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 #define MAX_BONES 256
  50         if (model->surfmesh.data_vertexweightindex4i)
  51         {
  52                 // vertex weighted skeletal
  53                 int i, k;
  54                 float boneposerelative[MAX_BONES][12];
  55                 // interpolate matrices and concatenate them to their parents
  56                 for (i = 0;i < model->num_bones;i++)
  57                 {
  58                         int blends;
  59                         float *matrix, m[12], bonepose[MAX_BONES][12];
  60                         for (k = 0;k < 12;k++)
  61                                 m[k] = 0;
  62                         for (blends = 0;blends < 4 && frameblend[blends].lerp > 0;blends++)
  63                         {
  64                                 matrix = model->data_poses + (frameblend[blends].frame * model->num_bones + i) * 12;
  65                                 for (k = 0;k < 12;k++)
  66                                         m[k] += matrix[k] * frameblend[blends].lerp;
  67                         }
  68                         if (i == r_skeletal_debugbone.integer)
  69                                 m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
  70                         m[3] *= r_skeletal_debugtranslatex.value;
  71                         m[7] *= r_skeletal_debugtranslatey.value;
  72                         m[11] *= r_skeletal_debugtranslatez.value;
  73                         if (model->data_bones[i].parent >= 0)
  74                                 R_ConcatTransforms(bonepose[model->data_bones[i].parent], m, bonepose[i]);
  75                         else
  76                                 for (k = 0;k < 12;k++)
  77                                         bonepose[i][k] = m[k];
  78                         // create a relative deformation matrix to describe displacement
  79                         // from the base mesh, which is used by the actual weighting
  80                         R_ConcatTransforms(bonepose[i], model->data_baseboneposeinverse + i * 12, boneposerelative[i]);
  81                 }
  82                 // blend the vertex bone weights
  83                 // special case for the extremely common wf[0] == 1 because it saves 3 multiplies per array when compared to the other case (w[0] is always 1 if only one bone controls this vertex, artists only use multiple bones for certain special cases)
  84                 // special case for the first bone because it avoids the need to memset the arrays before filling
  85                 {
  86                         const float *v = model->surfmesh.data_vertex3f;
  87                         const int *wi = model->surfmesh.data_vertexweightindex4i;
  88                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
  89                         memset(vertex3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
  90                         for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, wi += 4, wf += 4, vertex3f += 3)
  91                         {
  92                                 if (wf[0] == 1)
  93                                 {
  94                                         const float *m = boneposerelative[wi[0]];
  95                                         vertex3f[0] = (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
  96                                         vertex3f[1] = (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
  97                                         vertex3f[2] = (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
  98                                 }
  99                                 else
 100                                 {
 101                                         const float *m = boneposerelative[wi[0]];
 102                                         float f = wf[0];
 103                                         vertex3f[0] = f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
 104                                         vertex3f[1] = f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
 105                                         vertex3f[2] = f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
 106                                         for (k = 1;k < 4 && wf[k];k++)
 107                                         {
 108                                                 const float *m = boneposerelative[wi[k]];
 109                                                 float f = wf[k];
 110                                                 vertex3f[0] += f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
 111                                                 vertex3f[1] += f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
 112                                                 vertex3f[2] += f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
 113                                         }
 114                                 }
 115                         }
 116                 }
 117                 if (normal3f)
 118                 {
 119                         const float *n = model->surfmesh.data_normal3f;
 120                         const int *wi = model->surfmesh.data_vertexweightindex4i;
 121                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
 122                         memset(normal3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
 123                         for (i = 0;i < model->surfmesh.num_vertices;i++, n += 3, wi += 4, wf += 4, normal3f += 3)
 124                         {
 125                                 if (wf[0] == 1)
 126                                 {
 127                                         const float *m = boneposerelative[wi[0]];
 128                                         normal3f[0] = (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
 129                                         normal3f[1] = (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
 130                                         normal3f[2] = (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
 131                                 }
 132                                 else
 133                                 {
 134                                         const float *m = boneposerelative[wi[0]];
 135                                         float f = wf[0];
 136                                         normal3f[0] = f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
 137                                         normal3f[1] = f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
 138                                         normal3f[2] = f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
 139                                         for (k = 1;k < 4 && wf[k];k++)
 140                                         {
 141                                                 const float *m = boneposerelative[wi[k]];
 142                                                 float f = wf[k];
 143                                                 normal3f[0] += f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
 144                                                 normal3f[1] += f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
 145                                                 normal3f[2] += f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
 146                                         }
 147                                 }
 148                         }
 149                 }
 150                 if (svector3f)
 151                 {
 152                         const float *sv = model->surfmesh.data_svector3f;
 153                         const int *wi = model->surfmesh.data_vertexweightindex4i;
 154                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
 155                         memset(svector3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
 156                         for (i = 0;i < model->surfmesh.num_vertices;i++, sv += 3, wi += 4, wf += 4, svector3f += 3)
 157                         {
 158                                 if (wf[0] == 1)
 159                                 {
 160                                         const float *m = boneposerelative[wi[0]];
 161                                         svector3f[0] = (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
 162                                         svector3f[1] = (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
 163                                         svector3f[2] = (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
 164                                 }
 165                                 else
 166                                 {
 167                                         const float *m = boneposerelative[wi[0]];
 168                                         float f = wf[0];
 169                                         svector3f[0] = f * (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
 170                                         svector3f[1] = f * (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
 171                                         svector3f[2] = f * (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
 172                                         for (k = 1;k < 4 && wf[k];k++)
 173                                         {
 174                                                 const float *m = boneposerelative[wi[k]];
 175                                                 float f = wf[k];
 176                                                 svector3f[0] += f * (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
 177                                                 svector3f[1] += f * (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
 178                                                 svector3f[2] += f * (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
 179                                         }
 180                                 }
 181                         }
 182                 }
 183                 if (tvector3f)
 184                 {
 185                         const float *tv = model->surfmesh.data_tvector3f;
 186                         const int *wi = model->surfmesh.data_vertexweightindex4i;
 187                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
 188                         memset(tvector3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
 189                         for (i = 0;i < model->surfmesh.num_vertices;i++, tv += 3, wi += 4, wf += 4, tvector3f += 3)
 190                         {
 191                                 if (wf[0] == 1)
 192                                 {
 193                                         const float *m = boneposerelative[wi[0]];
 194                                         tvector3f[0] = (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
 195                                         tvector3f[1] = (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
 196                                         tvector3f[2] = (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
 197                                 }
 198                                 else
 199                                 {
 200                                         const float *m = boneposerelative[wi[0]];
 201                                         float f = wf[0];
 202                                         tvector3f[0] = f * (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
 203                                         tvector3f[1] = f * (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
 204                                         tvector3f[2] = f * (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
 205                                         for (k = 1;k < 4 && wf[k];k++)
 206                                         {
 207                                                 const float *m = boneposerelative[wi[k]];
 208                                                 float f = wf[k];
 209                                                 tvector3f[0] += f * (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
 210                                                 tvector3f[1] += f * (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
 211                                                 tvector3f[2] += f * (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
 212                                         }
 213                                 }
 214                         }
 215                 }
 216         }
 217         else if (model->surfmesh.data_morphmd3vertex)
 218         {
 219                 // vertex morph
 220                 int i, numblends, blendnum;
 221                 int numverts = model->surfmesh.num_vertices;
 222                 numblends = 0;
 223                 for (blendnum = 0;blendnum < 4;blendnum++)
 224                 {
 225                         //VectorMA(translate, model->surfmesh.num_morphmdlframetranslate, frameblend[blendnum].lerp, translate);
 226                         if (frameblend[blendnum].lerp > 0)
 227                                 numblends = blendnum + 1;
 228                 }
 229                 // special case for the first blend because it avoids some adds and the need to memset the arrays first
 230                 for (blendnum = 0;blendnum < numblends;blendnum++)
 231                 {
 232                         const md3vertex_t *verts = model->surfmesh.data_morphmd3vertex + numverts * frameblend[blendnum].frame;
 233                         float scale = frameblend[blendnum].lerp * (1.0f / 64.0f);
 234                         if (blendnum == 0)
 235                         {
 236                                 for (i = 0;i < numverts;i++)
 237                                 {
 238                                         vertex3f[i * 3 + 0] = verts[i].origin[0] * scale;
 239                                         vertex3f[i * 3 + 1] = verts[i].origin[1] * scale;
 240                                         vertex3f[i * 3 + 2] = verts[i].origin[2] * scale;
 241                                 }
 242                         }
 243                         else
 244                         {
 245                                 for (i = 0;i < numverts;i++)
 246                                 {
 247                                         vertex3f[i * 3 + 0] += verts[i].origin[0] * scale;
 248                                         vertex3f[i * 3 + 1] += verts[i].origin[1] * scale;
 249                                         vertex3f[i * 3 + 2] += verts[i].origin[2] * scale;
 250                                 }
 251                         }
 252                         // the yaw and pitch stored in md3 models are 8bit quantized angles
 253                         // (0-255), and as such a lookup table is very well suited to
 254                         // decoding them, and since cosine is equivilant to sine with an
 255                         // extra 45 degree rotation, this uses one lookup table for both
 256                         // sine and cosine with a +64 bias to get cosine.
 257                         if (normal3f)
 258                         {
 259                                 float lerp = frameblend[blendnum].lerp;
 260                                 if (blendnum == 0)
 261                                 {
 262                                         for (i = 0;i < numverts;i++)
 263                                         {
 264                                                 normal3f[i * 3 + 0] = mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
 265                                                 normal3f[i * 3 + 1] = mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
 266                                                 normal3f[i * 3 + 2] =                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
 267                                         }
 268                                 }
 269                                 else
 270                                 {
 271                                         for (i = 0;i < numverts;i++)
 272                                         {
 273                                                 normal3f[i * 3 + 0] += mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
 274                                                 normal3f[i * 3 + 1] += mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
 275                                                 normal3f[i * 3 + 2] +=                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
 276                                         }
 277                                 }
 278                         }
 279                 }
 280                 // md3 model vertices do not include tangents, so we have to generate them (extremely slow)
 281                 if (normal3f)
 282                         if (svector3f)
 283                                 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);
 284         }
 285         else if (model->surfmesh.data_morphmdlvertex)
 286         {
 287                 // vertex morph
 288                 int i, numblends, blendnum;
 289                 int numverts = model->surfmesh.num_vertices;
 290                 float translate[3];
 291                 VectorClear(translate);
 292                 numblends = 0;
 293                 // blend the frame translates to avoid redundantly doing so on each vertex
 294                 // (a bit of a brain twister but it works)
 295                 for (blendnum = 0;blendnum < 4;blendnum++)
 296                 {
 297                         if (model->surfmesh.data_morphmd2framesize6f)
 298                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6 + 3, translate);
 299                         else
 300                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.num_morphmdlframetranslate, translate);
 301                         if (frameblend[blendnum].lerp > 0)
 302                                 numblends = blendnum + 1;
 303                 }
 304                 // special case for the first blend because it avoids some adds and the need to memset the arrays first
 305                 for (blendnum = 0;blendnum < numblends;blendnum++)
 306                 {
 307                         const trivertx_t *verts = model->surfmesh.data_morphmdlvertex + numverts * frameblend[blendnum].frame;
 308                         float scale[3];
 309                         if (model->surfmesh.data_morphmd2framesize6f)
 310                                 VectorScale(model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6, frameblend[blendnum].lerp, scale);
 311                         else
 312                                 VectorScale(model->surfmesh.num_morphmdlframescale, frameblend[blendnum].lerp, scale);
 313                         if (blendnum == 0)
 314                         {
 315                                 for (i = 0;i < numverts;i++)
 316                                 {
 317                                         vertex3f[i * 3 + 0] = translate[0] + verts[i].v[0] * scale[0];
 318                                         vertex3f[i * 3 + 1] = translate[1] + verts[i].v[1] * scale[1];
 319                                         vertex3f[i * 3 + 2] = translate[2] + verts[i].v[2] * scale[2];
 320                                 }
 321                         }
 322                         else
 323                         {
 324                                 for (i = 0;i < numverts;i++)
 325                                 {
 326                                         vertex3f[i * 3 + 0] += verts[i].v[0] * scale[0];
 327                                         vertex3f[i * 3 + 1] += verts[i].v[1] * scale[1];
 328                                         vertex3f[i * 3 + 2] += verts[i].v[2] * scale[2];
 329                                 }
 330                         }
 331                         // the vertex normals in mdl models are an index into a table of
 332                         // 162 unique values, this very crude quantization reduces the
 333                         // vertex normal to only one byte, which saves a lot of space but
 334                         // also makes lighting pretty coarse
 335                         if (normal3f)
 336                         {
 337                                 float lerp = frameblend[blendnum].lerp;
 338                                 if (blendnum == 0)
 339                                 {
 340                                         for (i = 0;i < numverts;i++)
 341                                         {
 342                                                 const float *vn = m_bytenormals[verts[i].lightnormalindex];
 343                                                 VectorScale(vn, lerp, normal3f + i*3);
 344                                         }
 345                                 }
 346                                 else
 347                                 {
 348                                         for (i = 0;i < numverts;i++)
 349                                         {
 350                                                 const float *vn = m_bytenormals[verts[i].lightnormalindex];
 351                                                 VectorMA(normal3f + i*3, lerp, vn, normal3f + i*3);
 352                                         }
 353                                 }
 354                         }
 355                 }
 356                 if (normal3f)
 357                         if (svector3f)
 358                                 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);
 359         }
 360         else
 361                 Host_Error("model %s has no skeletal or vertex morph animation data", model->name);
 362 }
 363
 364 int Mod_Alias_GetTagMatrix(const model_t *model, int poseframe, int tagindex, matrix4x4_t *outmatrix)
 365 {
 366         const float *boneframe;
 367         float tempbonematrix[12], bonematrix[12];
 368         *outmatrix = identitymatrix;
 369         if (model->num_bones)
 370         {
 371                 if (tagindex < 0 || tagindex >= model->num_bones)
 372                         return 4;
 373                 if (poseframe >= model->num_poses)
 374                         return 6;
 375                 boneframe = model->data_poses + poseframe * model->num_bones * 12;
 376                 memcpy(bonematrix, boneframe + tagindex * 12, sizeof(float[12]));
 377                 while (model->data_bones[tagindex].parent >= 0)
 378                 {
 379                         memcpy(tempbonematrix, bonematrix, sizeof(float[12]));
 380                         R_ConcatTransforms(boneframe + model->data_bones[tagindex].parent * 12, tempbonematrix, bonematrix);
 381                         tagindex = model->data_bones[tagindex].parent;
 382                 }
 383                 Matrix4x4_FromArray12FloatD3D(outmatrix, bonematrix);
 384         }
 385         else if (model->num_tags)
 386         {
 387                 if (tagindex < 0 || tagindex >= model->num_tags)
 388                         return 4;
 389                 if (poseframe >= model->num_tagframes)
 390                         return 6;
 391                 Matrix4x4_FromArray12FloatGL(outmatrix, model->data_tags[poseframe * model->num_tags + tagindex].matrixgl);
 392         }
 393         return 0;
 394 }
 395
 396 int Mod_Alias_GetTagIndexForName(const model_t *model, unsigned int skin, const char *tagname)
 397 {
 398         int i;
 399         if (model->data_overridetagnamesforskin && skin < (unsigned int)model->numskins && model->data_overridetagnamesforskin[(unsigned int)skin].num_overridetagnames)
 400                 for (i = 0;i < model->data_overridetagnamesforskin[skin].num_overridetagnames;i++)
 401                         if (!strcasecmp(tagname, model->data_overridetagnamesforskin[skin].data_overridetagnames[i].name))
 402                                 return i + 1;
 403         if (model->num_bones)
 404                 for (i = 0;i < model->num_bones;i++)
 405                         if (!strcasecmp(tagname, model->data_bones[i].name))
 406                                 return i + 1;
 407         if (model->num_tags)
 408                 for (i = 0;i < model->num_tags;i++)
 409                         if (!strcasecmp(tagname, model->data_tags[i].name))
 410                                 return i + 1;
 411         return 0;
 412 }
 413
 414 static void Mod_BuildBaseBonePoses(void)
 415 {
 416         int i, k;
 417         double scale;
 418         float *in12f = loadmodel->data_poses;
 419         float *out12f = loadmodel->data_basebonepose;
 420         float *outinv12f = loadmodel->data_baseboneposeinverse;
 421         for (i = 0;i < loadmodel->num_bones;i++, in12f += 12, out12f += 12, outinv12f += 12)
 422         {
 423                 if (loadmodel->data_bones[i].parent >= 0)
 424                         R_ConcatTransforms(loadmodel->data_basebonepose + 12 * loadmodel->data_bones[i].parent, in12f, out12f);
 425                 else
 426                         for (k = 0;k < 12;k++)
 427                                 out12f[k] = in12f[k];
 428
 429                 // invert The Matrix
 430
 431                 // we only support uniform scaling, so assume the first row is enough
 432                 // (note the lack of sqrt here, because we're trying to undo the scaling,
 433                 // this means multiplying by the inverse scale twice - squaring it, which
 434                 // makes the sqrt a waste of time)
 435                 scale = 1.0 / (out12f[ 0] * out12f[ 0] + out12f[ 1] * out12f[ 1] + out12f[ 2] * out12f[ 2]);
 436
 437                 // invert the rotation by transposing and multiplying by the squared
 438                 // recipricol of the input matrix scale as described above
 439                 outinv12f[ 0] = (float)(out12f[ 0] * scale);
 440                 outinv12f[ 1] = (float)(out12f[ 4] * scale);
 441                 outinv12f[ 2] = (float)(out12f[ 8] * scale);
 442                 outinv12f[ 4] = (float)(out12f[ 1] * scale);
 443                 outinv12f[ 5] = (float)(out12f[ 5] * scale);
 444                 outinv12f[ 6] = (float)(out12f[ 9] * scale);
 445                 outinv12f[ 8] = (float)(out12f[ 2] * scale);
 446                 outinv12f[ 9] = (float)(out12f[ 6] * scale);
 447                 outinv12f[10] = (float)(out12f[10] * scale);
 448
 449                 // invert the translate
 450                 outinv12f[ 3] = -(out12f[ 3] * outinv12f[ 0] + out12f[ 7] * outinv12f[ 1] + out12f[11] * outinv12f[ 2]);
 451                 outinv12f[ 7] = -(out12f[ 3] * outinv12f[ 4] + out12f[ 7] * outinv12f[ 5] + out12f[11] * outinv12f[ 6]);
 452                 outinv12f[11] = -(out12f[ 3] * outinv12f[ 8] + out12f[ 7] * outinv12f[ 9] + out12f[11] * outinv12f[10]);
 453         }
 454 }
 455
 456 static void Mod_Alias_CalculateBoundingBox(void)
 457 {
 458         int i, j;
 459         int vnum;
 460         qboolean firstvertex = true;
 461         float dist, yawradius, radius;
 462         float *v;
 463         float *vertex3f;
 464         frameblend_t frameblend[4];
 465         memset(frameblend, 0, sizeof(frameblend));
 466         frameblend[0].lerp = 1;
 467         vertex3f = Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3]));
 468         VectorClear(loadmodel->normalmins);
 469         VectorClear(loadmodel->normalmaxs);
 470         yawradius = 0;
 471         radius = 0;
 472         for (i = 0;i < loadmodel->numframes;i++)
 473         {
 474                 for (j = 0, frameblend[0].frame = loadmodel->animscenes[i].firstframe;j < loadmodel->animscenes[i].framecount;j++, frameblend[0].frame++)
 475                 {
 476                         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, vertex3f, NULL, NULL, NULL);
 477                         for (vnum = 0, v = vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
 478                         {
 479                                 if (firstvertex)
 480                                 {
 481                                         firstvertex = false;
 482                                         VectorCopy(v, loadmodel->normalmins);
 483                                         VectorCopy(v, loadmodel->normalmaxs);
 484                                 }
 485                                 else
 486                                 {
 487                                         if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
 488                                         if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
 489                                         if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
 490                                         if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
 491                                         if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
 492                                         if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
 493                                 }
 494                                 dist = v[0] * v[0] + v[1] * v[1];
 495                                 if (yawradius < dist)
 496                                         yawradius = dist;
 497                                 dist += v[2] * v[2];
 498                                 if (radius < dist)
 499                                         radius = dist;
 500                         }
 501                 }
 502         }
 503         Mem_Free(vertex3f);
 504         radius = sqrt(radius);
 505         yawradius = sqrt(yawradius);
 506         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
 507         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
 508         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 509         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 510         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
 511         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
 512         loadmodel->radius = radius;
 513         loadmodel->radius2 = radius * radius;
 514 }
 515
 516 static void Mod_Alias_Mesh_CompileFrameZero(void)
 517 {
 518         frameblend_t frameblend[4] = {{0, 1}, {0, 0}, {0, 0}, {0, 0}};
 519         loadmodel->surfmesh.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3][4]));
 520         loadmodel->surfmesh.data_svector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 3;
 521         loadmodel->surfmesh.data_tvector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 6;
 522         loadmodel->surfmesh.data_normal3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 9;
 523         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f);
 524 }
 525
 526 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)
 527 {
 528         int i;
 529         float segmentmins[3], segmentmaxs[3];
 530         frameblend_t frameblend[4];
 531         msurface_t *surface;
 532         static int maxvertices = 0;
 533         static float *vertex3f = NULL;
 534         memset(trace, 0, sizeof(*trace));
 535         trace->fraction = 1;
 536         trace->realfraction = 1;
 537         trace->hitsupercontentsmask = hitsupercontentsmask;
 538         memset(frameblend, 0, sizeof(frameblend));
 539         frameblend[0].frame = frame;
 540         frameblend[0].lerp = 1;
 541         if (maxvertices < model->surfmesh.num_vertices)
 542         {
 543                 if (vertex3f)
 544                         Z_Free(vertex3f);
 545                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 546                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 547         }
 548         if (VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
 549         {
 550                 // line trace
 551                 segmentmins[0] = min(start[0], end[0]) - 1;
 552                 segmentmins[1] = min(start[1], end[1]) - 1;
 553                 segmentmins[2] = min(start[2], end[2]) - 1;
 554                 segmentmaxs[0] = max(start[0], end[0]) + 1;
 555                 segmentmaxs[1] = max(start[1], end[1]) + 1;
 556                 segmentmaxs[2] = max(start[2], end[2]) + 1;
 557                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 558                 {
 559                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 560                         Collision_TraceLineTriangleMeshFloat(trace, start, end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 561                 }
 562         }
 563         else
 564         {
 565                 // box trace, performed as brush trace
 566                 colbrushf_t *thisbrush_start, *thisbrush_end;
 567                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
 568                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
 569                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
 570                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
 571                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
 572                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
 573                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
 574                 VectorAdd(start, boxmins, boxstartmins);
 575                 VectorAdd(start, boxmaxs, boxstartmaxs);
 576                 VectorAdd(end, boxmins, boxendmins);
 577                 VectorAdd(end, boxmaxs, boxendmaxs);
 578                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
 579                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
 580                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 581                 {
 582                         if (maxvertices < model->surfmesh.num_vertices)
 583                         {
 584                                 if (vertex3f)
 585                                         Z_Free(vertex3f);
 586                                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 587                                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 588                         }
 589                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 590                         Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 591                 }
 592         }
 593 }
 594
 595 static void Mod_ConvertAliasVerts (int inverts, trivertx_t *v, trivertx_t *out, int *vertremap)
 596 {
 597         int i, j;
 598         for (i = 0;i < inverts;i++)
 599         {
 600                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
 601                         continue;
 602                 j = vertremap[i]; // not onseam
 603                 if (j >= 0)
 604                         out[j] = v[i];
 605                 j = vertremap[i+inverts]; // onseam
 606                 if (j >= 0)
 607                         out[j] = v[i];
 608         }
 609 }
 610
 611 static void Mod_MDL_LoadFrames (unsigned char* datapointer, int inverts, int *vertremap)
 612 {
 613         int i, f, pose, groupframes;
 614         float interval;
 615         daliasframetype_t *pframetype;
 616         daliasframe_t *pinframe;
 617         daliasgroup_t *group;
 618         daliasinterval_t *intervals;
 619         animscene_t *scene;
 620         pose = 0;
 621         scene = loadmodel->animscenes;
 622         for (f = 0;f < loadmodel->numframes;f++)
 623         {
 624                 pframetype = (daliasframetype_t *)datapointer;
 625                 datapointer += sizeof(daliasframetype_t);
 626                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 627                 {
 628                         // a single frame is still treated as a group
 629                         interval = 0.1f;
 630                         groupframes = 1;
 631                 }
 632                 else
 633                 {
 634                         // read group header
 635                         group = (daliasgroup_t *)datapointer;
 636                         datapointer += sizeof(daliasgroup_t);
 637                         groupframes = LittleLong (group->numframes);
 638
 639                         // intervals (time per frame)
 640                         intervals = (daliasinterval_t *)datapointer;
 641                         datapointer += sizeof(daliasinterval_t) * groupframes;
 642
 643                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 644                         if (interval < 0.01f)
 645                         {
 646                                 Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 647                                 interval = 0.1f;
 648                         }
 649                 }
 650
 651                 // get scene name from first frame
 652                 pinframe = (daliasframe_t *)datapointer;
 653
 654                 strlcpy(scene->name, pinframe->name, sizeof(scene->name));
 655                 scene->firstframe = pose;
 656                 scene->framecount = groupframes;
 657                 scene->framerate = 1.0f / interval;
 658                 scene->loop = true;
 659                 scene++;
 660
 661                 // read frames
 662                 for (i = 0;i < groupframes;i++)
 663                 {
 664                         pinframe = (daliasframe_t *)datapointer;
 665                         datapointer += sizeof(daliasframe_t);
 666                         Mod_ConvertAliasVerts(inverts, (trivertx_t *)datapointer, loadmodel->surfmesh.data_morphmdlvertex + pose * loadmodel->surfmesh.num_vertices, vertremap);
 667                         datapointer += sizeof(trivertx_t) * inverts;
 668                         pose++;
 669                 }
 670         }
 671 }
 672
 673 static void Mod_BuildAliasSkinFromSkinFrame(texture_t *texture, skinframe_t *skinframe)
 674 {
 675         texture->currentframe = texture;
 676         texture->numskinframes = 1;
 677         texture->skinframerate = 1;
 678         texture->currentskinframe = texture->skinframes + 0;
 679         if (skinframe)
 680                 texture->skinframes[0] = *skinframe;
 681         else
 682         {
 683                 // hack
 684                 memset(texture->skinframes, 0, sizeof(texture->skinframes));
 685                 texture->skinframes[0].base = r_texture_notexture;
 686         }
 687
 688         texture->basematerialflags = MATERIALFLAG_WALL;
 689         if (texture->currentskinframe->fog)
 690                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
 691         texture->currentmaterialflags = texture->basematerialflags;
 692 }
 693
 694 static void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, char *meshname, char *shadername)
 695 {
 696         int i;
 697         skinfileitem_t *skinfileitem;
 698         skinframe_t tempskinframe;
 699         if (skinfile)
 700         {
 701                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
 702                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
 703                 {
 704                         memset(skin, 0, sizeof(*skin));
 705                         Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
 706                         // don't render unmentioned meshes
 707                         skin->basematerialflags = skin->currentmaterialflags = 0;
 708                         // see if a mesh
 709                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
 710                         {
 711                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
 712                                 if (!strcmp(skinfileitem->name, meshname) && strcmp(skinfileitem->replacement, "common/nodraw") && strcmp(skinfileitem->replacement, "textures/common/nodraw"))
 713                                 {
 714                                         if (!Mod_LoadSkinFrame(&tempskinframe, skinfileitem->replacement, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
 715                                                 if (cls.state != ca_dedicated)
 716                                                         Con_Printf("mesh \"%s\": failed to load skin #%i \"%s\"\n", meshname, i, skinfileitem->replacement);
 717                                         Mod_BuildAliasSkinFromSkinFrame(skin, &tempskinframe);
 718                                         break;
 719                                 }
 720                         }
 721                 }
 722         }
 723         else
 724         {
 725                 if (!Mod_LoadSkinFrame(&tempskinframe, shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
 726                         if (cls.state != ca_dedicated)
 727                                 Con_Printf("Can't find texture \"%s\" for mesh \"%s\", using grey checkerboard\n", shadername, meshname);
 728                 Mod_BuildAliasSkinFromSkinFrame(skin, &tempskinframe);
 729         }
 730 }
 731
 732 #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);
 733 #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);
 734 void Mod_IDP0_Load(model_t *mod, void *buffer, void *bufferend)
 735 {
 736         int i, j, version, totalskins, skinwidth, skinheight, groupframes, groupskins, numverts;
 737         float scales, scalet, interval;
 738         msurface_t *surface;
 739         unsigned char *data;
 740         mdl_t *pinmodel;
 741         stvert_t *pinstverts;
 742         dtriangle_t *pintriangles;
 743         daliasskintype_t *pinskintype;
 744         daliasskingroup_t *pinskingroup;
 745         daliasskininterval_t *pinskinintervals;
 746         daliasframetype_t *pinframetype;
 747         daliasgroup_t *pinframegroup;
 748         unsigned char *datapointer, *startframes, *startskins;
 749         char name[MAX_QPATH];
 750         skinframe_t tempskinframe;
 751         animscene_t *tempskinscenes;
 752         texture_t *tempaliasskins;
 753         float *vertst;
 754         int *vertonseam, *vertremap;
 755         skinfile_t *skinfiles;
 756
 757         datapointer = (unsigned char *)buffer;
 758         pinmodel = (mdl_t *)datapointer;
 759         datapointer += sizeof(mdl_t);
 760
 761         version = LittleLong (pinmodel->version);
 762         if (version != ALIAS_VERSION)
 763                 Host_Error ("%s has wrong version number (%i should be %i)",
 764                                  loadmodel->name, version, ALIAS_VERSION);
 765
 766         loadmodel->type = mod_alias;
 767         loadmodel->DrawSky = NULL;
 768         loadmodel->Draw = R_Q1BSP_Draw;
 769         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
 770         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
 771         loadmodel->DrawLight = R_Q1BSP_DrawLight;
 772         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
 773
 774         loadmodel->num_surfaces = 1;
 775         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
 776         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int));
 777         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
 778         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
 779         loadmodel->surfacelist[0] = 0;
 780
 781         loadmodel->numskins = LittleLong(pinmodel->numskins);
 782         BOUNDI(loadmodel->numskins,0,65536);
 783         skinwidth = LittleLong (pinmodel->skinwidth);
 784         BOUNDI(skinwidth,0,65536);
 785         skinheight = LittleLong (pinmodel->skinheight);
 786         BOUNDI(skinheight,0,65536);
 787         numverts = LittleLong(pinmodel->numverts);
 788         BOUNDI(numverts,0,65536);
 789         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->numtris);
 790         BOUNDI(loadmodel->surfmesh.num_triangles,0,65536);
 791         loadmodel->numframes = LittleLong(pinmodel->numframes);
 792         BOUNDI(loadmodel->numframes,0,65536);
 793         loadmodel->synctype = (synctype_t)LittleLong (pinmodel->synctype);
 794         BOUNDI(loadmodel->synctype,0,2);
 795         loadmodel->flags = LittleLong (pinmodel->flags);
 796
 797         for (i = 0;i < 3;i++)
 798         {
 799                 loadmodel->surfmesh.num_morphmdlframescale[i] = LittleFloat (pinmodel->scale[i]);
 800                 loadmodel->surfmesh.num_morphmdlframetranslate[i] = LittleFloat (pinmodel->scale_origin[i]);
 801         }
 802
 803         startskins = datapointer;
 804         totalskins = 0;
 805         for (i = 0;i < loadmodel->numskins;i++)
 806         {
 807                 pinskintype = (daliasskintype_t *)datapointer;
 808                 datapointer += sizeof(daliasskintype_t);
 809                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 810                         groupskins = 1;
 811                 else
 812                 {
 813                         pinskingroup = (daliasskingroup_t *)datapointer;
 814                         datapointer += sizeof(daliasskingroup_t);
 815                         groupskins = LittleLong(pinskingroup->numskins);
 816                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 817                 }
 818
 819                 for (j = 0;j < groupskins;j++)
 820                 {
 821                         datapointer += skinwidth * skinheight;
 822                         totalskins++;
 823                 }
 824         }
 825
 826         pinstverts = (stvert_t *)datapointer;
 827         datapointer += sizeof(stvert_t) * numverts;
 828
 829         pintriangles = (dtriangle_t *)datapointer;
 830         datapointer += sizeof(dtriangle_t) * loadmodel->surfmesh.num_triangles;
 831
 832         startframes = datapointer;
 833         loadmodel->surfmesh.num_morphframes = 0;
 834         for (i = 0;i < loadmodel->numframes;i++)
 835         {
 836                 pinframetype = (daliasframetype_t *)datapointer;
 837                 datapointer += sizeof(daliasframetype_t);
 838                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 839                         groupframes = 1;
 840                 else
 841                 {
 842                         pinframegroup = (daliasgroup_t *)datapointer;
 843                         datapointer += sizeof(daliasgroup_t);
 844                         groupframes = LittleLong(pinframegroup->numframes);
 845                         datapointer += sizeof(daliasinterval_t) * groupframes;
 846                 }
 847
 848                 for (j = 0;j < groupframes;j++)
 849                 {
 850                         datapointer += sizeof(daliasframe_t);
 851                         datapointer += sizeof(trivertx_t) * numverts;
 852                         loadmodel->surfmesh.num_morphframes++;
 853                 }
 854         }
 855
 856         // store texture coordinates into temporary array, they will be stored
 857         // after usage is determined (triangle data)
 858         vertst = (float *)Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
 859         vertremap = (int *)Mem_Alloc(tempmempool, numverts * 3 * sizeof(int));
 860         vertonseam = vertremap + numverts * 2;
 861
 862         scales = 1.0 / skinwidth;
 863         scalet = 1.0 / skinheight;
 864         for (i = 0;i < numverts;i++)
 865         {
 866                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 867                 vertst[i*2+0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 868                 vertst[i*2+1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 869                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
 870                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
 871         }
 872
 873 // load triangle data
 874         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->surfmesh.num_triangles);
 875
 876         // read the triangle elements
 877         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 878                 for (j = 0;j < 3;j++)
 879                         loadmodel->surfmesh.data_element3i[i*3+j] = LittleLong(pintriangles[i].vertindex[j]);
 880         // validate (note numverts is used because this is the original data)
 881         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, numverts, __FILE__, __LINE__);
 882         // now butcher the elements according to vertonseam and tri->facesfront
 883         // and then compact the vertex set to remove duplicates
 884         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 885                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 886                         for (j = 0;j < 3;j++)
 887                                 if (vertonseam[loadmodel->surfmesh.data_element3i[i*3+j]])
 888                                         loadmodel->surfmesh.data_element3i[i*3+j] += numverts;
 889         // count the usage
 890         // (this uses vertremap to count usage to save some memory)
 891         for (i = 0;i < numverts*2;i++)
 892                 vertremap[i] = 0;
 893         for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
 894                 vertremap[loadmodel->surfmesh.data_element3i[i]]++;
 895         // build remapping table and compact array
 896         loadmodel->surfmesh.num_vertices = 0;
 897         for (i = 0;i < numverts*2;i++)
 898         {
 899                 if (vertremap[i])
 900                 {
 901                         vertremap[i] = loadmodel->surfmesh.num_vertices;
 902                         vertst[loadmodel->surfmesh.num_vertices*2+0] = vertst[i*2+0];
 903                         vertst[loadmodel->surfmesh.num_vertices*2+1] = vertst[i*2+1];
 904                         loadmodel->surfmesh.num_vertices++;
 905                 }
 906                 else
 907                         vertremap[i] = -1; // not used at all
 908         }
 909         // remap the elements to the new vertex set
 910         for (i = 0;i < loadmodel->surfmesh.num_triangles * 3;i++)
 911                 loadmodel->surfmesh.data_element3i[i] = vertremap[loadmodel->surfmesh.data_element3i[i]];
 912         // store the texture coordinates
 913         loadmodel->surfmesh.data_texcoordtexture2f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * loadmodel->surfmesh.num_vertices);
 914         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
 915         {
 916                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = vertst[i*2+0];
 917                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = vertst[i*2+1];
 918         }
 919
 920 // load the frames
 921         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 922         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
 923         loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
 924         Mod_MDL_LoadFrames (startframes, numverts, vertremap);
 925         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
 926         Mod_Alias_CalculateBoundingBox();
 927         Mod_Alias_Mesh_CompileFrameZero();
 928
 929         Mem_Free(vertst);
 930         Mem_Free(vertremap);
 931
 932         // load the skins
 933         skinfiles = Mod_LoadSkinFiles();
 934         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 935         loadmodel->num_textures = loadmodel->num_surfaces;
 936         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
 937         if (skinfiles)
 938         {
 939                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
 940                 Mod_FreeSkinFiles(skinfiles);
 941                 for (i = 0;i < loadmodel->numskins;i++)
 942                 {
 943                         loadmodel->skinscenes[i].firstframe = i;
 944                         loadmodel->skinscenes[i].framecount = 1;
 945                         loadmodel->skinscenes[i].loop = true;
 946                         loadmodel->skinscenes[i].framerate = 10;
 947                 }
 948         }
 949         else
 950         {
 951                 totalskins = 0;
 952                 datapointer = startskins;
 953                 for (i = 0;i < loadmodel->numskins;i++)
 954                 {
 955                         pinskintype = (daliasskintype_t *)datapointer;
 956                         datapointer += sizeof(daliasskintype_t);
 957
 958                         if (pinskintype->type == ALIAS_SKIN_SINGLE)
 959                         {
 960                                 groupskins = 1;
 961                                 interval = 0.1f;
 962                         }
 963                         else
 964                         {
 965                                 pinskingroup = (daliasskingroup_t *)datapointer;
 966                                 datapointer += sizeof(daliasskingroup_t);
 967
 968                                 groupskins = LittleLong (pinskingroup->numskins);
 969
 970                                 pinskinintervals = (daliasskininterval_t *)datapointer;
 971                                 datapointer += sizeof(daliasskininterval_t) * groupskins;
 972
 973                                 interval = LittleFloat(pinskinintervals[0].interval);
 974                                 if (interval < 0.01f)
 975                                 {
 976                                         Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 977                                         interval = 0.1f;
 978                                 }
 979                         }
 980
 981                         sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 982                         loadmodel->skinscenes[i].firstframe = totalskins;
 983                         loadmodel->skinscenes[i].framecount = groupskins;
 984                         loadmodel->skinscenes[i].framerate = 1.0f / interval;
 985                         loadmodel->skinscenes[i].loop = true;
 986
 987                         for (j = 0;j < groupskins;j++)
 988                         {
 989                                 if (groupskins > 1)
 990                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 991                                 else
 992                                         sprintf (name, "%s_%i", loadmodel->name, i);
 993                                 if (!Mod_LoadSkinFrame(&tempskinframe, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP, true, true))
 994                                         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);
 995                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, &tempskinframe);
 996                                 datapointer += skinwidth * skinheight;
 997                                 totalskins++;
 998                         }
 999                 }
1000                 // check for skins that don't exist in the model, but do exist as external images
1001                 // (this was added because yummyluv kept pestering me about support for it)
1002                 while (Mod_LoadSkinFrame(&tempskinframe, va("%s_%i", loadmodel->name, loadmodel->numskins), (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP, true, true))
1003                 {
1004                         // expand the arrays to make room
1005                         tempskinscenes = loadmodel->skinscenes;
1006                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
1007                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
1008                         Mem_Free(tempskinscenes);
1009
1010                         tempaliasskins = loadmodel->data_textures;
1011                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
1012                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1013                         Mem_Free(tempaliasskins);
1014
1015                         // store the info about the new skin
1016                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, &tempskinframe);
1017                         strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
1018                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
1019                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
1020                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
1021                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
1022
1023                         //increase skin counts
1024                         loadmodel->numskins++;
1025                         totalskins++;
1026                 }
1027         }
1028
1029         surface = loadmodel->data_surfaces;
1030         surface->texture = loadmodel->data_textures;
1031         surface->num_firsttriangle = 0;
1032         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1033         surface->num_firstvertex = 0;
1034         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1035
1036         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1037 }
1038
1039 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
1040 {
1041         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
1042         float iskinwidth, iskinheight;
1043         unsigned char *data;
1044         msurface_t *surface;
1045         md2_t *pinmodel;
1046         unsigned char *base, *datapointer;
1047         md2frame_t *pinframe;
1048         char *inskin;
1049         md2triangle_t *intri;
1050         unsigned short *inst;
1051         struct md2verthash_s
1052         {
1053                 struct md2verthash_s *next;
1054                 unsigned short xyz;
1055                 unsigned short st;
1056         }
1057         *hash, **md2verthash, *md2verthashdata;
1058         skinframe_t tempskinframe;
1059         skinfile_t *skinfiles;
1060
1061         pinmodel = (md2_t *)buffer;
1062         base = (unsigned char *)buffer;
1063
1064         version = LittleLong (pinmodel->version);
1065         if (version != MD2ALIAS_VERSION)
1066                 Host_Error ("%s has wrong version number (%i should be %i)",
1067                         loadmodel->name, version, MD2ALIAS_VERSION);
1068
1069         loadmodel->type = mod_alias;
1070         loadmodel->DrawSky = NULL;
1071         loadmodel->Draw = R_Q1BSP_Draw;
1072         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1073         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1074         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1075         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1076
1077         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
1078                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
1079         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
1080                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
1081         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
1082                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
1083         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
1084                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
1085
1086         end = LittleLong(pinmodel->ofs_end);
1087         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
1088                 Host_Error ("%s is not a valid model", loadmodel->name);
1089         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
1090                 Host_Error ("%s is not a valid model", loadmodel->name);
1091         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
1092                 Host_Error ("%s is not a valid model", loadmodel->name);
1093         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
1094                 Host_Error ("%s is not a valid model", loadmodel->name);
1095         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
1096                 Host_Error ("%s is not a valid model", loadmodel->name);
1097
1098         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1099         numxyz = LittleLong(pinmodel->num_xyz);
1100         numst = LittleLong(pinmodel->num_st);
1101         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1102         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1103         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1104         skinwidth = LittleLong(pinmodel->skinwidth);
1105         skinheight = LittleLong(pinmodel->skinheight);
1106         iskinwidth = 1.0f / skinwidth;
1107         iskinheight = 1.0f / skinheight;
1108
1109         loadmodel->num_surfaces = 1;
1110         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1111         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]));
1112         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1113         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1114         loadmodel->surfacelist[0] = 0;
1115         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1116         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1117         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1118         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1119
1120         loadmodel->flags = 0; // there are no MD2 flags
1121         loadmodel->synctype = ST_RAND;
1122
1123         // load the skins
1124         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1125         skinfiles = Mod_LoadSkinFiles();
1126         if (skinfiles)
1127         {
1128                 loadmodel->num_textures = loadmodel->num_surfaces;
1129                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1130                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1131                 Mod_FreeSkinFiles(skinfiles);
1132         }
1133         else if (loadmodel->numskins)
1134         {
1135                 // skins found (most likely not a player model)
1136                 loadmodel->num_textures = loadmodel->num_surfaces;
1137                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1138                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1139                 {
1140                         if (!Mod_LoadSkinFrame(&tempskinframe, inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true, true))
1141                                 Con_Printf("%s is missing skin \"%s\"\n", loadmodel->name, inskin);
1142                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, &tempskinframe);
1143                 }
1144         }
1145         else
1146         {
1147                 // no skins (most likely a player model)
1148                 loadmodel->numskins = 1;
1149                 loadmodel->num_textures = loadmodel->num_surfaces;
1150                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1151                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
1152         }
1153
1154         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1155         for (i = 0;i < loadmodel->numskins;i++)
1156         {
1157                 loadmodel->skinscenes[i].firstframe = i;
1158                 loadmodel->skinscenes[i].framecount = 1;
1159                 loadmodel->skinscenes[i].loop = true;
1160                 loadmodel->skinscenes[i].framerate = 10;
1161         }
1162
1163         // load the triangles and stvert data
1164         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1165         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1166         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1167         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1168         // swap the triangle list
1169         loadmodel->surfmesh.num_vertices = 0;
1170         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1171         {
1172                 for (j = 0;j < 3;j++)
1173                 {
1174                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1175                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1176                         if (xyz >= numxyz)
1177                         {
1178                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1179                                 xyz = 0;
1180                         }
1181                         if (st >= numst)
1182                         {
1183                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1184                                 st = 0;
1185                         }
1186                         hashindex = (xyz * 256 + st) & 65535;
1187                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1188                                 if (hash->xyz == xyz && hash->st == st)
1189                                         break;
1190                         if (hash == NULL)
1191                         {
1192                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1193                                 hash->xyz = xyz;
1194                                 hash->st = st;
1195                                 hash->next = md2verthash[hashindex];
1196                                 md2verthash[hashindex] = hash;
1197                         }
1198                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1199                 }
1200         }
1201
1202         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1203         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));
1204         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1205         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1206         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1207         {
1208                 int sts, stt;
1209                 hash = md2verthashdata + i;
1210                 vertremap[i] = hash->xyz;
1211                 sts = LittleShort(inst[hash->st*2+0]);
1212                 stt = LittleShort(inst[hash->st*2+1]);
1213                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1214                 {
1215                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1216                         sts = 0;
1217                         stt = 0;
1218                 }
1219                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1220                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1221         }
1222
1223         Mem_Free(md2verthash);
1224         Mem_Free(md2verthashdata);
1225
1226         // load the frames
1227         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1228         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1229         {
1230                 int k;
1231                 trivertx_t *v;
1232                 trivertx_t *out;
1233                 pinframe = (md2frame_t *)datapointer;
1234                 datapointer += sizeof(md2frame_t);
1235                 // store the frame scale/translate into the appropriate array
1236                 for (j = 0;j < 3;j++)
1237                 {
1238                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1239                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1240                 }
1241                 // convert the vertices
1242                 v = (trivertx_t *)datapointer;
1243                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1244                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1245                         out[k] = v[vertremap[k]];
1246                 datapointer += numxyz * sizeof(trivertx_t);
1247
1248                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1249                 loadmodel->animscenes[i].firstframe = i;
1250                 loadmodel->animscenes[i].framecount = 1;
1251                 loadmodel->animscenes[i].framerate = 10;
1252                 loadmodel->animscenes[i].loop = true;
1253         }
1254
1255         Mem_Free(vertremap);
1256
1257         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1258         Mod_Alias_CalculateBoundingBox();
1259         Mod_Alias_Mesh_CompileFrameZero();
1260
1261         surface = loadmodel->data_surfaces;
1262         surface->texture = loadmodel->data_textures;
1263         surface->num_firsttriangle = 0;
1264         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1265         surface->num_firstvertex = 0;
1266         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1267
1268         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1269 }
1270
1271 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1272 {
1273         int i, j, k, version, meshvertices, meshtriangles;
1274         unsigned char *data;
1275         msurface_t *surface;
1276         md3modelheader_t *pinmodel;
1277         md3frameinfo_t *pinframe;
1278         md3mesh_t *pinmesh;
1279         md3tag_t *pintag;
1280         skinfile_t *skinfiles;
1281
1282         pinmodel = (md3modelheader_t *)buffer;
1283
1284         if (memcmp(pinmodel->identifier, "IDP3", 4))
1285                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1286         version = LittleLong (pinmodel->version);
1287         if (version != MD3VERSION)
1288                 Host_Error ("%s has wrong version number (%i should be %i)",
1289                         loadmodel->name, version, MD3VERSION);
1290
1291         skinfiles = Mod_LoadSkinFiles();
1292         if (loadmodel->numskins < 1)
1293                 loadmodel->numskins = 1;
1294
1295         loadmodel->type = mod_alias;
1296         loadmodel->DrawSky = NULL;
1297         loadmodel->Draw = R_Q1BSP_Draw;
1298         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1299         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1300         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1301         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1302         loadmodel->flags = LittleLong(pinmodel->flags);
1303         loadmodel->synctype = ST_RAND;
1304
1305         // set up some global info about the model
1306         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1307         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1308
1309         // make skinscenes for the skins (no groups)
1310         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1311         for (i = 0;i < loadmodel->numskins;i++)
1312         {
1313                 loadmodel->skinscenes[i].firstframe = i;
1314                 loadmodel->skinscenes[i].framecount = 1;
1315                 loadmodel->skinscenes[i].loop = true;
1316                 loadmodel->skinscenes[i].framerate = 10;
1317         }
1318
1319         // load frameinfo
1320         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1321         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1322         {
1323                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1324                 loadmodel->animscenes[i].firstframe = i;
1325                 loadmodel->animscenes[i].framecount = 1;
1326                 loadmodel->animscenes[i].framerate = 10;
1327                 loadmodel->animscenes[i].loop = true;
1328         }
1329
1330         // load tags
1331         loadmodel->num_tagframes = loadmodel->numframes;
1332         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1333         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1334         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1335         {
1336                 strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1337                 for (j = 0;j < 9;j++)
1338                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1339                 for (j = 0;j < 3;j++)
1340                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1341                 //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);
1342         }
1343
1344         // load meshes
1345         meshvertices = 0;
1346         meshtriangles = 0;
1347         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)))
1348         {
1349                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1350                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1351                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1352                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1353                 meshvertices += LittleLong(pinmesh->num_vertices);
1354                 meshtriangles += LittleLong(pinmesh->num_triangles);
1355         }
1356
1357         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1358         loadmodel->num_textures = loadmodel->num_surfaces;
1359         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));
1360         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1361         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1362         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1363         loadmodel->surfmesh.num_vertices = meshvertices;
1364         loadmodel->surfmesh.num_triangles = meshtriangles;
1365         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1366         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1367         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1368         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1369         loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
1370
1371         meshvertices = 0;
1372         meshtriangles = 0;
1373         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)))
1374         {
1375                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1376                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1377                 loadmodel->surfacelist[i] = i;
1378                 surface = loadmodel->data_surfaces + i;
1379                 surface->texture = loadmodel->data_textures + i;
1380                 surface->num_firsttriangle = meshtriangles;
1381                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1382                 surface->num_firstvertex = meshvertices;
1383                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1384                 meshvertices += surface->num_vertices;
1385                 meshtriangles += surface->num_triangles;
1386
1387                 for (j = 0;j < surface->num_triangles * 3;j++)
1388                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1389                 for (j = 0;j < surface->num_vertices;j++)
1390                 {
1391                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1392                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1393                 }
1394                 for (j = 0;j < loadmodel->numframes;j++)
1395                 {
1396                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1397                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1398                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1399                         {
1400                                 out->origin[0] = LittleShort(in->origin[0]);
1401                                 out->origin[1] = LittleShort(in->origin[1]);
1402                                 out->origin[2] = LittleShort(in->origin[2]);
1403                                 out->pitch = in->pitch;
1404                                 out->yaw = in->yaw;
1405                         }
1406                 }
1407
1408                 if (LittleLong(pinmesh->num_shaders) >= 1)
1409                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name);
1410                 else
1411                         for (j = 0;j < loadmodel->numskins;j++)
1412                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1413
1414                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1415         }
1416         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1417         Mod_Alias_Mesh_CompileFrameZero();
1418         Mod_Alias_CalculateBoundingBox();
1419         Mod_FreeSkinFiles(skinfiles);
1420
1421         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1422 }
1423
1424 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1425 {
1426         zymtype1header_t *pinmodel, *pheader;
1427         unsigned char *pbase;
1428         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1429         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose;
1430         zymvertex_t *verts, *vertdata;
1431         zymscene_t *scene;
1432         zymbone_t *bone;
1433         char *shadername;
1434         skinfile_t *skinfiles;
1435         unsigned char *data;
1436         msurface_t *surface;
1437
1438         pinmodel = (zymtype1header_t *)buffer;
1439         pbase = (unsigned char *)buffer;
1440         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1441                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model", loadmodel->name);
1442         if (BigLong(pinmodel->type) != 1)
1443                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1444
1445         loadmodel->type = mod_alias;
1446         loadmodel->flags = 0; // there are no flags on zym models
1447         loadmodel->synctype = ST_RAND;
1448
1449         // byteswap header
1450         pheader = pinmodel;
1451         pheader->type = BigLong(pinmodel->type);
1452         pheader->filesize = BigLong(pinmodel->filesize);
1453         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1454         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1455         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1456         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1457         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1458         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1459         pheader->radius = BigFloat(pinmodel->radius);
1460         pheader->numverts = BigLong(pinmodel->numverts);
1461         pheader->numtris = BigLong(pinmodel->numtris);
1462         pheader->numshaders = BigLong(pinmodel->numshaders);
1463         pheader->numbones = BigLong(pinmodel->numbones);
1464         pheader->numscenes = BigLong(pinmodel->numscenes);
1465         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1466         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1467         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1468         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1469         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1470         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1471         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1472         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1473         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1474         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1475         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1476         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1477         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1478         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1479         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1480         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1481         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1482         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1483
1484         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1485         {
1486                 Con_Printf("%s has no geometry\n", loadmodel->name);
1487                 return;
1488         }
1489         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1490         {
1491                 Con_Printf("%s has no animations\n", loadmodel->name);
1492                 return;
1493         }
1494
1495         loadmodel->DrawSky = NULL;
1496         loadmodel->Draw = R_Q1BSP_Draw;
1497         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1498         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1499         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1500         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1501
1502         loadmodel->numframes = pheader->numscenes;
1503         loadmodel->num_surfaces = pheader->numshaders;
1504
1505         skinfiles = Mod_LoadSkinFiles();
1506         if (loadmodel->numskins < 1)
1507                 loadmodel->numskins = 1;
1508
1509         // make skinscenes for the skins (no groups)
1510         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1511         for (i = 0;i < loadmodel->numskins;i++)
1512         {
1513                 loadmodel->skinscenes[i].firstframe = i;
1514                 loadmodel->skinscenes[i].framecount = 1;
1515                 loadmodel->skinscenes[i].loop = true;
1516                 loadmodel->skinscenes[i].framerate = 10;
1517         }
1518
1519         // model bbox
1520         modelradius = pheader->radius;
1521         for (i = 0;i < 3;i++)
1522         {
1523                 loadmodel->normalmins[i] = pheader->mins[i];
1524                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1525                 loadmodel->rotatedmins[i] = -modelradius;
1526                 loadmodel->rotatedmaxs[i] = modelradius;
1527         }
1528         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1529         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1530         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1531         if (loadmodel->yawmaxs[0] > modelradius)
1532                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1533         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1534         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1535         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1536         loadmodel->radius = modelradius;
1537         loadmodel->radius2 = modelradius * modelradius;
1538
1539         // go through the lumps, swapping things
1540
1541         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1542         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1543         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1544         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1545         for (i = 0;i < pheader->numscenes;i++)
1546         {
1547                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1548                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1549                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1550                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1551                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1552                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1553                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1554                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1555                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1556                 if (loadmodel->animscenes[i].framerate < 0)
1557                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1558                 scene++;
1559         }
1560
1561         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1562         loadmodel->num_bones = pheader->numbones;
1563         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(aliasbone_t));
1564         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1565         for (i = 0;i < pheader->numbones;i++)
1566         {
1567                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1568                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1569                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1570                 if (loadmodel->data_bones[i].parent >= i)
1571                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1572         }
1573
1574         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1575         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1576         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1577         for (i = 0;i < pheader->numverts;i++)
1578         {
1579                 vertbonecounts[i] = BigLong(bonecount[i]);
1580                 if (vertbonecounts[i] != 1)
1581                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1582         }
1583
1584         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]);
1585
1586         meshvertices = pheader->numverts;
1587         meshtriangles = pheader->numtris;
1588
1589         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1590         loadmodel->num_textures = loadmodel->num_surfaces;
1591         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]));
1592         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1593         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1594         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1595         loadmodel->surfmesh.num_vertices = meshvertices;
1596         loadmodel->surfmesh.num_triangles = meshtriangles;
1597         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1598         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1599         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1600         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1601         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1602         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1603         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1604         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1605         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1606         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1607         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1608         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1609
1610         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1611         poses = (float *) (pheader->lump_poses.start + pbase);
1612         for (i = 0;i < pheader->lump_poses.length / 4;i++)
1613                 loadmodel->data_poses[i] = BigFloat(poses[i]);
1614
1615         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1616         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1617         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
1618         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1619         // (converting from weight-blending skeletal animation to
1620         //  deformation-based skeletal animation)
1621         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1622         for (i = 0;i < loadmodel->num_bones;i++)
1623         {
1624                 const float *m = loadmodel->data_poses + i * 12;
1625                 if (loadmodel->data_bones[i].parent >= 0)
1626                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1627                 else
1628                         for (k = 0;k < 12;k++)
1629                                 bonepose[12*i+k] = m[k];
1630         }
1631         for (j = 0;j < pheader->numverts;j++)
1632         {
1633                 // this format really should have had a per vertexweight weight value...
1634                 // but since it does not, the weighting is completely ignored and
1635                 // only one weight is allowed per vertex
1636                 int boneindex = BigLong(vertdata[j].bonenum);
1637                 const float *m = bonepose + 12 * boneindex;
1638                 float relativeorigin[3];
1639                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
1640                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
1641                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
1642                 // transform the vertex bone weight into the base mesh
1643                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
1644                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
1645                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
1646                 // store the weight as the primary weight on this vertex
1647                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1648                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = 1;
1649         }
1650         Z_Free(bonepose);
1651         // normals and tangents are calculated after elements are loaded
1652
1653         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1654         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
1655         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
1656         for (i = 0;i < pheader->numverts;i++)
1657         {
1658                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1659                 // flip T coordinate for OpenGL
1660                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1661         }
1662
1663         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1664         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1665         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1666
1667         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1668         //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)
1669         // byteswap, validate, and swap winding order of tris
1670         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1671         if (pheader->lump_render.length != count)
1672                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
1673         renderlist = (int *) (pheader->lump_render.start + pbase);
1674         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
1675         meshtriangles = 0;
1676         for (i = 0;i < loadmodel->num_surfaces;i++)
1677         {
1678                 int firstvertex, lastvertex;
1679                 if (renderlist >= renderlistend)
1680                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1681                 count = BigLong(*renderlist);renderlist++;
1682                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
1683                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1684
1685                 loadmodel->surfacelist[i] = i;
1686                 surface = loadmodel->data_surfaces + i;
1687                 surface->texture = loadmodel->data_textures + i;
1688                 surface->num_firsttriangle = meshtriangles;
1689                 surface->num_triangles = count;
1690                 meshtriangles += surface->num_triangles;
1691
1692                 // load the elements
1693                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1694                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
1695                 {
1696                         outelements[j*3+2] = BigLong(renderlist[0]);
1697                         outelements[j*3+1] = BigLong(renderlist[1]);
1698                         outelements[j*3+0] = BigLong(renderlist[2]);
1699                 }
1700                 // validate the elements and find the used vertex range
1701                 firstvertex = meshvertices;
1702                 lastvertex = 0;
1703                 for (j = 0;j < surface->num_triangles * 3;j++)
1704                 {
1705                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
1706                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
1707                         firstvertex = min(firstvertex, outelements[j]);
1708                         lastvertex = max(lastvertex, outelements[j]);
1709                 }
1710                 surface->num_firstvertex = firstvertex;
1711                 surface->num_vertices = lastvertex + 1 - firstvertex;
1712
1713                 // since zym models do not have named sections, reuse their shader
1714                 // name as the section name
1715                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
1716                 if (shadername[0])
1717                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
1718                 else
1719                         for (j = 0;j < loadmodel->numskins;j++)
1720                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1721         }
1722         Mod_FreeSkinFiles(skinfiles);
1723         Mem_Free(vertbonecounts);
1724         Mem_Free(verts);
1725
1726         // compute all the mesh information that was not loaded from the file
1727         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
1728         Mod_BuildBaseBonePoses();
1729         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
1730         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);
1731         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1732
1733         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1734 }
1735
1736 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1737 {
1738         dpmheader_t *pheader;
1739         dpmframe_t *frame;
1740         dpmbone_t *bone;
1741         dpmmesh_t *dpmmesh;
1742         unsigned char *pbase;
1743         int i, j, k, meshvertices, meshtriangles;
1744         skinfile_t *skinfiles;
1745         unsigned char *data;
1746         float *bonepose;
1747
1748         pheader = (dpmheader_t *)buffer;
1749         pbase = (unsigned char *)buffer;
1750         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
1751                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model", loadmodel->name);
1752         if (BigLong(pheader->type) != 2)
1753                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1754
1755         loadmodel->type = mod_alias;
1756         loadmodel->flags = 0; // there are no flags on zym models
1757         loadmodel->synctype = ST_RAND;
1758
1759         // byteswap header
1760         pheader->type = BigLong(pheader->type);
1761         pheader->filesize = BigLong(pheader->filesize);
1762         pheader->mins[0] = BigFloat(pheader->mins[0]);
1763         pheader->mins[1] = BigFloat(pheader->mins[1]);
1764         pheader->mins[2] = BigFloat(pheader->mins[2]);
1765         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
1766         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
1767         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
1768         pheader->yawradius = BigFloat(pheader->yawradius);
1769         pheader->allradius = BigFloat(pheader->allradius);
1770         pheader->num_bones = BigLong(pheader->num_bones);
1771         pheader->num_meshs = BigLong(pheader->num_meshs);
1772         pheader->num_frames = BigLong(pheader->num_frames);
1773         pheader->ofs_bones = BigLong(pheader->ofs_bones);
1774         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
1775         pheader->ofs_frames = BigLong(pheader->ofs_frames);
1776
1777         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
1778         {
1779                 Con_Printf("%s has no geometry\n", loadmodel->name);
1780                 return;
1781         }
1782         if (pheader->num_frames < 1)
1783         {
1784                 Con_Printf("%s has no frames\n", loadmodel->name);
1785                 return;
1786         }
1787
1788         loadmodel->DrawSky = NULL;
1789         loadmodel->Draw = R_Q1BSP_Draw;
1790         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1791         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1792         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1793         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1794
1795         // model bbox
1796         for (i = 0;i < 3;i++)
1797         {
1798                 loadmodel->normalmins[i] = pheader->mins[i];
1799                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1800                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
1801                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
1802                 loadmodel->rotatedmins[i] = -pheader->allradius;
1803                 loadmodel->rotatedmaxs[i] = pheader->allradius;
1804         }
1805         loadmodel->radius = pheader->allradius;
1806         loadmodel->radius2 = pheader->allradius * pheader->allradius;
1807
1808         // load external .skin files if present
1809         skinfiles = Mod_LoadSkinFiles();
1810         if (loadmodel->numskins < 1)
1811                 loadmodel->numskins = 1;
1812
1813         meshvertices = 0;
1814         meshtriangles = 0;
1815
1816         // gather combined statistics from the meshes
1817         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1818         for (i = 0;i < (int)pheader->num_meshs;i++)
1819         {
1820                 int numverts = BigLong(dpmmesh->num_verts);
1821                 meshvertices += numverts;;
1822                 meshtriangles += BigLong(dpmmesh->num_tris);
1823                 dpmmesh++;
1824         }
1825
1826         loadmodel->numframes = pheader->num_frames;
1827         loadmodel->num_bones = pheader->num_bones;
1828         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
1829         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = pheader->num_meshs;
1830         // do most allocations as one merged chunk
1831         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));
1832         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1833         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1834         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1835         loadmodel->surfmesh.num_vertices = meshvertices;
1836         loadmodel->surfmesh.num_triangles = meshtriangles;
1837         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1838         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1839         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1840         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1841         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1842         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1843         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1844         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1845         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1846         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1847         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1848         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1849         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
1850         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
1851         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1852
1853         for (i = 0;i < loadmodel->numskins;i++)
1854         {
1855                 loadmodel->skinscenes[i].firstframe = i;
1856                 loadmodel->skinscenes[i].framecount = 1;
1857                 loadmodel->skinscenes[i].loop = true;
1858                 loadmodel->skinscenes[i].framerate = 10;
1859         }
1860
1861         // load the bone info
1862         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
1863         for (i = 0;i < loadmodel->num_bones;i++)
1864         {
1865                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1866                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1867                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1868                 if (loadmodel->data_bones[i].parent >= i)
1869                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1870         }
1871
1872         // load the frames
1873         frame = (dpmframe_t *) (pbase + pheader->ofs_frames);
1874         for (i = 0;i < loadmodel->numframes;i++)
1875         {
1876                 const float *poses;
1877                 memcpy(loadmodel->animscenes[i].name, frame->name, sizeof(frame->name));
1878                 loadmodel->animscenes[i].firstframe = i;
1879                 loadmodel->animscenes[i].framecount = 1;
1880                 loadmodel->animscenes[i].loop = true;
1881                 loadmodel->animscenes[i].framerate = 10;
1882                 // load the bone poses for this frame
1883                 poses = (float *) (pbase + BigLong(frame->ofs_bonepositions));
1884                 for (j = 0;j < loadmodel->num_bones*12;j++)
1885                         loadmodel->data_poses[i * loadmodel->num_bones*12 + j] = BigFloat(poses[j]);
1886                 // stuff not processed here: mins, maxs, yawradius, allradius
1887                 frame++;
1888         }
1889
1890         // load the meshes now
1891         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1892         meshvertices = 0;
1893         meshtriangles = 0;
1894         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1895         // (converting from weight-blending skeletal animation to
1896         //  deformation-based skeletal animation)
1897         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1898         for (i = 0;i < loadmodel->num_bones;i++)
1899         {
1900                 const float *m = loadmodel->data_poses + i * 12;
1901                 if (loadmodel->data_bones[i].parent >= 0)
1902                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1903                 else
1904                         for (k = 0;k < 12;k++)
1905                                 bonepose[12*i+k] = m[k];
1906         }
1907         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
1908         {
1909                 const int *inelements;
1910                 int *outelements;
1911                 const float *intexcoord;
1912                 msurface_t *surface;
1913
1914                 loadmodel->surfacelist[i] = i;
1915                 surface = loadmodel->data_surfaces + i;
1916                 surface->texture = loadmodel->data_textures + i;
1917                 surface->num_firsttriangle = meshtriangles;
1918                 surface->num_triangles = BigLong(dpmmesh->num_tris);
1919                 surface->num_firstvertex = meshvertices;
1920                 surface->num_vertices = BigLong(dpmmesh->num_verts);
1921                 meshvertices += surface->num_vertices;
1922                 meshtriangles += surface->num_triangles;
1923
1924                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
1925                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1926                 for (j = 0;j < surface->num_triangles;j++)
1927                 {
1928                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
1929                         outelements[0] = surface->num_firstvertex + BigLong(inelements[2]);
1930                         outelements[1] = surface->num_firstvertex + BigLong(inelements[1]);
1931                         outelements[2] = surface->num_firstvertex + BigLong(inelements[0]);
1932                         inelements += 3;
1933                         outelements += 3;
1934                 }
1935
1936                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
1937                 for (j = 0;j < surface->num_vertices*2;j++)
1938                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
1939
1940                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
1941                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
1942                 {
1943                         float sum;
1944                         int l;
1945                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
1946                         data += sizeof(dpmvertex_t);
1947                         for (k = 0;k < numweights;k++)
1948                         {
1949                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
1950                                 int boneindex = BigLong(vert->bonenum);
1951                                 const float *m = bonepose + 12 * boneindex;
1952                                 float influence = BigFloat(vert->influence);
1953                                 float relativeorigin[3], relativenormal[3];
1954                                 relativeorigin[0] = BigFloat(vert->origin[0]);
1955                                 relativeorigin[1] = BigFloat(vert->origin[1]);
1956                                 relativeorigin[2] = BigFloat(vert->origin[2]);
1957                                 relativenormal[0] = BigFloat(vert->normal[0]);
1958                                 relativenormal[1] = BigFloat(vert->normal[1]);
1959                                 relativenormal[2] = BigFloat(vert->normal[2]);
1960                                 // blend the vertex bone weights into the base mesh
1961                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
1962                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
1963                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
1964                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
1965                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
1966                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
1967                                 if (!k)
1968                                 {
1969                                         // store the first (and often only) weight
1970                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = influence;
1971                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1972                                 }
1973                                 else
1974                                 {
1975                                         // sort the new weight into this vertex's weight table
1976                                         // (which only accepts up to 4 bones per vertex)
1977                                         for (l = 0;l < 4;l++)
1978                                         {
1979                                                 if (loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] < influence)
1980                                                 {
1981                                                         // move weaker influence weights out of the way first
1982                                                         int l2;
1983                                                         for (l2 = 3;l2 > l;l2--)
1984                                                         {
1985                                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2-1];
1986                                                                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2-1];
1987                                                         }
1988                                                         // store the new weight
1989                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] = influence;
1990                                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+l] = boneindex;
1991                                                         break;
1992                                                 }
1993                                         }
1994                                 }
1995                                 data += sizeof(dpmbonevert_t);
1996                         }
1997                         sum = 0;
1998                         for (l = 0;l < 4;l++)
1999                                 sum += loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l];
2000                         if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2001                         {
2002                                 float f = 1.0f / sum;
2003                                 for (l = 0;l < 4;l++)
2004                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] *= f;
2005                         }
2006                 }
2007
2008                 // since dpm models do not have named sections, reuse their shader name as the section name
2009                 if (dpmmesh->shadername[0])
2010                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
2011                 else
2012                         for (j = 0;j < loadmodel->numskins;j++)
2013                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
2014
2015                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
2016         }
2017         Z_Free(bonepose);
2018         Mod_FreeSkinFiles(skinfiles);
2019
2020         // compute all the mesh information that was not loaded from the file
2021         Mod_BuildBaseBonePoses();
2022         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);
2023         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2024
2025         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2026 }
2027
2028 // no idea why PSK/PSA files contain weird quaternions but they do...
2029 #define PSKQUATNEGATIONS
2030 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2031 {
2032         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
2033         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
2034         fs_offset_t filesize;
2035         pskpnts_t *pnts;
2036         pskvtxw_t *vtxw;
2037         pskface_t *faces;
2038         pskmatt_t *matts;
2039         pskboneinfo_t *bones;
2040         pskrawweights_t *rawweights;
2041         pskboneinfo_t *animbones;
2042         pskaniminfo_t *anims;
2043         pskanimkeys_t *animkeys;
2044         void *animfilebuffer, *animbuffer, *animbufferend;
2045         unsigned char *data;
2046         pskchunk_t *pchunk;
2047         skinfile_t *skinfiles;
2048         char animname[MAX_QPATH];
2049
2050         pchunk = (pskchunk_t *)buffer;
2051         if (strcmp(pchunk->id, "ACTRHEAD"))
2052                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2053
2054         loadmodel->type = mod_alias;
2055         loadmodel->DrawSky = NULL;
2056         loadmodel->Draw = R_Q1BSP_Draw;
2057         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
2058         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
2059         loadmodel->DrawLight = R_Q1BSP_DrawLight;
2060         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2061         loadmodel->flags = 0; // there are no flags on zym models
2062         loadmodel->synctype = ST_RAND;
2063
2064         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2065         strlcat(animname, ".psa", sizeof(animname));
2066         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2067         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2068         if (animbuffer == NULL)
2069                 Host_Error("%s: can't find .psa file (%s)", loadmodel->name, animname);
2070
2071         numpnts = 0;
2072         pnts = NULL;
2073         numvtxw = 0;
2074         vtxw = NULL;
2075         numfaces = 0;
2076         faces = NULL;
2077         nummatts = 0;
2078         matts = NULL;
2079         numbones = 0;
2080         bones = NULL;
2081         numrawweights = 0;
2082         rawweights = NULL;
2083         numanims = 0;
2084         anims = NULL;
2085         numanimkeys = 0;
2086         animkeys = NULL;
2087
2088         while (buffer < bufferend)
2089         {
2090                 pchunk = (pskchunk_t *)buffer;
2091                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2092                 version = LittleLong(pchunk->version);
2093                 recordsize = LittleLong(pchunk->recordsize);
2094                 numrecords = LittleLong(pchunk->numrecords);
2095                 if (developer.integer >= 100)
2096                         Con_Printf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2097                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2098                         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);
2099                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2100                 {
2101                         // nothing to do
2102                 }
2103                 else if (!strcmp(pchunk->id, "PNTS0000"))
2104                 {
2105                         pskpnts_t *p;
2106                         if (recordsize != sizeof(*p))
2107                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2108                         // byteswap in place and keep the pointer
2109                         numpnts = numrecords;
2110                         pnts = (pskpnts_t *)buffer;
2111                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2112                         {
2113                                 p->origin[0] = LittleFloat(p->origin[0]);
2114                                 p->origin[1] = LittleFloat(p->origin[1]);
2115                                 p->origin[2] = LittleFloat(p->origin[2]);
2116                         }
2117                         buffer = p;
2118                 }
2119                 else if (!strcmp(pchunk->id, "VTXW0000"))
2120                 {
2121                         pskvtxw_t *p;
2122                         if (recordsize != sizeof(*p))
2123                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2124                         // byteswap in place and keep the pointer
2125                         numvtxw = numrecords;
2126                         vtxw = (pskvtxw_t *)buffer;
2127                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2128                         {
2129                                 p->pntsindex = LittleShort(p->pntsindex);
2130                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2131                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2132                                 if (p->pntsindex >= numpnts)
2133                                 {
2134                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2135                                         p->pntsindex = 0;
2136                                 }
2137                         }
2138                         buffer = p;
2139                 }
2140                 else if (!strcmp(pchunk->id, "FACE0000"))
2141                 {
2142                         pskface_t *p;
2143                         if (recordsize != sizeof(*p))
2144                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2145                         // byteswap in place and keep the pointer
2146                         numfaces = numrecords;
2147                         faces = (pskface_t *)buffer;
2148                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2149                         {
2150                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2151                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2152                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2153                                 p->group = LittleLong(p->group);
2154                                 if (p->vtxwindex[0] >= numvtxw)
2155                                 {
2156                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2157                                         p->vtxwindex[0] = 0;
2158                                 }
2159                                 if (p->vtxwindex[1] >= numvtxw)
2160                                 {
2161                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2162                                         p->vtxwindex[1] = 0;
2163                                 }
2164                                 if (p->vtxwindex[2] >= numvtxw)
2165                                 {
2166                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2167                                         p->vtxwindex[2] = 0;
2168                                 }
2169                         }
2170                         buffer = p;
2171                 }
2172                 else if (!strcmp(pchunk->id, "MATT0000"))
2173                 {
2174                         pskmatt_t *p;
2175                         if (recordsize != sizeof(*p))
2176                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2177                         // byteswap in place and keep the pointer
2178                         nummatts = numrecords;
2179                         matts = (pskmatt_t *)buffer;
2180                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2181                         {
2182                                 // nothing to do
2183                         }
2184                         buffer = p;
2185                 }
2186                 else if (!strcmp(pchunk->id, "REFSKELT"))
2187                 {
2188                         pskboneinfo_t *p;
2189                         if (recordsize != sizeof(*p))
2190                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2191                         // byteswap in place and keep the pointer
2192                         numbones = numrecords;
2193                         bones = (pskboneinfo_t *)buffer;
2194                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2195                         {
2196                                 p->numchildren = LittleLong(p->numchildren);
2197                                 p->parent = LittleLong(p->parent);
2198                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2199                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2200                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2201                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2202                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2203                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2204                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2205                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2206                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2207                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2208                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2209 #ifdef PSKQUATNEGATIONS
2210                                 if (index)
2211                                 {
2212                                         p->basepose.quat[0] *= -1;
2213                                         p->basepose.quat[1] *= -1;
2214                                         p->basepose.quat[2] *= -1;
2215                                 }
2216                                 else
2217                                 {
2218                                         p->basepose.quat[0] *=  1;
2219                                         p->basepose.quat[1] *= -1;
2220                                         p->basepose.quat[2] *=  1;
2221                                 }
2222 #endif
2223                                 if (p->parent < 0 || p->parent >= numbones)
2224                                 {
2225                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2226                                         p->parent = 0;
2227                                 }
2228                         }
2229                         buffer = p;
2230                 }
2231                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2232                 {
2233                         pskrawweights_t *p;
2234                         if (recordsize != sizeof(*p))
2235                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2236                         // byteswap in place and keep the pointer
2237                         numrawweights = numrecords;
2238                         rawweights = (pskrawweights_t *)buffer;
2239                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2240                         {
2241                                 p->weight = LittleFloat(p->weight);
2242                                 p->pntsindex = LittleLong(p->pntsindex);
2243                                 p->boneindex = LittleLong(p->boneindex);
2244                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2245                                 {
2246                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2247                                         p->pntsindex = 0;
2248                                 }
2249                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2250                                 {
2251                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2252                                         p->boneindex = 0;
2253                                 }
2254                         }
2255                         buffer = p;
2256                 }
2257         }
2258
2259         while (animbuffer < animbufferend)
2260         {
2261                 pchunk = (pskchunk_t *)animbuffer;
2262                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2263                 version = LittleLong(pchunk->version);
2264                 recordsize = LittleLong(pchunk->recordsize);
2265                 numrecords = LittleLong(pchunk->numrecords);
2266                 if (developer.integer >= 100)
2267                         Con_Printf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2268                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2269                         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);
2270                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2271                 {
2272                         // nothing to do
2273                 }
2274                 else if (!strcmp(pchunk->id, "BONENAMES"))
2275                 {
2276                         pskboneinfo_t *p;
2277                         if (recordsize != sizeof(*p))
2278                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2279                         // byteswap in place and keep the pointer
2280                         numanimbones = numrecords;
2281                         animbones = (pskboneinfo_t *)animbuffer;
2282                         // NOTE: supposedly psa does not need to match the psk model, the
2283                         // bones missing from the psa would simply use their base
2284                         // positions from the psk, but this is hard for me to implement
2285                         // and people can easily make animations that match.
2286                         if (numanimbones != numbones)
2287                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2288                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2289                         {
2290                                 p->numchildren = LittleLong(p->numchildren);
2291                                 p->parent = LittleLong(p->parent);
2292                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2293                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2294                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2295                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2296                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2297                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2298                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2299                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2300                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2301                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2302                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2303 #ifdef PSKQUATNEGATIONS
2304                                 if (index)
2305                                 {
2306                                         p->basepose.quat[0] *= -1;
2307                                         p->basepose.quat[1] *= -1;
2308                                         p->basepose.quat[2] *= -1;
2309                                 }
2310                                 else
2311                                 {
2312                                         p->basepose.quat[0] *=  1;
2313                                         p->basepose.quat[1] *= -1;
2314                                         p->basepose.quat[2] *=  1;
2315                                 }
2316 #endif
2317                                 if (p->parent < 0 || p->parent >= numanimbones)
2318                                 {
2319                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2320                                         p->parent = 0;
2321                                 }
2322                                 // check that bones are the same as in the base
2323                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2324                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2325                         }
2326                         animbuffer = p;
2327                 }
2328                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2329                 {
2330                         pskaniminfo_t *p;
2331                         if (recordsize != sizeof(*p))
2332                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2333                         // byteswap in place and keep the pointer
2334                         numanims = numrecords;
2335                         anims = (pskaniminfo_t *)animbuffer;
2336                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2337                         {
2338                                 p->numbones = LittleLong(p->numbones);
2339                                 p->playtime = LittleFloat(p->playtime);
2340                                 p->fps = LittleFloat(p->fps);
2341                                 p->firstframe = LittleLong(p->firstframe);
2342                                 p->numframes = LittleLong(p->numframes);
2343                                 if (p->numbones != numbones)
2344                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2345                         }
2346                         animbuffer = p;
2347                 }
2348                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2349                 {
2350                         pskanimkeys_t *p;
2351                         if (recordsize != sizeof(*p))
2352                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2353                         numanimkeys = numrecords;
2354                         animkeys = (pskanimkeys_t *)animbuffer;
2355                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2356                         {
2357                                 p->origin[0] = LittleFloat(p->origin[0]);
2358                                 p->origin[1] = LittleFloat(p->origin[1]);
2359                                 p->origin[2] = LittleFloat(p->origin[2]);
2360                                 p->quat[0] = LittleFloat(p->quat[0]);
2361                                 p->quat[1] = LittleFloat(p->quat[1]);
2362                                 p->quat[2] = LittleFloat(p->quat[2]);
2363                                 p->quat[3] = LittleFloat(p->quat[3]);
2364                                 p->frametime = LittleFloat(p->frametime);
2365 #ifdef PSKQUATNEGATIONS
2366                                 if (index % numbones)
2367                                 {
2368                                         p->quat[0] *= -1;
2369                                         p->quat[1] *= -1;
2370                                         p->quat[2] *= -1;
2371                                 }
2372                                 else
2373                                 {
2374                                         p->quat[0] *=  1;
2375                                         p->quat[1] *= -1;
2376                                         p->quat[2] *=  1;
2377                                 }
2378 #endif
2379                         }
2380                         animbuffer = p;
2381                         // TODO: allocate bonepose stuff
2382                 }
2383                 else
2384                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2385         }
2386
2387         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights || !numanims || !anims || !numanimkeys || !animkeys)
2388                 Host_Error("%s: missing required chunks", loadmodel->name);
2389
2390         loadmodel->numframes = 0;
2391         for (index = 0;index < numanims;index++)
2392                 loadmodel->numframes += anims[index].numframes;
2393
2394         if (numanimkeys != numbones * loadmodel->numframes)
2395                 Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2396
2397         meshvertices = numvtxw;
2398         meshtriangles = numfaces;
2399
2400         // load external .skin files if present
2401         skinfiles = Mod_LoadSkinFiles();
2402         if (loadmodel->numskins < 1)
2403                 loadmodel->numskins = 1;
2404         loadmodel->num_bones = numbones;
2405         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
2406         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = nummatts;
2407         // do most allocations as one merged chunk
2408         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));
2409         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2410         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2411         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2412         loadmodel->surfmesh.num_vertices = meshvertices;
2413         loadmodel->surfmesh.num_triangles = meshtriangles;
2414         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2415         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2416         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
2417         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2418         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2419         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
2420         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
2421         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
2422         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
2423         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2424         loadmodel->data_basebonepose = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2425         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2426         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2427         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2428         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2429
2430         for (i = 0;i < loadmodel->numskins;i++)
2431         {
2432                 loadmodel->skinscenes[i].firstframe = i;
2433                 loadmodel->skinscenes[i].framecount = 1;
2434                 loadmodel->skinscenes[i].loop = true;
2435                 loadmodel->skinscenes[i].framerate = 10;
2436         }
2437
2438         // create surfaces
2439         for (index = 0, i = 0;index < nummatts;index++)
2440         {
2441                 // since psk models do not have named sections, reuse their shader name as the section name
2442                 if (matts[index].name[0])
2443                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2444                 else
2445                         for (j = 0;j < loadmodel->numskins;j++)
2446                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + index + j * loadmodel->num_surfaces, NULL);
2447                 loadmodel->surfacelist[index] = index;
2448                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2449                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2450                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2451         }
2452
2453         // copy over the vertex locations and texcoords
2454         for (index = 0;index < numvtxw;index++)
2455         {
2456                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2457                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2458                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2459                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2460                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2461         }
2462
2463         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2464         for (index = 0;index < numfaces;index++)
2465                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2466         for (index = 0, i = 0;index < nummatts;index++)
2467         {
2468                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2469                 i += loadmodel->data_surfaces[index].num_triangles;
2470                 loadmodel->data_surfaces[index].num_triangles = 0;
2471         }
2472         for (index = 0;index < numfaces;index++)
2473         {
2474                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2475                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2476                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2477                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2478         }
2479
2480         // copy over the bones
2481         for (index = 0;index < numbones;index++)
2482         {
2483                 strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2484                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
2485                 if (loadmodel->data_bones[index].parent >= index)
2486                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
2487         }
2488
2489         // sort the psk point weights into the vertex weight tables
2490         // (which only accept up to 4 bones per vertex)
2491         for (index = 0;index < numvtxw;index++)
2492         {
2493                 int l;
2494                 float sum;
2495                 for (j = 0;j < numrawweights;j++)
2496                 {
2497                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
2498                         {
2499                                 int boneindex = rawweights[j].boneindex;
2500                                 float influence = rawweights[j].weight;
2501                                 for (l = 0;l < 4;l++)
2502                                 {
2503                                         if (loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] < influence)
2504                                         {
2505                                                 // move lower influence weights out of the way first
2506                                                 int l2;
2507                                                 for (l2 = 3;l2 > l;l2--)
2508                                                 {
2509                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2-1];
2510                                                         loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2-1];
2511                                                 }
2512                                                 // store the new weight
2513                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] = influence;
2514                                                 loadmodel->surfmesh.data_vertexweightindex4i[index*4+l] = boneindex;
2515                                                 break;
2516                                         }
2517                                 }
2518                         }
2519                 }
2520                 sum = 0;
2521                 for (l = 0;l < 4;l++)
2522                         sum += loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l];
2523                 if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2524                 {
2525                         float f = 1.0f / sum;
2526                         for (l = 0;l < 4;l++)
2527                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] *= f;
2528                 }
2529         }
2530
2531         // set up the animscenes based on the anims
2532         for (index = 0, i = 0;index < numanims;index++)
2533         {
2534                 for (j = 0;j < anims[index].numframes;j++, i++)
2535                 {
2536                         dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
2537                         loadmodel->animscenes[i].firstframe = i;
2538                         loadmodel->animscenes[i].framecount = 1;
2539                         loadmodel->animscenes[i].loop = true;
2540                         loadmodel->animscenes[i].framerate = 10;
2541                 }
2542         }
2543
2544         // load the poses from the animkeys
2545         for (index = 0;index < numanimkeys;index++)
2546         {
2547                 pskanimkeys_t *k = animkeys + index;
2548                 matrix4x4_t matrix;
2549                 Matrix4x4_FromOriginQuat(&matrix, k->origin[0], k->origin[1], k->origin[2], k->quat[0], k->quat[1], k->quat[2], k->quat[3]);
2550                 Matrix4x4_ToArray12FloatD3D(&matrix, loadmodel->data_poses + index*12);
2551         }
2552         Mod_FreeSkinFiles(skinfiles);
2553         Mem_Free(animfilebuffer);
2554
2555         // compute all the mesh information that was not loaded from the file
2556         // TODO: honor smoothing groups somehow?
2557         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2558         Mod_BuildBaseBonePoses();
2559         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
2560         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);
2561         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2562         Mod_Alias_CalculateBoundingBox();
2563
2564         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2565 }
2566