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
  25 cvar_t r_skeletal_debugbone = {0, "r_skeletal_debugbone", "-1", "development cvar for testing skeletal model code"};
  26 cvar_t r_skeletal_debugbonecomponent = {0, "r_skeletal_debugbonecomponent", "3", "development cvar for testing skeletal model code"};
  27 cvar_t r_skeletal_debugbonevalue = {0, "r_skeletal_debugbonevalue", "100", "development cvar for testing skeletal model code"};
  28 cvar_t r_skeletal_debugtranslatex = {0, "r_skeletal_debugtranslatex", "1", "development cvar for testing skeletal model code"};
  29 cvar_t r_skeletal_debugtranslatey = {0, "r_skeletal_debugtranslatey", "1", "development cvar for testing skeletal model code"};
  30 cvar_t r_skeletal_debugtranslatez = {0, "r_skeletal_debugtranslatez", "1", "development cvar for testing skeletal model code"};
  31
  32 float mod_md3_sin[320];
  33
  34 void Mod_AliasInit (void)
  35 {
  36         int i;
  37         Cvar_RegisterVariable(&r_skeletal_debugbone);
  38         Cvar_RegisterVariable(&r_skeletal_debugbonecomponent);
  39         Cvar_RegisterVariable(&r_skeletal_debugbonevalue);
  40         Cvar_RegisterVariable(&r_skeletal_debugtranslatex);
  41         Cvar_RegisterVariable(&r_skeletal_debugtranslatey);
  42         Cvar_RegisterVariable(&r_skeletal_debugtranslatez);
  43         for (i = 0;i < 320;i++)
  44                 mod_md3_sin[i] = sin(i * M_PI * 2.0f / 256.0);
  45 }
  46
  47 void Mod_Alias_GetMesh_Vertices(const model_t *model, const frameblend_t *frameblend, float *vertex3f, float *normal3f, float *svector3f, float *tvector3f)
  48 {
  49         if (model->surfmesh.data_vertexweightindex4i)
  50         {
  51                 int i, k, blends;
  52                 const float *v = model->surfmesh.data_vertex3f;
  53                 const float *n = model->surfmesh.data_normal3f;
  54                 const float *sv = model->surfmesh.data_svector3f;
  55                 const float *tv = model->surfmesh.data_tvector3f;
  56                 const int *wi = model->surfmesh.data_vertexweightindex4i;
  57                 const float *wf = model->surfmesh.data_vertexweightinfluence4f;
  58                 float *matrix, m[12], bonepose[256][12], boneposerelative[256][12];
  59                 // vertex weighted skeletal
  60                 memset(vertex3f, 0, model->surfmesh.num_vertices * sizeof(float[3]));
  61                 if (normal3f)
  62                         memset(normal3f, 0, model->surfmesh.num_vertices * sizeof(float[3]));
  63                 if (svector3f)
  64                 {
  65                         memset(svector3f, 0, model->surfmesh.num_vertices * sizeof(float[3]));
  66                         memset(tvector3f, 0, model->surfmesh.num_vertices * sizeof(float[3]));
  67                 }
  68                 // interpolate matrices and concatenate them to their parents
  69                 for (i = 0;i < model->num_bones;i++)
  70                 {
  71                         for (k = 0;k < 12;k++)
  72                                 m[k] = 0;
  73                         for (blends = 0;blends < 4 && frameblend[blends].lerp > 0;blends++)
  74                         {
  75                                 matrix = model->data_poses + (frameblend[blends].frame * model->num_bones + i) * 12;
  76                                 for (k = 0;k < 12;k++)
  77                                         m[k] += matrix[k] * frameblend[blends].lerp;
  78                         }
  79                         if (i == r_skeletal_debugbone.integer)
  80                                 m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
  81                         m[3] *= r_skeletal_debugtranslatex.value;
  82                         m[7] *= r_skeletal_debugtranslatey.value;
  83                         m[11] *= r_skeletal_debugtranslatez.value;
  84                         if (model->data_bones[i].parent >= 0)
  85                                 R_ConcatTransforms(bonepose[model->data_bones[i].parent], m, bonepose[i]);
  86                         else
  87                                 for (k = 0;k < 12;k++)
  88                                         bonepose[i][k] = m[k];
  89                         // create a relative deformation matrix to describe displacement
  90                         // from the base mesh, which is used by the actual weighting
  91                         R_ConcatTransforms(bonepose[i], model->data_baseboneposeinverse + i * 12, boneposerelative[i]);
  92                 }
  93                 // blend the vertex bone weights
  94                 if (svector3f)
  95                 {
  96                         for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, n += 3, sv += 3, tv += 3, wi += 4, wf += 4, vertex3f += 3, normal3f += 3, svector3f += 3, tvector3f += 3)
  97                         {
  98                                 for (k = 0;k < 4 && wf[k];k++)
  99                                 {
 100                                         const float *m = boneposerelative[wi[k]];
 101                                         float f = wf[k];
 102                                         vertex3f[0] += f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
 103                                         vertex3f[1] += f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
 104                                         vertex3f[2] += f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
 105                                         normal3f[0] += f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
 106                                         normal3f[1] += f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
 107                                         normal3f[2] += f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
 108                                         svector3f[0] += f * (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
 109                                         svector3f[1] += f * (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
 110                                         svector3f[2] += f * (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
 111                                         tvector3f[0] += f * (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
 112                                         tvector3f[1] += f * (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
 113                                         tvector3f[2] += f * (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
 114                                 }
 115                         }
 116                 }
 117                 else if (normal3f)
 118                 {
 119                         for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, n += 3, wi += 4, wf += 4, vertex3f += 3, normal3f += 3)
 120                         {
 121                                 for (k = 0;k < 4 && wf[k];k++)
 122                                 {
 123                                         const float *m = boneposerelative[wi[k]];
 124                                         float f = wf[k];
 125                                         vertex3f[0] += f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
 126                                         vertex3f[1] += f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
 127                                         vertex3f[2] += f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
 128                                         normal3f[0] += f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
 129                                         normal3f[1] += f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
 130                                         normal3f[2] += f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
 131                                 }
 132                         }
 133                 }
 134                 else
 135                 {
 136                         for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, wi += 4, wf += 4, vertex3f += 3)
 137                         {
 138                                 for (k = 0;k < 4 && wf[k];k++)
 139                                 {
 140                                         const float *m = boneposerelative[wi[k]];
 141                                         float f = wf[k];
 142                                         vertex3f[0] += f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
 143                                         vertex3f[1] += f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
 144                                         vertex3f[2] += f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
 145                                 }
 146                         }
 147                 }
 148         }
 149         else if (model->surfmesh.data_morphmd3vertex)
 150         {
 151                 // vertex morph
 152                 int i, numblends, blendnum;
 153                 int numverts = model->surfmesh.num_vertices;
 154                 numblends = 0;
 155                 for (blendnum = 0;blendnum < 4;blendnum++)
 156                 {
 157                         //VectorMA(translate, model->surfmesh.num_morphmdlframetranslate, frameblend[blendnum].lerp, translate);
 158                         if (frameblend[blendnum].lerp > 0)
 159                                 numblends = blendnum + 1;
 160                 }
 161                 memset(vertex3f, 0, numverts * sizeof(float[3]));
 162                 if (normal3f)
 163                         for (i = 0;i < numverts;i++)
 164                                 VectorClear(normal3f + i * 3);
 165                 for (blendnum = 0;blendnum < numblends;blendnum++)
 166                 {
 167                         const md3vertex_t *verts = model->surfmesh.data_morphmd3vertex + numverts * frameblend[blendnum].frame;
 168                         float scale = frameblend[blendnum].lerp * (1.0f / 64.0f);
 169                         for (i = 0;i < numverts;i++)
 170                         {
 171                                 vertex3f[i * 3 + 0] += verts[i].origin[0] * scale;
 172                                 vertex3f[i * 3 + 1] += verts[i].origin[1] * scale;
 173                                 vertex3f[i * 3 + 2] += verts[i].origin[2] * scale;
 174                         }
 175                         // the yaw and pitch stored in md3 models are 8bit quantized angles
 176                         // (0-255), and as such a lookup table is very well suited to
 177                         // decoding them, and since cosine is equivilant to sine with an
 178                         // extra 45 degree rotation, this uses one lookup table for both
 179                         // sine and cosine with a +64 bias to get cosine.
 180                         if (normal3f)
 181                         {
 182                                 float lerp = frameblend[blendnum].lerp;
 183                                 for (i = 0;i < numverts;i++)
 184                                 {
 185                                         normal3f[i * 3 + 0] += mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
 186                                         normal3f[i * 3 + 1] += mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
 187                                         normal3f[i * 3 + 2] +=                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
 188                                 }
 189                         }
 190                 }
 191                 if (normal3f)
 192                         if (svector3f)
 193                                 Mod_BuildTextureVectorsFromNormals(0, model->surfmesh.num_vertices, model->surfmesh.num_triangles, vertex3f, model->surfmesh.data_texcoordtexture2f, normal3f, model->surfmesh.data_element3i, svector3f, tvector3f, r_smoothnormals_areaweighting.integer);
 194         }
 195         else if (model->surfmesh.data_morphmdlvertex)
 196         {
 197                 // vertex morph
 198                 int i, numblends, blendnum;
 199                 int numverts = model->surfmesh.num_vertices;
 200                 float translate[3];
 201                 VectorClear(translate);
 202                 numblends = 0;
 203                 for (blendnum = 0;blendnum < 4;blendnum++)
 204                 {
 205                         if (model->surfmesh.data_morphmd2framesize6f)
 206                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6 + 3, translate);
 207                         else
 208                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.num_morphmdlframetranslate, translate);
 209                         if (frameblend[blendnum].lerp > 0)
 210                                 numblends = blendnum + 1;
 211                 }
 212                 for (i = 0;i < numverts;i++)
 213                         VectorCopy(translate, vertex3f + i * 3);
 214                 if (normal3f)
 215                         for (i = 0;i < numverts;i++)
 216                                 VectorClear(normal3f + i * 3);
 217                 for (blendnum = 0;blendnum < numblends;blendnum++)
 218                 {
 219                         const trivertx_t *verts = model->surfmesh.data_morphmdlvertex + numverts * frameblend[blendnum].frame;
 220                         float scale[3];
 221                         if (model->surfmesh.data_morphmd2framesize6f)
 222                                 VectorScale(model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6, frameblend[blendnum].lerp, scale);
 223                         else
 224                                 VectorScale(model->surfmesh.num_morphmdlframescale, frameblend[blendnum].lerp, scale);
 225                         for (i = 0;i < numverts;i++)
 226                         {
 227                                 vertex3f[i * 3 + 0] += verts[i].v[0] * scale[0];
 228                                 vertex3f[i * 3 + 1] += verts[i].v[1] * scale[1];
 229                                 vertex3f[i * 3 + 2] += verts[i].v[2] * scale[2];
 230                         }
 231                         // the vertex normals in mdl models are an index into a table of
 232                         // 162 unique values, this very crude quantization reduces the
 233                         // vertex normal to only one byte, which saves a lot of space but
 234                         // also makes lighting pretty coarse
 235                         if (normal3f)
 236                         {
 237                                 float lerp = frameblend[blendnum].lerp;
 238                                 for (i = 0;i < numverts;i++)
 239                                 {
 240                                         const float *vn = m_bytenormals[verts[i].lightnormalindex];
 241                                         VectorMA(normal3f + i*3, lerp, vn, normal3f + i*3);
 242                                 }
 243                         }
 244                 }
 245                 if (normal3f)
 246                         if (svector3f)
 247                                 Mod_BuildTextureVectorsFromNormals(0, model->surfmesh.num_vertices, model->surfmesh.num_triangles, vertex3f, model->surfmesh.data_texcoordtexture2f, normal3f, model->surfmesh.data_element3i, svector3f, tvector3f, r_smoothnormals_areaweighting.integer);
 248         }
 249         else
 250                 Host_Error("model %s has no skeletal or vertex morph animation data", model->name);
 251 }
 252
 253 int Mod_Alias_GetTagMatrix(const model_t *model, int poseframe, int tagindex, matrix4x4_t *outmatrix)
 254 {
 255         const float *boneframe;
 256         float tempbonematrix[12], bonematrix[12];
 257         *outmatrix = identitymatrix;
 258         if (model->num_bones)
 259         {
 260                 if (tagindex < 0 || tagindex >= model->num_bones)
 261                         return 4;
 262                 if (poseframe >= model->num_poses)
 263                         return 6;
 264                 boneframe = model->data_poses + poseframe * model->num_bones * 12;
 265                 memcpy(bonematrix, boneframe + tagindex * 12, sizeof(float[12]));
 266                 while (model->data_bones[tagindex].parent >= 0)
 267                 {
 268                         memcpy(tempbonematrix, bonematrix, sizeof(float[12]));
 269                         R_ConcatTransforms(boneframe + model->data_bones[tagindex].parent * 12, tempbonematrix, bonematrix);
 270                         tagindex = model->data_bones[tagindex].parent;
 271                 }
 272                 Matrix4x4_FromArray12FloatD3D(outmatrix, bonematrix);
 273         }
 274         else if (model->num_tags)
 275         {
 276                 if (tagindex < 0 || tagindex >= model->num_tags)
 277                         return 4;
 278                 if (poseframe >= model->num_tagframes)
 279                         return 6;
 280                 Matrix4x4_FromArray12FloatGL(outmatrix, model->data_tags[poseframe * model->num_tags + tagindex].matrixgl);
 281         }
 282         return 0;
 283 }
 284
 285 int Mod_Alias_GetTagIndexForName(const model_t *model, unsigned int skin, const char *tagname)
 286 {
 287         int i;
 288         if (model->data_overridetagnamesforskin && skin < (unsigned int)model->numskins && model->data_overridetagnamesforskin[(unsigned int)skin].num_overridetagnames)
 289                 for (i = 0;i < model->data_overridetagnamesforskin[skin].num_overridetagnames;i++)
 290                         if (!strcasecmp(tagname, model->data_overridetagnamesforskin[skin].data_overridetagnames[i].name))
 291                                 return i + 1;
 292         if (model->num_bones)
 293                 for (i = 0;i < model->num_bones;i++)
 294                         if (!strcasecmp(tagname, model->data_bones[i].name))
 295                                 return i + 1;
 296         if (model->num_tags)
 297                 for (i = 0;i < model->num_tags;i++)
 298                         if (!strcasecmp(tagname, model->data_tags[i].name))
 299                                 return i + 1;
 300         return 0;
 301 }
 302
 303 static void Mod_BuildBaseBonePoses(void)
 304 {
 305         int i, k;
 306         double scale;
 307         float *in12f = loadmodel->data_poses;
 308         float *out12f = loadmodel->data_basebonepose;
 309         float *outinv12f = loadmodel->data_baseboneposeinverse;
 310         for (i = 0;i < loadmodel->num_bones;i++, in12f += 12, out12f += 12, outinv12f += 12)
 311         {
 312                 if (loadmodel->data_bones[i].parent >= 0)
 313                         R_ConcatTransforms(loadmodel->data_basebonepose + 12 * loadmodel->data_bones[i].parent, in12f, out12f);
 314                 else
 315                         for (k = 0;k < 12;k++)
 316                                 out12f[k] = in12f[k];
 317
 318                 // invert The Matrix
 319
 320                 // we only support uniform scaling, so assume the first row is enough
 321                 // (note the lack of sqrt here, because we're trying to undo the scaling,
 322                 // this means multiplying by the inverse scale twice - squaring it, which
 323                 // makes the sqrt a waste of time)
 324                 scale = 1.0 / (out12f[ 0] * out12f[ 0] + out12f[ 1] * out12f[ 1] + out12f[ 2] * out12f[ 2]);
 325
 326                 // invert the rotation by transposing and multiplying by the squared
 327                 // recipricol of the input matrix scale as described above
 328                 outinv12f[ 0] = (float)(out12f[ 0] * scale);
 329                 outinv12f[ 1] = (float)(out12f[ 4] * scale);
 330                 outinv12f[ 2] = (float)(out12f[ 8] * scale);
 331                 outinv12f[ 4] = (float)(out12f[ 1] * scale);
 332                 outinv12f[ 5] = (float)(out12f[ 5] * scale);
 333                 outinv12f[ 6] = (float)(out12f[ 9] * scale);
 334                 outinv12f[ 8] = (float)(out12f[ 2] * scale);
 335                 outinv12f[ 9] = (float)(out12f[ 6] * scale);
 336                 outinv12f[10] = (float)(out12f[10] * scale);
 337
 338                 // invert the translate
 339                 outinv12f[ 3] = -(out12f[ 3] * outinv12f[ 0] + out12f[ 7] * outinv12f[ 1] + out12f[11] * outinv12f[ 2]);
 340                 outinv12f[ 7] = -(out12f[ 3] * outinv12f[ 4] + out12f[ 7] * outinv12f[ 5] + out12f[11] * outinv12f[ 6]);
 341                 outinv12f[11] = -(out12f[ 3] * outinv12f[ 8] + out12f[ 7] * outinv12f[ 9] + out12f[11] * outinv12f[10]);
 342         }
 343 }
 344
 345 static void Mod_Alias_CalculateBoundingBox(void)
 346 {
 347         int i, j;
 348         int vnum;
 349         qboolean firstvertex = true;
 350         float dist, yawradius, radius;
 351         float *v;
 352         float *vertex3f;
 353         frameblend_t frameblend[4];
 354         memset(frameblend, 0, sizeof(frameblend));
 355         frameblend[0].lerp = 1;
 356         vertex3f = Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3]));
 357         VectorClear(loadmodel->normalmins);
 358         VectorClear(loadmodel->normalmaxs);
 359         yawradius = 0;
 360         radius = 0;
 361         for (i = 0;i < loadmodel->numframes;i++)
 362         {
 363                 for (j = 0, frameblend[0].frame = loadmodel->animscenes[i].firstframe;j < loadmodel->animscenes[i].framecount;j++, frameblend[0].frame++)
 364                 {
 365                         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, vertex3f, NULL, NULL, NULL);
 366                         for (vnum = 0, v = vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
 367                         {
 368                                 if (firstvertex)
 369                                 {
 370                                         firstvertex = false;
 371                                         VectorCopy(v, loadmodel->normalmins);
 372                                         VectorCopy(v, loadmodel->normalmaxs);
 373                                 }
 374                                 else
 375                                 {
 376                                         if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
 377                                         if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
 378                                         if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
 379                                         if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
 380                                         if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
 381                                         if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
 382                                 }
 383                                 dist = v[0] * v[0] + v[1] * v[1];
 384                                 if (yawradius < dist)
 385                                         yawradius = dist;
 386                                 dist += v[2] * v[2];
 387                                 if (radius < dist)
 388                                         radius = dist;
 389                         }
 390                 }
 391         }
 392         Mem_Free(vertex3f);
 393         radius = sqrt(radius);
 394         yawradius = sqrt(yawradius);
 395         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
 396         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
 397         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 398         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 399         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
 400         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
 401         loadmodel->radius = radius;
 402         loadmodel->radius2 = radius * radius;
 403 }
 404
 405 static void Mod_Alias_Mesh_CompileFrameZero(void)
 406 {
 407         frameblend_t frameblend[4] = {{0, 1}, {0, 0}, {0, 0}, {0, 0}};
 408         loadmodel->surfmesh.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3][4]));
 409         loadmodel->surfmesh.data_svector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 3;
 410         loadmodel->surfmesh.data_tvector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 6;
 411         loadmodel->surfmesh.data_normal3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 9;
 412         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL);
 413         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
 414         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
 415 }
 416
 417 static void Mod_MDLMD2MD3_TraceBox(model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 418 {
 419         int i;
 420         float segmentmins[3], segmentmaxs[3];
 421         frameblend_t frameblend[4];
 422         msurface_t *surface;
 423         static int maxvertices = 0;
 424         static float *vertex3f = NULL;
 425         memset(trace, 0, sizeof(*trace));
 426         trace->fraction = 1;
 427         trace->realfraction = 1;
 428         trace->hitsupercontentsmask = hitsupercontentsmask;
 429         memset(frameblend, 0, sizeof(frameblend));
 430         frameblend[0].frame = frame;
 431         frameblend[0].lerp = 1;
 432         if (maxvertices < model->surfmesh.num_vertices)
 433         {
 434                 if (vertex3f)
 435                         Z_Free(vertex3f);
 436                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 437                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 438         }
 439         if (VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
 440         {
 441                 // line trace
 442                 segmentmins[0] = min(start[0], end[0]) - 1;
 443                 segmentmins[1] = min(start[1], end[1]) - 1;
 444                 segmentmins[2] = min(start[2], end[2]) - 1;
 445                 segmentmaxs[0] = max(start[0], end[0]) + 1;
 446                 segmentmaxs[1] = max(start[1], end[1]) + 1;
 447                 segmentmaxs[2] = max(start[2], end[2]) + 1;
 448                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 449                 {
 450                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 451                         Collision_TraceLineTriangleMeshFloat(trace, start, end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 452                 }
 453         }
 454         else
 455         {
 456                 // box trace, performed as brush trace
 457                 colbrushf_t *thisbrush_start, *thisbrush_end;
 458                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
 459                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
 460                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
 461                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
 462                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
 463                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
 464                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
 465                 VectorAdd(start, boxmins, boxstartmins);
 466                 VectorAdd(start, boxmaxs, boxstartmaxs);
 467                 VectorAdd(end, boxmins, boxendmins);
 468                 VectorAdd(end, boxmaxs, boxendmaxs);
 469                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
 470                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
 471                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 472                 {
 473                         if (maxvertices < model->surfmesh.num_vertices)
 474                         {
 475                                 if (vertex3f)
 476                                         Z_Free(vertex3f);
 477                                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 478                                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 479                         }
 480                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 481                         Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 482                 }
 483         }
 484 }
 485
 486 static void Mod_ConvertAliasVerts (int inverts, trivertx_t *v, trivertx_t *out, int *vertremap)
 487 {
 488         int i, j;
 489         for (i = 0;i < inverts;i++)
 490         {
 491                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
 492                         continue;
 493                 j = vertremap[i]; // not onseam
 494                 if (j >= 0)
 495                         out[j] = v[i];
 496                 j = vertremap[i+inverts]; // onseam
 497                 if (j >= 0)
 498                         out[j] = v[i];
 499         }
 500 }
 501
 502 static void Mod_MDL_LoadFrames (unsigned char* datapointer, int inverts, int *vertremap)
 503 {
 504         int i, f, pose, groupframes;
 505         float interval;
 506         daliasframetype_t *pframetype;
 507         daliasframe_t *pinframe;
 508         daliasgroup_t *group;
 509         daliasinterval_t *intervals;
 510         animscene_t *scene;
 511         pose = 0;
 512         scene = loadmodel->animscenes;
 513         for (f = 0;f < loadmodel->numframes;f++)
 514         {
 515                 pframetype = (daliasframetype_t *)datapointer;
 516                 datapointer += sizeof(daliasframetype_t);
 517                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 518                 {
 519                         // a single frame is still treated as a group
 520                         interval = 0.1f;
 521                         groupframes = 1;
 522                 }
 523                 else
 524                 {
 525                         // read group header
 526                         group = (daliasgroup_t *)datapointer;
 527                         datapointer += sizeof(daliasgroup_t);
 528                         groupframes = LittleLong (group->numframes);
 529
 530                         // intervals (time per frame)
 531                         intervals = (daliasinterval_t *)datapointer;
 532                         datapointer += sizeof(daliasinterval_t) * groupframes;
 533
 534                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 535                         if (interval < 0.01f)
 536                         {
 537                                 Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 538                                 interval = 0.1f;
 539                         }
 540                 }
 541
 542                 // get scene name from first frame
 543                 pinframe = (daliasframe_t *)datapointer;
 544
 545                 strlcpy(scene->name, pinframe->name, sizeof(scene->name));
 546                 scene->firstframe = pose;
 547                 scene->framecount = groupframes;
 548                 scene->framerate = 1.0f / interval;
 549                 scene->loop = true;
 550                 scene++;
 551
 552                 // read frames
 553                 for (i = 0;i < groupframes;i++)
 554                 {
 555                         pinframe = (daliasframe_t *)datapointer;
 556                         datapointer += sizeof(daliasframe_t);
 557                         Mod_ConvertAliasVerts(inverts, (trivertx_t *)datapointer, loadmodel->surfmesh.data_morphmdlvertex + pose * loadmodel->surfmesh.num_vertices, vertremap);
 558                         datapointer += sizeof(trivertx_t) * inverts;
 559                         pose++;
 560                 }
 561         }
 562 }
 563
 564 static skinframe_t missingskinframe;
 565 static void Mod_BuildAliasSkinFromSkinFrame(texture_t *skin, skinframe_t *skinframe)
 566 {
 567         // hack
 568         if (skinframe == NULL)
 569         {
 570                 skinframe = &missingskinframe;
 571                 memset(skinframe, 0, sizeof(*skinframe));
 572                 skinframe->base = r_texture_notexture;
 573         }
 574
 575         skin->skin = *skinframe;
 576         skin->currentframe = skin;
 577         skin->basematerialflags = MATERIALFLAG_WALL;
 578         if (skin->skin.fog)
 579                 skin->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
 580         skin->currentmaterialflags = skin->basematerialflags;
 581 }
 582
 583 static void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, char *meshname, char *shadername)
 584 {
 585         int i;
 586         skinfileitem_t *skinfileitem;
 587         skinframe_t tempskinframe;
 588         if (skinfile)
 589         {
 590                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
 591                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
 592                 {
 593                         memset(skin, 0, sizeof(*skin));
 594                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
 595                         {
 596                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
 597                                 if (!strcmp(skinfileitem->name, meshname) && strcmp(skinfileitem->replacement, "common/nodraw") && strcmp(skinfileitem->replacement, "textures/common/nodraw"))
 598                                 {
 599                                         memset(&tempskinframe, 0, sizeof(tempskinframe));
 600                                         if (Mod_LoadSkinFrame(&tempskinframe, skinfileitem->replacement, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
 601                                                 Mod_BuildAliasSkinFromSkinFrame(skin, &tempskinframe);
 602                                         else
 603                                         {
 604                                                 if (cls.state != ca_dedicated)
 605                                                         Con_Printf("mesh \"%s\": failed to load skin #%i \"%s\", falling back to mesh's internal shader name \"%s\"\n", meshname, i, skinfileitem->replacement, shadername);
 606                                                 if (Mod_LoadSkinFrame(&tempskinframe, shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
 607                                                         Mod_BuildAliasSkinFromSkinFrame(skin, &tempskinframe);
 608                                                 else
 609                                                 {
 610                                                         if (cls.state != ca_dedicated)
 611                                                                 Con_Printf("failed to load skin \"%s\"\n", shadername);
 612                                                         Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
 613                                                 }
 614                                         }
 615                                 }
 616                         }
 617                 }
 618         }
 619         else
 620         {
 621                 memset(&tempskinframe, 0, sizeof(tempskinframe));
 622                 if (Mod_LoadSkinFrame(&tempskinframe, shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
 623                         Mod_BuildAliasSkinFromSkinFrame(skin, &tempskinframe);
 624                 else
 625                 {
 626                         if (cls.state != ca_dedicated)
 627                                 Con_Printf("Can't find texture \"%s\" for mesh \"%s\", using grey checkerboard\n", shadername, meshname);
 628                         Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
 629                 }
 630         }
 631 }
 632
 633 #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);
 634 #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);
 635 void Mod_IDP0_Load(model_t *mod, void *buffer, void *bufferend)
 636 {
 637         int i, j, version, totalskins, skinwidth, skinheight, groupframes, groupskins, numverts;
 638         float scales, scalet, interval;
 639         msurface_t *surface;
 640         unsigned char *data;
 641         mdl_t *pinmodel;
 642         stvert_t *pinstverts;
 643         dtriangle_t *pintriangles;
 644         daliasskintype_t *pinskintype;
 645         daliasskingroup_t *pinskingroup;
 646         daliasskininterval_t *pinskinintervals;
 647         daliasframetype_t *pinframetype;
 648         daliasgroup_t *pinframegroup;
 649         unsigned char *datapointer, *startframes, *startskins;
 650         char name[MAX_QPATH];
 651         skinframe_t tempskinframe;
 652         animscene_t *tempskinscenes;
 653         texture_t *tempaliasskins;
 654         float *vertst;
 655         int *vertonseam, *vertremap;
 656         skinfile_t *skinfiles;
 657
 658         datapointer = (unsigned char *)buffer;
 659         pinmodel = (mdl_t *)datapointer;
 660         datapointer += sizeof(mdl_t);
 661
 662         version = LittleLong (pinmodel->version);
 663         if (version != ALIAS_VERSION)
 664                 Host_Error ("%s has wrong version number (%i should be %i)",
 665                                  loadmodel->name, version, ALIAS_VERSION);
 666
 667         loadmodel->type = mod_alias;
 668         loadmodel->DrawSky = NULL;
 669         loadmodel->Draw = R_Q1BSP_Draw;
 670         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
 671         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
 672         loadmodel->DrawLight = R_Q1BSP_DrawLight;
 673         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
 674
 675         loadmodel->num_surfaces = 1;
 676         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
 677         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int));
 678         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
 679         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
 680         loadmodel->surfacelist[0] = 0;
 681
 682         loadmodel->numskins = LittleLong(pinmodel->numskins);
 683         BOUNDI(loadmodel->numskins,0,65536);
 684         skinwidth = LittleLong (pinmodel->skinwidth);
 685         BOUNDI(skinwidth,0,65536);
 686         skinheight = LittleLong (pinmodel->skinheight);
 687         BOUNDI(skinheight,0,65536);
 688         numverts = LittleLong(pinmodel->numverts);
 689         BOUNDI(numverts,0,65536);
 690         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->numtris);
 691         BOUNDI(loadmodel->surfmesh.num_triangles,0,65536);
 692         loadmodel->numframes = LittleLong(pinmodel->numframes);
 693         BOUNDI(loadmodel->numframes,0,65536);
 694         loadmodel->synctype = (synctype_t)LittleLong (pinmodel->synctype);
 695         BOUNDI(loadmodel->synctype,0,2);
 696         loadmodel->flags = LittleLong (pinmodel->flags);
 697
 698         for (i = 0;i < 3;i++)
 699         {
 700                 loadmodel->surfmesh.num_morphmdlframescale[i] = LittleFloat (pinmodel->scale[i]);
 701                 loadmodel->surfmesh.num_morphmdlframetranslate[i] = LittleFloat (pinmodel->scale_origin[i]);
 702         }
 703
 704         startskins = datapointer;
 705         totalskins = 0;
 706         for (i = 0;i < loadmodel->numskins;i++)
 707         {
 708                 pinskintype = (daliasskintype_t *)datapointer;
 709                 datapointer += sizeof(daliasskintype_t);
 710                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 711                         groupskins = 1;
 712                 else
 713                 {
 714                         pinskingroup = (daliasskingroup_t *)datapointer;
 715                         datapointer += sizeof(daliasskingroup_t);
 716                         groupskins = LittleLong(pinskingroup->numskins);
 717                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 718                 }
 719
 720                 for (j = 0;j < groupskins;j++)
 721                 {
 722                         datapointer += skinwidth * skinheight;
 723                         totalskins++;
 724                 }
 725         }
 726
 727         pinstverts = (stvert_t *)datapointer;
 728         datapointer += sizeof(stvert_t) * numverts;
 729
 730         pintriangles = (dtriangle_t *)datapointer;
 731         datapointer += sizeof(dtriangle_t) * loadmodel->surfmesh.num_triangles;
 732
 733         startframes = datapointer;
 734         loadmodel->surfmesh.num_morphframes = 0;
 735         for (i = 0;i < loadmodel->numframes;i++)
 736         {
 737                 pinframetype = (daliasframetype_t *)datapointer;
 738                 datapointer += sizeof(daliasframetype_t);
 739                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 740                         groupframes = 1;
 741                 else
 742                 {
 743                         pinframegroup = (daliasgroup_t *)datapointer;
 744                         datapointer += sizeof(daliasgroup_t);
 745                         groupframes = LittleLong(pinframegroup->numframes);
 746                         datapointer += sizeof(daliasinterval_t) * groupframes;
 747                 }
 748
 749                 for (j = 0;j < groupframes;j++)
 750                 {
 751                         datapointer += sizeof(daliasframe_t);
 752                         datapointer += sizeof(trivertx_t) * numverts;
 753                         loadmodel->surfmesh.num_morphframes++;
 754                 }
 755         }
 756
 757         // store texture coordinates into temporary array, they will be stored
 758         // after usage is determined (triangle data)
 759         vertst = (float *)Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
 760         vertremap = (int *)Mem_Alloc(tempmempool, numverts * 3 * sizeof(int));
 761         vertonseam = vertremap + numverts * 2;
 762
 763         scales = 1.0 / skinwidth;
 764         scalet = 1.0 / skinheight;
 765         for (i = 0;i < numverts;i++)
 766         {
 767                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 768                 vertst[i*2+0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 769                 vertst[i*2+1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 770                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
 771                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
 772         }
 773
 774 // load triangle data
 775         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->surfmesh.num_triangles);
 776
 777         // read the triangle elements
 778         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 779                 for (j = 0;j < 3;j++)
 780                         loadmodel->surfmesh.data_element3i[i*3+j] = LittleLong(pintriangles[i].vertindex[j]);
 781         // validate (note numverts is used because this is the original data)
 782         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, numverts, __FILE__, __LINE__);
 783         // now butcher the elements according to vertonseam and tri->facesfront
 784         // and then compact the vertex set to remove duplicates
 785         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 786                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 787                         for (j = 0;j < 3;j++)
 788                                 if (vertonseam[loadmodel->surfmesh.data_element3i[i*3+j]])
 789                                         loadmodel->surfmesh.data_element3i[i*3+j] += numverts;
 790         // count the usage
 791         // (this uses vertremap to count usage to save some memory)
 792         for (i = 0;i < numverts*2;i++)
 793                 vertremap[i] = 0;
 794         for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
 795                 vertremap[loadmodel->surfmesh.data_element3i[i]]++;
 796         // build remapping table and compact array
 797         loadmodel->surfmesh.num_vertices = 0;
 798         for (i = 0;i < numverts*2;i++)
 799         {
 800                 if (vertremap[i])
 801                 {
 802                         vertremap[i] = loadmodel->surfmesh.num_vertices;
 803                         vertst[loadmodel->surfmesh.num_vertices*2+0] = vertst[i*2+0];
 804                         vertst[loadmodel->surfmesh.num_vertices*2+1] = vertst[i*2+1];
 805                         loadmodel->surfmesh.num_vertices++;
 806                 }
 807                 else
 808                         vertremap[i] = -1; // not used at all
 809         }
 810         // remap the elements to the new vertex set
 811         for (i = 0;i < loadmodel->surfmesh.num_triangles * 3;i++)
 812                 loadmodel->surfmesh.data_element3i[i] = vertremap[loadmodel->surfmesh.data_element3i[i]];
 813         // store the texture coordinates
 814         loadmodel->surfmesh.data_texcoordtexture2f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * loadmodel->surfmesh.num_vertices);
 815         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
 816         {
 817                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = vertst[i*2+0];
 818                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = vertst[i*2+1];
 819         }
 820
 821 // load the frames
 822         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 823         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
 824         loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
 825         Mod_MDL_LoadFrames (startframes, numverts, vertremap);
 826         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
 827         Mod_Alias_CalculateBoundingBox();
 828         Mod_Alias_Mesh_CompileFrameZero();
 829
 830         Mem_Free(vertst);
 831         Mem_Free(vertremap);
 832
 833         // load the skins
 834         skinfiles = Mod_LoadSkinFiles();
 835         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 836         loadmodel->num_textures = loadmodel->num_surfaces;
 837         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
 838         if (skinfiles)
 839         {
 840                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
 841                 Mod_FreeSkinFiles(skinfiles);
 842                 for (i = 0;i < loadmodel->numskins;i++)
 843                 {
 844                         loadmodel->skinscenes[i].firstframe = i;
 845                         loadmodel->skinscenes[i].framecount = 1;
 846                         loadmodel->skinscenes[i].loop = true;
 847                         loadmodel->skinscenes[i].framerate = 10;
 848                 }
 849         }
 850         else
 851         {
 852                 totalskins = 0;
 853                 datapointer = startskins;
 854                 for (i = 0;i < loadmodel->numskins;i++)
 855                 {
 856                         pinskintype = (daliasskintype_t *)datapointer;
 857                         datapointer += sizeof(daliasskintype_t);
 858
 859                         if (pinskintype->type == ALIAS_SKIN_SINGLE)
 860                         {
 861                                 groupskins = 1;
 862                                 interval = 0.1f;
 863                         }
 864                         else
 865                         {
 866                                 pinskingroup = (daliasskingroup_t *)datapointer;
 867                                 datapointer += sizeof(daliasskingroup_t);
 868
 869                                 groupskins = LittleLong (pinskingroup->numskins);
 870
 871                                 pinskinintervals = (daliasskininterval_t *)datapointer;
 872                                 datapointer += sizeof(daliasskininterval_t) * groupskins;
 873
 874                                 interval = LittleFloat(pinskinintervals[0].interval);
 875                                 if (interval < 0.01f)
 876                                 {
 877                                         Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 878                                         interval = 0.1f;
 879                                 }
 880                         }
 881
 882                         sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 883                         loadmodel->skinscenes[i].firstframe = totalskins;
 884                         loadmodel->skinscenes[i].framecount = groupskins;
 885                         loadmodel->skinscenes[i].framerate = 1.0f / interval;
 886                         loadmodel->skinscenes[i].loop = true;
 887
 888                         for (j = 0;j < groupskins;j++)
 889                         {
 890                                 if (groupskins > 1)
 891                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 892                                 else
 893                                         sprintf (name, "%s_%i", loadmodel->name, i);
 894                                 if (!Mod_LoadSkinFrame(&tempskinframe, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP, true, true))
 895                                         Mod_LoadSkinFrame_Internal(&tempskinframe, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_PICMIP, true, r_fullbrights.integer, (unsigned char *)datapointer, skinwidth, skinheight, 8, NULL, NULL);
 896                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, &tempskinframe);
 897                                 datapointer += skinwidth * skinheight;
 898                                 totalskins++;
 899                         }
 900                 }
 901                 // check for skins that don't exist in the model, but do exist as external images
 902                 // (this was added because yummyluv kept pestering me about support for it)
 903                 while (Mod_LoadSkinFrame(&tempskinframe, va("%s_%i", loadmodel->name, loadmodel->numskins), (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP, true, true))
 904                 {
 905                         // expand the arrays to make room
 906                         tempskinscenes = loadmodel->skinscenes;
 907                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 908                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 909                         Mem_Free(tempskinscenes);
 910
 911                         tempaliasskins = loadmodel->data_textures;
 912                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
 913                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
 914                         Mem_Free(tempaliasskins);
 915
 916                         // store the info about the new skin
 917                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, &tempskinframe);
 918                         strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
 919                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 920                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 921                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 922                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 923
 924                         //increase skin counts
 925                         loadmodel->numskins++;
 926                         totalskins++;
 927                 }
 928         }
 929
 930         surface = loadmodel->data_surfaces;
 931         surface->texture = loadmodel->data_textures;
 932         surface->num_firsttriangle = 0;
 933         surface->num_triangles = loadmodel->surfmesh.num_triangles;
 934         surface->num_firstvertex = 0;
 935         surface->num_vertices = loadmodel->surfmesh.num_vertices;
 936
 937         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
 938 }
 939
 940 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
 941 {
 942         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
 943         float iskinwidth, iskinheight;
 944         unsigned char *data;
 945         msurface_t *surface;
 946         md2_t *pinmodel;
 947         unsigned char *base, *datapointer;
 948         md2frame_t *pinframe;
 949         char *inskin;
 950         md2triangle_t *intri;
 951         unsigned short *inst;
 952         struct md2verthash_s
 953         {
 954                 struct md2verthash_s *next;
 955                 unsigned short xyz;
 956                 unsigned short st;
 957         }
 958         *hash, **md2verthash, *md2verthashdata;
 959         skinframe_t tempskinframe;
 960         skinfile_t *skinfiles;
 961
 962         pinmodel = (md2_t *)buffer;
 963         base = (unsigned char *)buffer;
 964
 965         version = LittleLong (pinmodel->version);
 966         if (version != MD2ALIAS_VERSION)
 967                 Host_Error ("%s has wrong version number (%i should be %i)",
 968                         loadmodel->name, version, MD2ALIAS_VERSION);
 969
 970         loadmodel->type = mod_alias;
 971         loadmodel->DrawSky = NULL;
 972         loadmodel->Draw = R_Q1BSP_Draw;
 973         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
 974         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
 975         loadmodel->DrawLight = R_Q1BSP_DrawLight;
 976         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
 977
 978         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
 979                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 980         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
 981                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 982         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
 983                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 984         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
 985                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 986
 987         end = LittleLong(pinmodel->ofs_end);
 988         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
 989                 Host_Error ("%s is not a valid model", loadmodel->name);
 990         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
 991                 Host_Error ("%s is not a valid model", loadmodel->name);
 992         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
 993                 Host_Error ("%s is not a valid model", loadmodel->name);
 994         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
 995                 Host_Error ("%s is not a valid model", loadmodel->name);
 996         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
 997                 Host_Error ("%s is not a valid model", loadmodel->name);
 998
 999         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1000         numxyz = LittleLong(pinmodel->num_xyz);
1001         numst = LittleLong(pinmodel->num_st);
1002         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1003         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1004         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1005         skinwidth = LittleLong(pinmodel->skinwidth);
1006         skinheight = LittleLong(pinmodel->skinheight);
1007         iskinwidth = 1.0f / skinwidth;
1008         iskinheight = 1.0f / skinheight;
1009
1010         loadmodel->num_surfaces = 1;
1011         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1012         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]));
1013         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1014         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1015         loadmodel->surfacelist[0] = 0;
1016         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1017         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1018         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1019         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1020
1021         loadmodel->flags = 0; // there are no MD2 flags
1022         loadmodel->synctype = ST_RAND;
1023
1024         // load the skins
1025         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1026         skinfiles = Mod_LoadSkinFiles();
1027         if (skinfiles)
1028         {
1029                 loadmodel->num_textures = loadmodel->num_surfaces;
1030                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1031                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1032                 Mod_FreeSkinFiles(skinfiles);
1033         }
1034         else if (loadmodel->numskins)
1035         {
1036                 // skins found (most likely not a player model)
1037                 loadmodel->num_textures = loadmodel->num_surfaces;
1038                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1039                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1040                 {
1041                         if (Mod_LoadSkinFrame(&tempskinframe, inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
1042                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, &tempskinframe);
1043                         else
1044                         {
1045                                 Con_Printf("%s is missing skin \"%s\"\n", loadmodel->name, inskin);
1046                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, NULL);
1047                         }
1048                 }
1049         }
1050         else
1051         {
1052                 // no skins (most likely a player model)
1053                 loadmodel->numskins = 1;
1054                 loadmodel->num_textures = loadmodel->num_surfaces;
1055                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1056                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
1057         }
1058
1059         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1060         for (i = 0;i < loadmodel->numskins;i++)
1061         {
1062                 loadmodel->skinscenes[i].firstframe = i;
1063                 loadmodel->skinscenes[i].framecount = 1;
1064                 loadmodel->skinscenes[i].loop = true;
1065                 loadmodel->skinscenes[i].framerate = 10;
1066         }
1067
1068         // load the triangles and stvert data
1069         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1070         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1071         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1072         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1073         // swap the triangle list
1074         loadmodel->surfmesh.num_vertices = 0;
1075         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1076         {
1077                 for (j = 0;j < 3;j++)
1078                 {
1079                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1080                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1081                         if (xyz >= numxyz)
1082                         {
1083                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1084                                 xyz = 0;
1085                         }
1086                         if (st >= numst)
1087                         {
1088                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1089                                 st = 0;
1090                         }
1091                         hashindex = (xyz * 256 + st) & 65535;
1092                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1093                                 if (hash->xyz == xyz && hash->st == st)
1094                                         break;
1095                         if (hash == NULL)
1096                         {
1097                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1098                                 hash->xyz = xyz;
1099                                 hash->st = st;
1100                                 hash->next = md2verthash[hashindex];
1101                                 md2verthash[hashindex] = hash;
1102                         }
1103                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1104                 }
1105         }
1106
1107         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1108         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));
1109         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1110         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1111         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1112         {
1113                 int sts, stt;
1114                 hash = md2verthashdata + i;
1115                 vertremap[i] = hash->xyz;
1116                 sts = LittleShort(inst[hash->st*2+0]);
1117                 stt = LittleShort(inst[hash->st*2+1]);
1118                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1119                 {
1120                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1121                         sts = 0;
1122                         stt = 0;
1123                 }
1124                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1125                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1126         }
1127
1128         Mem_Free(md2verthash);
1129         Mem_Free(md2verthashdata);
1130
1131         // load the frames
1132         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1133         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1134         {
1135                 int k;
1136                 trivertx_t *v;
1137                 trivertx_t *out;
1138                 pinframe = (md2frame_t *)datapointer;
1139                 datapointer += sizeof(md2frame_t);
1140                 // store the frame scale/translate into the appropriate array
1141                 for (j = 0;j < 3;j++)
1142                 {
1143                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1144                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1145                 }
1146                 // convert the vertices
1147                 v = (trivertx_t *)datapointer;
1148                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1149                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1150                         out[k] = v[vertremap[k]];
1151                 datapointer += numxyz * sizeof(trivertx_t);
1152
1153                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1154                 loadmodel->animscenes[i].firstframe = i;
1155                 loadmodel->animscenes[i].framecount = 1;
1156                 loadmodel->animscenes[i].framerate = 10;
1157                 loadmodel->animscenes[i].loop = true;
1158         }
1159
1160         Mem_Free(vertremap);
1161
1162         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1163         Mod_Alias_CalculateBoundingBox();
1164         Mod_Alias_Mesh_CompileFrameZero();
1165
1166         surface = loadmodel->data_surfaces;
1167         surface->texture = loadmodel->data_textures;
1168         surface->num_firsttriangle = 0;
1169         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1170         surface->num_firstvertex = 0;
1171         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1172
1173         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1174 }
1175
1176 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1177 {
1178         int i, j, k, version, meshvertices, meshtriangles;
1179         unsigned char *data;
1180         msurface_t *surface;
1181         md3modelheader_t *pinmodel;
1182         md3frameinfo_t *pinframe;
1183         md3mesh_t *pinmesh;
1184         md3tag_t *pintag;
1185         skinfile_t *skinfiles;
1186
1187         pinmodel = (md3modelheader_t *)buffer;
1188
1189         if (memcmp(pinmodel->identifier, "IDP3", 4))
1190                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1191         version = LittleLong (pinmodel->version);
1192         if (version != MD3VERSION)
1193                 Host_Error ("%s has wrong version number (%i should be %i)",
1194                         loadmodel->name, version, MD3VERSION);
1195
1196         skinfiles = Mod_LoadSkinFiles();
1197         if (loadmodel->numskins < 1)
1198                 loadmodel->numskins = 1;
1199
1200         loadmodel->type = mod_alias;
1201         loadmodel->DrawSky = NULL;
1202         loadmodel->Draw = R_Q1BSP_Draw;
1203         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1204         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1205         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1206         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1207         loadmodel->flags = LittleLong(pinmodel->flags);
1208         loadmodel->synctype = ST_RAND;
1209
1210         // set up some global info about the model
1211         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1212         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1213
1214         // make skinscenes for the skins (no groups)
1215         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1216         for (i = 0;i < loadmodel->numskins;i++)
1217         {
1218                 loadmodel->skinscenes[i].firstframe = i;
1219                 loadmodel->skinscenes[i].framecount = 1;
1220                 loadmodel->skinscenes[i].loop = true;
1221                 loadmodel->skinscenes[i].framerate = 10;
1222         }
1223
1224         // load frameinfo
1225         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1226         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1227         {
1228                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1229                 loadmodel->animscenes[i].firstframe = i;
1230                 loadmodel->animscenes[i].framecount = 1;
1231                 loadmodel->animscenes[i].framerate = 10;
1232                 loadmodel->animscenes[i].loop = true;
1233         }
1234
1235         // load tags
1236         loadmodel->num_tagframes = loadmodel->numframes;
1237         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1238         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1239         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1240         {
1241                 strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1242                 for (j = 0;j < 9;j++)
1243                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1244                 for (j = 0;j < 3;j++)
1245                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1246                 //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);
1247         }
1248
1249         // load meshes
1250         meshvertices = 0;
1251         meshtriangles = 0;
1252         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)))
1253         {
1254                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1255                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1256                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1257                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1258                 meshvertices += LittleLong(pinmesh->num_vertices);
1259                 meshtriangles += LittleLong(pinmesh->num_triangles);
1260         }
1261
1262         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1263         loadmodel->num_textures = loadmodel->num_surfaces;
1264         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * sizeof(float[2]) + meshvertices * loadmodel->numframes * sizeof(md3vertex_t));
1265         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1266         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1267         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1268         loadmodel->surfmesh.num_vertices = meshvertices;
1269         loadmodel->surfmesh.num_triangles = meshtriangles;
1270         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1271         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1272         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1273         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1274         loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
1275
1276         meshvertices = 0;
1277         meshtriangles = 0;
1278         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)))
1279         {
1280                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1281                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1282                 loadmodel->surfacelist[i] = i;
1283                 surface = loadmodel->data_surfaces + i;
1284                 surface->texture = loadmodel->data_textures + i;
1285                 surface->num_firsttriangle = meshtriangles;
1286                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1287                 surface->num_firstvertex = meshvertices;
1288                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1289                 meshvertices += surface->num_vertices;
1290                 meshtriangles += surface->num_triangles;
1291
1292                 for (j = 0;j < surface->num_triangles * 3;j++)
1293                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1294                 for (j = 0;j < surface->num_vertices;j++)
1295                 {
1296                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1297                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1298                 }
1299                 for (j = 0;j < loadmodel->numframes;j++)
1300                 {
1301                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1302                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1303                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1304                         {
1305                                 out->origin[0] = LittleShort(in->origin[0]);
1306                                 out->origin[1] = LittleShort(in->origin[1]);
1307                                 out->origin[2] = LittleShort(in->origin[2]);
1308                                 out->pitch = in->pitch;
1309                                 out->yaw = in->yaw;
1310                         }
1311                 }
1312
1313                 if (LittleLong(pinmesh->num_shaders) >= 1)
1314                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name);
1315                 else
1316                         for (j = 0;j < loadmodel->numskins;j++)
1317                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1318
1319                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1320         }
1321         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1322         Mod_Alias_Mesh_CompileFrameZero();
1323         Mod_Alias_CalculateBoundingBox();
1324         Mod_FreeSkinFiles(skinfiles);
1325
1326         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1327 }
1328
1329 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1330 {
1331         zymtype1header_t *pinmodel, *pheader;
1332         unsigned char *pbase;
1333         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1334         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose;
1335         zymvertex_t *verts, *vertdata;
1336         zymscene_t *scene;
1337         zymbone_t *bone;
1338         char *shadername;
1339         skinfile_t *skinfiles;
1340         unsigned char *data;
1341         msurface_t *surface;
1342
1343         pinmodel = (zymtype1header_t *)buffer;
1344         pbase = (unsigned char *)buffer;
1345         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1346                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model");
1347         if (BigLong(pinmodel->type) != 1)
1348                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1349
1350         loadmodel->type = mod_alias;
1351         loadmodel->flags = 0; // there are no flags on zym models
1352         loadmodel->synctype = ST_RAND;
1353
1354         // byteswap header
1355         pheader = pinmodel;
1356         pheader->type = BigLong(pinmodel->type);
1357         pheader->filesize = BigLong(pinmodel->filesize);
1358         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1359         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1360         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1361         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1362         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1363         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1364         pheader->radius = BigFloat(pinmodel->radius);
1365         pheader->numverts = BigLong(pinmodel->numverts);
1366         pheader->numtris = BigLong(pinmodel->numtris);
1367         pheader->numshaders = BigLong(pinmodel->numshaders);
1368         pheader->numbones = BigLong(pinmodel->numbones);
1369         pheader->numscenes = BigLong(pinmodel->numscenes);
1370         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1371         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1372         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1373         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1374         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1375         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1376         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1377         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1378         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1379         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1380         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1381         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1382         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1383         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1384         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1385         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1386         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1387         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1388
1389         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1390         {
1391                 Con_Printf("%s has no geometry\n");
1392                 return;
1393         }
1394         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1395         {
1396                 Con_Printf("%s has no animations\n");
1397                 return;
1398         }
1399
1400         loadmodel->DrawSky = NULL;
1401         loadmodel->Draw = R_Q1BSP_Draw;
1402         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1403         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1404         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1405         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1406
1407         loadmodel->numframes = pheader->numscenes;
1408         loadmodel->num_surfaces = pheader->numshaders;
1409
1410         skinfiles = Mod_LoadSkinFiles();
1411         if (loadmodel->numskins < 1)
1412                 loadmodel->numskins = 1;
1413
1414         // make skinscenes for the skins (no groups)
1415         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1416         for (i = 0;i < loadmodel->numskins;i++)
1417         {
1418                 loadmodel->skinscenes[i].firstframe = i;
1419                 loadmodel->skinscenes[i].framecount = 1;
1420                 loadmodel->skinscenes[i].loop = true;
1421                 loadmodel->skinscenes[i].framerate = 10;
1422         }
1423
1424         // model bbox
1425         modelradius = pheader->radius;
1426         for (i = 0;i < 3;i++)
1427         {
1428                 loadmodel->normalmins[i] = pheader->mins[i];
1429                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1430                 loadmodel->rotatedmins[i] = -modelradius;
1431                 loadmodel->rotatedmaxs[i] = modelradius;
1432         }
1433         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1434         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1435         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1436         if (loadmodel->yawmaxs[0] > modelradius)
1437                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1438         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1439         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1440         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1441         loadmodel->radius = modelradius;
1442         loadmodel->radius2 = modelradius * modelradius;
1443
1444         // go through the lumps, swapping things
1445
1446         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1447         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1448         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1449         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1450         for (i = 0;i < pheader->numscenes;i++)
1451         {
1452                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1453                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1454                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1455                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1456                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1457                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1458                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1459                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1460                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1461                 if (loadmodel->animscenes[i].framerate < 0)
1462                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1463                 scene++;
1464         }
1465
1466         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1467         loadmodel->num_bones = pheader->numbones;
1468         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(aliasbone_t));
1469         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1470         for (i = 0;i < pheader->numbones;i++)
1471         {
1472                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1473                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1474                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1475                 if (loadmodel->data_bones[i].parent >= i)
1476                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1477         }
1478
1479         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1480         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1481         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1482         for (i = 0;i < pheader->numverts;i++)
1483         {
1484                 vertbonecounts[i] = BigLong(bonecount[i]);
1485                 if (vertbonecounts[i] != 1)
1486                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1487         }
1488
1489         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]);
1490
1491         meshvertices = pheader->numverts;
1492         meshtriangles = pheader->numtris;
1493
1494         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1495         loadmodel->num_textures = loadmodel->num_surfaces;
1496         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * sizeof(float[14]) + meshvertices * sizeof(int[4]) + meshvertices * sizeof(float[4]) + loadmodel->num_poses * sizeof(float[36]));
1497         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1498         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1499         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1500         loadmodel->surfmesh.num_vertices = meshvertices;
1501         loadmodel->surfmesh.num_triangles = meshtriangles;
1502         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1503         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1504         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1505         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1506         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1507         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1508         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1509         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1510         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1511         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1512         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1513         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1514
1515         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1516         poses = (float *) (pheader->lump_poses.start + pbase);
1517         for (i = 0;i < pheader->lump_poses.length / 4;i++)
1518                 loadmodel->data_poses[i] = BigFloat(poses[i]);
1519
1520         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1521         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1522         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
1523         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1524         // (converting from weight-blending skeletal animation to
1525         //  deformation-based skeletal animation)
1526         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1527         for (i = 0;i < loadmodel->num_bones;i++)
1528         {
1529                 const float *m = loadmodel->data_poses + i * 12;
1530                 if (loadmodel->data_bones[i].parent >= 0)
1531                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1532                 else
1533                         for (k = 0;k < 12;k++)
1534                                 bonepose[12*i+k] = m[k];
1535         }
1536         for (j = 0;j < pheader->numverts;j++)
1537         {
1538                 // this format really should have had a per vertexweight weight value...
1539                 // but since it does not, the weighting is completely ignored and
1540                 // only one weight is allowed per vertex
1541                 int boneindex = BigLong(vertdata[j].bonenum);
1542                 const float *m = bonepose + 12 * boneindex;
1543                 float relativeorigin[3];
1544                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
1545                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
1546                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
1547                 // transform the vertex bone weight into the base mesh
1548                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
1549                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
1550                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
1551                 // store the weight as the primary weight on this vertex
1552                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1553                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = 1;
1554         }
1555         Z_Free(bonepose);
1556         // normals and tangents are calculated after elements are loaded
1557
1558         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1559         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
1560         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
1561         for (i = 0;i < pheader->numverts;i++)
1562         {
1563                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1564                 // flip T coordinate for OpenGL
1565                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1566         }
1567
1568         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1569         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1570         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1571
1572         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1573         //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)
1574         // byteswap, validate, and swap winding order of tris
1575         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1576         if (pheader->lump_render.length != count)
1577                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
1578         renderlist = (int *) (pheader->lump_render.start + pbase);
1579         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
1580         meshtriangles = 0;
1581         for (i = 0;i < loadmodel->num_surfaces;i++)
1582         {
1583                 int firstvertex, lastvertex;
1584                 if (renderlist >= renderlistend)
1585                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1586                 count = BigLong(*renderlist);renderlist++;
1587                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
1588                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1589
1590                 loadmodel->surfacelist[i] = i;
1591                 surface = loadmodel->data_surfaces + i;
1592                 surface->texture = loadmodel->data_textures + i;
1593                 surface->num_firsttriangle = meshtriangles;
1594                 surface->num_triangles = count;
1595                 meshtriangles += surface->num_triangles;
1596
1597                 // load the elements
1598                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1599                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
1600                 {
1601                         outelements[j*3+2] = BigLong(renderlist[0]);
1602                         outelements[j*3+1] = BigLong(renderlist[1]);
1603                         outelements[j*3+0] = BigLong(renderlist[2]);
1604                 }
1605                 // validate the elements and find the used vertex range
1606                 firstvertex = meshvertices;
1607                 lastvertex = 0;
1608                 for (j = 0;j < surface->num_triangles * 3;j++)
1609                 {
1610                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
1611                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
1612                         firstvertex = min(firstvertex, outelements[j]);
1613                         lastvertex = max(lastvertex, outelements[j]);
1614                 }
1615                 surface->num_firstvertex = firstvertex;
1616                 surface->num_vertices = lastvertex + 1 - firstvertex;
1617
1618                 // since zym models do not have named sections, reuse their shader
1619                 // name as the section name
1620                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
1621                 if (shadername[0])
1622                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
1623                 else
1624                         for (j = 0;j < loadmodel->numskins;j++)
1625                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1626         }
1627         Mod_FreeSkinFiles(skinfiles);
1628         Mem_Free(vertbonecounts);
1629         Mem_Free(verts);
1630
1631         // compute all the mesh information that was not loaded from the file
1632         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
1633         Mod_BuildBaseBonePoses();
1634         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
1635         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
1636         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1637
1638         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1639 }
1640
1641 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1642 {
1643         dpmheader_t *pheader;
1644         dpmframe_t *frame;
1645         dpmbone_t *bone;
1646         dpmmesh_t *dpmmesh;
1647         unsigned char *pbase;
1648         int i, j, k, meshvertices, meshtriangles;
1649         skinfile_t *skinfiles;
1650         unsigned char *data;
1651         float *bonepose;
1652
1653         pheader = (dpmheader_t *)buffer;
1654         pbase = (unsigned char *)buffer;
1655         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
1656                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model");
1657         if (BigLong(pheader->type) != 2)
1658                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1659
1660         loadmodel->type = mod_alias;
1661         loadmodel->flags = 0; // there are no flags on zym models
1662         loadmodel->synctype = ST_RAND;
1663
1664         // byteswap header
1665         pheader->type = BigLong(pheader->type);
1666         pheader->filesize = BigLong(pheader->filesize);
1667         pheader->mins[0] = BigFloat(pheader->mins[0]);
1668         pheader->mins[1] = BigFloat(pheader->mins[1]);
1669         pheader->mins[2] = BigFloat(pheader->mins[2]);
1670         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
1671         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
1672         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
1673         pheader->yawradius = BigFloat(pheader->yawradius);
1674         pheader->allradius = BigFloat(pheader->allradius);
1675         pheader->num_bones = BigLong(pheader->num_bones);
1676         pheader->num_meshs = BigLong(pheader->num_meshs);
1677         pheader->num_frames = BigLong(pheader->num_frames);
1678         pheader->ofs_bones = BigLong(pheader->ofs_bones);
1679         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
1680         pheader->ofs_frames = BigLong(pheader->ofs_frames);
1681
1682         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
1683         {
1684                 Con_Printf("%s has no geometry\n");
1685                 return;
1686         }
1687         if (pheader->num_frames < 1)
1688         {
1689                 Con_Printf("%s has no frames\n");
1690                 return;
1691         }
1692
1693         loadmodel->DrawSky = NULL;
1694         loadmodel->Draw = R_Q1BSP_Draw;
1695         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1696         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1697         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1698         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1699
1700         // model bbox
1701         for (i = 0;i < 3;i++)
1702         {
1703                 loadmodel->normalmins[i] = pheader->mins[i];
1704                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1705                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
1706                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
1707                 loadmodel->rotatedmins[i] = -pheader->allradius;
1708                 loadmodel->rotatedmaxs[i] = pheader->allradius;
1709         }
1710         loadmodel->radius = pheader->allradius;
1711         loadmodel->radius2 = pheader->allradius * pheader->allradius;
1712
1713         // load external .skin files if present
1714         skinfiles = Mod_LoadSkinFiles();
1715         if (loadmodel->numskins < 1)
1716                 loadmodel->numskins = 1;
1717
1718         meshvertices = 0;
1719         meshtriangles = 0;
1720
1721         // gather combined statistics from the meshes
1722         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1723         for (i = 0;i < (int)pheader->num_meshs;i++)
1724         {
1725                 int numverts = BigLong(dpmmesh->num_verts);
1726                 meshvertices += numverts;;
1727                 meshtriangles += BigLong(dpmmesh->num_tris);
1728                 dpmmesh++;
1729         }
1730
1731         loadmodel->numframes = pheader->num_frames;
1732         loadmodel->num_bones = pheader->num_bones;
1733         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
1734         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = pheader->num_meshs;
1735         // do most allocations as one merged chunk
1736         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(int[4]) + sizeof(float[4])) + loadmodel->num_poses * sizeof(float[36]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
1737         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1738         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1739         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1740         loadmodel->surfmesh.num_vertices = meshvertices;
1741         loadmodel->surfmesh.num_triangles = meshtriangles;
1742         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1743         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1744         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1745         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1746         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1747         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1748         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1749         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1750         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1751         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1752         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1753         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1754         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
1755         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
1756         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1757
1758         for (i = 0;i < loadmodel->numskins;i++)
1759         {
1760                 loadmodel->skinscenes[i].firstframe = i;
1761                 loadmodel->skinscenes[i].framecount = 1;
1762                 loadmodel->skinscenes[i].loop = true;
1763                 loadmodel->skinscenes[i].framerate = 10;
1764         }
1765
1766         // load the bone info
1767         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
1768         for (i = 0;i < loadmodel->num_bones;i++)
1769         {
1770                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1771                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1772                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1773                 if (loadmodel->data_bones[i].parent >= i)
1774                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1775         }
1776
1777         // load the frames
1778         frame = (dpmframe_t *) (pbase + pheader->ofs_frames);
1779         for (i = 0;i < loadmodel->numframes;i++)
1780         {
1781                 const float *poses;
1782                 memcpy(loadmodel->animscenes[i].name, frame->name, sizeof(frame->name));
1783                 loadmodel->animscenes[i].firstframe = i;
1784                 loadmodel->animscenes[i].framecount = 1;
1785                 loadmodel->animscenes[i].loop = true;
1786                 loadmodel->animscenes[i].framerate = 10;
1787                 // load the bone poses for this frame
1788                 poses = (float *) (pbase + BigLong(frame->ofs_bonepositions));
1789                 for (j = 0;j < loadmodel->num_bones*12;j++)
1790                         loadmodel->data_poses[i * loadmodel->num_bones*12 + j] = BigFloat(poses[j]);
1791                 // stuff not processed here: mins, maxs, yawradius, allradius
1792                 frame++;
1793         }
1794
1795         // load the meshes now
1796         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1797         meshvertices = 0;
1798         meshtriangles = 0;
1799         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1800         // (converting from weight-blending skeletal animation to
1801         //  deformation-based skeletal animation)
1802         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1803         for (i = 0;i < loadmodel->num_bones;i++)
1804         {
1805                 const float *m = loadmodel->data_poses + i * 12;
1806                 if (loadmodel->data_bones[i].parent >= 0)
1807                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1808                 else
1809                         for (k = 0;k < 12;k++)
1810                                 bonepose[12*i+k] = m[k];
1811         }
1812         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
1813         {
1814                 const int *inelements;
1815                 int *outelements;
1816                 const float *intexcoord;
1817                 msurface_t *surface;
1818
1819                 loadmodel->surfacelist[i] = i;
1820                 surface = loadmodel->data_surfaces + i;
1821                 surface->texture = loadmodel->data_textures + i;
1822                 surface->num_firsttriangle = meshtriangles;
1823                 surface->num_triangles = BigLong(dpmmesh->num_tris);
1824                 surface->num_firstvertex = meshvertices;
1825                 surface->num_vertices = BigLong(dpmmesh->num_verts);
1826                 meshvertices += surface->num_vertices;
1827                 meshtriangles += surface->num_triangles;
1828
1829                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
1830                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1831                 for (j = 0;j < surface->num_triangles;j++)
1832                 {
1833                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
1834                         outelements[0] = surface->num_firstvertex + BigLong(inelements[2]);
1835                         outelements[1] = surface->num_firstvertex + BigLong(inelements[1]);
1836                         outelements[2] = surface->num_firstvertex + BigLong(inelements[0]);
1837                         inelements += 3;
1838                         outelements += 3;
1839                 }
1840
1841                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
1842                 for (j = 0;j < surface->num_vertices*2;j++)
1843                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
1844
1845                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
1846                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
1847                 {
1848                         float sum;
1849                         int l;
1850                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
1851                         data += sizeof(dpmvertex_t);
1852                         for (k = 0;k < numweights;k++)
1853                         {
1854                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
1855                                 int boneindex = BigLong(vert->bonenum);
1856                                 const float *m = bonepose + 12 * boneindex;
1857                                 float influence = BigFloat(vert->influence);
1858                                 float relativeorigin[3], relativenormal[3];
1859                                 relativeorigin[0] = BigFloat(vert->origin[0]);
1860                                 relativeorigin[1] = BigFloat(vert->origin[1]);
1861                                 relativeorigin[2] = BigFloat(vert->origin[2]);
1862                                 relativenormal[0] = BigFloat(vert->normal[0]);
1863                                 relativenormal[1] = BigFloat(vert->normal[1]);
1864                                 relativenormal[2] = BigFloat(vert->normal[2]);
1865                                 // blend the vertex bone weights into the base mesh
1866                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
1867                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
1868                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
1869                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
1870                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
1871                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
1872                                 if (!k)
1873                                 {
1874                                         // store the first (and often only) weight
1875                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = influence;
1876                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1877                                 }
1878                                 else
1879                                 {
1880                                         // sort the new weight into this vertex's weight table
1881                                         // (which only accepts up to 4 bones per vertex)
1882                                         for (l = 0;l < 4;l++)
1883                                         {
1884                                                 if (loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] < influence)
1885                                                 {
1886                                                         // move weaker influence weights out of the way first
1887                                                         int l2;
1888                                                         for (l2 = 3;l2 > l;l2--)
1889                                                         {
1890                                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2-1];
1891                                                                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2-1];
1892                                                         }
1893                                                         // store the new weight
1894                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] = influence;
1895                                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+l] = boneindex;
1896                                                         break;
1897                                                 }
1898                                         }
1899                                 }
1900                                 data += sizeof(dpmbonevert_t);
1901                         }
1902                         sum = 0;
1903                         for (l = 0;l < 4;l++)
1904                                 sum += loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l];
1905                         if (sum && fabs(sum - 1) > (1.0f / 256.0f))
1906                         {
1907                                 float f = 1.0f / sum;
1908                                 for (l = 0;l < 4;l++)
1909                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] *= f;
1910                         }
1911                 }
1912
1913                 // since dpm models do not have named sections, reuse their shader name as the section name
1914                 if (dpmmesh->shadername[0])
1915                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
1916                 else
1917                         for (j = 0;j < loadmodel->numskins;j++)
1918                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1919
1920                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1921         }
1922         Z_Free(bonepose);
1923         Mod_FreeSkinFiles(skinfiles);
1924
1925         // compute all the mesh information that was not loaded from the file
1926         Mod_BuildBaseBonePoses();
1927         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
1928         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1929
1930         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1931 }
1932
1933 // no idea why PSK/PSA files contain weird quaternions but they do...
1934 #define PSKQUATNEGATIONS
1935 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1936 {
1937         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
1938         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
1939         fs_offset_t filesize;
1940         pskpnts_t *pnts;
1941         pskvtxw_t *vtxw;
1942         pskface_t *faces;
1943         pskmatt_t *matts;
1944         pskboneinfo_t *bones;
1945         pskrawweights_t *rawweights;
1946         pskboneinfo_t *animbones;
1947         pskaniminfo_t *anims;
1948         pskanimkeys_t *animkeys;
1949         void *animfilebuffer, *animbuffer, *animbufferend;
1950         unsigned char *data;
1951         pskchunk_t *pchunk;
1952         skinfile_t *skinfiles;
1953         char animname[MAX_QPATH];
1954
1955         pchunk = (pskchunk_t *)buffer;
1956         if (strcmp(pchunk->id, "ACTRHEAD"))
1957                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model");
1958
1959         loadmodel->type = mod_alias;
1960         loadmodel->DrawSky = NULL;
1961         loadmodel->Draw = R_Q1BSP_Draw;
1962         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1963         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1964         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1965         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1966         loadmodel->flags = 0; // there are no flags on zym models
1967         loadmodel->synctype = ST_RAND;
1968
1969         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
1970         strlcat(animname, ".psa", sizeof(animname));
1971         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
1972         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
1973         if (animbuffer == NULL)
1974                 Host_Error("%s: can't find .psa file (%s)", loadmodel->name, animname);
1975
1976         numpnts = 0;
1977         pnts = NULL;
1978         numvtxw = 0;
1979         vtxw = NULL;
1980         numfaces = 0;
1981         faces = NULL;
1982         nummatts = 0;
1983         matts = NULL;
1984         numbones = 0;
1985         bones = NULL;
1986         numrawweights = 0;
1987         rawweights = NULL;
1988         numanims = 0;
1989         anims = NULL;
1990         numanimkeys = 0;
1991         animkeys = NULL;
1992
1993         while (buffer < bufferend)
1994         {
1995                 pchunk = (pskchunk_t *)buffer;
1996                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
1997                 version = LittleLong(pchunk->version);
1998                 recordsize = LittleLong(pchunk->recordsize);
1999                 numrecords = LittleLong(pchunk->numrecords);
2000                 if (developer.integer >= 100)
2001                         Con_Printf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2002                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2003                         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);
2004                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2005                 {
2006                         // nothing to do
2007                 }
2008                 else if (!strcmp(pchunk->id, "PNTS0000"))
2009                 {
2010                         pskpnts_t *p;
2011                         if (recordsize != sizeof(*p))
2012                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2013                         // byteswap in place and keep the pointer
2014                         numpnts = numrecords;
2015                         pnts = (pskpnts_t *)buffer;
2016                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2017                         {
2018                                 p->origin[0] = LittleFloat(p->origin[0]);
2019                                 p->origin[1] = LittleFloat(p->origin[1]);
2020                                 p->origin[2] = LittleFloat(p->origin[2]);
2021                         }
2022                         buffer = p;
2023                 }
2024                 else if (!strcmp(pchunk->id, "VTXW0000"))
2025                 {
2026                         pskvtxw_t *p;
2027                         if (recordsize != sizeof(*p))
2028                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2029                         // byteswap in place and keep the pointer
2030                         numvtxw = numrecords;
2031                         vtxw = (pskvtxw_t *)buffer;
2032                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2033                         {
2034                                 p->pntsindex = LittleShort(p->pntsindex);
2035                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2036                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2037                                 if (p->pntsindex >= numpnts)
2038                                 {
2039                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2040                                         p->pntsindex = 0;
2041                                 }
2042                         }
2043                         buffer = p;
2044                 }
2045                 else if (!strcmp(pchunk->id, "FACE0000"))
2046                 {
2047                         pskface_t *p;
2048                         if (recordsize != sizeof(*p))
2049                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2050                         // byteswap in place and keep the pointer
2051                         numfaces = numrecords;
2052                         faces = (pskface_t *)buffer;
2053                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2054                         {
2055                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2056                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2057                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2058                                 p->group = LittleLong(p->group);
2059                                 if (p->vtxwindex[0] >= numvtxw)
2060                                 {
2061                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2062                                         p->vtxwindex[0] = 0;
2063                                 }
2064                                 if (p->vtxwindex[1] >= numvtxw)
2065                                 {
2066                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2067                                         p->vtxwindex[1] = 0;
2068                                 }
2069                                 if (p->vtxwindex[2] >= numvtxw)
2070                                 {
2071                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2072                                         p->vtxwindex[2] = 0;
2073                                 }
2074                         }
2075                         buffer = p;
2076                 }
2077                 else if (!strcmp(pchunk->id, "MATT0000"))
2078                 {
2079                         pskmatt_t *p;
2080                         if (recordsize != sizeof(*p))
2081                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2082                         // byteswap in place and keep the pointer
2083                         nummatts = numrecords;
2084                         matts = (pskmatt_t *)buffer;
2085                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2086                         {
2087                                 // nothing to do
2088                         }
2089                         buffer = p;
2090                 }
2091                 else if (!strcmp(pchunk->id, "REFSKELT"))
2092                 {
2093                         pskboneinfo_t *p;
2094                         if (recordsize != sizeof(*p))
2095                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2096                         // byteswap in place and keep the pointer
2097                         numbones = numrecords;
2098                         bones = (pskboneinfo_t *)buffer;
2099                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2100                         {
2101                                 p->numchildren = LittleLong(p->numchildren);
2102                                 p->parent = LittleLong(p->parent);
2103                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2104                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2105                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2106                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2107                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2108                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2109                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2110                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2111                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2112                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2113                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2114 #ifdef PSKQUATNEGATIONS
2115                                 if (index)
2116                                 {
2117                                         p->basepose.quat[0] *= -1;
2118                                         p->basepose.quat[1] *= -1;
2119                                         p->basepose.quat[2] *= -1;
2120                                 }
2121                                 else
2122                                 {
2123                                         p->basepose.quat[0] *=  1;
2124                                         p->basepose.quat[1] *= -1;
2125                                         p->basepose.quat[2] *=  1;
2126                                 }
2127 #endif
2128                                 if (p->parent < 0 || p->parent >= numbones)
2129                                 {
2130                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2131                                         p->parent = 0;
2132                                 }
2133                         }
2134                         buffer = p;
2135                 }
2136                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2137                 {
2138                         pskrawweights_t *p;
2139                         if (recordsize != sizeof(*p))
2140                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2141                         // byteswap in place and keep the pointer
2142                         numrawweights = numrecords;
2143                         rawweights = (pskrawweights_t *)buffer;
2144                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2145                         {
2146                                 p->weight = LittleFloat(p->weight);
2147                                 p->pntsindex = LittleLong(p->pntsindex);
2148                                 p->boneindex = LittleLong(p->boneindex);
2149                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2150                                 {
2151                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2152                                         p->pntsindex = 0;
2153                                 }
2154                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2155                                 {
2156                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2157                                         p->boneindex = 0;
2158                                 }
2159                         }
2160                         buffer = p;
2161                 }
2162         }
2163
2164         while (animbuffer < animbufferend)
2165         {
2166                 pchunk = (pskchunk_t *)animbuffer;
2167                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2168                 version = LittleLong(pchunk->version);
2169                 recordsize = LittleLong(pchunk->recordsize);
2170                 numrecords = LittleLong(pchunk->numrecords);
2171                 if (developer.integer >= 100)
2172                         Con_Printf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2173                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2174                         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);
2175                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2176                 {
2177                         // nothing to do
2178                 }
2179                 else if (!strcmp(pchunk->id, "BONENAMES"))
2180                 {
2181                         pskboneinfo_t *p;
2182                         if (recordsize != sizeof(*p))
2183                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2184                         // byteswap in place and keep the pointer
2185                         numanimbones = numrecords;
2186                         animbones = (pskboneinfo_t *)animbuffer;
2187                         // NOTE: supposedly psa does not need to match the psk model, the
2188                         // bones missing from the psa would simply use their base
2189                         // positions from the psk, but this is hard for me to implement
2190                         // and people can easily make animations that match.
2191                         if (numanimbones != numbones)
2192                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh");
2193                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2194                         {
2195                                 p->numchildren = LittleLong(p->numchildren);
2196                                 p->parent = LittleLong(p->parent);
2197                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2198                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2199                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2200                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2201                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2202                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2203                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2204                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2205                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2206                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2207                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2208 #ifdef PSKQUATNEGATIONS
2209                                 if (index)
2210                                 {
2211                                         p->basepose.quat[0] *= -1;
2212                                         p->basepose.quat[1] *= -1;
2213                                         p->basepose.quat[2] *= -1;
2214                                 }
2215                                 else
2216                                 {
2217                                         p->basepose.quat[0] *=  1;
2218                                         p->basepose.quat[1] *= -1;
2219                                         p->basepose.quat[2] *=  1;
2220                                 }
2221 #endif
2222                                 if (p->parent < 0 || p->parent >= numanimbones)
2223                                 {
2224                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2225                                         p->parent = 0;
2226                                 }
2227                                 // check that bones are the same as in the base
2228                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2229                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2230                         }
2231                         animbuffer = p;
2232                 }
2233                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2234                 {
2235                         pskaniminfo_t *p;
2236                         if (recordsize != sizeof(*p))
2237                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2238                         // byteswap in place and keep the pointer
2239                         numanims = numrecords;
2240                         anims = (pskaniminfo_t *)animbuffer;
2241                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2242                         {
2243                                 p->numbones = LittleLong(p->numbones);
2244                                 p->playtime = LittleFloat(p->playtime);
2245                                 p->fps = LittleFloat(p->fps);
2246                                 p->firstframe = LittleLong(p->firstframe);
2247                                 p->numframes = LittleLong(p->numframes);
2248                                 if (p->numbones != numbones)
2249                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2250                         }
2251                         animbuffer = p;
2252                 }
2253                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2254                 {
2255                         pskanimkeys_t *p;
2256                         if (recordsize != sizeof(*p))
2257                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2258                         numanimkeys = numrecords;
2259                         animkeys = (pskanimkeys_t *)animbuffer;
2260                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2261                         {
2262                                 p->origin[0] = LittleFloat(p->origin[0]);
2263                                 p->origin[1] = LittleFloat(p->origin[1]);
2264                                 p->origin[2] = LittleFloat(p->origin[2]);
2265                                 p->quat[0] = LittleFloat(p->quat[0]);
2266                                 p->quat[1] = LittleFloat(p->quat[1]);
2267                                 p->quat[2] = LittleFloat(p->quat[2]);
2268                                 p->quat[3] = LittleFloat(p->quat[3]);
2269                                 p->frametime = LittleFloat(p->frametime);
2270 #ifdef PSKQUATNEGATIONS
2271                                 if (index % numbones)
2272                                 {
2273                                         p->quat[0] *= -1;
2274                                         p->quat[1] *= -1;
2275                                         p->quat[2] *= -1;
2276                                 }
2277                                 else
2278                                 {
2279                                         p->quat[0] *=  1;
2280                                         p->quat[1] *= -1;
2281                                         p->quat[2] *=  1;
2282                                 }
2283 #endif
2284                         }
2285                         animbuffer = p;
2286                         // TODO: allocate bonepose stuff
2287                 }
2288                 else
2289                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2290         }
2291
2292         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights || !numanims || !anims || !numanimkeys || !animkeys)
2293                 Host_Error("%s: missing required chunks", loadmodel->name);
2294
2295         loadmodel->numframes = 0;
2296         for (index = 0;index < numanims;index++)
2297                 loadmodel->numframes += anims[index].numframes;
2298
2299         if (numanimkeys != numbones * loadmodel->numframes)
2300                 Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2301
2302         meshvertices = numvtxw;
2303         meshtriangles = numfaces;
2304
2305         // load external .skin files if present
2306         skinfiles = Mod_LoadSkinFiles();
2307         if (loadmodel->numskins < 1)
2308                 loadmodel->numskins = 1;
2309         loadmodel->num_bones = numbones;
2310         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
2311         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = nummatts;
2312         // do most allocations as one merged chunk
2313         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(int[4]) + sizeof(float[4])) + loadmodel->num_poses * sizeof(float[36]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
2314         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2315         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2316         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2317         loadmodel->surfmesh.num_vertices = meshvertices;
2318         loadmodel->surfmesh.num_triangles = meshtriangles;
2319         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2320         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2321         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
2322         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2323         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2324         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
2325         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
2326         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
2327         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
2328         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2329         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2330         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2331         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2332         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2333         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2334
2335         for (i = 0;i < loadmodel->numskins;i++)
2336         {
2337                 loadmodel->skinscenes[i].firstframe = i;
2338                 loadmodel->skinscenes[i].framecount = 1;
2339                 loadmodel->skinscenes[i].loop = true;
2340                 loadmodel->skinscenes[i].framerate = 10;
2341         }
2342
2343         // create surfaces
2344         for (index = 0, i = 0;index < nummatts;index++)
2345         {
2346                 // since psk models do not have named sections, reuse their shader name as the section name
2347                 if (matts[index].name[0])
2348                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2349                 else
2350                         for (j = 0;j < loadmodel->numskins;j++)
2351                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + index + j * loadmodel->num_surfaces, NULL);
2352                 loadmodel->surfacelist[index] = index;
2353                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2354                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2355                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2356         }
2357
2358         // copy over the vertex locations and texcoords
2359         for (index = 0;index < numvtxw;index++)
2360         {
2361                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2362                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2363                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2364                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2365                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2366         }
2367
2368         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2369         for (index = 0;index < numfaces;index++)
2370                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2371         for (index = 0, i = 0;index < nummatts;index++)
2372         {
2373                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2374                 i += loadmodel->data_surfaces[index].num_triangles;
2375                 loadmodel->data_surfaces[index].num_triangles = 0;
2376         }
2377         for (index = 0;index < numfaces;index++)
2378         {
2379                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2380                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2381                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2382                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2383         }
2384
2385         // copy over the bones
2386         for (index = 0;index < numbones;index++)
2387         {
2388                 strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2389                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
2390                 if (loadmodel->data_bones[index].parent >= index)
2391                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
2392         }
2393
2394         // sort the psk point weights into the vertex weight tables
2395         // (which only accept up to 4 bones per vertex)
2396         for (index = 0;index < numvtxw;index++)
2397         {
2398                 int l;
2399                 float sum;
2400                 for (j = 0;j < numrawweights;j++)
2401                 {
2402                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
2403                         {
2404                                 int boneindex = rawweights[j].boneindex;
2405                                 float influence = rawweights[j].weight;
2406                                 for (l = 0;l < 4;l++)
2407                                 {
2408                                         if (loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] < influence)
2409                                         {
2410                                                 // move lower influence weights out of the way first
2411                                                 int l2;
2412                                                 for (l2 = 3;l2 > l;l2--)
2413                                                 {
2414                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2-1];
2415                                                         loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2-1];
2416                                                 }
2417                                                 // store the new weight
2418                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] = influence;
2419                                                 loadmodel->surfmesh.data_vertexweightindex4i[index*4+l] = boneindex;
2420                                                 break;
2421                                         }
2422                                 }
2423                         }
2424                 }
2425                 sum = 0;
2426                 for (l = 0;l < 4;l++)
2427                         sum += loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l];
2428                 if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2429                 {
2430                         float f = 1.0f / sum;
2431                         for (l = 0;l < 4;l++)
2432                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] *= f;
2433                 }
2434         }
2435
2436         // set up the animscenes based on the anims
2437         for (index = 0, i = 0;index < numanims;index++)
2438         {
2439                 for (j = 0;j < anims[index].numframes;j++, i++)
2440                 {
2441                         dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
2442                         loadmodel->animscenes[i].firstframe = i;
2443                         loadmodel->animscenes[i].framecount = 1;
2444                         loadmodel->animscenes[i].loop = true;
2445                         loadmodel->animscenes[i].framerate = 10;
2446                 }
2447         }
2448
2449         // load the poses from the animkeys
2450         for (index = 0;index < numanimkeys;index++)
2451         {
2452                 pskanimkeys_t *k = animkeys + index;
2453                 matrix4x4_t matrix;
2454                 Matrix4x4_FromOriginQuat(&matrix, k->origin[0], k->origin[1], k->origin[2], k->quat[0], k->quat[1], k->quat[2], k->quat[3]);
2455                 Matrix4x4_ToArray12FloatD3D(&matrix, loadmodel->data_poses + index*12);
2456         }
2457         Mod_FreeSkinFiles(skinfiles);
2458         Mem_Free(animfilebuffer);
2459
2460         // compute all the mesh information that was not loaded from the file
2461         // TODO: honor smoothing groups somehow?
2462         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2463         Mod_BuildBaseBonePoses();
2464         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
2465         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2466         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2467         Mod_Alias_CalculateBoundingBox();
2468
2469         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2470 }
2471