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         size_t size;
2548         float biggestorigin;
2549
2550         pchunk = (pskchunk_t *)buffer;
2551         if (strcmp(pchunk->id, "ACTRHEAD"))
2552                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2553
2554         loadmodel->modeldatatypestring = "PSK";
2555
2556         loadmodel->type = mod_alias;
2557         loadmodel->Draw = R_Mod_Draw;
2558         loadmodel->DrawDepth = R_Mod_DrawDepth;
2559         loadmodel->DrawDebug = R_Mod_DrawDebug;
2560         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
2561         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
2562         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
2563         loadmodel->DrawLight = R_Mod_DrawLight;
2564         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2565         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
2566         loadmodel->PointSuperContents = NULL;
2567         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
2568         loadmodel->synctype = ST_RAND;
2569
2570         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2571         dp_strlcat(animname, ".psa", sizeof(animname));
2572         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2573         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2574         if (!animbuffer)
2575                 animbufferend = animbuffer;
2576
2577         numpnts = 0;
2578         pnts = NULL;
2579         numvtxw = 0;
2580         vtxw = NULL;
2581         numfaces = 0;
2582         faces = NULL;
2583         nummatts = 0;
2584         matts = NULL;
2585         numbones = 0;
2586         bones = NULL;
2587         numrawweights = 0;
2588         rawweights = NULL;
2589         numanims = 0;
2590         anims = NULL;
2591         numanimkeys = 0;
2592         animkeys = NULL;
2593
2594         while (buffer < bufferend)
2595         {
2596                 pchunk = (pskchunk_t *)buffer;
2597                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2598                 version = LittleLong(pchunk->version);
2599                 recordsize = LittleLong(pchunk->recordsize);
2600                 numrecords = LittleLong(pchunk->numrecords);
2601                 if (developer_extra.integer)
2602                         Con_DPrintf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2603                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2604                         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);
2605                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2606                 {
2607                         // nothing to do
2608                 }
2609                 else if (!strcmp(pchunk->id, "PNTS0000"))
2610                 {
2611                         pskpnts_t *p;
2612                         if (recordsize != sizeof(*p))
2613                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2614                         // byteswap in place and keep the pointer
2615                         numpnts = numrecords;
2616                         pnts = (pskpnts_t *)buffer;
2617                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2618                         {
2619                                 p->origin[0] = LittleFloat(p->origin[0]);
2620                                 p->origin[1] = LittleFloat(p->origin[1]);
2621                                 p->origin[2] = LittleFloat(p->origin[2]);
2622                         }
2623                         buffer = p;
2624                 }
2625                 else if (!strcmp(pchunk->id, "VTXW0000"))
2626                 {
2627                         pskvtxw_t *p;
2628                         if (recordsize != sizeof(*p))
2629                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2630                         // byteswap in place and keep the pointer
2631                         numvtxw = numrecords;
2632                         vtxw = (pskvtxw_t *)buffer;
2633                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2634                         {
2635                                 p->pntsindex = LittleShort(p->pntsindex);
2636                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2637                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2638                                 if (p->pntsindex >= numpnts)
2639                                 {
2640                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2641                                         p->pntsindex = 0;
2642                                 }
2643                         }
2644                         buffer = p;
2645                 }
2646                 else if (!strcmp(pchunk->id, "FACE0000"))
2647                 {
2648                         pskface_t *p;
2649                         if (recordsize != sizeof(*p))
2650                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2651                         // byteswap in place and keep the pointer
2652                         numfaces = numrecords;
2653                         faces = (pskface_t *)buffer;
2654                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2655                         {
2656                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2657                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2658                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2659                                 p->group = LittleLong(p->group);
2660                                 if (p->vtxwindex[0] >= numvtxw)
2661                                 {
2662                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2663                                         p->vtxwindex[0] = 0;
2664                                 }
2665                                 if (p->vtxwindex[1] >= numvtxw)
2666                                 {
2667                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2668                                         p->vtxwindex[1] = 0;
2669                                 }
2670                                 if (p->vtxwindex[2] >= numvtxw)
2671                                 {
2672                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2673                                         p->vtxwindex[2] = 0;
2674                                 }
2675                         }
2676                         buffer = p;
2677                 }
2678                 else if (!strcmp(pchunk->id, "MATT0000"))
2679                 {
2680                         pskmatt_t *p;
2681                         if (recordsize != sizeof(*p))
2682                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2683                         // byteswap in place and keep the pointer
2684                         nummatts = numrecords;
2685                         matts = (pskmatt_t *)buffer;
2686                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2687                         {
2688                                 // nothing to do
2689                         }
2690                         buffer = p;
2691                 }
2692                 else if (!strcmp(pchunk->id, "REFSKELT"))
2693                 {
2694                         pskboneinfo_t *p;
2695                         if (recordsize != sizeof(*p))
2696                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2697                         // byteswap in place and keep the pointer
2698                         numbones = numrecords;
2699                         bones = (pskboneinfo_t *)buffer;
2700                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2701                         {
2702                                 p->numchildren = LittleLong(p->numchildren);
2703                                 p->parent = LittleLong(p->parent);
2704                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2705                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2706                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2707                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2708                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2709                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2710                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2711                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2712                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2713                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2714                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2715 #ifdef PSKQUATNEGATIONS
2716                                 if (index)
2717                                 {
2718                                         p->basepose.quat[0] *= -1;
2719                                         p->basepose.quat[1] *= -1;
2720                                         p->basepose.quat[2] *= -1;
2721                                 }
2722                                 else
2723                                 {
2724                                         p->basepose.quat[0] *=  1;
2725                                         p->basepose.quat[1] *= -1;
2726                                         p->basepose.quat[2] *=  1;
2727                                 }
2728 #endif
2729                                 if (p->parent < 0 || p->parent >= numbones)
2730                                 {
2731                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2732                                         p->parent = 0;
2733                                 }
2734                         }
2735                         buffer = p;
2736                 }
2737                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2738                 {
2739                         pskrawweights_t *p;
2740                         if (recordsize != sizeof(*p))
2741                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2742                         // byteswap in place and keep the pointer
2743                         numrawweights = numrecords;
2744                         rawweights = (pskrawweights_t *)buffer;
2745                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2746                         {
2747                                 p->weight = LittleFloat(p->weight);
2748                                 p->pntsindex = LittleLong(p->pntsindex);
2749                                 p->boneindex = LittleLong(p->boneindex);
2750                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2751                                 {
2752                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2753                                         p->pntsindex = 0;
2754                                 }
2755                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2756                                 {
2757                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2758                                         p->boneindex = 0;
2759                                 }
2760                         }
2761                         buffer = p;
2762                 }
2763         }
2764
2765         while (animbuffer < animbufferend)
2766         {
2767                 pchunk = (pskchunk_t *)animbuffer;
2768                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2769                 version = LittleLong(pchunk->version);
2770                 recordsize = LittleLong(pchunk->recordsize);
2771                 numrecords = LittleLong(pchunk->numrecords);
2772                 if (developer_extra.integer)
2773                         Con_DPrintf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2774                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2775                         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);
2776                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2777                 {
2778                         // nothing to do
2779                 }
2780                 else if (!strcmp(pchunk->id, "BONENAMES"))
2781                 {
2782                         pskboneinfo_t *p;
2783                         if (recordsize != sizeof(*p))
2784                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2785                         // byteswap in place and keep the pointer
2786                         numanimbones = numrecords;
2787                         //animbones = (pskboneinfo_t *)animbuffer;
2788                         // NOTE: supposedly psa does not need to match the psk model, the
2789                         // bones missing from the psa would simply use their base
2790                         // positions from the psk, but this is hard for me to implement
2791                         // and people can easily make animations that match.
2792                         if (numanimbones != numbones)
2793                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2794                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2795                         {
2796                                 p->numchildren = LittleLong(p->numchildren);
2797                                 p->parent = LittleLong(p->parent);
2798                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2799                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2800                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2801                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2802                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2803                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2804                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2805                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2806                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2807                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2808                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2809 #ifdef PSKQUATNEGATIONS
2810                                 if (index)
2811                                 {
2812                                         p->basepose.quat[0] *= -1;
2813                                         p->basepose.quat[1] *= -1;
2814                                         p->basepose.quat[2] *= -1;
2815                                 }
2816                                 else
2817                                 {
2818                                         p->basepose.quat[0] *=  1;
2819                                         p->basepose.quat[1] *= -1;
2820                                         p->basepose.quat[2] *=  1;
2821                                 }
2822 #endif
2823                                 if (p->parent < 0 || p->parent >= numanimbones)
2824                                 {
2825                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2826                                         p->parent = 0;
2827                                 }
2828                                 // check that bones are the same as in the base
2829                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2830                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2831                         }
2832                         animbuffer = p;
2833                 }
2834                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2835                 {
2836                         pskaniminfo_t *p;
2837                         if (recordsize != sizeof(*p))
2838                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2839                         // byteswap in place and keep the pointer
2840                         numanims = numrecords;
2841                         anims = (pskaniminfo_t *)animbuffer;
2842                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2843                         {
2844                                 p->numbones = LittleLong(p->numbones);
2845                                 p->playtime = LittleFloat(p->playtime);
2846                                 p->fps = LittleFloat(p->fps);
2847                                 p->firstframe = LittleLong(p->firstframe);
2848                                 p->numframes = LittleLong(p->numframes);
2849                                 if (p->numbones != numbones)
2850                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2851                         }
2852                         animbuffer = p;
2853                 }
2854                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2855                 {
2856                         pskanimkeys_t *p;
2857                         if (recordsize != sizeof(*p))
2858                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2859                         numanimkeys = numrecords;
2860                         animkeys = (pskanimkeys_t *)animbuffer;
2861                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2862                         {
2863                                 p->origin[0] = LittleFloat(p->origin[0]);
2864                                 p->origin[1] = LittleFloat(p->origin[1]);
2865                                 p->origin[2] = LittleFloat(p->origin[2]);
2866                                 p->quat[0] = LittleFloat(p->quat[0]);
2867                                 p->quat[1] = LittleFloat(p->quat[1]);
2868                                 p->quat[2] = LittleFloat(p->quat[2]);
2869                                 p->quat[3] = LittleFloat(p->quat[3]);
2870                                 p->frametime = LittleFloat(p->frametime);
2871 #ifdef PSKQUATNEGATIONS
2872                                 if (index % numbones)
2873                                 {
2874                                         p->quat[0] *= -1;
2875                                         p->quat[1] *= -1;
2876                                         p->quat[2] *= -1;
2877                                 }
2878                                 else
2879                                 {
2880                                         p->quat[0] *=  1;
2881                                         p->quat[1] *= -1;
2882                                         p->quat[2] *=  1;
2883                                 }
2884 #endif
2885                         }
2886                         animbuffer = p;
2887                         // TODO: allocate bonepose stuff
2888                 }
2889                 else
2890                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2891         }
2892
2893         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights)
2894                 Host_Error("%s: missing required chunks", loadmodel->name);
2895
2896         if (numanims)
2897         {
2898                 loadmodel->numframes = 0;
2899                 for (index = 0;index < numanims;index++)
2900                         loadmodel->numframes += anims[index].numframes;
2901                 if (numanimkeys != numbones * loadmodel->numframes)
2902                         Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2903         }
2904         else
2905                 loadmodel->numframes = loadmodel->num_poses = 1;
2906
2907         meshvertices = numvtxw;
2908         meshtriangles = numfaces;
2909
2910         // load external .skin files if present
2911         skinfiles = Mod_LoadSkinFiles();
2912         if (loadmodel->numskins < 1)
2913                 loadmodel->numskins = 1;
2914         loadmodel->num_bones = numbones;
2915         loadmodel->num_poses = loadmodel->numframes;
2916         loadmodel->submodelsurfaces_start = 0;
2917         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces = nummatts;
2918         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
2919         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
2920         loadmodel->surfmesh.num_vertices = meshvertices;
2921         loadmodel->surfmesh.num_triangles = meshtriangles;
2922         // do most allocations as one merged chunk
2923         size = loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[3]) + loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]) + loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]) + loadmodel->surfmesh.num_vertices * sizeof(unsigned short) + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t) + ((loadmodel->surfmesh.num_vertices <= 65536) ? (loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3])) : 0);
2924         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, size);
2925         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2926         loadmodel->modelsurfaces_sorted = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2927         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2928         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
2929         loadmodel->surfmesh.data_vertex3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2930         loadmodel->surfmesh.data_svector3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2931         loadmodel->surfmesh.data_tvector3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2932         loadmodel->surfmesh.data_normal3f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2933         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2934         loadmodel->surfmesh.data_skeletalindex4ub = (unsigned char *)data;data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
2935         loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data;data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
2936         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
2937         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2938         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2939         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2940         loadmodel->surfmesh.num_blends = 0;
2941         loadmodel->surfmesh.blends = (unsigned short *)data;data += meshvertices * sizeof(unsigned short);
2942         if (loadmodel->surfmesh.num_vertices <= 65536)
2943         {
2944                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
2945         }
2946         loadmodel->data_poses7s = (short *)data;data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
2947         loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(blendweights_t));
2948
2949         for (i = 0;i < loadmodel->numskins;i++)
2950         {
2951                 loadmodel->skinscenes[i].firstframe = i;
2952                 loadmodel->skinscenes[i].framecount = 1;
2953                 loadmodel->skinscenes[i].loop = true;
2954                 loadmodel->skinscenes[i].framerate = 10;
2955         }
2956
2957         // create surfaces
2958         for (index = 0, i = 0;index < nummatts;index++)
2959         {
2960                 // since psk models do not have named sections, reuse their shader name as the section name
2961                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2962                 loadmodel->modelsurfaces_sorted[index] = index;
2963                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2964                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2965                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2966         }
2967
2968         // copy over the vertex locations and texcoords
2969         for (index = 0;index < numvtxw;index++)
2970         {
2971                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2972                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2973                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2974                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2975                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2976         }
2977
2978         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2979         for (index = 0;index < numfaces;index++)
2980                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2981         for (index = 0, i = 0;index < nummatts;index++)
2982         {
2983                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2984                 i += loadmodel->data_surfaces[index].num_triangles;
2985                 loadmodel->data_surfaces[index].num_triangles = 0;
2986         }
2987         for (index = 0;index < numfaces;index++)
2988         {
2989                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2990                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2991                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2992                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2993         }
2994
2995         // copy over the bones
2996         for (index = 0;index < numbones;index++)
2997         {
2998                 dp_strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2999                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
3000                 if (loadmodel->data_bones[index].parent >= index)
3001                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
3002         }
3003
3004         // convert the basepose data
3005         if (loadmodel->num_bones)
3006         {
3007                 int boneindex;
3008                 matrix4x4_t *basebonepose;
3009                 float *outinvmatrix = loadmodel->data_baseboneposeinverse;
3010                 matrix4x4_t bonematrix;
3011                 matrix4x4_t tempbonematrix;
3012                 basebonepose = (matrix4x4_t *)Mem_Alloc(tempmempool, loadmodel->num_bones * sizeof(matrix4x4_t));
3013                 for (boneindex = 0;boneindex < loadmodel->num_bones;boneindex++)
3014                 {
3015                         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]);
3016                         if (loadmodel->data_bones[boneindex].parent >= 0)
3017                         {
3018                                 tempbonematrix = bonematrix;
3019                                 Matrix4x4_Concat(&bonematrix, basebonepose + loadmodel->data_bones[boneindex].parent, &tempbonematrix);
3020                         }
3021                         basebonepose[boneindex] = bonematrix;
3022                         Matrix4x4_Invert_Simple(&tempbonematrix, basebonepose + boneindex);
3023                         Matrix4x4_ToArray12FloatD3D(&tempbonematrix, outinvmatrix + 12*boneindex);
3024                 }
3025                 Mem_Free(basebonepose);
3026         }
3027
3028         // sort the psk point weights into the vertex weight tables
3029         // (which only accept up to 4 bones per vertex)
3030         for (index = 0;index < numvtxw;index++)
3031         {
3032                 int weightindex[4] = { 0, 0, 0, 0 };
3033                 float weightinfluence[4] = { 0, 0, 0, 0 };
3034                 int l;
3035                 for (j = 0;j < numrawweights;j++)
3036                 {
3037                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
3038                         {
3039                                 int boneindex = rawweights[j].boneindex;
3040                                 float influence = rawweights[j].weight;
3041                                 for (l = 0;l < 4;l++)
3042                                 {
3043                                         if (weightinfluence[l] < influence)
3044                                         {
3045                                                 // move lower influence weights out of the way first
3046                                                 int l2;
3047                                                 for (l2 = 3;l2 > l;l2--)
3048                                                 {
3049                                                         weightinfluence[l2] = weightinfluence[l2-1];
3050                                                         weightindex[l2] = weightindex[l2-1];
3051                                                 }
3052                                                 // store the new weight
3053                                                 weightinfluence[l] = influence;
3054                                                 weightindex[l] = boneindex;
3055                                                 break;
3056                                         }
3057                                 }
3058                         }
3059                 }
3060                 loadmodel->surfmesh.blends[index] = Mod_Skeletal_CompressBlend(loadmodel, weightindex, weightinfluence);
3061                 loadmodel->surfmesh.data_skeletalindex4ub[index*4  ] = weightindex[0];
3062                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+1] = weightindex[1];
3063                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+2] = weightindex[2];
3064                 loadmodel->surfmesh.data_skeletalindex4ub[index*4+3] = weightindex[3];
3065                 loadmodel->surfmesh.data_skeletalweight4ub[index*4  ] = (unsigned char)(weightinfluence[0]*255.0f);
3066                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+1] = (unsigned char)(weightinfluence[1]*255.0f);
3067                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+2] = (unsigned char)(weightinfluence[2]*255.0f);
3068                 loadmodel->surfmesh.data_skeletalweight4ub[index*4+3] = (unsigned char)(weightinfluence[3]*255.0f);
3069         }
3070         if (loadmodel->surfmesh.num_blends < loadmodel->surfmesh.num_vertices)
3071                 loadmodel->surfmesh.data_blendweights = (blendweights_t *)Mem_Realloc(loadmodel->mempool, loadmodel->surfmesh.data_blendweights, loadmodel->surfmesh.num_blends * sizeof(blendweights_t));
3072
3073         // set up the animscenes based on the anims
3074         if (numanims)
3075         {
3076                 for (index = 0, i = 0;index < numanims;index++)
3077                 {
3078                         for (j = 0;j < anims[index].numframes;j++, i++)
3079                         {
3080                                 dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
3081                                 loadmodel->animscenes[i].firstframe = i;
3082                                 loadmodel->animscenes[i].framecount = 1;
3083                                 loadmodel->animscenes[i].loop = true;
3084                                 loadmodel->animscenes[i].framerate = anims[index].fps;
3085                         }
3086                 }
3087                 // calculate the scaling value for bone origins so they can be compressed to short
3088                 biggestorigin = 0;
3089                 for (index = 0;index < numanimkeys;index++)
3090                 {
3091                         pskanimkeys_t *k = animkeys + index;
3092                         biggestorigin = max(biggestorigin, fabs(k->origin[0]));
3093                         biggestorigin = max(biggestorigin, fabs(k->origin[1]));
3094                         biggestorigin = max(biggestorigin, fabs(k->origin[2]));
3095                 }
3096                 loadmodel->num_posescale = biggestorigin / 32767.0f;
3097                 if (loadmodel->num_posescale == 0) // don't divide by zero
3098                         loadmodel->num_posescale = 1.0;
3099                 loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3100
3101                 // load the poses from the animkeys
3102                 for (index = 0;index < numanimkeys;index++)
3103                 {
3104                         pskanimkeys_t *k = animkeys + index;
3105                         float quat[4];
3106                         Vector4Copy(k->quat, quat);
3107                         if (quat[3] > 0)
3108                                 Vector4Negate(quat, quat);
3109                         Vector4Normalize2(quat, quat);
3110                         // compress poses to the short[7] format for longterm storage
3111                         loadmodel->data_poses7s[index*7+0] = k->origin[0] * loadmodel->num_poseinvscale;
3112                         loadmodel->data_poses7s[index*7+1] = k->origin[1] * loadmodel->num_poseinvscale;
3113                         loadmodel->data_poses7s[index*7+2] = k->origin[2] * loadmodel->num_poseinvscale;
3114                         loadmodel->data_poses7s[index*7+3] = quat[0] * 32767.0f;
3115                         loadmodel->data_poses7s[index*7+4] = quat[1] * 32767.0f;
3116                         loadmodel->data_poses7s[index*7+5] = quat[2] * 32767.0f;
3117                         loadmodel->data_poses7s[index*7+6] = quat[3] * 32767.0f;
3118                 }
3119         }
3120         else
3121         {
3122                 dp_strlcpy(loadmodel->animscenes[0].name, "base", sizeof(loadmodel->animscenes[0].name));
3123                 loadmodel->animscenes[0].firstframe = 0;
3124                 loadmodel->animscenes[0].framecount = 1;
3125                 loadmodel->animscenes[0].loop = true;
3126                 loadmodel->animscenes[0].framerate = 10;
3127
3128                 // calculate the scaling value for bone origins so they can be compressed to short
3129                 biggestorigin = 0;
3130                 for (index = 0;index < numbones;index++)
3131                 {
3132                         pskboneinfo_t *p = bones + index;
3133                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[0]));
3134                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[1]));
3135                         biggestorigin = max(biggestorigin, fabs(p->basepose.origin[2]));
3136                 }
3137                 loadmodel->num_posescale = biggestorigin / 32767.0f;
3138                 if (loadmodel->num_posescale == 0) // don't divide by zero
3139                         loadmodel->num_posescale = 1.0;
3140                 loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3141
3142                 // load the basepose as a frame
3143                 for (index = 0;index < numbones;index++)
3144                 {
3145                         pskboneinfo_t *p = bones + index;
3146                         float quat[4];
3147                         Vector4Copy(p->basepose.quat, quat);
3148                         if (quat[3] > 0)
3149                                 Vector4Negate(quat, quat);
3150                         Vector4Normalize2(quat, quat);
3151                         // compress poses to the short[7] format for longterm storage
3152                         loadmodel->data_poses7s[index*7+0] = p->basepose.origin[0] * loadmodel->num_poseinvscale;
3153                         loadmodel->data_poses7s[index*7+1] = p->basepose.origin[1] * loadmodel->num_poseinvscale;
3154                         loadmodel->data_poses7s[index*7+2] = p->basepose.origin[2] * loadmodel->num_poseinvscale;
3155                         loadmodel->data_poses7s[index*7+3] = quat[0] * 32767.0f;
3156                         loadmodel->data_poses7s[index*7+4] = quat[1] * 32767.0f;
3157                         loadmodel->data_poses7s[index*7+5] = quat[2] * 32767.0f;
3158                         loadmodel->data_poses7s[index*7+6] = quat[3] * 32767.0f;
3159                 }
3160         }
3161
3162         Mod_FreeSkinFiles(skinfiles);
3163         if (animfilebuffer)
3164                 Mem_Free(animfilebuffer);
3165         Mod_MakeSortedSurfaces(loadmodel);
3166
3167         // compute all the mesh information that was not loaded from the file
3168         // TODO: honor smoothing groups somehow?
3169         if (loadmodel->surfmesh.data_element3s)
3170                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
3171                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
3172         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
3173         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);
3174         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);
3175         loadmodel->surfmesh.isanimated = Mod_Alias_CalculateBoundingBox();
3176         if(mod_alias_force_animated.string[0])
3177                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
3178
3179         // Always make a BIH for the first frame, we can use it where possible.
3180         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
3181         if (!loadmodel->surfmesh.isanimated)
3182         {
3183                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
3184                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
3185                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
3186                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
3187                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
3188         }
3189 }
3190
3191 void Mod_INTERQUAKEMODEL_Load(model_t *mod, void *buffer, void *bufferend)
3192 {
3193         unsigned char *data;
3194         const char *text;
3195         const unsigned char *pbase, *pend;
3196         iqmheader_t header;
3197         skinfile_t *skinfiles;
3198         int i, j, k;
3199         float biggestorigin;
3200         const unsigned int *inelements;
3201         int *outelements;
3202         float *outvertex, *outnormal, *outtexcoord, *outsvector, *outtvector, *outcolor;
3203         // this pointers into the file data are read only through Little* functions so they can be unaligned memory
3204         const float *vnormal = NULL;
3205         const float *vposition = NULL;
3206         const float *vtangent = NULL;
3207         const float *vtexcoord = NULL;
3208         const float *vcolor4f = NULL;
3209         const unsigned char *vblendindexes = NULL;
3210         const unsigned char *vblendweights = NULL;
3211         const unsigned char *vcolor4ub = NULL;
3212         const unsigned short *framedata = NULL;
3213         // temporary memory allocations (because the data in the file may be misaligned)
3214         iqmanim_t *anims = NULL;
3215         iqmbounds_t *bounds = NULL;
3216         iqmjoint1_t *joint1 = NULL;
3217         iqmjoint_t *joint = NULL;
3218         iqmmesh_t *meshes = NULL;
3219         iqmpose1_t *pose1 = NULL;
3220         iqmpose_t *pose = NULL;
3221         iqmvertexarray_t *vas = NULL;
3222
3223         pbase = (unsigned char *)buffer;
3224         pend = (unsigned char *)bufferend;
3225
3226         if (pbase + sizeof(iqmheader_t) > pend)
3227                 Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model %d", loadmodel->name, (int)(pend - pbase));
3228
3229         // copy struct (otherwise it may be misaligned)
3230         // LadyHavoc: okay it's definitely not misaligned here, but for consistency...
3231         memcpy(&header, pbase, sizeof(iqmheader_t));
3232
3233         if (memcmp(header.id, "INTERQUAKEMODEL", 16))
3234                 Host_Error ("Mod_INTERQUAKEMODEL_Load: %s is not an Inter-Quake Model", loadmodel->name);
3235         if (LittleLong(header.version) != 1 && LittleLong(header.version) != 2)
3236                 Host_Error ("Mod_INTERQUAKEMODEL_Load: only version 1 and 2 models are currently supported (name = %s)", loadmodel->name);
3237
3238         loadmodel->modeldatatypestring = "IQM";
3239
3240         loadmodel->type = mod_alias;
3241         loadmodel->synctype = ST_RAND;
3242
3243         // byteswap header
3244         header.version = LittleLong(header.version);
3245         header.filesize = LittleLong(header.filesize);
3246         header.flags = LittleLong(header.flags);
3247         header.num_text = LittleLong(header.num_text);
3248         header.ofs_text = LittleLong(header.ofs_text);
3249         header.num_meshes = LittleLong(header.num_meshes);
3250         header.ofs_meshes = LittleLong(header.ofs_meshes);
3251         header.num_vertexarrays = LittleLong(header.num_vertexarrays);
3252         header.num_vertexes = LittleLong(header.num_vertexes);
3253         header.ofs_vertexarrays = LittleLong(header.ofs_vertexarrays);
3254         header.num_triangles = LittleLong(header.num_triangles);
3255         header.ofs_triangles = LittleLong(header.ofs_triangles);
3256         header.ofs_neighbors = LittleLong(header.ofs_neighbors);
3257         header.num_joints = LittleLong(header.num_joints);
3258         header.ofs_joints = LittleLong(header.ofs_joints);
3259         header.num_poses = LittleLong(header.num_poses);
3260         header.ofs_poses = LittleLong(header.ofs_poses);
3261         header.num_anims = LittleLong(header.num_anims);
3262         header.ofs_anims = LittleLong(header.ofs_anims);
3263         header.num_frames = LittleLong(header.num_frames);
3264         header.num_framechannels = LittleLong(header.num_framechannels);
3265         header.ofs_frames = LittleLong(header.ofs_frames);
3266         header.ofs_bounds = LittleLong(header.ofs_bounds);
3267         header.num_comment = LittleLong(header.num_comment);
3268         header.ofs_comment = LittleLong(header.ofs_comment);
3269         header.num_extensions = LittleLong(header.num_extensions);
3270         header.ofs_extensions = LittleLong(header.ofs_extensions);
3271
3272         if (header.version == 1)
3273         {
3274                 if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint1_t) > pend ||
3275                         pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose1_t) > pend)
3276                 {
3277                         Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3278                         return;
3279                 }
3280         }
3281         else
3282         {
3283                 if (pbase + header.ofs_joints + header.num_joints*sizeof(iqmjoint_t) > pend ||
3284                         pbase + header.ofs_poses + header.num_poses*sizeof(iqmpose_t) > pend)
3285                 {
3286                         Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3287                         return;
3288                 }
3289         }
3290         if (pbase + header.ofs_text + header.num_text > pend ||
3291                 pbase + header.ofs_meshes + header.num_meshes*sizeof(iqmmesh_t) > pend ||
3292                 pbase + header.ofs_vertexarrays + header.num_vertexarrays*sizeof(iqmvertexarray_t) > pend ||
3293                 pbase + header.ofs_triangles + header.num_triangles*sizeof(int[3]) > pend ||
3294                 (header.ofs_neighbors && pbase + header.ofs_neighbors + header.num_triangles*sizeof(int[3]) > pend) ||
3295                 pbase + header.ofs_anims + header.num_anims*sizeof(iqmanim_t) > pend ||
3296                 pbase + header.ofs_frames + header.num_frames*header.num_framechannels*sizeof(unsigned short) > pend ||
3297                 (header.ofs_bounds && pbase + header.ofs_bounds + header.num_frames*sizeof(iqmbounds_t) > pend) ||
3298                 pbase + header.ofs_comment + header.num_comment > pend)
3299         {
3300                 Con_Printf("%s has invalid size or offset information\n", loadmodel->name);
3301                 return;
3302         }
3303
3304         // Structs will be copied for alignment in memory, otherwise we crash on Sparc, PowerPC and others
3305         // and get big spam from UBSan, because these offsets may not be aligned.
3306         if (header.num_vertexarrays)
3307                 vas = (iqmvertexarray_t *)(pbase + header.ofs_vertexarrays);
3308         if (header.num_anims)
3309                 anims = (iqmanim_t *)(pbase + header.ofs_anims);
3310         if (header.ofs_bounds)
3311                 bounds = (iqmbounds_t *)(pbase + header.ofs_bounds);
3312         if (header.num_meshes)
3313                 meshes = (iqmmesh_t *)(pbase + header.ofs_meshes);
3314
3315         for (i = 0;i < (int)header.num_vertexarrays;i++)
3316         {
3317                 iqmvertexarray_t va;
3318                 size_t vsize;
3319
3320                 memcpy(&va, &vas[i], sizeof(iqmvertexarray_t));
3321                 va.type = LittleLong(va.type);
3322                 va.flags = LittleLong(va.flags);
3323                 va.format = LittleLong(va.format);
3324                 va.size = LittleLong(va.size);
3325                 va.offset = LittleLong(va.offset);
3326                 vsize = header.num_vertexes*va.size;
3327                 switch (va.format)
3328                 {
3329                 case IQM_FLOAT: vsize *= sizeof(float); break;
3330                 case IQM_UBYTE: vsize *= sizeof(unsigned char); break;
3331                 default: continue;
3332                 }
3333                 if (pbase + va.offset + vsize > pend)
3334                         continue;
3335                 // no need to copy the vertex data for alignment because LittleLong/LittleShort will be invoked on reading them, and the destination is aligned
3336                 switch (va.type)
3337                 {
3338                 case IQM_POSITION:
3339                         if (va.format == IQM_FLOAT && va.size == 3)
3340                                 vposition = (const float *)(pbase + va.offset);
3341                         break;
3342                 case IQM_TEXCOORD:
3343                         if (va.format == IQM_FLOAT && va.size == 2)
3344                                 vtexcoord = (const float *)(pbase + va.offset);
3345                         break;
3346                 case IQM_NORMAL:
3347                         if (va.format == IQM_FLOAT && va.size == 3)
3348                                 vnormal = (const float *)(pbase + va.offset);
3349                         break;
3350                 case IQM_TANGENT:
3351                         if (va.format == IQM_FLOAT && va.size == 4)
3352                                 vtangent = (const float *)(pbase + va.offset);
3353                         break;
3354                 case IQM_BLENDINDEXES:
3355                         if (va.format == IQM_UBYTE && va.size == 4)
3356                                 vblendindexes = (const unsigned char *)(pbase + va.offset);
3357                         break;
3358                 case IQM_BLENDWEIGHTS:
3359                         if (va.format == IQM_UBYTE && va.size == 4)
3360                                 vblendweights = (const unsigned char *)(pbase + va.offset);
3361                         break;
3362                 case IQM_COLOR:
3363                         if (va.format == IQM_FLOAT && va.size == 4)
3364                                 vcolor4f = (const float *)(pbase + va.offset);
3365                         if (va.format == IQM_UBYTE && va.size == 4)
3366                                 vcolor4ub = (const unsigned char *)(pbase + va.offset);
3367                         break;
3368                 }
3369         }
3370         if (header.num_vertexes > 0 && (!vposition || !vtexcoord || ((header.num_frames > 0 || header.num_anims > 0) && (!vblendindexes || !vblendweights))))
3371         {
3372                 Con_Printf("%s is missing vertex array data\n", loadmodel->name);
3373                 return;
3374         }
3375
3376         text = header.num_text && header.ofs_text ? (const char *)(pbase + header.ofs_text) : "";
3377
3378         loadmodel->Draw = R_Mod_Draw;
3379         loadmodel->DrawDepth = R_Mod_DrawDepth;
3380         loadmodel->DrawDebug = R_Mod_DrawDebug;
3381         loadmodel->DrawPrepass = R_Mod_DrawPrepass;
3382         loadmodel->CompileShadowMap = R_Mod_CompileShadowMap;
3383         loadmodel->DrawShadowMap = R_Mod_DrawShadowMap;
3384         loadmodel->DrawLight = R_Mod_DrawLight;
3385         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
3386         loadmodel->TraceLine = Mod_MDLMD2MD3_TraceLine;
3387         loadmodel->PointSuperContents = NULL;
3388         loadmodel->AnimateVertices = Mod_Skeletal_AnimateVertices;
3389
3390         // load external .skin files if present
3391         skinfiles = Mod_LoadSkinFiles();
3392         if (loadmodel->numskins < 1)
3393                 loadmodel->numskins = 1;
3394
3395         loadmodel->numframes = max(header.num_anims, 1);
3396         loadmodel->num_bones = header.num_joints;
3397         loadmodel->num_poses = max(header.num_frames, 1);
3398         loadmodel->submodelsurfaces_start = 0;
3399         loadmodel->submodelsurfaces_end = loadmodel->num_surfaces = header.num_meshes;
3400         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
3401         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
3402         loadmodel->surfmesh.num_vertices = header.num_vertexes;
3403         loadmodel->surfmesh.num_triangles = header.num_triangles;
3404
3405         // do most allocations as one merged chunk
3406         // This is only robust for C standard types!
3407         data = (unsigned char *)Mem_Alloc(loadmodel->mempool,
3408                 loadmodel->surfmesh.num_vertices * (sizeof(float[14]) + (vcolor4f || vcolor4ub ? sizeof(float[4]) : 0))
3409                 + loadmodel->num_bones * sizeof(float[12])
3410                 + loadmodel->num_surfaces * sizeof(int)
3411                 + loadmodel->surfmesh.num_triangles * sizeof(int[3])
3412                 + (loadmodel->surfmesh.num_vertices <= 65536 ? loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]) : 0)
3413                 + loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7])
3414                 + (vblendindexes && vblendweights ? loadmodel->surfmesh.num_vertices * (sizeof(unsigned short) + sizeof(unsigned char[2][4])) : 0));
3415         // Pointers must be taken in descending order of alignment requirement!
3416         loadmodel->surfmesh.data_vertex3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3417         loadmodel->surfmesh.data_svector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3418         loadmodel->surfmesh.data_tvector3f         = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3419         loadmodel->surfmesh.data_normal3f          = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
3420         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
3421         if (vcolor4f || vcolor4ub)
3422         {
3423                 loadmodel->surfmesh.data_lightmapcolor4f = (float *)data; data += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
3424         }
3425         loadmodel->data_baseboneposeinverse = (float *)data; data += loadmodel->num_bones * sizeof(float[12]);
3426         loadmodel->modelsurfaces_sorted       = (int *)data; data += loadmodel->num_surfaces * sizeof(int);
3427         loadmodel->surfmesh.data_element3i    = (int *)data; data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
3428         loadmodel->data_poses7s             = (short *)data; data += loadmodel->num_poses * loadmodel->num_bones * sizeof(short[7]);
3429         if (loadmodel->surfmesh.num_vertices <= 65536)
3430         {
3431                 loadmodel->surfmesh.data_element3s = (unsigned short *)data; data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
3432         }
3433         if (vblendindexes && vblendweights)
3434         {
3435                 loadmodel->surfmesh.num_blends = 0;
3436                 loadmodel->surfmesh.blends                = (unsigned short *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned short);
3437                 loadmodel->surfmesh.data_skeletalindex4ub  = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
3438                 loadmodel->surfmesh.data_skeletalweight4ub = (unsigned char *)data; data += loadmodel->surfmesh.num_vertices * sizeof(unsigned char[4]);
3439         }
3440         // Struct alignment requirements could change so we can't assume them here
3441         // otherwise a safe-looking commit could introduce undefined behaviour!
3442         loadmodel->data_surfaces = Mem_AllocType(loadmodel->mempool, msurface_t, loadmodel->num_surfaces * sizeof(msurface_t));
3443         loadmodel->data_textures = Mem_AllocType(loadmodel->mempool, texture_t, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
3444         loadmodel->skinscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numskins * sizeof(animscene_t));
3445         loadmodel->data_bones = Mem_AllocType(loadmodel->mempool, aliasbone_t, loadmodel->num_bones * sizeof(aliasbone_t));
3446         loadmodel->animscenes = Mem_AllocType(loadmodel->mempool, animscene_t, loadmodel->numframes * sizeof(animscene_t));
3447         if (vblendindexes && vblendweights)
3448                 loadmodel->surfmesh.data_blendweights = Mem_AllocType(loadmodel->mempool, blendweights_t, loadmodel->surfmesh.num_vertices * sizeof(blendweights_t));
3449
3450         for (i = 0;i < loadmodel->numskins;i++)
3451         {
3452                 loadmodel->skinscenes[i].firstframe = i;
3453                 loadmodel->skinscenes[i].framecount = 1;
3454                 loadmodel->skinscenes[i].loop = true;
3455                 loadmodel->skinscenes[i].framerate = 10;
3456         }
3457
3458         // load the bone info
3459         if (header.version == 1)
3460         {
3461                 iqmjoint1_t *injoints1 = (iqmjoint1_t *)(pbase + header.ofs_joints);
3462
3463                 if (loadmodel->num_bones)
3464                         joint1 = (iqmjoint1_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint1_t));
3465                 for (i = 0;i < loadmodel->num_bones;i++)
3466                 {
3467                         matrix4x4_t relbase, relinvbase, pinvbase, invbase;
3468                         iqmjoint1_t injoint1;
3469
3470                         memcpy(&injoint1, &injoints1[i], sizeof(iqmjoint1_t));
3471                         joint1[i].name = LittleLong(injoint1.name);
3472                         joint1[i].parent = LittleLong(injoint1.parent);
3473                         for (j = 0;j < 3;j++)
3474                         {
3475                                 joint1[i].origin[j] = LittleFloat(injoint1.origin[j]);
3476                                 joint1[i].rotation[j] = LittleFloat(injoint1.rotation[j]);
3477                                 joint1[i].scale[j] = LittleFloat(injoint1.scale[j]);
3478                         }
3479                         dp_strlcpy(loadmodel->data_bones[i].name, &text[joint1[i].name], sizeof(loadmodel->data_bones[i].name));
3480                         loadmodel->data_bones[i].parent = joint1[i].parent;
3481                         if (loadmodel->data_bones[i].parent >= i)
3482                                 Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
3483                         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]);
3484                         Matrix4x4_Invert_Simple(&relinvbase, &relbase);
3485                         if (loadmodel->data_bones[i].parent >= 0)
3486                         {
3487                                 Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
3488                                 Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
3489                                 Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
3490                         }
3491                         else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
3492                 }
3493         }
3494         else
3495         {
3496                 iqmjoint_t *injoints = (iqmjoint_t *)(pbase + header.ofs_joints);
3497
3498                 if (header.num_joints)
3499                         joint = (iqmjoint_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_bones * sizeof(iqmjoint_t));
3500                 for (i = 0;i < loadmodel->num_bones;i++)
3501                 {
3502                         matrix4x4_t relbase, relinvbase, pinvbase, invbase;
3503                         iqmjoint_t injoint;
3504
3505                         memcpy(&injoint, &injoints[i], sizeof(iqmjoint_t));
3506                         joint[i].name = LittleLong(injoint.name);
3507                         joint[i].parent = LittleLong(injoint.parent);
3508                         for (j = 0;j < 3;j++)
3509                         {
3510                                 joint[i].origin[j] = LittleFloat(injoint.origin[j]);
3511                                 joint[i].rotation[j] = LittleFloat(injoint.rotation[j]);
3512                                 joint[i].scale[j] = LittleFloat(injoint.scale[j]);
3513                         }
3514                         joint[i].rotation[3] = LittleFloat(injoint.rotation[3]);
3515                         dp_strlcpy(loadmodel->data_bones[i].name, &text[joint[i].name], sizeof(loadmodel->data_bones[i].name));
3516                         loadmodel->data_bones[i].parent = joint[i].parent;
3517                         if (loadmodel->data_bones[i].parent >= i)
3518                                 Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
3519                         if (joint[i].rotation[3] > 0)
3520                                 Vector4Negate(joint[i].rotation, joint[i].rotation);
3521                         Vector4Normalize2(joint[i].rotation, joint[i].rotation);
3522                         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]);
3523                         Matrix4x4_Invert_Simple(&relinvbase, &relbase);
3524                         if (loadmodel->data_bones[i].parent >= 0)
3525                         {
3526                                 Matrix4x4_FromArray12FloatD3D(&pinvbase, loadmodel->data_baseboneposeinverse + 12*loadmodel->data_bones[i].parent);
3527                                 Matrix4x4_Concat(&invbase, &relinvbase, &pinvbase);
3528                                 Matrix4x4_ToArray12FloatD3D(&invbase, loadmodel->data_baseboneposeinverse + 12*i);
3529                         }
3530                         else Matrix4x4_ToArray12FloatD3D(&relinvbase, loadmodel->data_baseboneposeinverse + 12*i);
3531                 }
3532         }
3533
3534         // set up the animscenes based on the anims
3535         for (i = 0;i < (int)header.num_anims;i++)
3536         {
3537                 iqmanim_t anim;
3538
3539                 memcpy(&anim, &anims[i], sizeof(iqmanim_t));
3540                 anim.name = LittleLong(anim.name);
3541                 anim.first_frame = LittleLong(anim.first_frame);
3542                 anim.num_frames = LittleLong(anim.num_frames);
3543                 anim.framerate = LittleFloat(anim.framerate);
3544                 anim.flags = LittleLong(anim.flags);
3545                 dp_strlcpy(loadmodel->animscenes[i].name, &text[anim.name], sizeof(loadmodel->animscenes[i].name));
3546                 loadmodel->animscenes[i].firstframe = anim.first_frame;
3547                 loadmodel->animscenes[i].framecount = anim.num_frames;
3548                 loadmodel->animscenes[i].loop = ((anim.flags & IQM_LOOP) != 0);
3549                 loadmodel->animscenes[i].framerate = anim.framerate;
3550         }
3551         if (header.num_anims <= 0)
3552         {
3553                 dp_strlcpy(loadmodel->animscenes[0].name, "static", sizeof(loadmodel->animscenes[0].name));
3554                 loadmodel->animscenes[0].firstframe = 0;
3555                 loadmodel->animscenes[0].framecount = 1;
3556                 loadmodel->animscenes[0].loop = true;
3557                 loadmodel->animscenes[0].framerate = 10;
3558         }
3559
3560         loadmodel->surfmesh.isanimated = loadmodel->num_bones > 1 || loadmodel->numframes > 1 || (loadmodel->animscenes && loadmodel->animscenes[0].framecount > 1);
3561         if(mod_alias_force_animated.string[0])
3562                 loadmodel->surfmesh.isanimated = mod_alias_force_animated.integer != 0;
3563
3564         biggestorigin = 0;
3565         if (header.version == 1)
3566         {
3567                 iqmpose1_t *inposes1 = (iqmpose1_t *)(pbase + header.ofs_poses);
3568
3569                 if (header.num_poses)
3570                         pose1 = (iqmpose1_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose1_t));
3571                 for (i = 0;i < (int)header.num_poses;i++)
3572                 {
3573                         float f;
3574                         iqmpose1_t inpose;
3575
3576                         memcpy(&inpose, &inposes1[i], sizeof(iqmpose1_t));
3577                         pose1[i].parent = LittleLong(inpose.parent);
3578                         pose1[i].channelmask = LittleLong(inpose.channelmask);
3579                         for (j = 0;j < 9;j++)
3580                         {
3581                                 pose1[i].channeloffset[j] = LittleFloat(inpose.channeloffset[j]);
3582                                 pose1[i].channelscale[j] = LittleFloat(inpose.channelscale[j]);
3583                         }
3584                         f = fabs(pose1[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
3585                         f = fabs(pose1[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
3586                         f = fabs(pose1[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
3587                         f = fabs(pose1[i].channeloffset[0] + 0xFFFF*pose1[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
3588                         f = fabs(pose1[i].channeloffset[1] + 0xFFFF*pose1[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
3589                         f = fabs(pose1[i].channeloffset[2] + 0xFFFF*pose1[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
3590                 }
3591                 if (header.num_frames <= 0)
3592                 {
3593                         for (i = 0;i < loadmodel->num_bones;i++)
3594                         {
3595                                 float f;
3596                                 f = fabs(joint1[i].origin[0]); biggestorigin = max(biggestorigin, f);
3597                                 f = fabs(joint1[i].origin[1]); biggestorigin = max(biggestorigin, f);
3598                                 f = fabs(joint1[i].origin[2]); biggestorigin = max(biggestorigin, f);
3599                         }
3600                 }
3601         }
3602         else
3603         {
3604                 iqmpose_t *inposes = (iqmpose_t *)(pbase + header.ofs_poses);
3605
3606                 if (header.num_poses)
3607                         pose = (iqmpose_t *)Mem_Alloc(loadmodel->mempool, header.num_poses * sizeof(iqmpose_t));
3608                 for (i = 0;i < (int)header.num_poses;i++)
3609                 {
3610                         float f;
3611                         iqmpose_t inpose;
3612
3613                         memcpy(&inpose, &inposes[i], sizeof(iqmpose_t));
3614                         pose[i].parent = LittleLong(inpose.parent);
3615                         pose[i].channelmask = LittleLong(inpose.channelmask);
3616                         for (j = 0;j < 10;j++)
3617                         {
3618                                 pose[i].channeloffset[j] = LittleFloat(inpose.channeloffset[j]);
3619                                 pose[i].channelscale[j] = LittleFloat(inpose.channelscale[j]);
3620                         }
3621                         f = fabs(pose[i].channeloffset[0]); biggestorigin = max(biggestorigin, f);
3622                         f = fabs(pose[i].channeloffset[1]); biggestorigin = max(biggestorigin, f);
3623                         f = fabs(pose[i].channeloffset[2]); biggestorigin = max(biggestorigin, f);
3624                         f = fabs(pose[i].channeloffset[0] + 0xFFFF*pose[i].channelscale[0]); biggestorigin = max(biggestorigin, f);
3625                         f = fabs(pose[i].channeloffset[1] + 0xFFFF*pose[i].channelscale[1]); biggestorigin = max(biggestorigin, f);
3626                         f = fabs(pose[i].channeloffset[2] + 0xFFFF*pose[i].channelscale[2]); biggestorigin = max(biggestorigin, f);
3627                 }
3628                 if (header.num_frames <= 0)
3629                 {
3630                         for (i = 0;i < loadmodel->num_bones;i++)
3631                         {
3632                                 float f;
3633                                 f = fabs(joint[i].origin[0]); biggestorigin = max(biggestorigin, f);
3634                                 f = fabs(joint[i].origin[1]); biggestorigin = max(biggestorigin, f);
3635                                 f = fabs(joint[i].origin[2]); biggestorigin = max(biggestorigin, f);
3636                         }
3637                 }
3638         }
3639         loadmodel->num_posescale = biggestorigin / 32767.0f;
3640         loadmodel->num_poseinvscale = 1.0f / loadmodel->num_posescale;
3641
3642         // load the pose data
3643         // this unaligned memory access is safe (LittleShort reads as bytes)
3644         framedata = (const unsigned short *)(pbase + header.ofs_frames);
3645         if (header.version == 1)
3646         {
3647                 for (i = 0, k = 0;i < (int)header.num_frames;i++)
3648                 {
3649                         for (j = 0;j < (int)header.num_poses;j++, k++)
3650                         {
3651                                 float qx, qy, qz, qw;
3652                                 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));
3653                                 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));
3654                                 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));
3655                                 qx = pose1[j].channeloffset[3] + (pose1[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[3] : 0);
3656                                 qy = pose1[j].channeloffset[4] + (pose1[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[4] : 0);
3657                                 qz = pose1[j].channeloffset[5] + (pose1[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose1[j].channelscale[5] : 0);
3658                                 qw = 1.0f - (qx*qx + qy*qy + qz*qz);
3659                                 qw = qw > 0.0f ? -sqrt(qw) : 0.0f;
3660                                 loadmodel->data_poses7s[k*7 + 3] = 32767.0f * qx;
3661                                 loadmodel->data_poses7s[k*7 + 4] = 32767.0f * qy;
3662                                 loadmodel->data_poses7s[k*7 + 5] = 32767.0f * qz;
3663                                 loadmodel->data_poses7s[k*7 + 6] = 32767.0f * qw;
3664                                 // skip scale data for now
3665                                 if(pose1[j].channelmask&64) framedata++;
3666                                 if(pose1[j].channelmask&128) framedata++;
3667                                 if(pose1[j].channelmask&256) framedata++;
3668                         }
3669                 }
3670                 if (header.num_frames <= 0)
3671                 {
3672                         for (i = 0;i < loadmodel->num_bones;i++)
3673                         {
3674                                 float qx, qy, qz, qw;
3675                                 loadmodel->data_poses7s[i*7 + 0] = loadmodel->num_poseinvscale * joint1[i].origin[0];
3676                                 loadmodel->data_poses7s[i*7 + 1] = loadmodel->num_poseinvscale * joint1[i].origin[1];
3677                                 loadmodel->data_poses7s[i*7 + 2] = loadmodel->num_poseinvscale * joint1[i].origin[2];
3678                                 qx = joint1[i].rotation[0];
3679                                 qy = joint1[i].rotation[1];
3680                                 qz = joint1[i].rotation[2];
3681                                 qw = 1.0f - (qx*qx + qy*qy + qz*qz);
3682                                 qw = qw > 0.0f ? -sqrt(qw) : 0.0f;
3683                                 loadmodel->data_poses7s[i*7 + 3] = 32767.0f * qx;
3684                                 loadmodel->data_poses7s[i*7 + 4] = 32767.0f * qy;
3685                                 loadmodel->data_poses7s[i*7 + 5] = 32767.0f * qz;
3686                                 loadmodel->data_poses7s[i*7 + 6] = 32767.0f * qw;
3687                         }
3688                 }
3689         }
3690         else
3691         {
3692                 for (i = 0, k = 0;i < (int)header.num_frames;i++)
3693                 {
3694                         for (j = 0;j < (int)header.num_poses;j++, k++)
3695                         {
3696                                 float rot[4];
3697                                 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));
3698                                 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));
3699                                 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));
3700                                 rot[0] = pose[j].channeloffset[3] + (pose[j].channelmask&8 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[3] : 0);
3701                                 rot[1] = pose[j].channeloffset[4] + (pose[j].channelmask&16 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[4] : 0);
3702                                 rot[2] = pose[j].channeloffset[5] + (pose[j].channelmask&32 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[5] : 0);
3703                                 rot[3] = pose[j].channeloffset[6] + (pose[j].channelmask&64 ? (unsigned short)LittleShort(*framedata++) * pose[j].channelscale[6] : 0);
3704                                 if (rot[3] > 0)
3705                                         Vector4Negate(rot, rot);
3706                                 Vector4Normalize2(rot, rot);
3707                                 loadmodel->data_poses7s[k*7 + 3] = 32767.0f * rot[0];
3708                                 loadmodel->data_poses7s[k*7 + 4] = 32767.0f * rot[1];
3709                                 loadmodel->data_poses7s[k*7 + 5] = 32767.0f * rot[2];
3710                                 loadmodel->data_poses7s[k*7 + 6] = 32767.0f * rot[3];
3711                                 // skip scale data for now
3712                                 if(pose[j].channelmask&128) framedata++;
3713                                 if(pose[j].channelmask&256) framedata++;
3714                                 if(pose[j].channelmask&512) framedata++;
3715                         }
3716                 }
3717                 if (header.num_frames <= 0)
3718                 {
3719                         for (i = 0;i < loadmodel->num_bones;i++)
3720                         {
3721                                 loadmodel->data_poses7s[i*7 + 0] = loadmodel->num_poseinvscale * joint[i].origin[0];
3722                                 loadmodel->data_poses7s[i*7 + 1] = loadmodel->num_poseinvscale * joint[i].origin[1];
3723                                 loadmodel->data_poses7s[i*7 + 2] = loadmodel->num_poseinvscale * joint[i].origin[2];
3724                                 loadmodel->data_poses7s[i*7 + 3] = 32767.0f * joint[i].rotation[0];
3725                                 loadmodel->data_poses7s[i*7 + 4] = 32767.0f * joint[i].rotation[1];
3726                                 loadmodel->data_poses7s[i*7 + 5] = 32767.0f * joint[i].rotation[2];
3727                                 loadmodel->data_poses7s[i*7 + 6] = 32767.0f * joint[i].rotation[3];
3728                         }
3729                 }
3730         }
3731
3732         // load bounding box data
3733         if (header.ofs_bounds)
3734         {
3735                 float xyradius = 0, radius = 0;
3736                 VectorClear(loadmodel->normalmins);
3737                 VectorClear(loadmodel->normalmaxs);
3738                 for (i = 0; i < (int)header.num_frames;i++)
3739                 {
3740                         iqmbounds_t bound;
3741                         bound.mins[0] = LittleFloat(bounds[i].mins[0]);
3742                         bound.mins[1] = LittleFloat(bounds[i].mins[1]);
3743                         bound.mins[2] = LittleFloat(bounds[i].mins[2]);
3744                         bound.maxs[0] = LittleFloat(bounds[i].maxs[0]);
3745                         bound.maxs[1] = LittleFloat(bounds[i].maxs[1]);
3746                         bound.maxs[2] = LittleFloat(bounds[i].maxs[2]);
3747                         bound.xyradius = LittleFloat(bounds[i].xyradius);
3748                         bound.radius = LittleFloat(bounds[i].radius);
3749                         if (!i)
3750                         {
3751                                 VectorCopy(bound.mins, loadmodel->normalmins);
3752                                 VectorCopy(bound.maxs, loadmodel->normalmaxs);
3753                         }
3754                         else
3755                         {
3756                                 if (loadmodel->normalmins[0] > bound.mins[0]) loadmodel->normalmins[0] = bound.mins[0];
3757                                 if (loadmodel->normalmins[1] > bound.mins[1]) loadmodel->normalmins[1] = bound.mins[1];
3758                                 if (loadmodel->normalmins[2] > bound.mins[2]) loadmodel->normalmins[2] = bound.mins[2];
3759                                 if (loadmodel->normalmaxs[0] < bound.maxs[0]) loadmodel->normalmaxs[0] = bound.maxs[0];
3760                                 if (loadmodel->normalmaxs[1] < bound.maxs[1]) loadmodel->normalmaxs[1] = bound.maxs[1];
3761                                 if (loadmodel->normalmaxs[2] < bound.maxs[2]) loadmodel->normalmaxs[2] = bound.maxs[2];
3762                         }
3763                         if (bound.xyradius > xyradius)
3764                                 xyradius = bound.xyradius;
3765                         if (bound.radius > radius)
3766                                 radius = bound.radius;
3767                 }
3768                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -xyradius;
3769                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = xyradius;
3770                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
3771                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
3772                 loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
3773                 loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
3774                 loadmodel->radius = radius;
3775                 loadmodel->radius2 = radius * radius;
3776         }
3777
3778         // load triangle data
3779         // this unaligned memory access is safe (LittleLong reads as bytes)
3780         inelements = (const unsigned int *)(pbase + header.ofs_triangles);
3781         outelements = loadmodel->surfmesh.data_element3i;
3782         for (i = 0;i < (int)header.num_triangles;i++)
3783         {
3784                 outelements[0] = LittleLong(inelements[0]);
3785                 outelements[1] = LittleLong(inelements[1]);
3786                 outelements[2] = LittleLong(inelements[2]);
3787                 outelements += 3;
3788                 inelements += 3;
3789         }
3790         if (loadmodel->surfmesh.data_element3s)
3791                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
3792                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
3793         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles, 0, header.num_vertexes, __FILE__, __LINE__);
3794
3795         // load vertex data
3796         // this unaligned memory access is safe (LittleFloat reads as bytes)
3797         outvertex = loadmodel->surfmesh.data_vertex3f;
3798         for (i = 0;i < (int)header.num_vertexes;i++)
3799         {
3800                 outvertex[0] = LittleFloat(vposition[0]);
3801                 outvertex[1] = LittleFloat(vposition[1]);
3802                 outvertex[2] = LittleFloat(vposition[2]);
3803                 vposition += 3;
3804                 outvertex += 3;
3805         }
3806
3807         outtexcoord = loadmodel->surfmesh.data_texcoordtexture2f;
3808         // this unaligned memory access is safe (LittleFloat reads as bytes)
3809         for (i = 0;i < (int)header.num_vertexes;i++)
3810         {
3811                 outtexcoord[0] = LittleFloat(vtexcoord[0]);
3812                 outtexcoord[1] = LittleFloat(vtexcoord[1]);
3813                 vtexcoord += 2;
3814                 outtexcoord += 2;
3815         }
3816
3817         // this unaligned memory access is safe (LittleFloat reads as bytes)
3818         if(vnormal)
3819         {
3820                 outnormal = loadmodel->surfmesh.data_normal3f;
3821                 for (i = 0;i < (int)header.num_vertexes;i++)
3822                 {
3823                         outnormal[0] = LittleFloat(vnormal[0]);
3824                         outnormal[1] = LittleFloat(vnormal[1]);
3825                         outnormal[2] = LittleFloat(vnormal[2]);
3826                         vnormal += 3;
3827                         outnormal += 3;
3828                 }
3829         }
3830
3831         // this unaligned memory access is safe (LittleFloat reads as bytes)
3832         if(vnormal && vtangent)
3833         {
3834                 outnormal = loadmodel->surfmesh.data_normal3f;
3835                 outsvector = loadmodel->surfmesh.data_svector3f;
3836                 outtvector = loadmodel->surfmesh.data_tvector3f;
3837                 for (i = 0;i < (int)header.num_vertexes;i++)
3838                 {
3839                         outsvector[0] = LittleFloat(vtangent[0]);
3840                         outsvector[1] = LittleFloat(vtangent[1]);
3841                         outsvector[2] = LittleFloat(vtangent[2]);
3842                         if(LittleFloat(vtangent[3]) < 0)
3843                                 CrossProduct(outsvector, outnormal, outtvector);
3844                         else
3845                                 CrossProduct(outnormal, outsvector, outtvector);
3846                         vtangent += 4;
3847                         outnormal += 3;
3848                         outsvector += 3;
3849                         outtvector += 3;
3850                 }
3851         }
3852
3853         // this unaligned memory access is safe (all bytes)
3854         if (vblendindexes && vblendweights)
3855         {
3856                 for (i = 0; i < (int)header.num_vertexes;i++)
3857                 {
3858                         blendweights_t weights;
3859                         memcpy(weights.index, vblendindexes + i*4, 4);
3860                         memcpy(weights.influence, vblendweights + i*4, 4);
3861                         loadmodel->surfmesh.blends[i] = Mod_Skeletal_AddBlend(loadmodel, &weights);
3862                         loadmodel->surfmesh.data_skeletalindex4ub[i*4  ] = weights.index[0];
3863                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+1] = weights.index[1];
3864                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+2] = weights.index[2];
3865                         loadmodel->surfmesh.data_skeletalindex4ub[i*4+3] = weights.index[3];
3866                         loadmodel->surfmesh.data_skeletalweight4ub[i*4  ] = weights.influence[0];
3867                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+1] = weights.influence[1];
3868                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+2] = weights.influence[2];
3869                         loadmodel->surfmesh.data_skeletalweight4ub[i*4+3] = weights.influence[3];
3870                 }
3871         }
3872
3873         if (vcolor4f)
3874         {
3875                 outcolor = loadmodel->surfmesh.data_lightmapcolor4f;
3876                 // this unaligned memory access is safe (LittleFloat reads as bytes)
3877                 for (i = 0;i < (int)header.num_vertexes;i++)
3878                 {
3879                         outcolor[0] = LittleFloat(vcolor4f[0]);
3880                         outcolor[1] = LittleFloat(vcolor4f[1]);
3881                         outcolor[2] = LittleFloat(vcolor4f[2]);
3882                         outcolor[3] = LittleFloat(vcolor4f[3]);
3883                         vcolor4f += 4;
3884                         outcolor += 4;
3885                 }
3886         }
3887         else if (vcolor4ub)
3888         {
3889                 outcolor = loadmodel->surfmesh.data_lightmapcolor4f;
3890                 // this unaligned memory access is safe (all bytes)
3891                 for (i = 0;i < (int)header.num_vertexes;i++)
3892                 {
3893                         outcolor[0] = vcolor4ub[0] * (1.0f / 255.0f);
3894                         outcolor[1] = vcolor4ub[1] * (1.0f / 255.0f);
3895                         outcolor[2] = vcolor4ub[2] * (1.0f / 255.0f);
3896                         outcolor[3] = vcolor4ub[3] * (1.0f / 255.0f);
3897                         vcolor4ub += 4;
3898                         outcolor += 4;
3899                 }
3900         }
3901
3902         // load meshes
3903         for (i = 0;i < (int)header.num_meshes;i++)
3904         {
3905                 iqmmesh_t mesh;
3906                 msurface_t *surface;
3907
3908                 memcpy(&mesh, &meshes[i], sizeof(iqmmesh_t));
3909                 mesh.name = LittleLong(mesh.name);
3910                 mesh.material = LittleLong(mesh.material);
3911                 mesh.first_vertex = LittleLong(mesh.first_vertex);
3912                 mesh.num_vertexes = LittleLong(mesh.num_vertexes);
3913                 mesh.first_triangle = LittleLong(mesh.first_triangle);
3914                 mesh.num_triangles = LittleLong(mesh.num_triangles);
3915
3916                 loadmodel->modelsurfaces_sorted[i] = i;
3917                 surface = loadmodel->data_surfaces + i;
3918                 surface->texture = loadmodel->data_textures + i;
3919                 surface->num_firsttriangle = mesh.first_triangle;
3920                 surface->num_triangles = mesh.num_triangles;
3921                 surface->num_firstvertex = mesh.first_vertex;
3922                 surface->num_vertices = mesh.num_vertexes;
3923
3924                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, &text[mesh.name], &text[mesh.material]);
3925         }
3926
3927         Mod_FreeSkinFiles(skinfiles);
3928         Mod_MakeSortedSurfaces(loadmodel);
3929
3930         // compute all the mesh information that was not loaded from the file
3931         if (!vnormal)
3932                 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);
3933         if (!vnormal || !vtangent)
3934                 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);
3935         if (!header.ofs_bounds)
3936                 Mod_Alias_CalculateBoundingBox();
3937
3938         // Always make a BIH for the first frame, we can use it where possible.
3939         Mod_MakeCollisionBIH(loadmodel, true, &loadmodel->collision_bih);
3940         if (!loadmodel->surfmesh.isanimated)
3941         {
3942                 loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
3943                 loadmodel->TraceBrush = Mod_CollisionBIH_TraceBrush;
3944                 loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
3945                 loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
3946                 loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
3947         }
3948
3949         if (joint)  { Mem_Free(joint);  joint  = NULL; }
3950         if (joint1) { Mem_Free(joint1); joint1 = NULL; }
3951         if (pose)   { Mem_Free(pose);   pose   = NULL; }
3952         if (pose1)  { Mem_Free(pose1);  pose1  = NULL; }
3953 }