones);
2193         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
2194         pheader->ofs_frames = BigLong(pheader->ofs_frames);
2195
2196         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
2197         {
2198                 Con_Printf("%s has no geometry\n", loadmodel->name);
2199                 return;
2200         }
2201         if (pheader->num_frames < 1)
2202         {
2203                 Con_Printf("%s has no frames\n", loadmodel->name);
2204                 return;
2205         }
2206
2207         loadmodel->Draw = R_Mod_Draw;
2208         loadmodel->DrawDepth = R_Mod_DrawDepth;
2209         loadmodel->DrawDebug = R_Mod_DrawDebug;
2210         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
2211         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
2212         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
2213         loadmodel->DrawLight = R_Mod_DrawLight;
2214         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2215         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
2216         loadmodel->PointSuperContents = NULL;
2217         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
2218
2219         // model bbox
2220         // LadyHavoc: actually we blow this away later with Mod_Alias_CalculateBoundingBox()
2221         for (i = 0;i < 3;i++)
2222         {
2223                 loadmodel->normalmins[i] = pheader->mins[i];
2224                 loadmodel->normalmaxs[i] = pheader->maxs[i];
2225                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
2226                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
2227                 loadmodel->rotatedmins[i] = -pheader->allradius;
2228                 loadmodel->rotatedmaxs[i] = pheader->allradius;
2229         }
2230         loadmodel->radius = pheader->allradius;
2231         loadmodel->radius2 = pheader->allradius * pheader->allradius;
2232
2233         // load external .skin files if present
2234         skinfiles = Mod_LoadSkinFiles();
2235         if (loadmodel->numskins < 1)
2236                 loadmodel->numskins = 1;
2237
2238         meshvertices = 0;
2239         meshtriangles = 0;
2240
2241         // gather combined statistics from the meshes
2242         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
2243         for (i = 0;i < (int)pheader->num_meshs;i++)
2244         {
2245                 int numverts = BigLong(dpmmesh->num_verts);
2246                 meshvertices += numverts;
2247                 meshtriangles += BigLong(dpmmesh->num_tris);
2248                 dpmmesh++;
2249         }
2250
2251         loadmodel->numframes = pheader->num_frames;
2252         loadmodel->num_bones = pheader->num_bones;
2253         loadmodel->num_poses = loadmodel->numframes;
2254         loadmodel->submodelsurfaces_start = 0;
2255         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces = pheader->num_meshs;
2256         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
2257         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
2258         loadmodel->surfmesh.num_vertices = meshvertices;
2259         loadmodel->surfmesh.num_triangles = meshtriangles;
2260         loadmodel->surfmesh.num_blends = 0;
2261
2262         // do most allocations as one merged chunk
2263         // This is only robust for C standard types!
2264         data = (unsigned char *)Mem_Alloc(loadmodel->mempool,
2265                 loadmodel->num_surfaces * sizeof(int)
2266                 + meshtriangles * sizeof(int[3])
2267                 + (meshvertices <= 65536 ? meshtriangles * sizeof(unsigned short[3]) : 0)
2268                 + meshvertices * (sizeof(float[14]) + sizeof(unsigned short) + sizeof(unsigned char[2][4]))
2269                 + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7])
2270                 + loadmodel->num_bones * sizeof(float[12]));
2271         // Pointers must be taken in descending order of alignment requirement!
2272         loadmodel->surfmesh.data_vertex3f                  = (float *)data; data += meshvertices * sizeof(float[3]);
2273         loadmodel->surfmesh.data_svector3f                 = (float *)data; data += meshvertices * sizeof(float[3]);
2274         loadmodel->surfmesh.data_tvector3f                 = (float *)data; data += meshvertices * sizeof(float[3]);
2275         loadmodel->surfmesh.data_normal3f                  = (float *)data; data += meshvertices * sizeof(float[3]);
2276         loadmodel->surfmesh.data_texcoordtexture2f         = (float *)data; data += meshvertices * sizeof(float[2]);
2277         loadmodel->data_baseboneposeinverse                = (float *)data; data += loadmodel->num_bones * sizeof(float[12]);
2278         loadmodel->modelsurfaces_sorted                      = (int *)data; data += loadmodel->num_surfaces * sizeof(int);
2279         loadmodel->surfmesh.data_element3i                   = (int *)data; data += meshtriangles * sizeof(int[3]);
2280         loadmodel->surfmesh.blends                = (unsigned short *)data; data += meshvertices * sizeof(unsigned short);
2281         if (meshvertices <= 65536)
2282         {
2283                 loadmodel->surfmesh.data_element3s = (unsigned short *)data; data += meshtriangles * sizeof(unsigned short[3]);
2284         }
2285         loadmodel->data_poses7s                            = (short *)data; data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
2286         loadmodel->surfmesh.data_skeletalindex4ub  = (unsigned char *)data; data += meshvertices * sizeof(unsigned char[4]);
2287         loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data; data += meshvertices * sizeof(unsigned char[4]);
2288         // Struct alignment requirements could change so we can't assume them here
2289         // otherwise a safe-looking commit could introduce undefined behaviour!
2290         loadmodel->data_surfaces = Mem_AllocType(loadmodel->mempool, msurface_t, loadmodel->num_surfaces * sizeof(msurface_t));
2291         loadmodel->data_textures = Mem_AllocType(loadmodel->mempool, texture_t, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
2292         loadmodel->skinscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numskins * sizeof(animscene_t));
2293         loadmodel->data_bones = Mem_AllocType(loadmodel->mempool, aliasbone_t, loadmodel->num_bones * sizeof(aliasbone_t));
2294         loadmodel->animscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numframes * sizeof(animscene_t));
2295         loadmodel->surfmesh.data_blendweights = Mem_AllocType(loadmodel->mempool, blendweights_t, meshvertices * sizeof(blendweights_t));
2296
2297         for (i = 0;i < loadmodel->numskins;i++)
2298         {
2299                 loadmodel->skinscenes[i].firstframe = i;
2300                 loadmodel->skinscenes[i].framecount = 1;
2301                 loadmodel->skinscenes[i].loop = true;
2302                 loadmodel->skinscenes[i].framerate = 10;
2303         }
2304
2305         // load the bone info
2306         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
2307         for (i = 0;i < loadmodel->num_bones;i++)
2308         {
2309                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
2310                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
2311                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
2312                 if (loadmodel->data_bones[i].parent >= i)
2313                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
2314         }
2315
2316         // load the frames
2317         frames = (dpmframe_t *) (pbase + pheader->ofs_frames);
2318         // figure out scale of model from root bone, for compatibility with old dpmodel versions
2319         poses = (float *) (pbase + BigLong(frames[0].ofs_bonepositions));
2320         tempvec[0] = BigFloat(poses[0]);
2321         tempvec[1] = BigFloat(poses[1]);
2322         tempvec[2] = BigFloat(poses[2]);
2323         modelscale = VectorLength(tempvec);
2324         biggestorigin = 0;
2325         for (i = 0;i < loadmodel->numframes;i++)
2326         {
2327                 memcpy(loadmodel->animscenes[i].name, frames[i].name, sizeof(frames[i].name));
2328                 loadmodel->animscenes[i].firstframe = i;
2329                 loadmodel->animscenes[i].framecount = 1;
2330                 loadmodel->animscenes[i].loop = true;
2331                 loadmodel->animscenes[i].framerate = 10;
2332                 // load the bone poses for this frame
2333                 poses = (float *) (pbase + BigLong(frames[i].ofs_bonepositions));
2334                 for (j = 0;j < loadmodel->num_bones*12;j++)
2335                 {
2336                         f = fabs(BigFloat(poses[j]));
2337                         biggestorigin = max(biggestorigin, f);
2338                 }
2339                 // stuff not processed here: mins, maxs, yawradius, allradius
2340         }
2341         loadmodel->num_posescale = biggestorigin / 32767.0f;
2342         loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
2343         for (i = 0;i < loadmodel->numframes;i++)
2344         {
2345                 const float *frameposes = (float *) (pbase + BigLong(frames[i].ofs_bonepositions));
2346                 for (j = 0;j < loadmodel->num_bones;j++)
2347                 {
2348                         float pose[12];
2349                         matrix4x4_t posematrix;
2350                         for (k = 0;k < 12;k++)
2351                                 pose[k] = BigFloat(frameposes[j*12+k]);
2352                         // scale child bones to match the root scale
2353                         if (loadmodel->data_bones[j].parent >= 0)
2354                         {
2355                                 pose[3] *= modelscale;
2356                                 pose[7] *= modelscale;
2357                                 pose[11] *= modelscale;
2358                         }
2359                         // normalize rotation matrix
2360                         VectorNormalize(pose + 0);
2361                         VectorNormalize(pose + 4);
2362                         VectorNormalize(pose + 8);
2363                         Matrix4x4_FromArray12FloatD3D(&posematrix, pose);
2364                         Matrix4x4_ToBonePose7s(&posematrix, loadmodel->num_poseinvscale, loadmodel->data_poses7s + 7*(i*loadmodel->num_bones+j));
2365                 }
2366         }
2367
2368         // load the meshes now
2369         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
2370         meshvertices = 0;
2371         meshtriangles = 0;
2372         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
2373         // (converting from weight-blending skeletal animation to
2374         //  deformation-based skeletal animation)
2375         poses = (float *) (pbase + BigLong(frames[0].ofs_bonepositions));
2376         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
2377         for (i = 0;i < loadmodel->num_bones;i++)
2378         {
2379                 float m[12];
2380                 for (k = 0;k < 12;k++)
2381                         m[k] = BigFloat(poses[i*12+k]);
2382                 if (loadmodel->data_bones[i].parent >= 0)
2383                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
2384                 else
2385                         for (k = 0;k < 12;k++)
2386                                 bonepose[12*i+k] = m[k];
2387         }
2388         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
2389         {
2390                 const int *inelements;
2391                 int *outelement3i;
2392                 unsigned short *outelement3s;
2393                 const float *intexcoord;
2394                 msurface_t *surface;
2395
2396                 loadmodel->modelsurfaces_sorted[i] = i;
2397                 surface = loadmodel->data_surfaces + i;
2398                 surface->texture = loadmodel->data_textures + i;
2399                 surface->num_firsttriangle = meshtriangles;
2400                 surface->num_triangles = BigLong(dpmmesh->num_tris);
2401                 surface->num_firstvertex = meshvertices;
2402                 surface->num_vertices = BigLong(dpmmesh->num_verts);
2403                 meshvertices += surface->num_vertices;
2404                 meshtriangles += surface->num_triangles;
2405
2406                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
2407                 outelement3i = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
2408                 outelement3s = loadmodel->surfmesh.data_element3s ? loadmodel->surfmesh.data_element3s + surface->num_firsttriangle * 3 : NULL;
2409                 for (j = 0;j < surface->num_triangles;j++)
2410                 {
2411                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
2412                         outelement3i[j * 3 + 0] = surface->num_firstvertex + BigLong(inelements[j * 3 + 2]);
2413                         outelement3i[j * 3 + 1] = surface->num_firstvertex + BigLong(inelements[j * 3 + 1]);
2414                         outelement3i[j * 3 + 2] = surface->num_firstvertex + BigLong(inelements[j * 3 + 0]);
2415                         if (outelement3s)
2416                         {
2417                                 outelement3s[j * 3 + 0] = outelement3i[j * 3 + 0];
2418                                 outelement3s[j * 3 + 1] = outelement3i[j * 3 + 1];
2419                                 outelement3s[j * 3 + 2] = outelement3i[j * 3 + 2];
2420                         }
2421                 }
2422
2423                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
2424                 for (j = 0;j < surface->num_vertices*2;j++)
2425                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
2426
2427                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
2428                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
2429                 {
2430                         int weightindex[4] = { 0, 0, 0, 0 };
2431                         float weightinfluence[4] = { 0, 0, 0, 0 };
2432                         int l;
2433                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
2434                         data += sizeof(dpmvertex_t);
2435                         for (k = 0;k < numweights;k++)
2436                         {
2437                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
2438                                 int boneindex = BigLong(vert->bonenum);
2439                                 const float *m = bonepose + 12 * boneindex;
2440                                 float influence = BigFloat(vert->influence);
2441                                 float relativeorigin[3], relativenormal[3];
2442                                 relativeorigin[0] = BigFloat(vert->origin[0]);
2443                                 relativeorigin[1] = BigFloat(vert->origin[1]);
2444                                 relativeorigin[2] = BigFloat(vert->origin[2]);
2445                                 relativenormal[0] = BigFloat(vert->normal[0]);
2446                                 relativenormal[1] = BigFloat(vert->normal[1]);
2447                                 relativenormal[2] = BigFloat(vert->normal[2]);
2448                                 // blend the vertex bone weights into the base mesh
2449                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
2450                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
2451                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
2452                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
2453                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
2454                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
2455                                 if (!k)
2456                                 {
2457                                         // store the first (and often only) weight
2458                                         weightinfluence[0] = influence;
2459                                         weightindex[0] = boneindex;
2460                                 }
2461                                 else
2462                                 {
2463                                         // sort the new weight into this vertex's weight table
2464                                         // (which only accepts up to 4 bones per vertex)
2465                                         for (l = 0;l < 4;l++)
2466                                         {
2467                                                 if (weightinfluence[l] < influence)
2468                                                 {
2469                                                         // move weaker influence weights out of the way first
2470                                                         int l2;
2471                                                         for (l2 = 3;l2 > l;l2--)
2472                                                         {
2473                                                                 weightinfluence[l2] = weightinfluence[l2-1];
2474                                                                 weightindex[l2] = weightindex[l2-1];
2475                                                         }
2476                                                         // store the new weight
2477                                                         weightinfluence[l] = influence;
2478                                                         weightindex[l] = boneindex;
2479                                                         break;
2480                                                 }
2481                                         }
2482                                 }
2483                                 data += sizeof(dpmbonevert_t);
2484                         }
2485                         loadmodel->surfmesh.blends[j] = Mod_Skeletal_CompressBlend(loadmodel, weightindex, weightinfluence);
2486                         loadmodel->surfmesh.data_skeletalindex4ub[j*4  ] = weightindex[0];
2487                         loadmodel->surfmesh.data_skeletalindex4ub[j*4+1] = weightindex[1];
2488                         loadmodel->surfmesh.data_skeletalindex4ub[j*4+2] = weightindex[2];
2489                         loadmodel->surfmesh.data_skeletalindex4ub[j*4+3] = weightindex[3];
2490                         loadmodel->surfmesh.data_skeletalweight4ub[j*4  ] = (unsigned char)(weightinfluence[0]*255.0f);
2491                         loadmodel->surfmesh.data_skeletalweight4ub[j*4+1] = (unsigned char)(weightinfluence[1]*255.0f);
2492                         loadmodel->surfmesh.data_skeletalweight4ub[j*4+2] = (unsigned char)(weightinfluence[2]*255.0f);
2493                         loadmodel->surfmesh.data_skeletalweight4ub[j*4+3] = (unsigned char)(weightinfluence[3]*255.0f);
2494                 }
2495
2496                 // since dpm models do not have named sections, reuse their shader name as the section name
2497                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
2498
2499                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, loadmodel->surfmesh.data_element3s + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
2500         }
2501         if (loadmodel->surfmesh.num_blends < meshvertices)
2502                 loadmodel->surfmesh.data_blendweights = Mem_ReallocType(loadmodel->mempool, loadmodel->surfmesh.data_blendweights, blendweights_t, loadmodel->surfmesh.num_blends * sizeof(blendweights_t));
2503         Z_Free(bonepose);
2504         Mod_FreeSkinFiles(skinfiles);
2505         Mod_MakeSortedSurfaces(loadmodel);
2506
2507         // compute all the mesh information that was not loaded from the file
2508         Mod_BuildBaseBonePoses();
2509         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);
2510         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
2511         if(mod_alias_force_animated.string[0])
2512                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
2513
2514         // Always make a BIH for the first frame, we can use it where possible.
2515         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
2516         if (!loadmodel->surfmesh.isanimated)
2517         {
2518                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
2519                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
2520                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
2521                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
2522                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
2523         }
2524 }
2525
2526 // no idea why PSK/PSA files contain weird quaternions but they do...
2527 #define PSKQUATNEGATIONS
2528 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2529 {
2530         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
2531         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
2532         fs_offset_t filesize;
2533         pskpnts_t *pnts;
2534         pskvtxw_t *vtxw;
2535         pskface_t *faces;
2536         pskmatt_t *matts;
2537         pskboneinfo_t *bones;
2538         pskrawweights_t *rawweights;
2539         //pskboneinfo_t *animbones;
2540         pskaniminfo_t *anims;
2541         pskanimkeys_t *animkeys;
2542         void *animfilebuffer, *animbuffer, *animbufferend;
2543         unsigned char *data;
2544         pskchunk_t *pchunk;
2545         skinfile_t *skinfiles;
2546         char animname[MAX_QPATH];
2547         float biggestorigin;
2548
2549         pchunk = (pskchunk_t *)buffer;
2550         if (strcmp(pchunk->id, "ACTRHEAD"))
2551                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2552
2553         loadmodel->modeldatatypestring = "PSK";
2554
2555         loadmodel->type = mod_alias;
2556         loadmodel->Draw = R_Mod_Draw;
2557         loadmodel->DrawDepth = R_Mod_DrawDepth;
2558         loadmodel->DrawDebug = R_Mod_DrawDebug;
2559         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
2560         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
2561         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
2562         loadmodel->DrawLight = R_Mod_DrawLight;
2563         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2564         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
2565         loadmodel->PointSuperContents = NULL;
2566         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
2567         loadmodel->synctype = ST_RAND;
2568
2569         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2570         dp_strlcat(animname, ".psa", sizeof(animname));
2571         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2572         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2573         if (!animbuffer)
2574                 animbufferend = animbuffer;
2575
2576         numpnts = 0;
2577         pnts = NULL;
2578         numvtxw = 0;
2579         vtxw = NULL;
2580         numfaces = 0;
2581         faces = NULL;
2582         nummatts = 0;
2583         matts = NULL;
2584         numbones = 0;
2585         bones = NULL;
2586         numrawweights = 0;
2587         rawweights = NULL;
2588         numanims = 0;
2589         anims = NULL;
2590         numanimkeys = 0;
2591         animkeys = NULL;
2592
2593         while (buffer < bufferend)
2594         {
2595                 pchunk = (pskchunk_t *)buffer;
2596                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2597                 version = LittleLong(pchunk->version);
2598                 recordsize = LittleLong(pchunk->recordsize);
2599                 numrecords = LittleLong(pchunk->numrecords);
2600                 if (developer_extra.integer)
2601                         Con_DPrintf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2602                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2603                         Con_Printf ("%s: chunk %s has unknown version %x (0x1e83b9, 0x1e9179, 0x2e, 0x12f2bc, 0x12f2f0 are currently supported), trying to load anyway!\n", loadmodel->name, pchunk->id, version);
2604                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2605                 {
2606                         // nothing to do
2607                 }
2608                 else if (!strcmp(pchunk->id, "PNTS0000"))
2609                 {
2610                         pskpnts_t *p;
2611                         if (recordsize != sizeof(*p))
2612                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2613                         // byteswap in place and keep the pointer
2614                         numpnts = numrecords;
2615                         pnts = (pskpnts_t *)buffer;
2616                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2617                         {
2618                                 p->origin[0] = LittleFloat(p->origin[0]);
2619                                 p->origin[1] = LittleFloat(p->origin[1]);
2620                                 p->origin[2] = LittleFloat(p->origin[2]);
2621                         }
2622                         buffer = p;
2623                 }
2624                 else if (!strcmp(pchunk->id, "VTXW0000"))
2625                 {
2626                         pskvtxw_t *p;
2627                         if (recordsize != sizeof(*p))
2628                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2629                         // byteswap in place and keep the pointer
2630                         numvtxw = numrecords;
2631                         vtxw = (pskvtxw_t *)buffer;
2632                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2633                         {
2634                                 p->pntsindex = LittleShort(p->pntsindex);
2635                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2636                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2637                                 if (p->pntsindex >= numpnts)
2638                                 {
2639                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2640                                         p->pntsindex = 0;
2641                                 }
2642                         }
2643                         buffer = p;
2644                 }
2645                 else if (!strcmp(pchunk->id, "FACE0000"))
2646                 {
2647                         pskface_t *p;
2648                         if (recordsize != sizeof(*p))
2649                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2650                         // byteswap in place and keep the pointer
2651                         numfaces = numrecords;
2652                         faces = (pskface_t *)buffer;
2653                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2654                         {
2655                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2656                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2657                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2658                                 p->group = LittleLong(p->group);
2659                                 if (p->vtxwindex[0] >= numvtxw)
2660                                 {
2661                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2662                                         p->vtxwindex[0] = 0;
2663                                 }
2664                                 if (p->vtxwindex[1] >= numvtxw)
2665                                 {
2666                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2667                                         p->vtxwindex[1] = 0;
2668                                 }
2669                                 if (p->vtxwindex[2] >= numvtxw)
2670                                 {
2671                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2672                                         p->vtxwindex[2] = 0;
2673                                 }
2674                         }
2675                         buffer = p;
2676                 }
2677                 else if (!strcmp(pchunk->id, "MATT0000"))
2678                 {
2679                         pskmatt_t *p;
2680                         if (recordsize != sizeof(*p))
2681                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2682                         // byteswap in place and keep the pointer
2683                         nummatts = numrecords;
2684                         matts = (pskmatt_t *)buffer;
2685                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2686                         {
2687                                 // nothing to do
2688                         }
2689                         buffer = p;
2690                 }
2691                 else if (!strcmp(pchunk->id, "REFSKELT"))
2692                 {
2693                         pskboneinfo_t *p;
2694                         if (recordsize != sizeof(*p))
2695                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2696                         // byteswap in place and keep the pointer
2697                         numbones = numrecords;
2698                         bones = (pskboneinfo_t *)buffer;
2699                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2700                         {
2701                                 p->numchildren = LittleLong(p->numchildren);
2702                                 p->parent = LittleLong(p->parent);
2703                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2704                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2705                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2706                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2707                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2708                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2709                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2710                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2711                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2712                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2713                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2714 #ifdef PSKQUATNEGATIONS
2715                                 if (index)
2716                                 {
2717                                         p->basepose.quat[0] *= -1;
2718                                         p->basepose.quat[1] *= -1;
2719                                         p->basepose.quat[2] *= -1;
2720                                 }
2721                                 else
2722                                 {
2723                                         p->basepose.quat[0] *=  1;
2724                                         p->basepose.quat[1] *= -1;
2725                                         p->basepose.quat[2] *=  1;
2726                                 }
2727 #endif
2728                                 if (p->parent < 0 || p->parent >= numbones)
2729                                 {
2730                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2731                                         p->parent = 0;
2732                                 }
2733                         }
2734                         buffer = p;
2735                 }
2736                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2737                 {
2738                         pskrawweights_t *p;
2739                         if (recordsize != sizeof(*p))
2740                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2741                         // byteswap in place and keep the pointer
2742                         numrawweights = numrecords;
2743                         rawweights = (pskrawweights_t *)buffer;
2744                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2745                         {
2746                                 p->weight = LittleFloat(p->weight);
2747                                 p->pntsindex = LittleLong(p->pntsindex);
2748                                 p->boneindex = LittleLong(p->boneindex);
2749                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2750                                 {
2751                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2752                                         p->pntsindex = 0;
2753                                 }
2754                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2755                                 {
2756                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2757                                         p->boneindex = 0;
2758                                 }
2759                         }
2760                         buffer = p;
2761                 }
2762         }
2763
2764         while (animbuffer < animbufferend)
2765         {
2766                 pchunk = (pskchunk_t *)animbuffer;
2767                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2768                 version = LittleLong(pchunk->version);
2769                 recordsize = LittleLong(pchunk->recordsize);
2770                 numrecords = LittleLong(pchunk->numrecords);
2771                 if (developer_extra.integer)
2772                         Con_DPrintf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2773                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2774                         Con_Printf ("%s: chunk %s has unknown version %x (0x1e83b9, 0x1e9179, 0x2e, 0x12f2bc, 0x12f2f0 are currently supported), trying to load anyway!\n", animname, pchunk->id, version);
2775                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2776                 {
2777                         // nothing to do
2778                 }
2779                 else if (!strcmp(pchunk->id, "BONENAMES"))
2780                 {
2781                         pskboneinfo_t *p;
2782                         if (recordsize != sizeof(*p))
2783                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2784                         // byteswap in place and keep the pointer
2785                         numanimbones = numrecords;
2786                         //animbones = (pskboneinfo_t *)animbuffer;
2787                         // NOTE: supposedly psa does not need to match the psk model, the
2788                         // bones missing from the psa would simply use their base
2789                         // positions from the psk, but this is hard for me to implement
2790                         // and people can easily make animations that match.
2791                         if (numanimbones != numbones)
2792                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2793                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2794                         {
2795                                 p->numchildren = LittleLong(p->numchildren);
2796                                 p->parent = LittleLong(p->parent);
2797                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2798                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2799                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2800                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2801                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2802                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2803                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2804                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2805                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2806                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2807                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2808 #ifdef PSKQUATNEGATIONS
2809                                 if (index)
2810                                 {
2811                                         p->basepose.quat[0] *= -1;
2812                                         p->basepose.quat[1] *= -1;
2813                                         p->basepose.quat[2] *= -1;
2814                                 }
2815                                 else
2816                                 {
2817                                         p->basepose.quat[0] *=  1;
2818                                         p->basepose.quat[1] *= -1;
2819                                         p->basepose.quat[2] *=  1;
2820                                 }
2821 #endif
2822                                 if (p->parent < 0 || p->parent >= numanimbones)
2823                                 {
2824                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2825                                         p->parent = 0;
2826                                 }
2827                                 // check that bones are the same as in the base
2828                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2829                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2830                         }
2831                         animbuffer = p;
2832                 }
2833                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2834                 {
2835                         pskaniminfo_t *p;
2836                         if (recordsize != sizeof(*p))
2837                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2838                         // byteswap in place and keep the pointer
2839                         numanims = numrecords;
2840                         anims = (pskaniminfo_t *)animbuffer;
2841                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2842                         {
2843                                 p->numbones = LittleLong(p->numbones);
2844                                 p->playtime = LittleFloat(p->playtime);
2845                                 p->fps = LittleFloat(p->fps);
2846                                 p->firstframe = LittleLong(p->firstframe);
2847                                 p->numframes = LittleLong(p->numframes);
2848                                 if (p->numbones != numbones)
2849                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2850                         }
2851                         animbuffer = p;
2852                 }
2853                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2854                 {
2855                         pskanimkeys_t *p;
2856                         if (recordsize != sizeof(*p))
2857                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2858                         numanimkeys = numrecords;
2859                         animkeys = (pskanimkeys_t *)animbuffer;
2860                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2861                         {
2862                                 p->origin[0] = LittleFloat(p->origin[0]);
2863                                 p->origin[1] = LittleFloat(p->origin[1]);
2864                                 p->origin[2] = LittleFloat(p->origin[2]);
2865                                 p->quat[0] = LittleFloat(p->quat[0]);
2866                                 p->quat[1] = LittleFloat(p->quat[1]);
2867                                 p->quat[2] = LittleFloat(p->quat[2]);
2868                                 p->quat[3] = LittleFloat(p->quat[3]);
2869                                 p->frametime = LittleFloat(p->frametime);
2870 #ifdef PSKQUATNEGATIONS
2871                                 if (index % numbones)
2872                                 {
2873                                         p->quat[0] *= -1;
2874                                         p->quat[1] *= -1;
2875                                         p->quat[2] *= -1;
2876                                 }
2877                                 else
2878                                 {
2879                                         p->quat[0] *=  1;
2880                                         p->quat[1] *= -1;
2881                                         p->quat[2] *=  1;
2882                                 }
2883 #endif
2884                         }
2885                         animbuffer = p;
2886                         // TODO: allocate bonepose stuff
2887                 }
2888                 else
2889                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2890         }
2891
2892         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights)
2893                 Host_Error("%s: missing required chunks", loadmodel->name);
2894
2895         if (numanims)
2896         {
2897                 loadmodel->numframes = 0;
2898                 for (index = 0;index < numanims;index++)
2899                         loadmodel->numframes += anims[index].numframes;
2900                 if (numanimkeys != numbones * loadmodel->numframes)
2901                         Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2902         }
2903         else
2904                 loadmodel->numframes = loadmodel->num_poses = 1;
2905
2906         meshvertices = numvtxw;
2907         meshtriangles = numfaces;
2908
2909         // load external .skin files if present
2910         skinfiles = Mod_LoadSkinFiles();
2911         if (loadmodel->numskins < 1)
2912                 loadmodel->numskins = 1;
2913         loadmodel->num_bones = numbones;
2914         loadmodel->num_poses = loadmodel->numframes;
2915         loadmodel->submodelsurfaces_start = 0;
2916         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces = nummatts;
2917         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
2918         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
2919         loadmodel->surfmesh.num_vertices = meshvertices;
2920         loadmodel->surfmesh.num_triangles = meshtriangles;
2921
2922         // do most allocations as one merged chunk
2923         // This is only robust for C standard types!
2924         data = (unsigned char *)Mem_Alloc(loadmodel->mempool,
2925                 loadmodel->surfmesh.num_vertices * sizeof(float[3])
2926                 + loadmodel->surfmesh.num_vertices * sizeof(float[3])
2927                 + loadmodel->surfmesh.num_vertices * sizeof(float[3])
2928                 + loadmodel->surfmesh.num_vertices * sizeof(float[3])
2929                 + loadmodel->surfmesh.num_vertices * sizeof(float[2])
2930                 + loadmodel->num_bones * sizeof(float[12])
2931                 + loadmodel->num_surfaces * sizeof(int)
2932                 + loadmodel->surfmesh.num_triangles * sizeof(int[3])
2933                 + loadmodel->surfmesh.num_vertices * sizeof(unsigned short)
2934                 + ((loadmodel->surfmesh.num_vertices <= 65536) ? (loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3])) : 0)
2935                 + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7])
2936                 + loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4])
2937                 + loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]));
2938         // Pointers must be taken in descending order of alignment requirement!
2939         loadmodel->surfmesh.data_vertex3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2940         loadmodel->surfmesh.data_svector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2941         loadmodel->surfmesh.data_tvector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2942         loadmodel->surfmesh.data_normal3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2943         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2944         loadmodel->data_baseboneposeinverse        = (float *)data; data += loadmodel->num_bones * sizeof(float[12]);
2945         loadmodel->modelsurfaces_sorted              = (int *)data; data += loadmodel->num_surfaces * sizeof(int);
2946         loadmodel->surfmesh.data_element3i           = (int *)data; data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
2947         loadmodel->surfmesh.num_blends = 0;
2948         loadmodel->surfmesh.blends        = (unsigned short *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned short);
2949         if (loadmodel->surfmesh.num_vertices <= 65536)
2950         {
2951                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
2952         }
2953         loadmodel->data_poses7s                            = (short *)data; data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
2954         loadmodel->surfmesh.data_skeletalindex4ub  = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
2955         loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
2956         // Struct alignment requirements could change so we can't assume them here
2957         // otherwise a safe-looking commit could introduce undefined behaviour!
2958         loadmodel->data_surfaces = Mem_AllocType(loadmodel->mempool, msurface_t, loadmodel->num_surfaces * sizeof(msurface_t));
2959         loadmodel->data_textures = Mem_AllocType(loadmodel->mempool, texture_t, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
2960         loadmodel->skinscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numskins * sizeof(animscene_t));
2961         loadmodel->data_bones = Mem_AllocType(loadmodel->mempool, aliasbone_t, loadmodel->num_bones * sizeof(aliasbone_t));
2962         loadmodel->animscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numframes * sizeof(animscene_t));
2963         loadmodel->surfmesh.data_blendweights = Mem_AllocType(loadmodel->mempool, blendweights_t, loadmodel->surfmesh.num_vertices * sizeof(blendweights_t));
2964
2965         for (i = 0;i < loadmodel->numskins;i++)
2966         {
2967                 loadmodel->skinscenes[i].firstframe = i;
2968                 loadmodel->skinscenes[i].framecount = 1;
2969                 loadmodel->skinscenes[i].loop = true;
2970                 loadmodel->skinscenes[i].framerate = 10;
2971         }
2972
2973         // create surfaces
2974         for (index = 0, i = 0;index < nummatts;index++)
2975         {
2976                 // since psk models do not have named sections, reuse their shader name as the section name
2977                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2978                 loadmodel->modelsurfaces_sorted[index] = index;
2979                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2980                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2981                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2982         }
2983
2984         // copy over the vertex locations and texcoords
2985         for (index = 0;index < numvtxw;index++)
2986         {
2987                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2988                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2989                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2990                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2991                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2992         }
2993
2994         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2995         for (index = 0;index < numfaces;index++)
2996                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2997         for (index = 0, i = 0;index < nummatts;index++)
2998         {
2999                 loadmodel->data_surfaces[index].num_firsttriangle = i;
3000                 i += loadmodel->data_surfaces[index].num_triangles;
3001                 loadmodel->data_surfaces[index].num_triangles = 0;
3002         }
3003         for (index = 0;index < numfaces;index++)
3004         {
3005                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
3006                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
3007                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
3008                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
3009         }
3010
3011         // copy over the bones
3012         for (index = 0;index < numbones;index++)
3013         {
3014                 dp_strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
3015                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
3016                 if (loadmodel->data_bones[index].parent >= index)
3017                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
3018         }
3019
3020         // convert the basepose data
3021         if (loadmodel->num_bones)
3022         {
3023                 int boneindex;
3024                 matrix4x4_t *basebonepose;
3025                 float *outinvmatrix = loadmodel->data_baseboneposeinverse;
3026                 matrix4x4_t bonematrix;
3027                 matrix4x4_t tempbonematrix;
3028                 basebonepose = (matrix4x4_t *)Mem_Alloc(tempmempool, loadmodel->num_bones * sizeof(matrix4x4_t));
3029                 for (boneindex = 0;boneindex < loadmodel->num_bones;boneindex++)
3030                 {
3031                         Matrix4x4_FromOriginQuat(&bonematrix, bones[boneindex].basepose.origin[0], bones[boneindex].basepose.origin[1], bones[boneindex].basepose.origin[2], bones[boneindex].basepose.quat[0], bones[boneindex].basepose.quat[1], bones[boneindex].basepose.quat[2], bones[boneindex].basepose.quat[3]);
3032                         if (loadmodel->data_bones[boneindex].parent >= 0)
3033                         {
3034                                 tempbonematrix = bonematrix;
3035                                 Matrix4x4_Concat(&bonematrix, basebonepose + loadmodel->data_bones[boneindex].parent, &tempbonematrix);
3036                         }
3037                         basebonepose[boneindex] = bonematrix;
3038                         Matrix4x4_Invert_Simple(&tempbonematrix, basebonepose + boneindex);
3039                         Matrix4x4_ToArray12FloatD3D(&tempbonematrix, outinvmatrix + 12*boneindex);
3040                 }
3041                 Mem_Free(basebonepose);
3042         }
3043
3044         // sort the psk point weights into the vertex weight tables
3045         // (which only accept up to 4 bones per vertex)
3046         for (index = 0;index < numvtxw;index++)
3047         {
3048                 int weightindex[4] = { 0, 0, 0, 0 };
3049                 float weightinfluence[4] = { 0, 0, 0, 0 };
3050                 int l;
3051                 for (j = 0;j < numrawweights;j++)
3052                 {
3053                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
3054                         {
3055                                 int boneindex = rawweights[j].boneindex;
3056                                 float influence = rawweights[j].weight;
3057                                 for (l = 0;l < 4;l++)
3058                                 {
3059                                         if (weightinfluence[l] < influence)
3060                                         {
3061                                                 // move lower influence weights out of the way first
3062                                                 int l2;
3063                                                 for (l2 = 3;l2 > l;l2--)
3064                                                 {
3065                                                         weightinfluence[l2] = weightinfluence[l2-1];
3066                                                         weightindex[l2] = weightindex[l2-1];
3067                                                 }
3068                                                 // store the new weight
3069                                                 weightinfluence[l] = influence;
3070                                                 weightindex[l] = boneindex;
3071                                                 break;
3072                                         }
3073                                 }
3074                         }
3075                 }
3076                 loadmodel->surfmesh.blends[index] = Mod_Skeletal_CompressBlend(loadmodel, weightindex, weightinfluence);
3077                 loadmodel->surfmesh.data_skeletalindex4ub[index*4  ] = weightindex[0];
3078                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+1] = weightindex[1];
3079                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+2] = weightindex[2];
3080                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+3] = weightindex[3];
3081                 loadmodel->surfmesh.data_skeletalweight4ub[index*4  ] = (unsigned char)(weightinfluence[0]*255.0f);
3082                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+1] = (unsigned char)(weightinfluence[1]*255.0f);
3083                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+2] = (unsigned char)(weightinfluence[2]*255.0f);
3084                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+3] = (unsigned char)(weightinfluence[3]*255.0f);
3085         }
3086         if (loadmodel->surfmesh.num_blends < loadmodel->surfmesh.num_vertices)
3087                 loadmodel->surfmesh.data_blendweights = Mem_ReallocType(loadmodel->mempool, loadmodel->surfmesh.data_blendweights, blendweights_t, loadmodel->surfmesh.num_blends * sizeof(blendweights_t));
3088
3089         // set up the animscenes based on the anims
3090         if (numanims)
3091         {
3092                 for (index = 0, i = 0;index < numanims;index++)
3093                 {
3094                         for (j = 0;j < anims[index].numframes;j++, i++)
3095                         {
3096                                 dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
3097                                 loadmodel->animscenes[i].firstframe = i;
3098                                 loadmodel->animscenes[i].framecount = 1;
3099                                 loadmodel->animscenes[i].loop = true;
3100                                 loadmodel->animscenes[i].framerate = anims[index].fps;
3101                         }
3102                 }
3103                 // calculate the scaling value for bone origins so they can be compressed to short
3104                 biggestorigin = 0;
3105                 for (index = 0;index < numanimkeys;index++)
3106                 {
3107                         pskanimkeys_t *k = animkeys + index;
3108                         biggestorigin = max(biggestorigin, fabs(k->origin[0]));
3109                         biggestorigin = max(biggestorigin, fabs(k->origin[1]));
3110                         biggestorigin = max(biggestorigin, fabs(k->origin[2]));
3111                 }
3112                 loadmodel->num_posescale = biggestorigin / 32767.0f;
3113                 if (loadmodel->num_posescale == 0) // don't divide by zero
3114                         loadmodel->num_posescale = 1.0;
3115                 loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3116
3117                 // load the poses from the animkeys
3118                 for (index = 0;index < numanimkeys;index++)
3119                 {
3120                         pskanimkeys_t *k = animkeys + index;
3121                         float quat[4];
3122                         Vector4Copy(k->quat, quat);
3123                         if (quat[3] > 0)
3124                                 Vector4Negate(quat, quat);
3125                         Vector4Normalize2(quat, quat);
3126                         // compress poses to the short[7] format for longterm storage
3127                         loadmodel->data_poses7s[index*7+0] = k->origin[0] * loadmodel->num_poseinvscale;
3128                         loadmodel->data_poses7s[index*7+1] = k->origin[1] * loadmodel->num_poseinvscale;
3129                         loadmodel->data_poses7s[index*7+2] = k->origin[2] * loadmodel->num_poseinvscale;
3130                         loadmodel->data_poses7s[index*7+3] = quat[0] * 32767.0f;
3131                         loadmodel->data_poses7s[index*7+4] = quat[1] * 32767.0f;
3132                         loadmodel->data_poses7s[index*7+5] = quat[2] * 32767.0f;
3133                         loadmodel->data_poses7s[index*7+6] = quat[3] * 32767.0f;
3134                 }
3135         }
3136         else
3137         {
3138                 dp_strlcpy(loadmodel->animscenes[0].name, "base", sizeof(loadmodel->animscenes[0].name));
3139                 loadmodel->animscenes[0].firstframe = 0;
3140                 loadmodel->animscenes[0].framecount = 1;
3141                 loadmodel->animscenes[0].loop = true;
3142                 loadmodel->animscenes[0].framerate = 10;
3143
3144                 // calculate the scaling value for bone origins so they can be compressed to short
3145                 biggestorigin = 0;
3146                 for (index = 0;index < numbones;index++)
3147                 {
3148                         pskboneinfo_t *p = bones + index;
3149                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[0]));
3150                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[1]));
3151                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[2]));
3152                 }
3153                 loadmodel->num_posescale = biggestorigin / 32767.0f;
3154                 if (loadmodel->num_posescale == 0) // don't divide by zero
3155                         loadmodel->num_posescale = 1.0;
3156                 loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3157
3158                 // load the basepose as a frame
3159                 for (index = 0;index < numbones;index++)
3160                 {
3161                         pskboneinfo_t *p = bones + index;
3162                         float quat[4];
3163                         Vector4Copy(p->basepose.quat, quat);
3164                         if (quat[3] > 0)
3165                                 Vector4Negate(quat, quat);
3166                         Vector4Normalize2(quat, quat);
3167                         // compress poses to the short[7] format for longterm storage
3168                         loadmodel->data_poses7s[index*7+0] = p->basepose.origin[0] * loadmodel->num_poseinvscale;
3169                         loadmodel->data_poses7s[index*7+1] = p->basepose.origin[1] * loadmodel->num_poseinvscale;
3170                         loadmodel->data_poses7s[index*7+2] = p->basepose.origin[2] * loadmodel->num_poseinvscale;
3171                         loadmodel->data_poses7s[index*7+3] = quat[0] * 32767.0f;
3172                         loadmodel->data_poses7s[index*7+4] = quat[1] * 32767.0f;
3173                         loadmodel->data_poses7s[index*7+5] = quat[2] * 32767.0f;
3174                         loadmodel->data_poses7s[index*7+6] = quat[3] * 32767.0f;
3175                 }
3176         }
3177
3178         Mod_FreeSkinFiles(skinfiles);
3179         if (animfilebuffer)
3180                 Mem_Free(animfilebuffer);
3181         Mod_MakeSortedSurfaces(loadmodel);
3182
3183         // compute all the mesh information that was not loaded from the file
3184         // TODO: honor smoothing groups somehow?
3185         if (loadmodel->surfmesh.data_element3s)
3186                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
3187                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
3188         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
3189         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);
3190         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);
3191         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
3192         if(mod_alias_force_animated.string[0])
3193                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
3194
3195         // Always make a BIH for the first frame, we can use it where possible.
3196         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
3197         if (!loadmodel->surfmesh.isanimated)
3198         {
3199                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
3200                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
3201                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
3202                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
3203                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
3204         }
3205 }
3206
3207 void Mod_INTERQUAKEMODEL_Load(model_t *mod, void *buffer, void *bufferend)
3208 {
3209         unsigned char *data;
3210         const char *text;
3211         const unsigned char *pbase, *pend;
3212         iqmheader_t header;
3213         skinfile_t *skinfiles;
3214         int i, j, k;
3215         float biggestorigin;
3216         const unsigned int *inelements;
3217         int *outelements;
3218         float *outvertex, *outnormal, *outtexcoord, *outsvector, *outtvector, *outcolor;
3219         // this pointers into the file data are read only through Little* functions so they can be unaligned memory
3220         const float *vnormal = NULL;
3221         const float *vposition = NULL;
3222         const float *vtangent = NULL;
3223         const float *vtexcoord = NULL;
3224         const float *vcolor4f = NULL;
3225         const unsigned char *vblendindexes = NULL;
3226         const unsigned char *vblendweights = NULL;
3227         const unsigned char *vcolor4ub = NULL;
3228         const unsigned short *framedata = NULL;
3229         // temporary memory allocations (because the data in the file may be misaligned)
3230         iqmanim_t *anims = NULL;
3231         iqmbounds_t *bounds = NULL;
3232         iqmjoint1_t *joint1 = NULL;
3233         iqmjoint_t *joint = NULL;
3234         iqmmesh_t *meshes = NULL;
3235         iqmpose1_t *pose1 = NULL;
3236         iqmpose_t *pose = NULL;
3237         iqmvertexarray_t *vas = NULL;
3238
3239         pbase = (unsigned char *)buffer;
3240         pend = (unsigned char *)bufferend;
3241
3242         if (pbase + sizeof(iqmheader_t) > pend)
3243                 Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model %d", loadmodel->name, (int)(pend - pbase));
3244
3245         // copy struct (otherwise it may be misaligned)
3246         // LadyHavoc: okay it's definitely not misaligned here, but for consistency...
3247         memcpy(&header, pbase, sizeof(iqmheader_t));
3248
3249         if (memcmp(header.id, "INTERQUAKEMODEL", 16))
3250                 Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model", loadmodel->name);
3251         if (LittleLong(header.version) != 1 && LittleLong(header.version) != 2)
3252                 Host_Error ("Mod_INTERQUAKEMODEL_Load: only version 1 and 2 models are currently supported (name = %s)", loadmodel->name);
3253
3254         loadmodel->modeldatatypestring = "IQM";
3255
3256         loadmodel->type = mod_alias;
3257         loadmodel->synctype = ST_RAND;
3258
3259         // byteswap header
3260         header.version = LittleLong(header.version);
3261         header.filesize = LittleLong(header.filesize);
3262         header.flags = LittleLong(header.flags);
3263         header.num_text = LittleLong(header.num_text);
3264         header.ofs_text = LittleLong(header.ofs_text);
3265         header.num_meshes = LittleLong(header.num_meshes);
3266         header.ofs_meshes = LittleLong(header.ofs_meshes);
3267         header.num_vertexarrays = LittleLong(header.num_vertexarrays);
3268         header.num_vertexes = LittleLong(header.num_vertexes);
3269         header.ofs_vertexarrays = LittleLong(header.ofs_vertexarrays);
3270         header.num_triangles = LittleLong(header.num_triangles);
3271         header.ofs_triangles = LittleLong(header.ofs_triangles);
3272         header.ofs_neighbors = LittleLong(header.ofs_neighbors);
3273         header.num_joints = LittleLong(header.num_joints);
3274         header.ofs_joints = LittleLong(header.ofs_joints);
3275         header.num_poses = LittleLong(header.num_poses);
3276         header.ofs_poses = LittleLong(header.ofs_poses);
3277         header.num_anims = LittleLong(header.num_anims);
3278         header.ofs_anims = LittleLong(header.ofs_anims);
3279         header.num_frames = LittleLong(header.num_frames);
3280         header.num_framechannels = LittleLong(header.num_framechannels);
3281         header.ofs_frames = LittleLong(header.ofs_frames);
3282         header.ofs_bounds = LittleLong(header.ofs_bounds);
3283         header.num_comment = LittleLong(header.num_comment);
3284         header.ofs_comment = LittleLong(header.ofs_comment);
3285         header.num_extensions = LittleLong(header.num_extensions);
3286         header.ofs_extensions = LittleLong(header.ofs_extensions);
3287
3288         if (header.version == 1)
3289         {
3290                 if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint1_t) > pend ||
3291                         pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose1_t) > pend)
3292                 {
3293                         Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3294                         return;
3295                 }
3296         }
3297         else
3298         {
3299                 if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint_t) > pend ||
3300                         pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose_t) > pend)
3301                 {
3302                         Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3303                         return;
3304                 }
3305         }
3306         if (pbase + header.ofs_text + header.num_text > pend ||
3307                 pbase + header.ofs_meshes + header.num_meshes*sizeof(iqmmesh_t) > pend ||
3308                 pbase + header.ofs_vertexarrays + header.num_vertexarrays*sizeof(iqmvertexarray_t) > pend ||
3309                 pbase + header.ofs_triangles + header.num_triangles*sizeof(int[3]) > pend ||
3310                 (header.ofs_neighbors && pbase + header.ofs_neighbors + header.num_triangles*sizeof(int[3]) > pend) ||
3311                 pbase + header.ofs_anims + header.num_anims*sizeof(iqmanim_t) > pend ||
3312                 pbase + header.ofs_frames + header.num_frames*header.num_framechannels*sizeof(unsigned short) > pend ||
3313                 (header.ofs_bounds && pbase + header.ofs_bounds + header.num_frames*sizeof(iqmbounds_t) > pend) ||
3314                 pbase + header.ofs_comment + header.num_comment > pend)
3315         {
3316                 Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3317                 return;
3318         }
3319
3320         // Structs will be copied for alignment in memory, otherwise we crash on Sparc, PowerPC and others
3321         // and get big spam from UBSan, because these offsets may not be aligned.
3322         if (header.num_vertexarrays)
3323                 vas = (iqmvertexarray_t *)(pbase + header.ofs_vertexarrays);
3324         if (header.num_anims)
3325                 anims = (iqmanim_t *)(pbase + header.ofs_anims);
3326         if (header.ofs_bounds)
3327                 bounds = (iqmbounds_t *)(pbase + header.ofs_bounds);
3328         if (header.num_meshes)
3329                 meshes = (iqmmesh_t *)(pbase + header.ofs_meshes);
3330
3331         for (i = 0;i < (int)header.num_vertexarrays;i++)
3332         {
3333                 iqmvertexarray_t va;
3334                 size_t vsize;
3335
3336                 memcpy(&va, &vas[i], sizeof(iqmvertexarray_t));
3337                 va.type = LittleLong(va.type);
3338                 va.flags = LittleLong(va.flags);
3339                 va.format = LittleLong(va.format);
3340                 va.size = LittleLong(va.size);
3341                 va.offset = LittleLong(va.offset);
3342                 vsize = header.num_vertexes*va.size;
3343                 switch (va.format)
3344                 {
3345                 case IQM_FLOAT: vsize *= sizeof(float); break;
3346                 case IQM_UBYTE: vsize *= sizeof(unsigned char); break;
3347                 default: continue;
3348                 }
3349                 if (pbase + va.offset + vsize > pend)
3350                         continue;
3351                 // no need to copy the vertex data for alignment because LittleLong/LittleShort will be invoked on reading them, and the destination is aligned
3352                 switch (va.type)
3353                 {
3354                 case IQM_POSITION:
3355                         if (va.format == IQM_FLOAT && va.size == 3)
3356                                 vposition = (const float *)(pbase + va.offset);
3357                         break;
3358                 case IQM_TEXCOORD:
3359                         if (va.format == IQM_FLOAT && va.size == 2)
3360                                 vtexcoord = (const float *)(pbase + va.offset);
3361                         break;
3362                 case IQM_NORMAL:
3363                         if (va.format == IQM_FLOAT && va.size == 3)
3364                                 vnormal = (const float *)(pbase + va.offset);
3365                         break;
3366                 case IQM_TANGENT:
3367                         if (va.format == IQM_FLOAT && va.size == 4)
3368                                 vtangent = (const float *)(pbase + va.offset);
3369                         break;
3370                 case IQM_BLENDINDEXES:
3371                         if (va.format == IQM_UBYTE && va.size == 4)
3372                                 vblendindexes = (const unsigned char *)(pbase + va.offset);
3373                         break;
3374                 case IQM_BLENDWEIGHTS:
3375                         if (va.format == IQM_UBYTE && va.size == 4)
3376                                 vblendweights = (const unsigned char *)(pbase + va.offset);
3377                         break;
3378                 case IQM_COLOR:
3379                         if (va.format == IQM_FLOAT && va.size == 4)
3380                                 vcolor4f = (const float *)(pbase + va.offset);
3381                         if (va.format == IQM_UBYTE && va.size == 4)
3382                                 vcolor4ub = (const unsigned char *)(pbase + va.offset);
3383                         break;
3384                 }
3385         }
3386         if (header.num_vertexes > 0 && (!vposition || !vtexcoord || ((header.num_frames > 0 || header.num_anims > 0) && (!vblendindexes || !vblendweights))))
3387         {
3388                 Con_Printf("%s is missing vertex array data\n", loadmodel->name);
3389                 return;
3390         }
3391
3392         text = header.num_text && header.ofs_text ? (const char *)(pbase + header.ofs_text) : "";
3393
3394         loadmodel->Draw = R_Mod_Draw;
3395         loadmodel->DrawDepth = R_Mod_DrawDepth;
3396         loadmodel->DrawDebug = R_Mod_DrawDebug;
3397         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
3398         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
3399         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
3400         loadmodel->DrawLight = R_Mod_DrawLight;
3401         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
3402         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
3403         loadmodel->PointSuperContents = NULL;
3404         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
3405
3406         // load external .skin files if present
3407         skinfiles = Mod_LoadSkinFiles();
3408         if (loadmodel->numskins < 1)
3409                 loadmodel->numskins = 1;
3410
3411         loadmodel->numframes = max(header.num_anims, 1);
3412         loadmodel->num_bones = header.num_joints;
3413         loadmodel->num_poses = max(header.num_frames, 1);
3414         loadmodel->submodelsurfaces_start = 0;
3415         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces = header.num_meshes;
3416         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
3417         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
3418         loadmodel->surfmesh.num_vertices = header.num_vertexes;
3419         loadmodel->surfmesh.num_triangles = header.num_triangles;
3420
3421         // do most allocations as one merged chunk
3422         // This is only robust for C standard types!
3423         data = (unsigned char *)Mem_Alloc(loadmodel->mempool,
3424                 loadmodel->surfmesh.num_vertices * (sizeof(float[14]) + (vcolor4f || vcolor4ub ? sizeof(float[4]) : 0))
3425                 + loadmodel->num_bones * sizeof(float[12])
3426                 + loadmodel->num_surfaces * sizeof(int)
3427                 + loadmodel->surfmesh.num_triangles * sizeof(int[3])
3428                 + (loadmodel->surfmesh.num_vertices <= 65536 ? loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]) : 0)
3429                 + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7])
3430                 + (vblendindexes && vblendweights ? loadmodel->surfmesh.num_vertices * (sizeof(unsigned short) + sizeof(unsigned char[2][4])) : 0));
3431         // Pointers must be taken in descending order of alignment requirement!
3432         loadmodel->surfmesh.data_vertex3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3433         loadmodel->surfmesh.data_svector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3434         loadmodel->surfmesh.data_tvector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3435         loadmodel->surfmesh.data_normal3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3436         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
3437         if (vcolor4f || vcolor4ub)
3438         {
3439                 loadmodel->surfmesh.data_lightmapcolor4f = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
3440         }
3441         loadmodel->data_baseboneposeinverse = (float *)data; data += loadmodel->num_bones * sizeof(float[12]);
3442         loadmodel->modelsurfaces_sorted       = (int *)data; data += loadmodel->num_surfaces * sizeof(int);
3443         loadmodel->surfmesh.data_element3i    = (int *)data; data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
3444         loadmodel->data_poses7s             = (short *)data; data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
3445         if (loadmodel->surfmesh.num_vertices <= 65536)
3446         {
3447                 loadmodel->surfmesh.data_element3s = (unsigned short *)data; data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
3448         }
3449         if (vblendindexes && vblendweights)
3450         {
3451                 loadmodel->surfmesh.num_blends = 0;
3452                 loadmodel->surfmesh.blends                = (unsigned short *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned short);
3453                 loadmodel->surfmesh.data_skeletalindex4ub  = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
3454                 loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
3455         }
3456         // Struct alignment requirements could change so we can't assume them here
3457         // otherwise a safe-looking commit could introduce undefined behaviour!
3458         loadmodel->data_surfaces = Mem_AllocType(loadmodel->mempool, msurface_t, loadmodel->num_surfaces * sizeof(msurface_t));
3459         loadmodel->data_textures = Mem_AllocType(loadmodel->mempool, texture_t, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
3460         loadmodel->skinscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numskins * sizeof(animscene_t));
3461         loadmodel->data_bones = Mem_AllocType(loadmodel->mempool, aliasbone_t, loadmodel->num_bones * sizeof(aliasbone_t));
3462         loadmodel->animscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numframes * sizeof(animscene_t));
3463         if (vblendindexes && vblendweights)
3464                 loadmodel->surfmesh.data_blendweights = Mem_AllocType(loadmodel->mempool, blendweights_t, loadmodel->surfmesh.num_vertices * sizeof(blendweights_t));
3465
3466         for (i = 0;i < loadmodel->numskins;i++)
3467         {
3468                 loadmodel->skinscenes[i].firstframe = i;
3469                 loadmodel->skinscenes[i].framecount = 1;
3470                 loadmodel->skinscenes[i].loop = true;
3471                 loadmodel->skinscenes[i].framerate = 10;
3472         }
3473
3474         // load the bone info
3475         if (header.version == 1)
3476         {
3477                 iqmjoint1_t *injoints1 = (iqmjoint1_t *)(pbase + header.ofs_joints);
3478
3479                 if (loadmodel->num_bones)
3480                         joint1 = (iqmjoint1_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint1_t));
3481                 for (i = 0;i < loadmodel->num_bones;i++)
3482                 {
3483                         matrix4x4_t relbase, relinvbase, pinvbase, invbase;
3484                         iqmjoint1_t injoint1;
3485
3486                         memcpy(&injoint1, &injoints1[i], sizeof(iqmjoint1_t));
3487                         joint1[i].name = LittleLong(injoint1.name);
3488                         joint1[i].parent = LittleLong(injoint1.parent);
3489                         for (j = 0;j < 3;j++)
3490                         {
3491                                 joint1[i].origin[j] = LittleFloat(injoint1.origin[j]);
3492                                 joint1[i].rotation[j] = LittleFloat(injoint1.rotation[j]);
3493                                 joint1[i].scale[j] = LittleFloat(injoint1.scale[j]);
3494                         }
3495                         dp_strlcpy(loadmodel->data_bones[i].name, &text[joint1[i].name], sizeof(loadmodel->data_bones[i].name));
3496                         loadmodel->data_bones[i].parent = joint1[i].parent;
3497                         if (loadmodel->data_bones[i].parent >= i)
3498                                 Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
3499                         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]);
3500                         Matrix4x4_Invert_Simple(&relinvbase, &relbase);
3501                         if (loadmodel->data_bones[i].parent >= 0)
3502                         {
3503                                 Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
3504                                 Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
3505                                 Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
3506                         }
3507                         else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
3508                 }
3509         }
3510         else
3511         {
3512                 iqmjoint_t *injoints = (iqmjoint_t *)(pbase + header.ofs_joints);
3513
3514                 if (header.num_joints)
3515                         joint = (iqmjoint_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint_t));
3516                 for (i = 0;i < loadmodel->num_bones;i++)
3517                 {
3518                         matrix4x4_t relbase, relinvbase, pinvbase, invbase;
3519                         iqmjoint_t injoint;
3520
3521                         memcpy(&injoint, &injoints[i], sizeof(iqmjoint_t));
3522                         joint[i].name = LittleLong(injoint.name);
3523                         joint[i].parent = LittleLong(injoint.parent);
3524                         for (j = 0;j < 3;j++)
3525                         {
3526                                 joint[i].origin[j] = LittleFloat(injoint.origin[j]);
3527                                 joint[i].rotation[j] = LittleFloat(injoint.rotation[j]);
3528                                 joint[i].scale[j] = LittleFloat(injoint.scale[j]);
3529                         }
3530                         joint[i].rotation[3] = LittleFloat(injoint.rotation[3]);
3531                         dp_strlcpy(loadmodel->data_bones[i].name, &text[joint[i].name], sizeof(loadmodel->data_bones[i].name));
3532                         loadmodel->data_bones[i].parent = joint[i].parent;
3533                         if (loadmodel->data_bones[i].parent >= i)
3534                                 Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
3535                         if (joint[i].rotation[3] > 0)
3536                                 Vector4Negate(joint[i].rotation, joint[i].rotation);
3537                         Vector4Normalize2(joint[i].rotation, joint[i].rotation);
3538                         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]);
3539                         Matrix4x4_Invert_Simple(&relinvbase, &relbase);
3540                         if (loadmodel->data_bones[i].parent >= 0)
3541                         {
3542                                 Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
3543                                 Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
3544                                 Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
3545                         }
3546                         else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
3547                 }
3548         }
3549
3550         // set up the animscenes based on the anims
3551         for (i = 0;i < (int)header.num_anims;i++)
3552         {
3553                 iqmanim_t anim;
3554
3555                 memcpy(&anim, &anims[i], sizeof(iqmanim_t));
3556                 anim.name = LittleLong(anim.name);
3557                 anim.first_frame = LittleLong(anim.first_frame);
3558                 anim.num_frames = LittleLong(anim.num_frames);
3559                 anim.framerate = LittleFloat(anim.framerate);
3560                 anim.flags = LittleLong(anim.flags);
3561                 dp_strlcpy(loadmodel->animscenes[i].name, &text[anim.name], sizeof(loadmodel->animscenes[i].name));
3562                 loadmodel->animscenes[i].firstframe = anim.first_frame;
3563                 loadmodel->animscenes[i].framecount = anim.num_frames;
3564                 loadmodel->animscenes[i].loop = ((anim.flags & IQM_LOOP) != 0);
3565                 loadmodel->animscenes[i].framerate = anim.framerate;
3566         }
3567         if (header.num_anims <= 0)
3568         {
3569                 dp_strlcpy(loadmodel->animscenes[0].name, "static", sizeof(loadmodel->animscenes[0].name));
3570                 loadmodel->animscenes[0].firstframe = 0;
3571                 loadmodel->animscenes[0].framecount = 1;
3572                 loadmodel->animscenes[0].loop = true;
3573                 loadmodel->animscenes[0].framerate = 10;
3574         }
3575
3576         loadmodel->surfmesh.isanimated = loadmodel->num_bones > 1 || loadmodel->numframes > 1 || (loadmodel->animscenes && loadmodel->animscenes[0].framecount > 1);
3577         if(mod_alias_force_animated.string[0])
3578                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
3579
3580         biggestorigin = 0;
3581         if (header.version == 1)
3582         {
3583                 iqmpose1_t *inposes1 = (iqmpose1_t *)(pbase + header.ofs_poses);
3584
3585                 if (header.num_poses)
3586                         pose1 = (iqmpose1_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose1_t));
3587                 for (i = 0;i < (int)header.num_poses;i++)
3588                 {
3589                         float f;
3590                         iqmpose1_t inpose;
3591
3592                         memcpy(&inpose, &inposes1[i], sizeof(iqmpose1_t));
3593                         pose1[i].parent = LittleLong(inpose.parent);
3594                         pose1[i].channelmask = LittleLong(inpose.channelmask);
3595                         for (j = 0;j < 9;j++)
3596                         {
3597                                 pose1[i].channeloffset[j] = LittleFloat(inpose.channeloffset[j]);
3598                                 pose1[i].channelscale[j] = LittleFloat(inpose.channelscale[j]);
3599                         }
3600                         f = fabs(pose1[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
3601                         f = fabs(pose1[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
3602                         f = fabs(pose1[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
3603                         f = fabs(pose1[i].channeloffset[0] + 0xFFFF*pose1[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
3604                         f = fabs(pose1[i].channeloffset[1] + 0xFFFF*pose1[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
3605                         f = fabs(pose1[i].channeloffset[2] + 0xFFFF*pose1[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
3606                 }
3607                 if (header.num_frames <= 0)
3608                 {
3609                         for (i = 0;i < loadmodel->num_bones;i++)
3610                         {
3611                                 float f;
3612                                 f = fabs(joint1[i].origin[0]); biggestorigin = max(biggestorigin, f);
3613                                 f = fabs(joint1[i].origin[1]); biggestorigin = max(biggestorigin, f);
3614                                 f = fabs(joint1[i].origin[2]); biggestorigin = max(biggestorigin, f);
3615                         }
3616                 }
3617         }
3618         else
3619         {
3620                 iqmpose_t *inposes = (iqmpose_t *)(pbase + header.ofs_poses);
3621
3622                 if (header.num_poses)
3623                         pose = (iqmpose_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose_t));
3624                 for (i = 0;i < (int)header.num_poses;i++)
3625                 {
3626                         float f;
3627                         iqmpose_t inpose;
3628
3629                         memcpy(&inpose, &inposes[i], sizeof(iqmpose_t));
3630                         pose[i].parent = LittleLong(inpose.parent);
3631                         pose[i].channelmask = LittleLong(inpose.channelmask);
3632                         for (j = 0;j < 10;j++)
3633                         {
3634                                 pose[i].channeloffset[j] = LittleFloat(inpose.channeloffset[j]);
3635                                 pose[i].channelscale[j] = LittleFloat(inpose.channelscale[j]);
3636                         }
3637                         f = fabs(pose[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
3638                         f = fabs(pose[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
3639                         f = fabs(pose[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
3640                         f = fabs(pose[i].channeloffset[0] + 0xFFFF*pose[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
3641                         f = fabs(pose[i].channeloffset[1] + 0xFFFF*pose[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
3642                         f = fabs(pose[i].channeloffset[2] + 0xFFFF*pose[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
3643                 }
3644                 if (header.num_frames <= 0)
3645                 {
3646                         for (i = 0;i < loadmodel->num_bones;i++)
3647                         {
3648                                 float f;
3649                                 f = fabs(joint[i].origin[0]); biggestorigin = max(biggestorigin, f);
3650                                 f = fabs(joint[i].origin[1]); biggestorigin = max(biggestorigin, f);
3651                                 f = fabs(joint[i].origin[2]); biggestorigin = max(biggestorigin, f);
3652                         }
3653                 }
3654         }
3655         loadmodel->num_posescale = biggestorigin / 32767.0f;
3656         loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3657
3658         // load the pose data
3659         // this unaligned memory access is safe (LittleShort reads as bytes)
3660         framedata = (const unsigned short *)(pbase + header.ofs_frames);
3661         if (header.version == 1)
3662         {
3663                 for (i = 0, k = 0;i < (int)header.num_frames;i++)
3664                 {
3665                         for (j = 0;j < (int)header.num_poses;j++, k++)
3666                         {
3667                                 float qx, qy, qz, qw;
3668                                 loadmodel->data_poses7s[k*7 + 0] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[0] + (pose1[j].channelmask&1 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[0] : 0));
3669                                 loadmodel->data_poses7s[k*7 + 1] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[1] + (pose1[j].channelmask&2 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[1] : 0));
3670                                 loadmodel->data_poses7s[k*7 + 2] = loadmodel->num_poseinvscale * (pose1[j].channeloffset[2] + (pose1[j].channelmask&4 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[2] : 0));
3671                                 qx = pose1[j].channeloffset[3] + (pose1[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[3] : 0);
3672                                 qy = pose1[j].channeloffset[4] + (pose1[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[4] : 0);
3673                                 qz = pose1[j].channeloffset[5] + (pose1[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[5] : 0);
3674                                 qw = 1.0f - (qx*qx + qy*qy + qz*qz);
3675                                 qw = qw > 0.0f ? -sqrt(qw) : 0.0f;
3676                                 loadmodel->data_poses7s[k*7 + 3] = 32767.0f * qx;
3677                                 loadmodel->data_poses7s[k*7 + 4] = 32767.0f * qy;
3678                                 loadmodel->data_poses7s[k*7 + 5] = 32767.0f * qz;
3679                                 loadmodel->data_poses7s[k*7 + 6] = 32767.0f * qw;
3680                                 // skip scale data for now
3681                                 if(pose1[j].channelmask&64) framedata++;
3682                                 if(pose1[j].channelmask&128) framedata++;
3683                                 if(pose1[j].channelmask&256) framedata++;
3684                         }
3685                 }
3686                 if (header.num_frames <= 0)
3687                 {
3688                         for (i = 0;i < loadmodel->num_bones;i++)
3689                         {
3690                                 float qx, qy, qz, qw;
3691                                 loadmodel->data_poses7s[i*7 + 0] = loadmodel->num_poseinvscale * joint1[i].origin[0];
3692                                 loadmodel->data_poses7s[i*7 + 1] = loadmodel->num_poseinvscale * joint1[i].origin[1];
3693                                 loadmodel->data_poses7s[i*7 + 2] = loadmodel->num_poseinvscale * joint1[i].origin[2];
3694                                 qx = joint1[i].rotation[0];
3695                                 qy = joint1[i].rotation[1];
3696                                 qz = joint1[i].rotation[2];
3697                                 qw = 1.0f - (qx*qx + qy*qy + qz*qz);
3698                                 qw = qw > 0.0f ? -sqrt(qw) : 0.0f;
3699                                 loadmodel->data_poses7s[i*7 + 3] = 32767.0f * qx;
3700                                 loadmodel->data_poses7s[i*7 + 4] = 32767.0f * qy;
3701                                 loadmodel->data_poses7s[i*7 + 5] = 32767.0f * qz;
3702                                 loadmodel->data_poses7s[i*7 + 6] = 32767.0f * qw;
3703                         }
3704                 }
3705         }
3706         else
3707         {
3708                 for (i = 0, k = 0;i < (int)header.num_frames;i++)
3709                 {
3710                         for (j = 0;j < (int)header.num_poses;j++, k++)
3711                         {
3712                                 float rot[4];
3713                                 loadmodel->data_poses7s[k*7 + 0] = loadmodel->num_poseinvscale * (pose[j].channeloffset[0] + (pose[j].channelmask&1 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[0] : 0));
3714                                 loadmodel->data_poses7s[k*7 + 1] = loadmodel->num_poseinvscale * (pose[j].channeloffset[1] + (pose[j].channelmask&2 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[1] : 0));
3715                                 loadmodel->data_poses7s[k*7 + 2] = loadmodel->num_poseinvscale * (pose[j].channeloffset[2] + (pose[j].channelmask&4 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[2] : 0));
3716                                 rot[0] = pose[j].channeloffset[3] + (pose[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[3] : 0);
3717                                 rot[1] = pose[j].channeloffset[4] + (pose[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[4] : 0);
3718                                 rot[2] = pose[j].channeloffset[5] + (pose[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[5] : 0);
3719                                 rot[3] = pose[j].channeloffset[6] + (pose[j].channelmask&64 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[6] : 0);
3720                                 if (rot[3] > 0)
3721                                         Vector4Negate(rot, rot);
3722                                 Vector4Normalize2(rot, rot);
3723                                 loadmodel->data_poses7s[k*7 + 3] = 32767.0f * rot[0];
3724                                 loadmodel->data_poses7s[k*7 + 4] = 32767.0f * rot[1];
3725                                 loadmodel->data_poses7s[k*7 + 5] = 32767.0f * rot[2];
3726                                 loadmodel->data_poses7s[k*7 + 6] = 32767.0f * rot[3];
3727                                 // skip scale data for now
3728                                 if(pose[j].channelmask&128) framedata++;
3729                                 if(pose[j].channelmask&256) framedata++;
3730                                 if(pose[j].channelmask&512) framedata++;
3731                         }
3732                 }
3733                 if (header.num_frames <= 0)
3734                 {
3735                         for (i = 0;i < loadmodel->num_bones;i++)
3736                         {
3737                                 loadmodel->data_poses7s[i*7 + 0] = loadmodel->num_poseinvscale * joint[i].origin[0];
3738                                 loadmodel->data_poses7s[i*7 + 1] = loadmodel->num_poseinvscale * joint[i].origin[1];
3739                                 loadmodel->data_poses7s[i*7 + 2] = loadmodel->num_poseinvscale * joint[i].origin[2];
3740                                 loadmodel->data_poses7s[i*7 + 3] = 32767.0f * joint[i].rotation[0];
3741                                 loadmodel->data_poses7s[i*7 + 4] = 32767.0f * joint[i].rotation[1];
3742                                 loadmodel->data_poses7s[i*7 + 5] = 32767.0f * joint[i].rotation[2];
3743                                 loadmodel->data_poses7s[i*7 + 6] = 32767.0f * joint[i].rotation[3];
3744                         }
3745                 }
3746         }
3747
3748         // load bounding box data
3749         if (header.ofs_bounds)
3750         {
3751                 float xyradius = 0, radius = 0;
3752                 VectorClear(loadmodel->normalmins);
3753                 VectorClear(loadmodel->normalmaxs);
3754                 for (i = 0; i < (int)header.num_frames;i++)
3755                 {
3756                         iqmbounds_t bound;
3757                         bound.mins[0] = LittleFloat(bounds[i].mins[0]);
3758                         bound.mins[1] = LittleFloat(bounds[i].mins[1]);
3759                         bound.mins[2] = LittleFloat(bounds[i].mins[2]);
3760                         bound.maxs[0] = LittleFloat(bounds[i].maxs[0]);
3761                         bound.maxs[1] = LittleFloat(bounds[i].maxs[1]);
3762                         bound.maxs[2] = LittleFloat(bounds[i].maxs[2]);
3763                         bound.xyradius = LittleFloat(bounds[i].xyradius);
3764                         bound.radius = LittleFloat(bounds[i].radius);
3765                         if (!i)
3766                         {
3767                                 VectorCopy(bound.mins, loadmodel->normalmins);
3768                                 VectorCopy(bound.maxs, loadmodel->normalmaxs);
3769                         }
3770                         else
3771                         {
3772                                 if (loadmodel->normalmins[0] > bound.mins[0]) loadmodel->normalmins[0] = bound.mins[0];
3773                                 if (loadmodel->normalmins[1] > bound.mins[1]) loadmodel->normalmins[1] = bound.mins[1];
3774                                 if (loadmodel->normalmins[2] > bound.mins[2]) loadmodel->normalmins[2] = bound.mins[2];
3775                                 if (loadmodel->normalmaxs[0] < bound.maxs[0]) loadmodel->normalmaxs[0] = bound.maxs[0];
3776                                 if (loadmodel->normalmaxs[1] < bound.maxs[1]) loadmodel->normalmaxs[1] = bound.maxs[1];
3777                                 if (loadmodel->normalmaxs[2] < bound.maxs[2]) loadmodel->normalmaxs[2] = bound.maxs[2];
3778                         }
3779                         if (bound.xyradius > xyradius)
3780                                 xyradius = bound.xyradius;
3781                         if (bound.radius > radius)
3782                                 radius = bound.radius;
3783                 }
3784                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -xyradius;
3785                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = xyradius;
3786                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
3787                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
3788                 loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
3789                 loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
3790                 loadmodel->radius = radius;
3791                 loadmodel->radius2 = radius * radius;
3792         }
3793
3794         // load triangle data
3795         // this unaligned memory access is safe (LittleLong reads as bytes)
3796         inelements = (const unsigned int *)(pbase + header.ofs_triangles);
3797         outelements = loadmodel->surfmesh.data_element3i;
3798         for (i = 0;i < (int)header.num_triangles;i++)
3799         {
3800                 outelements[0] = LittleLong(inelements[0]);
3801                 outelements[1] = LittleLong(inelements[1]);
3802                 outelements[2] = LittleLong(inelements[2]);
3803                 outelements += 3;
3804                 inelements += 3;
3805         }
3806         if (loadmodel->surfmesh.data_element3s)
3807                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
3808                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
3809         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, header.num_vertexes, __FILE__, __LINE__);
3810
3811         // load vertex data
3812         // this unaligned memory access is safe (LittleFloat reads as bytes)
3813         outvertex = loadmodel->surfmesh.data_vertex3f;
3814         for (i = 0;i < (int)header.num_vertexes;i++)
3815         {
3816                 outvertex[0] = LittleFloat(vposition[0]);
3817                 outvertex[1] = LittleFloat(vposition[1]);
3818                 outvertex[2] = LittleFloat(vposition[2]);
3819                 vposition += 3;
3820                 outvertex += 3;
3821         }
3822
3823         outtexcoord = loadmodel->surfmesh.data_texcoordtexture2f;
3824         // this unaligned memory access is safe (LittleFloat reads as bytes)
3825         for (i = 0;i < (int)header.num_vertexes;i++)
3826         {
3827                 outtexcoord[0] = LittleFloat(vtexcoord[0]);
3828                 outtexcoord[1] = LittleFloat(vtexcoord[1]);
3829                 vtexcoord += 2;
3830                 outtexcoord += 2;
3831         }
3832
3833         // this unaligned memory access is safe (LittleFloat reads as bytes)
3834         if(vnormal)
3835         {
3836                 outnormal = loadmodel->surfmesh.data_normal3f;
3837                 for (i = 0;i < (int)header.num_vertexes;i++)
3838                 {
3839                         outnormal[0] = LittleFloat(vnormal[0]);
3840                         outnormal[1] = LittleFloat(vnormal[1]);
3841                         outnormal[2] = LittleFloat(vnormal[2]);
3842                         vnormal += 3;
3843                         outnormal += 3;
3844                 }
3845         }
3846
3847         // this unaligned memory access is safe (LittleFloat reads as bytes)
3848         if(vnormal && vtangent)
3849         {
3850                 outnormal = loadmodel->surfmesh.data_normal3f;
3851                 outsvector = loadmodel->surfmesh.data_svector3f;
3852                 outtvector = loadmodel->surfmesh.data_tvector3f;
3853                 for (i = 0;i < (int)header.num_vertexes;i++)
3854                 {
3855                         outsvector[0] = LittleFloat(vtangent[0]);
3856                         outsvector[1] = LittleFloat(vtangent[1]);
3857                         outsvector[2] = LittleFloat(vtangent[2]);
3858                         if(LittleFloat(vtangent[3]) < 0)
3859                                 CrossProduct(outsvector, outnormal, outtvector);
3860                         else
3861                                 CrossProduct(outnormal, outsvector, outtvector);
3862                         vtangent += 4;
3863                         outnormal += 3;
3864                         outsvector += 3;
3865                         outtvector += 3;
3866                 }
3867         }
3868
3869         // this unaligned memory access is safe (all bytes)
3870         if (vblendindexes && vblendweights)
3871         {
3872                 for (i = 0; i < (int)header.num_vertexes;i++)
3873                 {
3874                         blendweights_t weights;
3875                         memcpy(weights.index, vblendindexes + i*4, 4);
3876                         memcpy(weights.influence, vblendweights + i*4, 4);
3877                         loadmodel->surfmesh.blends[i] = Mod_Skeletal_AddBlend(loadmodel, &weights);
3878                         loadmodel->surfmesh.data_skeletalindex4ub[i*4  ] = weights.index[0];
3879                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+1] = weights.index[1];
3880                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+2] = weights.index[2];
3881                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+3] = weights.index[3];
3882                         loadmodel->surfmesh.data_skeletalweight4ub[i*4  ] = weights.influence[0];
3883                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+1] = weights.influence[1];
3884                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+2] = weights.influence[2];
3885                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+3] = weights.influence[3];
3886                 }
3887         }
3888
3889         if (vcolor4f)
3890         {
3891                 outcolor = loadmodel->surfmesh.data_lightmapcolor4f;
3892                 // this unaligned memory access is safe (LittleFloat reads as bytes)
3893                 for (i = 0;i < (int)header.num_vertexes;i++)
3894                 {
3895                         outcolor[0] = LittleFloat(vcolor4f[0]);
3896                         outcolor[1] = LittleFloat(vcolor4f[1]);
3897                         outcolor[2] = LittleFloat(vcolor4f[2]);
3898                         outcolor[3] = LittleFloat(vcolor4f[3]);
3899                         vcolor4f += 4;
3900                         outcolor += 4;
3901                 }
3902         }
3903         else if (vcolor4ub)
3904         {
3905                 outcolor = loadmodel->surfmesh.data_lightmapcolor4f;
3906                 // this unaligned memory access is safe (all bytes)
3907                 for (i = 0;i < (int)header.num_vertexes;i++)
3908                 {
3909                         outcolor[0] = vcolor4ub[0] * (1.0f / 255.0f);
3910                         outcolor[1] = vcolor4ub[1] * (1.0f / 255.0f);
3911                         outcolor[2] = vcolor4ub[2] * (1.0f / 255.0f);
3912                         outcolor[3] = vcolor4ub[3] * (1.0f / 255.0f);
3913                         vcolor4ub += 4;
3914                         outcolor += 4;
3915                 }
3916         }
3917
3918         // load meshes
3919         for (i = 0;i < (int)header.num_meshes;i++)
3920         {
3921                 iqmmesh_t mesh;
3922                 msurface_t *surface;
3923
3924                 memcpy(&mesh, &meshes[i], sizeof(iqmmesh_t));
3925                 mesh.name = LittleLong(mesh.name);
3926                 mesh.material = LittleLong(mesh.material);
3927                 mesh.first_vertex = LittleLong(mesh.first_vertex);
3928                 mesh.num_vertexes = LittleLong(mesh.num_vertexes);
3929                 mesh.first_triangle = LittleLong(mesh.first_triangle);
3930                 mesh.num_triangles = LittleLong(mesh.num_triangles);
3931
3932                 loadmodel->modelsurfaces_sorted[i] = i;
3933                 surface = loadmodel->data_surfaces + i;
3934                 surface->texture = loadmodel->data_textures + i;
3935                 surface->num_firsttriangle = mesh.first_triangle;
3936                 surface->num_triangles = mesh.num_triangles;
3937                 surface->num_firstvertex = mesh.first_vertex;
3938                 surface->num_vertices = mesh.num_vertexes;
3939
3940                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, &text[mesh.name], &text[mesh.material]);
3941         }
3942
3943         Mod_FreeSkinFiles(skinfiles);
3944         Mod_MakeSortedSurfaces(loadmodel);
3945
3946         // compute all the mesh information that was not loaded from the file
3947         if (!vnormal)
3948                 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);
3949         if (!vnormal || !vtangent)
3950                 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);
3951         if (!header.ofs_bounds)
3952                 Mod_Alias_CalculateBoundingBox();
3953
3954         // Always make a BIH for the first frame, we can use it where possible.
3955         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
3956         if (!loadmodel->surfmesh.isanimated)
3957         {
3958                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
3959                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
3960                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
3961                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
3962                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
3963         }
3964
3965         if (joint)  { Mem_Free(joint);  joint  = NULL; }
3966         if (joint1) { Mem_Free(joint1); joint1 = NULL; }
3967         if (pose)   { Mem_Free(pose);   pose   = NULL; }
3968         if (pose1)  { Mem_Free(pose1);  pose1  = NULL; }
3969 }