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 *basebonepose = Mem_Alloc(tempmempool, loadmodel->num_bones * sizeof(float[12]));
 419         float *in12f = loadmodel->data_poses;
 420         float *out12f = basebonepose;
 421         float *outinv12f = loadmodel->data_baseboneposeinverse;
 422         for (i = 0;i < loadmodel->num_bones;i++, in12f += 12, out12f += 12, outinv12f += 12)
 423         {
 424                 if (loadmodel->data_bones[i].parent >= 0)
 425                         R_ConcatTransforms(basebonepose + 12 * loadmodel->data_bones[i].parent, in12f, out12f);
 426                 else
 427                         for (k = 0;k < 12;k++)
 428                                 out12f[k] = in12f[k];
 429
 430                 // invert The Matrix
 431
 432                 // we only support uniform scaling, so assume the first row is enough
 433                 // (note the lack of sqrt here, because we're trying to undo the scaling,
 434                 // this means multiplying by the inverse scale twice - squaring it, which
 435                 // makes the sqrt a waste of time)
 436                 scale = 1.0 / (out12f[ 0] * out12f[ 0] + out12f[ 1] * out12f[ 1] + out12f[ 2] * out12f[ 2]);
 437
 438                 // invert the rotation by transposing and multiplying by the squared
 439                 // recipricol of the input matrix scale as described above
 440                 outinv12f[ 0] = (float)(out12f[ 0] * scale);
 441                 outinv12f[ 1] = (float)(out12f[ 4] * scale);
 442                 outinv12f[ 2] = (float)(out12f[ 8] * scale);
 443                 outinv12f[ 4] = (float)(out12f[ 1] * scale);
 444                 outinv12f[ 5] = (float)(out12f[ 5] * scale);
 445                 outinv12f[ 6] = (float)(out12f[ 9] * scale);
 446                 outinv12f[ 8] = (float)(out12f[ 2] * scale);
 447                 outinv12f[ 9] = (float)(out12f[ 6] * scale);
 448                 outinv12f[10] = (float)(out12f[10] * scale);
 449
 450                 // invert the translate
 451                 outinv12f[ 3] = -(out12f[ 3] * outinv12f[ 0] + out12f[ 7] * outinv12f[ 1] + out12f[11] * outinv12f[ 2]);
 452                 outinv12f[ 7] = -(out12f[ 3] * outinv12f[ 4] + out12f[ 7] * outinv12f[ 5] + out12f[11] * outinv12f[ 6]);
 453                 outinv12f[11] = -(out12f[ 3] * outinv12f[ 8] + out12f[ 7] * outinv12f[ 9] + out12f[11] * outinv12f[10]);
 454         }
 455         Mem_Free(basebonepose);
 456 }
 457
 458 static void Mod_Alias_CalculateBoundingBox(void)
 459 {
 460         int i, j;
 461         int vnum;
 462         qboolean firstvertex = true;
 463         float dist, yawradius, radius;
 464         float *v;
 465         float *vertex3f;
 466         frameblend_t frameblend[4];
 467         memset(frameblend, 0, sizeof(frameblend));
 468         frameblend[0].lerp = 1;
 469         vertex3f = Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3]));
 470         VectorClear(loadmodel->normalmins);
 471         VectorClear(loadmodel->normalmaxs);
 472         yawradius = 0;
 473         radius = 0;
 474         for (i = 0;i < loadmodel->numframes;i++)
 475         {
 476                 for (j = 0, frameblend[0].frame = loadmodel->animscenes[i].firstframe;j < loadmodel->animscenes[i].framecount;j++, frameblend[0].frame++)
 477                 {
 478                         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, vertex3f, NULL, NULL, NULL);
 479                         for (vnum = 0, v = vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
 480                         {
 481                                 if (firstvertex)
 482                                 {
 483                                         firstvertex = false;
 484                                         VectorCopy(v, loadmodel->normalmins);
 485                                         VectorCopy(v, loadmodel->normalmaxs);
 486                                 }
 487                                 else
 488                                 {
 489                                         if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
 490                                         if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
 491                                         if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
 492                                         if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
 493                                         if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
 494                                         if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
 495                                 }
 496                                 dist = v[0] * v[0] + v[1] * v[1];
 497                                 if (yawradius < dist)
 498                                         yawradius = dist;
 499                                 dist += v[2] * v[2];
 500                                 if (radius < dist)
 501                                         radius = dist;
 502                         }
 503                 }
 504         }
 505         Mem_Free(vertex3f);
 506         radius = sqrt(radius);
 507         yawradius = sqrt(yawradius);
 508         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
 509         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
 510         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 511         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 512         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
 513         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
 514         loadmodel->radius = radius;
 515         loadmodel->radius2 = radius * radius;
 516 }
 517
 518 static void Mod_Alias_Mesh_CompileFrameZero(void)
 519 {
 520         frameblend_t frameblend[4] = {{0, 1}, {0, 0}, {0, 0}, {0, 0}};
 521         loadmodel->surfmesh.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3][4]));
 522         loadmodel->surfmesh.data_svector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 3;
 523         loadmodel->surfmesh.data_tvector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 6;
 524         loadmodel->surfmesh.data_normal3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 9;
 525         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f);
 526 }
 527
 528 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)
 529 {
 530         int i;
 531         float segmentmins[3], segmentmaxs[3];
 532         frameblend_t frameblend[4];
 533         msurface_t *surface;
 534         static int maxvertices = 0;
 535         static float *vertex3f = NULL;
 536         memset(trace, 0, sizeof(*trace));
 537         trace->fraction = 1;
 538         trace->realfraction = 1;
 539         trace->hitsupercontentsmask = hitsupercontentsmask;
 540         memset(frameblend, 0, sizeof(frameblend));
 541         frameblend[0].frame = frame;
 542         frameblend[0].lerp = 1;
 543         if (maxvertices < model->surfmesh.num_vertices)
 544         {
 545                 if (vertex3f)
 546                         Z_Free(vertex3f);
 547                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 548                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 549         }
 550         if (VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
 551         {
 552                 // line trace
 553                 segmentmins[0] = min(start[0], end[0]) - 1;
 554                 segmentmins[1] = min(start[1], end[1]) - 1;
 555                 segmentmins[2] = min(start[2], end[2]) - 1;
 556                 segmentmaxs[0] = max(start[0], end[0]) + 1;
 557                 segmentmaxs[1] = max(start[1], end[1]) + 1;
 558                 segmentmaxs[2] = max(start[2], end[2]) + 1;
 559                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 560                 {
 561                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 562                         Collision_TraceLineTriangleMeshFloat(trace, start, end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 563                 }
 564         }
 565         else
 566         {
 567                 // box trace, performed as brush trace
 568                 colbrushf_t *thisbrush_start, *thisbrush_end;
 569                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
 570                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
 571                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
 572                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
 573                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
 574                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
 575                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
 576                 VectorAdd(start, boxmins, boxstartmins);
 577                 VectorAdd(start, boxmaxs, boxstartmaxs);
 578                 VectorAdd(end, boxmins, boxendmins);
 579                 VectorAdd(end, boxmaxs, boxendmaxs);
 580                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
 581                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
 582                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
 583                 {
 584                         if (maxvertices < model->surfmesh.num_vertices)
 585                         {
 586                                 if (vertex3f)
 587                                         Z_Free(vertex3f);
 588                                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
 589                                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
 590                         }
 591                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
 592                         Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
 593                 }
 594         }
 595 }
 596
 597 static void Mod_ConvertAliasVerts (int inverts, trivertx_t *v, trivertx_t *out, int *vertremap)
 598 {
 599         int i, j;
 600         for (i = 0;i < inverts;i++)
 601         {
 602                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
 603                         continue;
 604                 j = vertremap[i]; // not onseam
 605                 if (j >= 0)
 606                         out[j] = v[i];
 607                 j = vertremap[i+inverts]; // onseam
 608                 if (j >= 0)
 609                         out[j] = v[i];
 610         }
 611 }
 612
 613 static void Mod_MDL_LoadFrames (unsigned char* datapointer, int inverts, int *vertremap)
 614 {
 615         int i, f, pose, groupframes;
 616         float interval;
 617         daliasframetype_t *pframetype;
 618         daliasframe_t *pinframe;
 619         daliasgroup_t *group;
 620         daliasinterval_t *intervals;
 621         animscene_t *scene;
 622         pose = 0;
 623         scene = loadmodel->animscenes;
 624         for (f = 0;f < loadmodel->numframes;f++)
 625         {
 626                 pframetype = (daliasframetype_t *)datapointer;
 627                 datapointer += sizeof(daliasframetype_t);
 628                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 629                 {
 630                         // a single frame is still treated as a group
 631                         interval = 0.1f;
 632                         groupframes = 1;
 633                 }
 634                 else
 635                 {
 636                         // read group header
 637                         group = (daliasgroup_t *)datapointer;
 638                         datapointer += sizeof(daliasgroup_t);
 639                         groupframes = LittleLong (group->numframes);
 640
 641                         // intervals (time per frame)
 642                         intervals = (daliasinterval_t *)datapointer;
 643                         datapointer += sizeof(daliasinterval_t) * groupframes;
 644
 645                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 646                         if (interval < 0.01f)
 647                         {
 648                                 Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
 649                                 interval = 0.1f;
 650                         }
 651                 }
 652
 653                 // get scene name from first frame
 654                 pinframe = (daliasframe_t *)datapointer;
 655
 656                 strlcpy(scene->name, pinframe->name, sizeof(scene->name));
 657                 scene->firstframe = pose;
 658                 scene->framecount = groupframes;
 659                 scene->framerate = 1.0f / interval;
 660                 scene->loop = true;
 661                 scene++;
 662
 663                 // read frames
 664                 for (i = 0;i < groupframes;i++)
 665                 {
 666                         pinframe = (daliasframe_t *)datapointer;
 667                         datapointer += sizeof(daliasframe_t);
 668                         Mod_ConvertAliasVerts(inverts, (trivertx_t *)datapointer, loadmodel->surfmesh.data_morphmdlvertex + pose * loadmodel->surfmesh.num_vertices, vertremap);
 669                         datapointer += sizeof(trivertx_t) * inverts;
 670                         pose++;
 671                 }
 672         }
 673 }
 674
 675 static void Mod_BuildAliasSkinFromSkinFrame(texture_t *texture, skinframe_t *skinframe)
 676 {
 677         // hack
 678         if (!skinframe)
 679                 skinframe = R_SkinFrame_LoadMissing();
 680         texture->currentframe = texture;
 681         texture->numskinframes = 1;
 682         texture->skinframerate = 1;
 683         texture->skinframes[0] = skinframe;
 684         texture->currentskinframe = skinframe;
 685
 686         texture->basematerialflags = MATERIALFLAG_WALL;
 687         if (texture->currentskinframe->fog)
 688                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
 689         texture->currentmaterialflags = texture->basematerialflags;
 690 }
 691
 692 static void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, char *meshname, char *shadername)
 693 {
 694         int i;
 695         skinfileitem_t *skinfileitem;
 696         skinframe_t *tempskinframe;
 697         if (skinfile)
 698         {
 699                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
 700                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
 701                 {
 702                         memset(skin, 0, sizeof(*skin));
 703                         Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
 704                         // don't render unmentioned meshes
 705                         skin->basematerialflags = skin->currentmaterialflags = 0;
 706                         // see if a mesh
 707                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
 708                         {
 709                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
 710                                 if (!strcmp(skinfileitem->name, meshname) && strcmp(skinfileitem->replacement, "common/nodraw") && strcmp(skinfileitem->replacement, "textures/common/nodraw"))
 711                                 {
 712                                         tempskinframe = R_SkinFrame_LoadExternal(skinfileitem->replacement, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
 713                                         if (!tempskinframe)
 714                                                 if (cls.state != ca_dedicated)
 715                                                         Con_DPrintf("mesh \"%s\": failed to load skin #%i \"%s\"\n", meshname, i, skinfileitem->replacement);
 716                                         Mod_BuildAliasSkinFromSkinFrame(skin, tempskinframe);
 717                                         break;
 718                                 }
 719                         }
 720                 }
 721         }
 722         else
 723         {
 724                 tempskinframe = R_SkinFrame_LoadExternal(shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
 725                 if (!tempskinframe)
 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                                 tempskinframe = R_SkinFrame_LoadExternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP);
 994                                 if (!tempskinframe)
 995                                         tempskinframe = R_SkinFrame_LoadInternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_PICMIP, true, r_fullbrights.integer, (unsigned char *)datapointer, skinwidth, skinheight, 8, NULL, NULL);
 996                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
 997                                 datapointer += skinwidth * skinheight;
 998                                 totalskins++;
 999                         }
1000                 }
1001                 // check for skins that don't exist in the model, but do exist as external images
1002                 // (this was added because yummyluv kept pestering me about support for it)
1003                 while ((tempskinframe = R_SkinFrame_LoadExternal(va("%s_%i", loadmodel->name, loadmodel->numskins), (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP)))
1004                 {
1005                         // expand the arrays to make room
1006                         tempskinscenes = loadmodel->skinscenes;
1007                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
1008                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
1009                         Mem_Free(tempskinscenes);
1010
1011                         tempaliasskins = loadmodel->data_textures;
1012                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
1013                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1014                         Mem_Free(tempaliasskins);
1015
1016                         // store the info about the new skin
1017                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
1018                         strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
1019                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
1020                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
1021                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
1022                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
1023
1024                         //increase skin counts
1025                         loadmodel->numskins++;
1026                         totalskins++;
1027
1028                         // fix up the pointers since they are pointing at the old textures array
1029                         // FIXME: this is a hack!
1030                         for (j = 0;j < loadmodel->numskins * loadmodel->num_surfaces;j++)
1031                                 loadmodel->data_textures[j].currentframe = &loadmodel->data_textures[j];
1032                 }
1033         }
1034
1035         surface = loadmodel->data_surfaces;
1036         surface->texture = loadmodel->data_textures;
1037         surface->num_firsttriangle = 0;
1038         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1039         surface->num_firstvertex = 0;
1040         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1041
1042         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1043 }
1044
1045 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
1046 {
1047         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
1048         float iskinwidth, iskinheight;
1049         unsigned char *data;
1050         msurface_t *surface;
1051         md2_t *pinmodel;
1052         unsigned char *base, *datapointer;
1053         md2frame_t *pinframe;
1054         char *inskin;
1055         md2triangle_t *intri;
1056         unsigned short *inst;
1057         struct md2verthash_s
1058         {
1059                 struct md2verthash_s *next;
1060                 unsigned short xyz;
1061                 unsigned short st;
1062         }
1063         *hash, **md2verthash, *md2verthashdata;
1064         skinframe_t *tempskinframe;
1065         skinfile_t *skinfiles;
1066
1067         pinmodel = (md2_t *)buffer;
1068         base = (unsigned char *)buffer;
1069
1070         version = LittleLong (pinmodel->version);
1071         if (version != MD2ALIAS_VERSION)
1072                 Host_Error ("%s has wrong version number (%i should be %i)",
1073                         loadmodel->name, version, MD2ALIAS_VERSION);
1074
1075         loadmodel->type = mod_alias;
1076         loadmodel->DrawSky = NULL;
1077         loadmodel->Draw = R_Q1BSP_Draw;
1078         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1079         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1080         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1081         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1082
1083         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
1084                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
1085         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
1086                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
1087         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
1088                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
1089         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
1090                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
1091
1092         end = LittleLong(pinmodel->ofs_end);
1093         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
1094                 Host_Error ("%s is not a valid model", loadmodel->name);
1095         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
1096                 Host_Error ("%s is not a valid model", loadmodel->name);
1097         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
1098                 Host_Error ("%s is not a valid model", loadmodel->name);
1099         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
1100                 Host_Error ("%s is not a valid model", loadmodel->name);
1101         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
1102                 Host_Error ("%s is not a valid model", loadmodel->name);
1103
1104         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1105         numxyz = LittleLong(pinmodel->num_xyz);
1106         numst = LittleLong(pinmodel->num_st);
1107         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1108         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1109         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1110         skinwidth = LittleLong(pinmodel->skinwidth);
1111         skinheight = LittleLong(pinmodel->skinheight);
1112         iskinwidth = 1.0f / skinwidth;
1113         iskinheight = 1.0f / skinheight;
1114
1115         loadmodel->num_surfaces = 1;
1116         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1117         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]));
1118         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1119         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1120         loadmodel->surfacelist[0] = 0;
1121         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1122         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1123         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1124         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1125
1126         loadmodel->flags = 0; // there are no MD2 flags
1127         loadmodel->synctype = ST_RAND;
1128
1129         // load the skins
1130         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1131         skinfiles = Mod_LoadSkinFiles();
1132         if (skinfiles)
1133         {
1134                 loadmodel->num_textures = loadmodel->num_surfaces;
1135                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1136                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1137                 Mod_FreeSkinFiles(skinfiles);
1138         }
1139         else if (loadmodel->numskins)
1140         {
1141                 // skins found (most likely not a player model)
1142                 loadmodel->num_textures = loadmodel->num_surfaces;
1143                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1144                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1145                 {
1146                         tempskinframe = R_SkinFrame_LoadExternal(inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
1147                         if (!tempskinframe)
1148                                 Con_Printf("%s is missing skin \"%s\"\n", loadmodel->name, inskin);
1149                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, tempskinframe);
1150                 }
1151         }
1152         else
1153         {
1154                 // no skins (most likely a player model)
1155                 loadmodel->numskins = 1;
1156                 loadmodel->num_textures = loadmodel->num_surfaces;
1157                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1158                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
1159         }
1160
1161         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1162         for (i = 0;i < loadmodel->numskins;i++)
1163         {
1164                 loadmodel->skinscenes[i].firstframe = i;
1165                 loadmodel->skinscenes[i].framecount = 1;
1166                 loadmodel->skinscenes[i].loop = true;
1167                 loadmodel->skinscenes[i].framerate = 10;
1168         }
1169
1170         // load the triangles and stvert data
1171         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1172         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1173         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1174         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1175         // swap the triangle list
1176         loadmodel->surfmesh.num_vertices = 0;
1177         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1178         {
1179                 for (j = 0;j < 3;j++)
1180                 {
1181                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1182                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1183                         if (xyz >= numxyz)
1184                         {
1185                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1186                                 xyz = 0;
1187                         }
1188                         if (st >= numst)
1189                         {
1190                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1191                                 st = 0;
1192                         }
1193                         hashindex = (xyz * 256 + st) & 65535;
1194                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1195                                 if (hash->xyz == xyz && hash->st == st)
1196                                         break;
1197                         if (hash == NULL)
1198                         {
1199                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1200                                 hash->xyz = xyz;
1201                                 hash->st = st;
1202                                 hash->next = md2verthash[hashindex];
1203                                 md2verthash[hashindex] = hash;
1204                         }
1205                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1206                 }
1207         }
1208
1209         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1210         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));
1211         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1212         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1213         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1214         {
1215                 int sts, stt;
1216                 hash = md2verthashdata + i;
1217                 vertremap[i] = hash->xyz;
1218                 sts = LittleShort(inst[hash->st*2+0]);
1219                 stt = LittleShort(inst[hash->st*2+1]);
1220                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1221                 {
1222                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1223                         sts = 0;
1224                         stt = 0;
1225                 }
1226                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1227                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1228         }
1229
1230         Mem_Free(md2verthash);
1231         Mem_Free(md2verthashdata);
1232
1233         // load the frames
1234         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1235         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1236         {
1237                 int k;
1238                 trivertx_t *v;
1239                 trivertx_t *out;
1240                 pinframe = (md2frame_t *)datapointer;
1241                 datapointer += sizeof(md2frame_t);
1242                 // store the frame scale/translate into the appropriate array
1243                 for (j = 0;j < 3;j++)
1244                 {
1245                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1246                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1247                 }
1248                 // convert the vertices
1249                 v = (trivertx_t *)datapointer;
1250                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1251                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1252                         out[k] = v[vertremap[k]];
1253                 datapointer += numxyz * sizeof(trivertx_t);
1254
1255                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1256                 loadmodel->animscenes[i].firstframe = i;
1257                 loadmodel->animscenes[i].framecount = 1;
1258                 loadmodel->animscenes[i].framerate = 10;
1259                 loadmodel->animscenes[i].loop = true;
1260         }
1261
1262         Mem_Free(vertremap);
1263
1264         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1265         Mod_Alias_CalculateBoundingBox();
1266         Mod_Alias_Mesh_CompileFrameZero();
1267
1268         surface = loadmodel->data_surfaces;
1269         surface->texture = loadmodel->data_textures;
1270         surface->num_firsttriangle = 0;
1271         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1272         surface->num_firstvertex = 0;
1273         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1274
1275         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1276 }
1277
1278 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1279 {
1280         int i, j, k, version, meshvertices, meshtriangles;
1281         unsigned char *data;
1282         msurface_t *surface;
1283         md3modelheader_t *pinmodel;
1284         md3frameinfo_t *pinframe;
1285         md3mesh_t *pinmesh;
1286         md3tag_t *pintag;
1287         skinfile_t *skinfiles;
1288
1289         pinmodel = (md3modelheader_t *)buffer;
1290
1291         if (memcmp(pinmodel->identifier, "IDP3", 4))
1292                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1293         version = LittleLong (pinmodel->version);
1294         if (version != MD3VERSION)
1295                 Host_Error ("%s has wrong version number (%i should be %i)",
1296                         loadmodel->name, version, MD3VERSION);
1297
1298         skinfiles = Mod_LoadSkinFiles();
1299         if (loadmodel->numskins < 1)
1300                 loadmodel->numskins = 1;
1301
1302         loadmodel->type = mod_alias;
1303         loadmodel->DrawSky = NULL;
1304         loadmodel->Draw = R_Q1BSP_Draw;
1305         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1306         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1307         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1308         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1309         loadmodel->flags = LittleLong(pinmodel->flags);
1310         loadmodel->synctype = ST_RAND;
1311
1312         // set up some global info about the model
1313         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1314         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1315
1316         // make skinscenes for the skins (no groups)
1317         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1318         for (i = 0;i < loadmodel->numskins;i++)
1319         {
1320                 loadmodel->skinscenes[i].firstframe = i;
1321                 loadmodel->skinscenes[i].framecount = 1;
1322                 loadmodel->skinscenes[i].loop = true;
1323                 loadmodel->skinscenes[i].framerate = 10;
1324         }
1325
1326         // load frameinfo
1327         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1328         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1329         {
1330                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1331                 loadmodel->animscenes[i].firstframe = i;
1332                 loadmodel->animscenes[i].framecount = 1;
1333                 loadmodel->animscenes[i].framerate = 10;
1334                 loadmodel->animscenes[i].loop = true;
1335         }
1336
1337         // load tags
1338         loadmodel->num_tagframes = loadmodel->numframes;
1339         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1340         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1341         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1342         {
1343                 strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1344                 for (j = 0;j < 9;j++)
1345                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1346                 for (j = 0;j < 3;j++)
1347                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1348                 //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);
1349         }
1350
1351         // load meshes
1352         meshvertices = 0;
1353         meshtriangles = 0;
1354         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)))
1355         {
1356                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1357                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1358                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1359                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1360                 meshvertices += LittleLong(pinmesh->num_vertices);
1361                 meshtriangles += LittleLong(pinmesh->num_triangles);
1362         }
1363
1364         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1365         loadmodel->num_textures = loadmodel->num_surfaces;
1366         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));
1367         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1368         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1369         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1370         loadmodel->surfmesh.num_vertices = meshvertices;
1371         loadmodel->surfmesh.num_triangles = meshtriangles;
1372         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1373         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1374         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1375         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1376         loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
1377
1378         meshvertices = 0;
1379         meshtriangles = 0;
1380         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)))
1381         {
1382                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1383                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1384                 loadmodel->surfacelist[i] = i;
1385                 surface = loadmodel->data_surfaces + i;
1386                 surface->texture = loadmodel->data_textures + i;
1387                 surface->num_firsttriangle = meshtriangles;
1388                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1389                 surface->num_firstvertex = meshvertices;
1390                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1391                 meshvertices += surface->num_vertices;
1392                 meshtriangles += surface->num_triangles;
1393
1394                 for (j = 0;j < surface->num_triangles * 3;j++)
1395                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1396                 for (j = 0;j < surface->num_vertices;j++)
1397                 {
1398                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1399                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1400                 }
1401                 for (j = 0;j < loadmodel->numframes;j++)
1402                 {
1403                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1404                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1405                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1406                         {
1407                                 out->origin[0] = LittleShort(in->origin[0]);
1408                                 out->origin[1] = LittleShort(in->origin[1]);
1409                                 out->origin[2] = LittleShort(in->origin[2]);
1410                                 out->pitch = in->pitch;
1411                                 out->yaw = in->yaw;
1412                         }
1413                 }
1414
1415                 if (LittleLong(pinmesh->num_shaders) >= 1)
1416                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name);
1417                 else
1418                         for (j = 0;j < loadmodel->numskins;j++)
1419                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1420
1421                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1422         }
1423         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1424         Mod_Alias_Mesh_CompileFrameZero();
1425         Mod_Alias_CalculateBoundingBox();
1426         Mod_FreeSkinFiles(skinfiles);
1427
1428         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1429 }
1430
1431 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1432 {
1433         zymtype1header_t *pinmodel, *pheader;
1434         unsigned char *pbase;
1435         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1436         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose;
1437         zymvertex_t *verts, *vertdata;
1438         zymscene_t *scene;
1439         zymbone_t *bone;
1440         char *shadername;
1441         skinfile_t *skinfiles;
1442         unsigned char *data;
1443         msurface_t *surface;
1444
1445         pinmodel = (zymtype1header_t *)buffer;
1446         pbase = (unsigned char *)buffer;
1447         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1448                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model", loadmodel->name);
1449         if (BigLong(pinmodel->type) != 1)
1450                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1451
1452         loadmodel->type = mod_alias;
1453         loadmodel->flags = 0; // there are no flags on zym models
1454         loadmodel->synctype = ST_RAND;
1455
1456         // byteswap header
1457         pheader = pinmodel;
1458         pheader->type = BigLong(pinmodel->type);
1459         pheader->filesize = BigLong(pinmodel->filesize);
1460         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1461         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1462         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1463         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1464         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1465         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1466         pheader->radius = BigFloat(pinmodel->radius);
1467         pheader->numverts = BigLong(pinmodel->numverts);
1468         pheader->numtris = BigLong(pinmodel->numtris);
1469         pheader->numshaders = BigLong(pinmodel->numshaders);
1470         pheader->numbones = BigLong(pinmodel->numbones);
1471         pheader->numscenes = BigLong(pinmodel->numscenes);
1472         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1473         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1474         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1475         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1476         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1477         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1478         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1479         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1480         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1481         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1482         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1483         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1484         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1485         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1486         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1487         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1488         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1489         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1490
1491         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1492         {
1493                 Con_Printf("%s has no geometry\n", loadmodel->name);
1494                 return;
1495         }
1496         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1497         {
1498                 Con_Printf("%s has no animations\n", loadmodel->name);
1499                 return;
1500         }
1501
1502         loadmodel->DrawSky = NULL;
1503         loadmodel->Draw = R_Q1BSP_Draw;
1504         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1505         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1506         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1507         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1508
1509         loadmodel->numframes = pheader->numscenes;
1510         loadmodel->num_surfaces = pheader->numshaders;
1511
1512         skinfiles = Mod_LoadSkinFiles();
1513         if (loadmodel->numskins < 1)
1514                 loadmodel->numskins = 1;
1515
1516         // make skinscenes for the skins (no groups)
1517         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1518         for (i = 0;i < loadmodel->numskins;i++)
1519         {
1520                 loadmodel->skinscenes[i].firstframe = i;
1521                 loadmodel->skinscenes[i].framecount = 1;
1522                 loadmodel->skinscenes[i].loop = true;
1523                 loadmodel->skinscenes[i].framerate = 10;
1524         }
1525
1526         // model bbox
1527         modelradius = pheader->radius;
1528         for (i = 0;i < 3;i++)
1529         {
1530                 loadmodel->normalmins[i] = pheader->mins[i];
1531                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1532                 loadmodel->rotatedmins[i] = -modelradius;
1533                 loadmodel->rotatedmaxs[i] = modelradius;
1534         }
1535         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1536         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1537         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1538         if (loadmodel->yawmaxs[0] > modelradius)
1539                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1540         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1541         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1542         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1543         loadmodel->radius = modelradius;
1544         loadmodel->radius2 = modelradius * modelradius;
1545
1546         // go through the lumps, swapping things
1547
1548         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1549         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1550         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1551         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1552         for (i = 0;i < pheader->numscenes;i++)
1553         {
1554                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1555                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1556                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1557                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1558                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1559                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1560                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1561                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1562                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1563                 if (loadmodel->animscenes[i].framerate < 0)
1564                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1565                 scene++;
1566         }
1567
1568         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1569         loadmodel->num_bones = pheader->numbones;
1570         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(aliasbone_t));
1571         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1572         for (i = 0;i < pheader->numbones;i++)
1573         {
1574                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1575                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1576                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1577                 if (loadmodel->data_bones[i].parent >= i)
1578                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1579         }
1580
1581         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1582         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1583         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1584         for (i = 0;i < pheader->numverts;i++)
1585         {
1586                 vertbonecounts[i] = BigLong(bonecount[i]);
1587                 if (vertbonecounts[i] != 1)
1588                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1589         }
1590
1591         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]);
1592
1593         meshvertices = pheader->numverts;
1594         meshtriangles = pheader->numtris;
1595
1596         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1597         loadmodel->num_textures = loadmodel->num_surfaces;
1598         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[12]) + loadmodel->num_bones * sizeof(float[12]));
1599         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1600         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1601         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1602         loadmodel->surfmesh.num_vertices = meshvertices;
1603         loadmodel->surfmesh.num_triangles = meshtriangles;
1604         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1605         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1606         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1607         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1608         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1609         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1610         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1611         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1612         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1613         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1614         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1615
1616         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1617         poses = (float *) (pheader->lump_poses.start + pbase);
1618         for (i = 0;i < pheader->lump_poses.length / 4;i++)
1619                 loadmodel->data_poses[i] = BigFloat(poses[i]);
1620
1621         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1622         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1623         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
1624         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1625         // (converting from weight-blending skeletal animation to
1626         //  deformation-based skeletal animation)
1627         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1628         for (i = 0;i < loadmodel->num_bones;i++)
1629         {
1630                 const float *m = loadmodel->data_poses + i * 12;
1631                 if (loadmodel->data_bones[i].parent >= 0)
1632                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1633                 else
1634                         for (k = 0;k < 12;k++)
1635                                 bonepose[12*i+k] = m[k];
1636         }
1637         for (j = 0;j < pheader->numverts;j++)
1638         {
1639                 // this format really should have had a per vertexweight weight value...
1640                 // but since it does not, the weighting is completely ignored and
1641                 // only one weight is allowed per vertex
1642                 int boneindex = BigLong(vertdata[j].bonenum);
1643                 const float *m = bonepose + 12 * boneindex;
1644                 float relativeorigin[3];
1645                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
1646                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
1647                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
1648                 // transform the vertex bone weight into the base mesh
1649                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
1650                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
1651                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
1652                 // store the weight as the primary weight on this vertex
1653                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1654                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = 1;
1655         }
1656         Z_Free(bonepose);
1657         // normals and tangents are calculated after elements are loaded
1658
1659         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1660         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
1661         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
1662         for (i = 0;i < pheader->numverts;i++)
1663         {
1664                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1665                 // flip T coordinate for OpenGL
1666                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1667         }
1668
1669         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1670         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1671         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1672
1673         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1674         //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)
1675         // byteswap, validate, and swap winding order of tris
1676         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1677         if (pheader->lump_render.length != count)
1678                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
1679         renderlist = (int *) (pheader->lump_render.start + pbase);
1680         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
1681         meshtriangles = 0;
1682         for (i = 0;i < loadmodel->num_surfaces;i++)
1683         {
1684                 int firstvertex, lastvertex;
1685                 if (renderlist >= renderlistend)
1686                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1687                 count = BigLong(*renderlist);renderlist++;
1688                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
1689                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1690
1691                 loadmodel->surfacelist[i] = i;
1692                 surface = loadmodel->data_surfaces + i;
1693                 surface->texture = loadmodel->data_textures + i;
1694                 surface->num_firsttriangle = meshtriangles;
1695                 surface->num_triangles = count;
1696                 meshtriangles += surface->num_triangles;
1697
1698                 // load the elements
1699                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1700                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
1701                 {
1702                         outelements[j*3+2] = BigLong(renderlist[0]);
1703                         outelements[j*3+1] = BigLong(renderlist[1]);
1704                         outelements[j*3+0] = BigLong(renderlist[2]);
1705                 }
1706                 // validate the elements and find the used vertex range
1707                 firstvertex = meshvertices;
1708                 lastvertex = 0;
1709                 for (j = 0;j < surface->num_triangles * 3;j++)
1710                 {
1711                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
1712                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
1713                         firstvertex = min(firstvertex, outelements[j]);
1714                         lastvertex = max(lastvertex, outelements[j]);
1715                 }
1716                 surface->num_firstvertex = firstvertex;
1717                 surface->num_vertices = lastvertex + 1 - firstvertex;
1718
1719                 // since zym models do not have named sections, reuse their shader
1720                 // name as the section name
1721                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
1722                 if (shadername[0])
1723                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
1724                 else
1725                         for (j = 0;j < loadmodel->numskins;j++)
1726                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1727         }
1728         Mod_FreeSkinFiles(skinfiles);
1729         Mem_Free(vertbonecounts);
1730         Mem_Free(verts);
1731
1732         // compute all the mesh information that was not loaded from the file
1733         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
1734         Mod_BuildBaseBonePoses();
1735         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
1736         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);
1737         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1738
1739         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1740 }
1741
1742 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1743 {
1744         dpmheader_t *pheader;
1745         dpmframe_t *frame;
1746         dpmbone_t *bone;
1747         dpmmesh_t *dpmmesh;
1748         unsigned char *pbase;
1749         int i, j, k, meshvertices, meshtriangles;
1750         skinfile_t *skinfiles;
1751         unsigned char *data;
1752         float *bonepose;
1753
1754         pheader = (dpmheader_t *)buffer;
1755         pbase = (unsigned char *)buffer;
1756         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
1757                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model", loadmodel->name);
1758         if (BigLong(pheader->type) != 2)
1759                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1760
1761         loadmodel->type = mod_alias;
1762         loadmodel->flags = 0; // there are no flags on zym models
1763         loadmodel->synctype = ST_RAND;
1764
1765         // byteswap header
1766         pheader->type = BigLong(pheader->type);
1767         pheader->filesize = BigLong(pheader->filesize);
1768         pheader->mins[0] = BigFloat(pheader->mins[0]);
1769         pheader->mins[1] = BigFloat(pheader->mins[1]);
1770         pheader->mins[2] = BigFloat(pheader->mins[2]);
1771         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
1772         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
1773         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
1774         pheader->yawradius = BigFloat(pheader->yawradius);
1775         pheader->allradius = BigFloat(pheader->allradius);
1776         pheader->num_bones = BigLong(pheader->num_bones);
1777         pheader->num_meshs = BigLong(pheader->num_meshs);
1778         pheader->num_frames = BigLong(pheader->num_frames);
1779         pheader->ofs_bones = BigLong(pheader->ofs_bones);
1780         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
1781         pheader->ofs_frames = BigLong(pheader->ofs_frames);
1782
1783         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
1784         {
1785                 Con_Printf("%s has no geometry\n", loadmodel->name);
1786                 return;
1787         }
1788         if (pheader->num_frames < 1)
1789         {
1790                 Con_Printf("%s has no frames\n", loadmodel->name);
1791                 return;
1792         }
1793
1794         loadmodel->DrawSky = NULL;
1795         loadmodel->Draw = R_Q1BSP_Draw;
1796         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1797         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1798         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1799         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1800
1801         // model bbox
1802         for (i = 0;i < 3;i++)
1803         {
1804                 loadmodel->normalmins[i] = pheader->mins[i];
1805                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1806                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
1807                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
1808                 loadmodel->rotatedmins[i] = -pheader->allradius;
1809                 loadmodel->rotatedmaxs[i] = pheader->allradius;
1810         }
1811         loadmodel->radius = pheader->allradius;
1812         loadmodel->radius2 = pheader->allradius * pheader->allradius;
1813
1814         // load external .skin files if present
1815         skinfiles = Mod_LoadSkinFiles();
1816         if (loadmodel->numskins < 1)
1817                 loadmodel->numskins = 1;
1818
1819         meshvertices = 0;
1820         meshtriangles = 0;
1821
1822         // gather combined statistics from the meshes
1823         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1824         for (i = 0;i < (int)pheader->num_meshs;i++)
1825         {
1826                 int numverts = BigLong(dpmmesh->num_verts);
1827                 meshvertices += numverts;;
1828                 meshtriangles += BigLong(dpmmesh->num_tris);
1829                 dpmmesh++;
1830         }
1831
1832         loadmodel->numframes = pheader->num_frames;
1833         loadmodel->num_bones = pheader->num_bones;
1834         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
1835         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = pheader->num_meshs;
1836         // do most allocations as one merged chunk
1837         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[12]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
1838         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1839         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1840         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1841         loadmodel->surfmesh.num_vertices = meshvertices;
1842         loadmodel->surfmesh.num_triangles = meshtriangles;
1843         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1844         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1845         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1846         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1847         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1848         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1849         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1850         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1851         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1852         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1853         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1854         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
1855         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
1856         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1857
1858         for (i = 0;i < loadmodel->numskins;i++)
1859         {
1860                 loadmodel->skinscenes[i].firstframe = i;
1861                 loadmodel->skinscenes[i].framecount = 1;
1862                 loadmodel->skinscenes[i].loop = true;
1863                 loadmodel->skinscenes[i].framerate = 10;
1864         }
1865
1866         // load the bone info
1867         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
1868         for (i = 0;i < loadmodel->num_bones;i++)
1869         {
1870                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1871                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1872                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1873                 if (loadmodel->data_bones[i].parent >= i)
1874                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1875         }
1876
1877         // load the frames
1878         frame = (dpmframe_t *) (pbase + pheader->ofs_frames);
1879         for (i = 0;i < loadmodel->numframes;i++)
1880         {
1881                 const float *poses;
1882                 memcpy(loadmodel->animscenes[i].name, frame->name, sizeof(frame->name));
1883                 loadmodel->animscenes[i].firstframe = i;
1884                 loadmodel->animscenes[i].framecount = 1;
1885                 loadmodel->animscenes[i].loop = true;
1886                 loadmodel->animscenes[i].framerate = 10;
1887                 // load the bone poses for this frame
1888                 poses = (float *) (pbase + BigLong(frame->ofs_bonepositions));
1889                 for (j = 0;j < loadmodel->num_bones*12;j++)
1890                         loadmodel->data_poses[i * loadmodel->num_bones*12 + j] = BigFloat(poses[j]);
1891                 // stuff not processed here: mins, maxs, yawradius, allradius
1892                 frame++;
1893         }
1894
1895         // load the meshes now
1896         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1897         meshvertices = 0;
1898         meshtriangles = 0;
1899         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1900         // (converting from weight-blending skeletal animation to
1901         //  deformation-based skeletal animation)
1902         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1903         for (i = 0;i < loadmodel->num_bones;i++)
1904         {
1905                 const float *m = loadmodel->data_poses + i * 12;
1906                 if (loadmodel->data_bones[i].parent >= 0)
1907                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1908                 else
1909                         for (k = 0;k < 12;k++)
1910                                 bonepose[12*i+k] = m[k];
1911         }
1912         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
1913         {
1914                 const int *inelements;
1915                 int *outelements;
1916                 const float *intexcoord;
1917                 msurface_t *surface;
1918
1919                 loadmodel->surfacelist[i] = i;
1920                 surface = loadmodel->data_surfaces + i;
1921                 surface->texture = loadmodel->data_textures + i;
1922                 surface->num_firsttriangle = meshtriangles;
1923                 surface->num_triangles = BigLong(dpmmesh->num_tris);
1924                 surface->num_firstvertex = meshvertices;
1925                 surface->num_vertices = BigLong(dpmmesh->num_verts);
1926                 meshvertices += surface->num_vertices;
1927                 meshtriangles += surface->num_triangles;
1928
1929                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
1930                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1931                 for (j = 0;j < surface->num_triangles;j++)
1932                 {
1933                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
1934                         outelements[0] = surface->num_firstvertex + BigLong(inelements[2]);
1935                         outelements[1] = surface->num_firstvertex + BigLong(inelements[1]);
1936                         outelements[2] = surface->num_firstvertex + BigLong(inelements[0]);
1937                         inelements += 3;
1938                         outelements += 3;
1939                 }
1940
1941                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
1942                 for (j = 0;j < surface->num_vertices*2;j++)
1943                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
1944
1945                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
1946                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
1947                 {
1948                         float sum;
1949                         int l;
1950                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
1951                         data += sizeof(dpmvertex_t);
1952                         for (k = 0;k < numweights;k++)
1953                         {
1954                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
1955                                 int boneindex = BigLong(vert->bonenum);
1956                                 const float *m = bonepose + 12 * boneindex;
1957                                 float influence = BigFloat(vert->influence);
1958                                 float relativeorigin[3], relativenormal[3];
1959                                 relativeorigin[0] = BigFloat(vert->origin[0]);
1960                                 relativeorigin[1] = BigFloat(vert->origin[1]);
1961                                 relativeorigin[2] = BigFloat(vert->origin[2]);
1962                                 relativenormal[0] = BigFloat(vert->normal[0]);
1963                                 relativenormal[1] = BigFloat(vert->normal[1]);
1964                                 relativenormal[2] = BigFloat(vert->normal[2]);
1965                                 // blend the vertex bone weights into the base mesh
1966                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
1967                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
1968                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
1969                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
1970                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
1971                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
1972                                 if (!k)
1973                                 {
1974                                         // store the first (and often only) weight
1975                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = influence;
1976                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1977                                 }
1978                                 else
1979                                 {
1980                                         // sort the new weight into this vertex's weight table
1981                                         // (which only accepts up to 4 bones per vertex)
1982                                         for (l = 0;l < 4;l++)
1983                                         {
1984                                                 if (loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] < influence)
1985                                                 {
1986                                                         // move weaker influence weights out of the way first
1987                                                         int l2;
1988                                                         for (l2 = 3;l2 > l;l2--)
1989                                                         {
1990                                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2-1];
1991                                                                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2-1];
1992                                                         }
1993                                                         // store the new weight
1994                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] = influence;
1995                                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+l] = boneindex;
1996                                                         break;
1997                                                 }
1998                                         }
1999                                 }
2000                                 data += sizeof(dpmbonevert_t);
2001                         }
2002                         sum = 0;
2003                         for (l = 0;l < 4;l++)
2004                                 sum += loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l];
2005                         if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2006                         {
2007                                 float f = 1.0f / sum;
2008                                 for (l = 0;l < 4;l++)
2009                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] *= f;
2010                         }
2011                 }
2012
2013                 // since dpm models do not have named sections, reuse their shader name as the section name
2014                 if (dpmmesh->shadername[0])
2015                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
2016                 else
2017                         for (j = 0;j < loadmodel->numskins;j++)
2018                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
2019
2020                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
2021         }
2022         Z_Free(bonepose);
2023         Mod_FreeSkinFiles(skinfiles);
2024
2025         // compute all the mesh information that was not loaded from the file
2026         Mod_BuildBaseBonePoses();
2027         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);
2028         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2029
2030         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2031 }
2032
2033 // no idea why PSK/PSA files contain weird quaternions but they do...
2034 #define PSKQUATNEGATIONS
2035 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2036 {
2037         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
2038         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
2039         fs_offset_t filesize;
2040         pskpnts_t *pnts;
2041         pskvtxw_t *vtxw;
2042         pskface_t *faces;
2043         pskmatt_t *matts;
2044         pskboneinfo_t *bones;
2045         pskrawweights_t *rawweights;
2046         pskboneinfo_t *animbones;
2047         pskaniminfo_t *anims;
2048         pskanimkeys_t *animkeys;
2049         void *animfilebuffer, *animbuffer, *animbufferend;
2050         unsigned char *data;
2051         pskchunk_t *pchunk;
2052         skinfile_t *skinfiles;
2053         char animname[MAX_QPATH];
2054
2055         pchunk = (pskchunk_t *)buffer;
2056         if (strcmp(pchunk->id, "ACTRHEAD"))
2057                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2058
2059         loadmodel->type = mod_alias;
2060         loadmodel->DrawSky = NULL;
2061         loadmodel->Draw = R_Q1BSP_Draw;
2062         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
2063         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
2064         loadmodel->DrawLight = R_Q1BSP_DrawLight;
2065         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2066         loadmodel->flags = 0; // there are no flags on zym models
2067         loadmodel->synctype = ST_RAND;
2068
2069         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2070         strlcat(animname, ".psa", sizeof(animname));
2071         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2072         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2073         if (animbuffer == NULL)
2074                 Host_Error("%s: can't find .psa file (%s)", loadmodel->name, animname);
2075
2076         numpnts = 0;
2077         pnts = NULL;
2078         numvtxw = 0;
2079         vtxw = NULL;
2080         numfaces = 0;
2081         faces = NULL;
2082         nummatts = 0;
2083         matts = NULL;
2084         numbones = 0;
2085         bones = NULL;
2086         numrawweights = 0;
2087         rawweights = NULL;
2088         numanims = 0;
2089         anims = NULL;
2090         numanimkeys = 0;
2091         animkeys = NULL;
2092
2093         while (buffer < bufferend)
2094         {
2095                 pchunk = (pskchunk_t *)buffer;
2096                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2097                 version = LittleLong(pchunk->version);
2098                 recordsize = LittleLong(pchunk->recordsize);
2099                 numrecords = LittleLong(pchunk->numrecords);
2100                 if (developer.integer >= 100)
2101                         Con_Printf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2102                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2103                         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);
2104                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2105                 {
2106                         // nothing to do
2107                 }
2108                 else if (!strcmp(pchunk->id, "PNTS0000"))
2109                 {
2110                         pskpnts_t *p;
2111                         if (recordsize != sizeof(*p))
2112                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2113                         // byteswap in place and keep the pointer
2114                         numpnts = numrecords;
2115                         pnts = (pskpnts_t *)buffer;
2116                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2117                         {
2118                                 p->origin[0] = LittleFloat(p->origin[0]);
2119                                 p->origin[1] = LittleFloat(p->origin[1]);
2120                                 p->origin[2] = LittleFloat(p->origin[2]);
2121                         }
2122                         buffer = p;
2123                 }
2124                 else if (!strcmp(pchunk->id, "VTXW0000"))
2125                 {
2126                         pskvtxw_t *p;
2127                         if (recordsize != sizeof(*p))
2128                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2129                         // byteswap in place and keep the pointer
2130                         numvtxw = numrecords;
2131                         vtxw = (pskvtxw_t *)buffer;
2132                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2133                         {
2134                                 p->pntsindex = LittleShort(p->pntsindex);
2135                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2136                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2137                                 if (p->pntsindex >= numpnts)
2138                                 {
2139                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2140                                         p->pntsindex = 0;
2141                                 }
2142                         }
2143                         buffer = p;
2144                 }
2145                 else if (!strcmp(pchunk->id, "FACE0000"))
2146                 {
2147                         pskface_t *p;
2148                         if (recordsize != sizeof(*p))
2149                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2150                         // byteswap in place and keep the pointer
2151                         numfaces = numrecords;
2152                         faces = (pskface_t *)buffer;
2153                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2154                         {
2155                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2156                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2157                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2158                                 p->group = LittleLong(p->group);
2159                                 if (p->vtxwindex[0] >= numvtxw)
2160                                 {
2161                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2162                                         p->vtxwindex[0] = 0;
2163                                 }
2164                                 if (p->vtxwindex[1] >= numvtxw)
2165                                 {
2166                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2167                                         p->vtxwindex[1] = 0;
2168                                 }
2169                                 if (p->vtxwindex[2] >= numvtxw)
2170                                 {
2171                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2172                                         p->vtxwindex[2] = 0;
2173                                 }
2174                         }
2175                         buffer = p;
2176                 }
2177                 else if (!strcmp(pchunk->id, "MATT0000"))
2178                 {
2179                         pskmatt_t *p;
2180                         if (recordsize != sizeof(*p))
2181                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2182                         // byteswap in place and keep the pointer
2183                         nummatts = numrecords;
2184                         matts = (pskmatt_t *)buffer;
2185                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2186                         {
2187                                 // nothing to do
2188                         }
2189                         buffer = p;
2190                 }
2191                 else if (!strcmp(pchunk->id, "REFSKELT"))
2192                 {
2193                         pskboneinfo_t *p;
2194                         if (recordsize != sizeof(*p))
2195                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2196                         // byteswap in place and keep the pointer
2197                         numbones = numrecords;
2198                         bones = (pskboneinfo_t *)buffer;
2199                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2200                         {
2201                                 p->numchildren = LittleLong(p->numchildren);
2202                                 p->parent = LittleLong(p->parent);
2203                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2204                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2205                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2206                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2207                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2208                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2209                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2210                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2211                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2212                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2213                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2214 #ifdef PSKQUATNEGATIONS
2215                                 if (index)
2216                                 {
2217                                         p->basepose.quat[0] *= -1;
2218                                         p->basepose.quat[1] *= -1;
2219                                         p->basepose.quat[2] *= -1;
2220                                 }
2221                                 else
2222                                 {
2223                                         p->basepose.quat[0] *=  1;
2224                                         p->basepose.quat[1] *= -1;
2225                                         p->basepose.quat[2] *=  1;
2226                                 }
2227 #endif
2228                                 if (p->parent < 0 || p->parent >= numbones)
2229                                 {
2230                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2231                                         p->parent = 0;
2232                                 }
2233                         }
2234                         buffer = p;
2235                 }
2236                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2237                 {
2238                         pskrawweights_t *p;
2239                         if (recordsize != sizeof(*p))
2240                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2241                         // byteswap in place and keep the pointer
2242                         numrawweights = numrecords;
2243                         rawweights = (pskrawweights_t *)buffer;
2244                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2245                         {
2246                                 p->weight = LittleFloat(p->weight);
2247                                 p->pntsindex = LittleLong(p->pntsindex);
2248                                 p->boneindex = LittleLong(p->boneindex);
2249                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2250                                 {
2251                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2252                                         p->pntsindex = 0;
2253                                 }
2254                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2255                                 {
2256                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2257                                         p->boneindex = 0;
2258                                 }
2259                         }
2260                         buffer = p;
2261                 }
2262         }
2263
2264         while (animbuffer < animbufferend)
2265         {
2266                 pchunk = (pskchunk_t *)animbuffer;
2267                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2268                 version = LittleLong(pchunk->version);
2269                 recordsize = LittleLong(pchunk->recordsize);
2270                 numrecords = LittleLong(pchunk->numrecords);
2271                 if (developer.integer >= 100)
2272                         Con_Printf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2273                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2274                         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);
2275                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2276                 {
2277                         // nothing to do
2278                 }
2279                 else if (!strcmp(pchunk->id, "BONENAMES"))
2280                 {
2281                         pskboneinfo_t *p;
2282                         if (recordsize != sizeof(*p))
2283                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2284                         // byteswap in place and keep the pointer
2285                         numanimbones = numrecords;
2286                         animbones = (pskboneinfo_t *)animbuffer;
2287                         // NOTE: supposedly psa does not need to match the psk model, the
2288                         // bones missing from the psa would simply use their base
2289                         // positions from the psk, but this is hard for me to implement
2290                         // and people can easily make animations that match.
2291                         if (numanimbones != numbones)
2292                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2293                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2294                         {
2295                                 p->numchildren = LittleLong(p->numchildren);
2296                                 p->parent = LittleLong(p->parent);
2297                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2298                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2299                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2300                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2301                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2302                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2303                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2304                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2305                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2306                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2307                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2308 #ifdef PSKQUATNEGATIONS
2309                                 if (index)
2310                                 {
2311                                         p->basepose.quat[0] *= -1;
2312                                         p->basepose.quat[1] *= -1;
2313                                         p->basepose.quat[2] *= -1;
2314                                 }
2315                                 else
2316                                 {
2317                                         p->basepose.quat[0] *=  1;
2318                                         p->basepose.quat[1] *= -1;
2319                                         p->basepose.quat[2] *=  1;
2320                                 }
2321 #endif
2322                                 if (p->parent < 0 || p->parent >= numanimbones)
2323                                 {
2324                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2325                                         p->parent = 0;
2326                                 }
2327                                 // check that bones are the same as in the base
2328                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2329                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2330                         }
2331                         animbuffer = p;
2332                 }
2333                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2334                 {
2335                         pskaniminfo_t *p;
2336                         if (recordsize != sizeof(*p))
2337                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2338                         // byteswap in place and keep the pointer
2339                         numanims = numrecords;
2340                         anims = (pskaniminfo_t *)animbuffer;
2341                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2342                         {
2343                                 p->numbones = LittleLong(p->numbones);
2344                                 p->playtime = LittleFloat(p->playtime);
2345                                 p->fps = LittleFloat(p->fps);
2346                                 p->firstframe = LittleLong(p->firstframe);
2347                                 p->numframes = LittleLong(p->numframes);
2348                                 if (p->numbones != numbones)
2349                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2350                         }
2351                         animbuffer = p;
2352                 }
2353                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2354                 {
2355                         pskanimkeys_t *p;
2356                         if (recordsize != sizeof(*p))
2357                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2358                         numanimkeys = numrecords;
2359                         animkeys = (pskanimkeys_t *)animbuffer;
2360                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2361                         {
2362                                 p->origin[0] = LittleFloat(p->origin[0]);
2363                                 p->origin[1] = LittleFloat(p->origin[1]);
2364                                 p->origin[2] = LittleFloat(p->origin[2]);
2365                                 p->quat[0] = LittleFloat(p->quat[0]);
2366                                 p->quat[1] = LittleFloat(p->quat[1]);
2367                                 p->quat[2] = LittleFloat(p->quat[2]);
2368                                 p->quat[3] = LittleFloat(p->quat[3]);
2369                                 p->frametime = LittleFloat(p->frametime);
2370 #ifdef PSKQUATNEGATIONS
2371                                 if (index % numbones)
2372                                 {
2373                                         p->quat[0] *= -1;
2374                                         p->quat[1] *= -1;
2375                                         p->quat[2] *= -1;
2376                                 }
2377                                 else
2378                                 {
2379                                         p->quat[0] *=  1;
2380                                         p->quat[1] *= -1;
2381                                         p->quat[2] *=  1;
2382                                 }
2383 #endif
2384                         }
2385                         animbuffer = p;
2386                         // TODO: allocate bonepose stuff
2387                 }
2388                 else
2389                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2390         }
2391
2392         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights || !numanims || !anims || !numanimkeys || !animkeys)
2393                 Host_Error("%s: missing required chunks", loadmodel->name);
2394
2395         loadmodel->numframes = 0;
2396         for (index = 0;index < numanims;index++)
2397                 loadmodel->numframes += anims[index].numframes;
2398
2399         if (numanimkeys != numbones * loadmodel->numframes)
2400                 Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2401
2402         meshvertices = numvtxw;
2403         meshtriangles = numfaces;
2404
2405         // load external .skin files if present
2406         skinfiles = Mod_LoadSkinFiles();
2407         if (loadmodel->numskins < 1)
2408                 loadmodel->numskins = 1;
2409         loadmodel->num_bones = numbones;
2410         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
2411         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = nummatts;
2412         // do most allocations as one merged chunk
2413         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[12]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
2414         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2415         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2416         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2417         loadmodel->surfmesh.num_vertices = meshvertices;
2418         loadmodel->surfmesh.num_triangles = meshtriangles;
2419         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2420         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2421         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
2422         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2423         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2424         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
2425         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
2426         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
2427         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
2428         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2429         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
2430         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2431         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2432         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2433
2434         for (i = 0;i < loadmodel->numskins;i++)
2435         {
2436                 loadmodel->skinscenes[i].firstframe = i;
2437                 loadmodel->skinscenes[i].framecount = 1;
2438                 loadmodel->skinscenes[i].loop = true;
2439                 loadmodel->skinscenes[i].framerate = 10;
2440         }
2441
2442         // create surfaces
2443         for (index = 0, i = 0;index < nummatts;index++)
2444         {
2445                 // since psk models do not have named sections, reuse their shader name as the section name
2446                 if (matts[index].name[0])
2447                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2448                 else
2449                         for (j = 0;j < loadmodel->numskins;j++)
2450                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + index + j * loadmodel->num_surfaces, NULL);
2451                 loadmodel->surfacelist[index] = index;
2452                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2453                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2454                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2455         }
2456
2457         // copy over the vertex locations and texcoords
2458         for (index = 0;index < numvtxw;index++)
2459         {
2460                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2461                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2462                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2463                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2464                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2465         }
2466
2467         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2468         for (index = 0;index < numfaces;index++)
2469                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2470         for (index = 0, i = 0;index < nummatts;index++)
2471         {
2472                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2473                 i += loadmodel->data_surfaces[index].num_triangles;
2474                 loadmodel->data_surfaces[index].num_triangles = 0;
2475         }
2476         for (index = 0;index < numfaces;index++)
2477         {
2478                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2479                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2480                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2481                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2482         }
2483
2484         // copy over the bones
2485         for (index = 0;index < numbones;index++)
2486         {
2487                 strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2488                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
2489                 if (loadmodel->data_bones[index].parent >= index)
2490                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
2491         }
2492
2493         // sort the psk point weights into the vertex weight tables
2494         // (which only accept up to 4 bones per vertex)
2495         for (index = 0;index < numvtxw;index++)
2496         {
2497                 int l;
2498                 float sum;
2499                 for (j = 0;j < numrawweights;j++)
2500                 {
2501                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
2502                         {
2503                                 int boneindex = rawweights[j].boneindex;
2504                                 float influence = rawweights[j].weight;
2505                                 for (l = 0;l < 4;l++)
2506                                 {
2507                                         if (loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] < influence)
2508                                         {
2509                                                 // move lower influence weights out of the way first
2510                                                 int l2;
2511                                                 for (l2 = 3;l2 > l;l2--)
2512                                                 {
2513                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2-1];
2514                                                         loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2-1];
2515                                                 }
2516                                                 // store the new weight
2517                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] = influence;
2518                                                 loadmodel->surfmesh.data_vertexweightindex4i[index*4+l] = boneindex;
2519                                                 break;
2520                                         }
2521                                 }
2522                         }
2523                 }
2524                 sum = 0;
2525                 for (l = 0;l < 4;l++)
2526                         sum += loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l];
2527                 if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2528                 {
2529                         float f = 1.0f / sum;
2530                         for (l = 0;l < 4;l++)
2531                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] *= f;
2532                 }
2533         }
2534
2535         // set up the animscenes based on the anims
2536         for (index = 0, i = 0;index < numanims;index++)
2537         {
2538                 for (j = 0;j < anims[index].numframes;j++, i++)
2539                 {
2540                         dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
2541                         loadmodel->animscenes[i].firstframe = i;
2542                         loadmodel->animscenes[i].framecount = 1;
2543                         loadmodel->animscenes[i].loop = true;
2544                         loadmodel->animscenes[i].framerate = 10;
2545                 }
2546         }
2547
2548         // load the poses from the animkeys
2549         for (index = 0;index < numanimkeys;index++)
2550         {
2551                 pskanimkeys_t *k = animkeys + index;
2552                 matrix4x4_t matrix;
2553                 Matrix4x4_FromOriginQuat(&matrix, k->origin[0], k->origin[1], k->origin[2], k->quat[0], k->quat[1], k->quat[2], k->quat[3]);
2554                 Matrix4x4_ToArray12FloatD3D(&matrix, loadmodel->data_poses + index*12);
2555         }
2556         Mod_FreeSkinFiles(skinfiles);
2557         Mem_Free(animfilebuffer);
2558
2559         // compute all the mesh information that was not loaded from the file
2560         // TODO: honor smoothing groups somehow?
2561         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2562         Mod_BuildBaseBonePoses();
2563         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
2564         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);
2565         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2566         Mod_Alias_CalculateBoundingBox();
2567
2568         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2569 }
2570