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         if (cls.state == ca_dedicated)
 678                 return;
 679         // hack
 680         if (!skinframe)
 681                 skinframe = R_SkinFrame_LoadMissing();
 682         memset(texture, 0, sizeof(*texture));
 683         texture->currentframe = texture;
 684         //texture->animated = false;
 685         texture->numskinframes = 1;
 686         texture->skinframerate = 1;
 687         texture->skinframes[0] = skinframe;
 688         texture->currentskinframe = skinframe;
 689         //texture->backgroundnumskinframes = 0;
 690         //texture->customblendfunc[0] = 0;
 691         //texture->customblendfunc[1] = 0;
 692         //texture->surfaceflags = 0;
 693         //texture->supercontents = 0;
 694         //texture->surfaceparms = 0;
 695         //texture->textureflags = 0;
 696
 697         texture->basematerialflags = MATERIALFLAG_WALL;
 698         if (texture->currentskinframe->fog)
 699                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
 700         texture->currentmaterialflags = texture->basematerialflags;
 701 }
 702
 703 static void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, char *meshname, char *shadername)
 704 {
 705         int i;
 706         skinfileitem_t *skinfileitem;
 707         skinframe_t *tempskinframe;
 708         if (skinfile)
 709         {
 710                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
 711                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
 712                 {
 713                         memset(skin, 0, sizeof(*skin));
 714                         // see if a mesh
 715                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
 716                         {
 717                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
 718                                 if (!strcmp(skinfileitem->name, meshname) && strcmp(skinfileitem->replacement, "common/nodraw") && strcmp(skinfileitem->replacement, "textures/common/nodraw"))
 719                                 {
 720                                         if (!Mod_LoadTextureFromQ3Shader(skin, skinfileitem->replacement, false, false, true))
 721                                         {
 722                                                 tempskinframe = R_SkinFrame_LoadExternal(skinfileitem->replacement, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP | TEXF_COMPRESS, false);
 723                                                 if (!tempskinframe)
 724                                                         if (cls.state != ca_dedicated)
 725                                                                 Con_DPrintf("mesh \"%s\": failed to load skin #%i \"%s\"\n", meshname, i, skinfileitem->replacement);
 726                                                 Mod_BuildAliasSkinFromSkinFrame(skin, tempskinframe);
 727                                         }
 728                                         break;
 729                                 }
 730                         }
 731                         if (!skinfileitem)
 732                         {
 733                                 // don't render unmentioned meshes
 734                                 Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
 735                                 skin->basematerialflags = skin->currentmaterialflags = 0;
 736                         }
 737                 }
 738         }
 739         else
 740         {
 741                 if (!Mod_LoadTextureFromQ3Shader(skin, shadername, false, false, true))
 742                 {
 743                         tempskinframe = R_SkinFrame_LoadExternal(shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP | TEXF_COMPRESS, false);
 744                         if (!tempskinframe)
 745                                 if (cls.state != ca_dedicated)
 746                                         Con_Printf("Can't find texture \"%s\" for mesh \"%s\", using grey checkerboard\n", shadername, meshname);
 747                         Mod_BuildAliasSkinFromSkinFrame(skin, tempskinframe);
 748                 }
 749         }
 750 }
 751
 752 #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);
 753 #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);
 754 void Mod_IDP0_Load(model_t *mod, void *buffer, void *bufferend)
 755 {
 756         int i, j, version, totalskins, skinwidth, skinheight, groupframes, groupskins, numverts;
 757         float scales, scalet, interval;
 758         msurface_t *surface;
 759         unsigned char *data;
 760         mdl_t *pinmodel;
 761         stvert_t *pinstverts;
 762         dtriangle_t *pintriangles;
 763         daliasskintype_t *pinskintype;
 764         daliasskingroup_t *pinskingroup;
 765         daliasskininterval_t *pinskinintervals;
 766         daliasframetype_t *pinframetype;
 767         daliasgroup_t *pinframegroup;
 768         unsigned char *datapointer, *startframes, *startskins;
 769         char name[MAX_QPATH];
 770         skinframe_t *tempskinframe;
 771         animscene_t *tempskinscenes;
 772         texture_t *tempaliasskins;
 773         float *vertst;
 774         int *vertonseam, *vertremap;
 775         skinfile_t *skinfiles;
 776
 777         datapointer = (unsigned char *)buffer;
 778         pinmodel = (mdl_t *)datapointer;
 779         datapointer += sizeof(mdl_t);
 780
 781         version = LittleLong (pinmodel->version);
 782         if (version != ALIAS_VERSION)
 783                 Host_Error ("%s has wrong version number (%i should be %i)",
 784                                  loadmodel->name, version, ALIAS_VERSION);
 785
 786         loadmodel->modeldatatypestring = "MDL";
 787
 788         loadmodel->type = mod_alias;
 789         loadmodel->DrawSky = NULL;
 790         loadmodel->Draw = R_Q1BSP_Draw;
 791         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
 792         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
 793         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
 794         loadmodel->DrawLight = R_Q1BSP_DrawLight;
 795         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
 796
 797         loadmodel->num_surfaces = 1;
 798         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
 799         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int));
 800         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
 801         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
 802         loadmodel->surfacelist[0] = 0;
 803
 804         loadmodel->numskins = LittleLong(pinmodel->numskins);
 805         BOUNDI(loadmodel->numskins,0,65536);
 806         skinwidth = LittleLong (pinmodel->skinwidth);
 807         BOUNDI(skinwidth,0,65536);
 808         skinheight = LittleLong (pinmodel->skinheight);
 809         BOUNDI(skinheight,0,65536);
 810         numverts = LittleLong(pinmodel->numverts);
 811         BOUNDI(numverts,0,65536);
 812         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->numtris);
 813         BOUNDI(loadmodel->surfmesh.num_triangles,0,65536);
 814         loadmodel->numframes = LittleLong(pinmodel->numframes);
 815         BOUNDI(loadmodel->numframes,0,65536);
 816         loadmodel->synctype = (synctype_t)LittleLong (pinmodel->synctype);
 817         BOUNDI(loadmodel->synctype,0,2);
 818         // convert model flags to EF flags (MF_ROCKET becomes EF_ROCKET, etc)
 819         i = LittleLong (pinmodel->flags);
 820         loadmodel->effects = ((i & 255) << 24) | (i & 0x00FFFF00);
 821
 822         for (i = 0;i < 3;i++)
 823         {
 824                 loadmodel->surfmesh.num_morphmdlframescale[i] = LittleFloat (pinmodel->scale[i]);
 825                 loadmodel->surfmesh.num_morphmdlframetranslate[i] = LittleFloat (pinmodel->scale_origin[i]);
 826         }
 827
 828         startskins = datapointer;
 829         totalskins = 0;
 830         for (i = 0;i < loadmodel->numskins;i++)
 831         {
 832                 pinskintype = (daliasskintype_t *)datapointer;
 833                 datapointer += sizeof(daliasskintype_t);
 834                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 835                         groupskins = 1;
 836                 else
 837                 {
 838                         pinskingroup = (daliasskingroup_t *)datapointer;
 839                         datapointer += sizeof(daliasskingroup_t);
 840                         groupskins = LittleLong(pinskingroup->numskins);
 841                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 842                 }
 843
 844                 for (j = 0;j < groupskins;j++)
 845                 {
 846                         datapointer += skinwidth * skinheight;
 847                         totalskins++;
 848                 }
 849         }
 850
 851         pinstverts = (stvert_t *)datapointer;
 852         datapointer += sizeof(stvert_t) * numverts;
 853
 854         pintriangles = (dtriangle_t *)datapointer;
 855         datapointer += sizeof(dtriangle_t) * loadmodel->surfmesh.num_triangles;
 856
 857         startframes = datapointer;
 858         loadmodel->surfmesh.num_morphframes = 0;
 859         for (i = 0;i < loadmodel->numframes;i++)
 860         {
 861                 pinframetype = (daliasframetype_t *)datapointer;
 862                 datapointer += sizeof(daliasframetype_t);
 863                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 864                         groupframes = 1;
 865                 else
 866                 {
 867                         pinframegroup = (daliasgroup_t *)datapointer;
 868                         datapointer += sizeof(daliasgroup_t);
 869                         groupframes = LittleLong(pinframegroup->numframes);
 870                         datapointer += sizeof(daliasinterval_t) * groupframes;
 871                 }
 872
 873                 for (j = 0;j < groupframes;j++)
 874                 {
 875                         datapointer += sizeof(daliasframe_t);
 876                         datapointer += sizeof(trivertx_t) * numverts;
 877                         loadmodel->surfmesh.num_morphframes++;
 878                 }
 879         }
 880
 881         // store texture coordinates into temporary array, they will be stored
 882         // after usage is determined (triangle data)
 883         vertst = (float *)Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
 884         vertremap = (int *)Mem_Alloc(tempmempool, numverts * 3 * sizeof(int));
 885         vertonseam = vertremap + numverts * 2;
 886
 887         scales = 1.0 / skinwidth;
 888         scalet = 1.0 / skinheight;
 889         for (i = 0;i < numverts;i++)
 890         {
 891                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 892                 vertst[i*2+0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 893                 vertst[i*2+1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 894                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
 895                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
 896         }
 897
 898 // load triangle data
 899         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->surfmesh.num_triangles);
 900
 901         // read the triangle elements
 902         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 903                 for (j = 0;j < 3;j++)
 904                         loadmodel->surfmesh.data_element3i[i*3+j] = LittleLong(pintriangles[i].vertindex[j]);
 905         // validate (note numverts is used because this is the original data)
 906         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, numverts, __FILE__, __LINE__);
 907         // now butcher the elements according to vertonseam and tri->facesfront
 908         // and then compact the vertex set to remove duplicates
 909         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
 910                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 911                         for (j = 0;j < 3;j++)
 912                                 if (vertonseam[loadmodel->surfmesh.data_element3i[i*3+j]])
 913                                         loadmodel->surfmesh.data_element3i[i*3+j] += numverts;
 914         // count the usage
 915         // (this uses vertremap to count usage to save some memory)
 916         for (i = 0;i < numverts*2;i++)
 917                 vertremap[i] = 0;
 918         for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
 919                 vertremap[loadmodel->surfmesh.data_element3i[i]]++;
 920         // build remapping table and compact array
 921         loadmodel->surfmesh.num_vertices = 0;
 922         for (i = 0;i < numverts*2;i++)
 923         {
 924                 if (vertremap[i])
 925                 {
 926                         vertremap[i] = loadmodel->surfmesh.num_vertices;
 927                         vertst[loadmodel->surfmesh.num_vertices*2+0] = vertst[i*2+0];
 928                         vertst[loadmodel->surfmesh.num_vertices*2+1] = vertst[i*2+1];
 929                         loadmodel->surfmesh.num_vertices++;
 930                 }
 931                 else
 932                         vertremap[i] = -1; // not used at all
 933         }
 934         // remap the elements to the new vertex set
 935         for (i = 0;i < loadmodel->surfmesh.num_triangles * 3;i++)
 936                 loadmodel->surfmesh.data_element3i[i] = vertremap[loadmodel->surfmesh.data_element3i[i]];
 937         // store the texture coordinates
 938         loadmodel->surfmesh.data_texcoordtexture2f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * loadmodel->surfmesh.num_vertices);
 939         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
 940         {
 941                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = vertst[i*2+0];
 942                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = vertst[i*2+1];
 943         }
 944
 945 // load the frames
 946         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 947         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
 948         loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
 949         Mod_MDL_LoadFrames (startframes, numverts, vertremap);
 950         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
 951         Mod_Alias_CalculateBoundingBox();
 952         Mod_Alias_Mesh_CompileFrameZero();
 953
 954         Mem_Free(vertst);
 955         Mem_Free(vertremap);
 956
 957         // load the skins
 958         skinfiles = Mod_LoadSkinFiles();
 959         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 960         loadmodel->num_textures = loadmodel->num_surfaces * totalskins;
 961         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
 962         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
 963         if (skinfiles)
 964         {
 965                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
 966                 Mod_FreeSkinFiles(skinfiles);
 967                 for (i = 0;i < loadmodel->numskins;i++)
 968                 {
 969                         loadmodel->skinscenes[i].firstframe = i;
 970                         loadmodel->skinscenes[i].framecount = 1;
 971                         loadmodel->skinscenes[i].loop = true;
 972                         loadmodel->skinscenes[i].framerate = 10;
 973                 }
 974         }
 975         else
 976         {
 977                 totalskins = 0;
 978                 datapointer = startskins;
 979                 for (i = 0;i < loadmodel->numskins;i++)
 980                 {
 981                         pinskintype = (daliasskintype_t *)datapointer;
 982                         datapointer += sizeof(daliasskintype_t);
 983
 984                         if (pinskintype->type == ALIAS_SKIN_SINGLE)
 985                         {
 986                                 groupskins = 1;
 987                                 interval = 0.1f;
 988                         }
 989                         else
 990                         {
 991                                 pinskingroup = (daliasskingroup_t *)datapointer;
 992                                 datapointer += sizeof(daliasskingroup_t);
 993
 994                                 groupskins = LittleLong (pinskingroup->numskins);
 995
 996                                 pinskinintervals = (daliasskininterval_t *)datapointer;
 997                                 datapointer += sizeof(daliasskininterval_t) * groupskins;
 998
 999                                 interval = LittleFloat(pinskinintervals[0].interval);
1000                                 if (interval < 0.01f)
1001                                 {
1002                                         Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
1003                                         interval = 0.1f;
1004                                 }
1005                         }
1006
1007                         sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
1008                         loadmodel->skinscenes[i].firstframe = totalskins;
1009                         loadmodel->skinscenes[i].framecount = groupskins;
1010                         loadmodel->skinscenes[i].framerate = 1.0f / interval;
1011                         loadmodel->skinscenes[i].loop = true;
1012
1013                         for (j = 0;j < groupskins;j++)
1014                         {
1015                                 if (groupskins > 1)
1016                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
1017                                 else
1018                                         sprintf (name, "%s_%i", loadmodel->name, i);
1019                                 if (!Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, name, false, false, true))
1020                                 {
1021                                         tempskinframe = R_SkinFrame_LoadExternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, false);
1022                                         if (!tempskinframe)
1023                                                 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);
1024                                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
1025                                 }
1026                                 datapointer += skinwidth * skinheight;
1027                                 totalskins++;
1028                         }
1029                 }
1030                 // check for skins that don't exist in the model, but do exist as external images
1031                 // (this was added because yummyluv kept pestering me about support for it)
1032                 // TODO: support shaders here?
1033                 while ((tempskinframe = R_SkinFrame_LoadExternal(va("%s_%i", loadmodel->name, loadmodel->numskins), (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS, false)))
1034                 {
1035                         // expand the arrays to make room
1036                         tempskinscenes = loadmodel->skinscenes;
1037                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
1038                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
1039                         Mem_Free(tempskinscenes);
1040
1041                         tempaliasskins = loadmodel->data_textures;
1042                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
1043                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1044                         Mem_Free(tempaliasskins);
1045
1046                         // store the info about the new skin
1047                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
1048                         strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
1049                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
1050                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
1051                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
1052                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
1053
1054                         //increase skin counts
1055                         loadmodel->numskins++;
1056                         totalskins++;
1057
1058                         // fix up the pointers since they are pointing at the old textures array
1059                         // FIXME: this is a hack!
1060                         for (j = 0;j < loadmodel->numskins * loadmodel->num_surfaces;j++)
1061                                 loadmodel->data_textures[j].currentframe = &loadmodel->data_textures[j];
1062                 }
1063         }
1064
1065         surface = loadmodel->data_surfaces;
1066         surface->texture = loadmodel->data_textures;
1067         surface->num_firsttriangle = 0;
1068         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1069         surface->num_firstvertex = 0;
1070         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1071
1072         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1073 }
1074
1075 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
1076 {
1077         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
1078         float iskinwidth, iskinheight;
1079         unsigned char *data;
1080         msurface_t *surface;
1081         md2_t *pinmodel;
1082         unsigned char *base, *datapointer;
1083         md2frame_t *pinframe;
1084         char *inskin;
1085         md2triangle_t *intri;
1086         unsigned short *inst;
1087         struct md2verthash_s
1088         {
1089                 struct md2verthash_s *next;
1090                 unsigned short xyz;
1091                 unsigned short st;
1092         }
1093         *hash, **md2verthash, *md2verthashdata;
1094         skinframe_t *tempskinframe;
1095         skinfile_t *skinfiles;
1096
1097         pinmodel = (md2_t *)buffer;
1098         base = (unsigned char *)buffer;
1099
1100         version = LittleLong (pinmodel->version);
1101         if (version != MD2ALIAS_VERSION)
1102                 Host_Error ("%s has wrong version number (%i should be %i)",
1103                         loadmodel->name, version, MD2ALIAS_VERSION);
1104
1105         loadmodel->modeldatatypestring = "MD2";
1106
1107         loadmodel->type = mod_alias;
1108         loadmodel->DrawSky = NULL;
1109         loadmodel->Draw = R_Q1BSP_Draw;
1110         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
1111         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1112         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1113         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1114         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1115
1116         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
1117                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
1118         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
1119                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
1120         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
1121                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
1122         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
1123                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
1124
1125         end = LittleLong(pinmodel->ofs_end);
1126         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
1127                 Host_Error ("%s is not a valid model", loadmodel->name);
1128         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
1129                 Host_Error ("%s is not a valid model", loadmodel->name);
1130         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
1131                 Host_Error ("%s is not a valid model", loadmodel->name);
1132         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
1133                 Host_Error ("%s is not a valid model", loadmodel->name);
1134         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
1135                 Host_Error ("%s is not a valid model", loadmodel->name);
1136
1137         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1138         numxyz = LittleLong(pinmodel->num_xyz);
1139         numst = LittleLong(pinmodel->num_st);
1140         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1141         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1142         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1143         skinwidth = LittleLong(pinmodel->skinwidth);
1144         skinheight = LittleLong(pinmodel->skinheight);
1145         iskinwidth = 1.0f / skinwidth;
1146         iskinheight = 1.0f / skinheight;
1147
1148         loadmodel->num_surfaces = 1;
1149         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1150         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]));
1151         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1152         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1153         loadmodel->surfacelist[0] = 0;
1154         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1155         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1156         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1157         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1158
1159         loadmodel->synctype = ST_RAND;
1160
1161         // load the skins
1162         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1163         skinfiles = Mod_LoadSkinFiles();
1164         if (skinfiles)
1165         {
1166                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1167                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1168                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1169                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1170                 Mod_FreeSkinFiles(skinfiles);
1171         }
1172         else if (loadmodel->numskins)
1173         {
1174                 // skins found (most likely not a player model)
1175                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1176                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1177                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1178                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1179                 {
1180                         if (!Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i * loadmodel->num_surfaces, inskin, false, false, true))
1181                         {
1182                                 tempskinframe = R_SkinFrame_LoadExternal(inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP | TEXF_COMPRESS, false);
1183                                 if (!tempskinframe)
1184                                         Con_Printf("%s is missing skin \"%s\"\n", loadmodel->name, inskin);
1185                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, tempskinframe);
1186                         }
1187                 }
1188         }
1189         else
1190         {
1191                 // no skins (most likely a player model)
1192                 loadmodel->numskins = 1;
1193                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1194                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1195                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1196                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
1197         }
1198
1199         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1200         for (i = 0;i < loadmodel->numskins;i++)
1201         {
1202                 loadmodel->skinscenes[i].firstframe = i;
1203                 loadmodel->skinscenes[i].framecount = 1;
1204                 loadmodel->skinscenes[i].loop = true;
1205                 loadmodel->skinscenes[i].framerate = 10;
1206         }
1207
1208         // load the triangles and stvert data
1209         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1210         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1211         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1212         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1213         // swap the triangle list
1214         loadmodel->surfmesh.num_vertices = 0;
1215         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1216         {
1217                 for (j = 0;j < 3;j++)
1218                 {
1219                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1220                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1221                         if (xyz >= numxyz)
1222                         {
1223                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1224                                 xyz = 0;
1225                         }
1226                         if (st >= numst)
1227                         {
1228                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1229                                 st = 0;
1230                         }
1231                         hashindex = (xyz * 256 + st) & 65535;
1232                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1233                                 if (hash->xyz == xyz && hash->st == st)
1234                                         break;
1235                         if (hash == NULL)
1236                         {
1237                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1238                                 hash->xyz = xyz;
1239                                 hash->st = st;
1240                                 hash->next = md2verthash[hashindex];
1241                                 md2verthash[hashindex] = hash;
1242                         }
1243                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1244                 }
1245         }
1246
1247         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1248         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));
1249         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1250         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1251         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1252         {
1253                 int sts, stt;
1254                 hash = md2verthashdata + i;
1255                 vertremap[i] = hash->xyz;
1256                 sts = LittleShort(inst[hash->st*2+0]);
1257                 stt = LittleShort(inst[hash->st*2+1]);
1258                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1259                 {
1260                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1261                         sts = 0;
1262                         stt = 0;
1263                 }
1264                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1265                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1266         }
1267
1268         Mem_Free(md2verthash);
1269         Mem_Free(md2verthashdata);
1270
1271         // load the frames
1272         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1273         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1274         {
1275                 int k;
1276                 trivertx_t *v;
1277                 trivertx_t *out;
1278                 pinframe = (md2frame_t *)datapointer;
1279                 datapointer += sizeof(md2frame_t);
1280                 // store the frame scale/translate into the appropriate array
1281                 for (j = 0;j < 3;j++)
1282                 {
1283                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1284                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1285                 }
1286                 // convert the vertices
1287                 v = (trivertx_t *)datapointer;
1288                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1289                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1290                         out[k] = v[vertremap[k]];
1291                 datapointer += numxyz * sizeof(trivertx_t);
1292
1293                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1294                 loadmodel->animscenes[i].firstframe = i;
1295                 loadmodel->animscenes[i].framecount = 1;
1296                 loadmodel->animscenes[i].framerate = 10;
1297                 loadmodel->animscenes[i].loop = true;
1298         }
1299
1300         Mem_Free(vertremap);
1301
1302         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1303         Mod_Alias_CalculateBoundingBox();
1304         Mod_Alias_Mesh_CompileFrameZero();
1305
1306         surface = loadmodel->data_surfaces;
1307         surface->texture = loadmodel->data_textures;
1308         surface->num_firsttriangle = 0;
1309         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1310         surface->num_firstvertex = 0;
1311         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1312
1313         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1314 }
1315
1316 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1317 {
1318         int i, j, k, version, meshvertices, meshtriangles;
1319         unsigned char *data;
1320         msurface_t *surface;
1321         md3modelheader_t *pinmodel;
1322         md3frameinfo_t *pinframe;
1323         md3mesh_t *pinmesh;
1324         md3tag_t *pintag;
1325         skinfile_t *skinfiles;
1326
1327         pinmodel = (md3modelheader_t *)buffer;
1328
1329         if (memcmp(pinmodel->identifier, "IDP3", 4))
1330                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1331         version = LittleLong (pinmodel->version);
1332         if (version != MD3VERSION)
1333                 Host_Error ("%s has wrong version number (%i should be %i)",
1334                         loadmodel->name, version, MD3VERSION);
1335
1336         skinfiles = Mod_LoadSkinFiles();
1337         if (loadmodel->numskins < 1)
1338                 loadmodel->numskins = 1;
1339
1340         loadmodel->modeldatatypestring = "MD3";
1341
1342         loadmodel->type = mod_alias;
1343         loadmodel->DrawSky = NULL;
1344         loadmodel->Draw = R_Q1BSP_Draw;
1345         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
1346         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1347         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1348         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1349         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1350         loadmodel->synctype = ST_RAND;
1351         // convert model flags to EF flags (MF_ROCKET becomes EF_ROCKET, etc)
1352         i = LittleLong (pinmodel->flags);
1353         loadmodel->effects = ((i & 255) << 24) | (i & 0x00FFFF00);
1354
1355         // set up some global info about the model
1356         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1357         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1358
1359         // make skinscenes for the skins (no groups)
1360         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1361         for (i = 0;i < loadmodel->numskins;i++)
1362         {
1363                 loadmodel->skinscenes[i].firstframe = i;
1364                 loadmodel->skinscenes[i].framecount = 1;
1365                 loadmodel->skinscenes[i].loop = true;
1366                 loadmodel->skinscenes[i].framerate = 10;
1367         }
1368
1369         // load frameinfo
1370         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1371         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1372         {
1373                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1374                 loadmodel->animscenes[i].firstframe = i;
1375                 loadmodel->animscenes[i].framecount = 1;
1376                 loadmodel->animscenes[i].framerate = 10;
1377                 loadmodel->animscenes[i].loop = true;
1378         }
1379
1380         // load tags
1381         loadmodel->num_tagframes = loadmodel->numframes;
1382         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1383         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1384         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1385         {
1386                 strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1387                 for (j = 0;j < 9;j++)
1388                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1389                 for (j = 0;j < 3;j++)
1390                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1391                 //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);
1392         }
1393
1394         // load meshes
1395         meshvertices = 0;
1396         meshtriangles = 0;
1397         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)))
1398         {
1399                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1400                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1401                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1402                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1403                 meshvertices += LittleLong(pinmesh->num_vertices);
1404                 meshtriangles += LittleLong(pinmesh->num_triangles);
1405         }
1406
1407         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1408         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1409         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1410         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));
1411         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1412         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1413         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1414         loadmodel->surfmesh.num_vertices = meshvertices;
1415         loadmodel->surfmesh.num_triangles = meshtriangles;
1416         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1417         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1418         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1419         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1420         loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
1421
1422         meshvertices = 0;
1423         meshtriangles = 0;
1424         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)))
1425         {
1426                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1427                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1428                 loadmodel->surfacelist[i] = i;
1429                 surface = loadmodel->data_surfaces + i;
1430                 surface->texture = loadmodel->data_textures + i;
1431                 surface->num_firsttriangle = meshtriangles;
1432                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1433                 surface->num_firstvertex = meshvertices;
1434                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1435                 meshvertices += surface->num_vertices;
1436                 meshtriangles += surface->num_triangles;
1437
1438                 for (j = 0;j < surface->num_triangles * 3;j++)
1439                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1440                 for (j = 0;j < surface->num_vertices;j++)
1441                 {
1442                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1443                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1444                 }
1445                 for (j = 0;j < loadmodel->numframes;j++)
1446                 {
1447                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1448                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1449                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1450                         {
1451                                 out->origin[0] = LittleShort(in->origin[0]);
1452                                 out->origin[1] = LittleShort(in->origin[1]);
1453                                 out->origin[2] = LittleShort(in->origin[2]);
1454                                 out->pitch = in->pitch;
1455                                 out->yaw = in->yaw;
1456                         }
1457                 }
1458
1459                 if (LittleLong(pinmesh->num_shaders) >= 1)
1460                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name);
1461                 else
1462                         for (j = 0;j < loadmodel->numskins;j++)
1463                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1464
1465                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1466         }
1467         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1468         Mod_Alias_Mesh_CompileFrameZero();
1469         Mod_Alias_CalculateBoundingBox();
1470         Mod_FreeSkinFiles(skinfiles);
1471
1472         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1473 }
1474
1475 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1476 {
1477         zymtype1header_t *pinmodel, *pheader;
1478         unsigned char *pbase;
1479         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1480         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose;
1481         zymvertex_t *verts, *vertdata;
1482         zymscene_t *scene;
1483         zymbone_t *bone;
1484         char *shadername;
1485         skinfile_t *skinfiles;
1486         unsigned char *data;
1487         msurface_t *surface;
1488
1489         pinmodel = (zymtype1header_t *)buffer;
1490         pbase = (unsigned char *)buffer;
1491         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1492                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model", loadmodel->name);
1493         if (BigLong(pinmodel->type) != 1)
1494                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1495
1496         loadmodel->modeldatatypestring = "ZYM";
1497
1498         loadmodel->type = mod_alias;
1499         loadmodel->synctype = ST_RAND;
1500
1501         // byteswap header
1502         pheader = pinmodel;
1503         pheader->type = BigLong(pinmodel->type);
1504         pheader->filesize = BigLong(pinmodel->filesize);
1505         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1506         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1507         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1508         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1509         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1510         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1511         pheader->radius = BigFloat(pinmodel->radius);
1512         pheader->numverts = BigLong(pinmodel->numverts);
1513         pheader->numtris = BigLong(pinmodel->numtris);
1514         pheader->numshaders = BigLong(pinmodel->numshaders);
1515         pheader->numbones = BigLong(pinmodel->numbones);
1516         pheader->numscenes = BigLong(pinmodel->numscenes);
1517         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1518         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1519         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1520         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1521         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1522         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1523         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1524         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1525         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1526         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1527         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1528         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1529         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1530         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1531         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1532         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1533         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1534         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1535
1536         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1537         {
1538                 Con_Printf("%s has no geometry\n", loadmodel->name);
1539                 return;
1540         }
1541         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1542         {
1543                 Con_Printf("%s has no animations\n", loadmodel->name);
1544                 return;
1545         }
1546
1547         loadmodel->DrawSky = NULL;
1548         loadmodel->Draw = R_Q1BSP_Draw;
1549         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
1550         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1551         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1552         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1553         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1554
1555         loadmodel->numframes = pheader->numscenes;
1556         loadmodel->num_surfaces = pheader->numshaders;
1557
1558         skinfiles = Mod_LoadSkinFiles();
1559         if (loadmodel->numskins < 1)
1560                 loadmodel->numskins = 1;
1561
1562         // make skinscenes for the skins (no groups)
1563         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1564         for (i = 0;i < loadmodel->numskins;i++)
1565         {
1566                 loadmodel->skinscenes[i].firstframe = i;
1567                 loadmodel->skinscenes[i].framecount = 1;
1568                 loadmodel->skinscenes[i].loop = true;
1569                 loadmodel->skinscenes[i].framerate = 10;
1570         }
1571
1572         // model bbox
1573         modelradius = pheader->radius;
1574         for (i = 0;i < 3;i++)
1575         {
1576                 loadmodel->normalmins[i] = pheader->mins[i];
1577                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1578                 loadmodel->rotatedmins[i] = -modelradius;
1579                 loadmodel->rotatedmaxs[i] = modelradius;
1580         }
1581         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1582         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1583         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1584         if (loadmodel->yawmaxs[0] > modelradius)
1585                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1586         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1587         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1588         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1589         loadmodel->radius = modelradius;
1590         loadmodel->radius2 = modelradius * modelradius;
1591
1592         // go through the lumps, swapping things
1593
1594         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1595         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1596         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1597         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1598         for (i = 0;i < pheader->numscenes;i++)
1599         {
1600                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1601                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1602                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1603                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1604                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1605                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1606                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1607                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1608                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1609                 if (loadmodel->animscenes[i].framerate < 0)
1610                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1611                 scene++;
1612         }
1613
1614         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1615         loadmodel->num_bones = pheader->numbones;
1616         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(aliasbone_t));
1617         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1618         for (i = 0;i < pheader->numbones;i++)
1619         {
1620                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1621                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1622                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1623                 if (loadmodel->data_bones[i].parent >= i)
1624                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1625         }
1626
1627         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1628         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1629         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1630         for (i = 0;i < pheader->numverts;i++)
1631         {
1632                 vertbonecounts[i] = BigLong(bonecount[i]);
1633                 if (vertbonecounts[i] != 1)
1634                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1635         }
1636
1637         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]);
1638
1639         meshvertices = pheader->numverts;
1640         meshtriangles = pheader->numtris;
1641
1642         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1643         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1644         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1645         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]));
1646         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1647         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1648         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1649         loadmodel->surfmesh.num_vertices = meshvertices;
1650         loadmodel->surfmesh.num_triangles = meshtriangles;
1651         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1652         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1653         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1654         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1655         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1656         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1657         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1658         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1659         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1660         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1661         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1662
1663         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1664         poses = (float *) (pheader->lump_poses.start + pbase);
1665         for (i = 0;i < pheader->lump_poses.length / 4;i++)
1666                 loadmodel->data_poses[i] = BigFloat(poses[i]);
1667
1668         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1669         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1670         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
1671         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1672         // (converting from weight-blending skeletal animation to
1673         //  deformation-based skeletal animation)
1674         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1675         for (i = 0;i < loadmodel->num_bones;i++)
1676         {
1677                 const float *m = loadmodel->data_poses + i * 12;
1678                 if (loadmodel->data_bones[i].parent >= 0)
1679                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1680                 else
1681                         for (k = 0;k < 12;k++)
1682                                 bonepose[12*i+k] = m[k];
1683         }
1684         for (j = 0;j < pheader->numverts;j++)
1685         {
1686                 // this format really should have had a per vertexweight weight value...
1687                 // but since it does not, the weighting is completely ignored and
1688                 // only one weight is allowed per vertex
1689                 int boneindex = BigLong(vertdata[j].bonenum);
1690                 const float *m = bonepose + 12 * boneindex;
1691                 float relativeorigin[3];
1692                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
1693                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
1694                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
1695                 // transform the vertex bone weight into the base mesh
1696                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
1697                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
1698                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
1699                 // store the weight as the primary weight on this vertex
1700                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1701                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = 1;
1702         }
1703         Z_Free(bonepose);
1704         // normals and tangents are calculated after elements are loaded
1705
1706         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1707         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
1708         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
1709         for (i = 0;i < pheader->numverts;i++)
1710         {
1711                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1712                 // flip T coordinate for OpenGL
1713                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1714         }
1715
1716         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1717         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1718         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1719
1720         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1721         //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)
1722         // byteswap, validate, and swap winding order of tris
1723         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1724         if (pheader->lump_render.length != count)
1725                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
1726         renderlist = (int *) (pheader->lump_render.start + pbase);
1727         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
1728         meshtriangles = 0;
1729         for (i = 0;i < loadmodel->num_surfaces;i++)
1730         {
1731                 int firstvertex, lastvertex;
1732                 if (renderlist >= renderlistend)
1733                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1734                 count = BigLong(*renderlist);renderlist++;
1735                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
1736                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1737
1738                 loadmodel->surfacelist[i] = i;
1739                 surface = loadmodel->data_surfaces + i;
1740                 surface->texture = loadmodel->data_textures + i;
1741                 surface->num_firsttriangle = meshtriangles;
1742                 surface->num_triangles = count;
1743                 meshtriangles += surface->num_triangles;
1744
1745                 // load the elements
1746                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1747                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
1748                 {
1749                         outelements[j*3+2] = BigLong(renderlist[0]);
1750                         outelements[j*3+1] = BigLong(renderlist[1]);
1751                         outelements[j*3+0] = BigLong(renderlist[2]);
1752                 }
1753                 // validate the elements and find the used vertex range
1754                 firstvertex = meshvertices;
1755                 lastvertex = 0;
1756                 for (j = 0;j < surface->num_triangles * 3;j++)
1757                 {
1758                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
1759                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
1760                         firstvertex = min(firstvertex, outelements[j]);
1761                         lastvertex = max(lastvertex, outelements[j]);
1762                 }
1763                 surface->num_firstvertex = firstvertex;
1764                 surface->num_vertices = lastvertex + 1 - firstvertex;
1765
1766                 // since zym models do not have named sections, reuse their shader
1767                 // name as the section name
1768                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
1769                 if (shadername[0])
1770                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
1771                 else
1772                         for (j = 0;j < loadmodel->numskins;j++)
1773                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1774         }
1775         Mod_FreeSkinFiles(skinfiles);
1776         Mem_Free(vertbonecounts);
1777         Mem_Free(verts);
1778
1779         // compute all the mesh information that was not loaded from the file
1780         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
1781         Mod_BuildBaseBonePoses();
1782         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
1783         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);
1784         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1785
1786         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1787 }
1788
1789 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1790 {
1791         dpmheader_t *pheader;
1792         dpmframe_t *frame;
1793         dpmbone_t *bone;
1794         dpmmesh_t *dpmmesh;
1795         unsigned char *pbase;
1796         int i, j, k, meshvertices, meshtriangles;
1797         skinfile_t *skinfiles;
1798         unsigned char *data;
1799         float *bonepose;
1800
1801         pheader = (dpmheader_t *)buffer;
1802         pbase = (unsigned char *)buffer;
1803         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
1804                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model", loadmodel->name);
1805         if (BigLong(pheader->type) != 2)
1806                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1807
1808         loadmodel->modeldatatypestring = "DPM";
1809
1810         loadmodel->type = mod_alias;
1811         loadmodel->synctype = ST_RAND;
1812
1813         // byteswap header
1814         pheader->type = BigLong(pheader->type);
1815         pheader->filesize = BigLong(pheader->filesize);
1816         pheader->mins[0] = BigFloat(pheader->mins[0]);
1817         pheader->mins[1] = BigFloat(pheader->mins[1]);
1818         pheader->mins[2] = BigFloat(pheader->mins[2]);
1819         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
1820         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
1821         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
1822         pheader->yawradius = BigFloat(pheader->yawradius);
1823         pheader->allradius = BigFloat(pheader->allradius);
1824         pheader->num_bones = BigLong(pheader->num_bones);
1825         pheader->num_meshs = BigLong(pheader->num_meshs);
1826         pheader->num_frames = BigLong(pheader->num_frames);
1827         pheader->ofs_bones = BigLong(pheader->ofs_bones);
1828         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
1829         pheader->ofs_frames = BigLong(pheader->ofs_frames);
1830
1831         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
1832         {
1833                 Con_Printf("%s has no geometry\n", loadmodel->name);
1834                 return;
1835         }
1836         if (pheader->num_frames < 1)
1837         {
1838                 Con_Printf("%s has no frames\n", loadmodel->name);
1839                 return;
1840         }
1841
1842         loadmodel->DrawSky = NULL;
1843         loadmodel->Draw = R_Q1BSP_Draw;
1844         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
1845         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1846         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1847         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1848         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1849
1850         // model bbox
1851         for (i = 0;i < 3;i++)
1852         {
1853                 loadmodel->normalmins[i] = pheader->mins[i];
1854                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1855                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
1856                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
1857                 loadmodel->rotatedmins[i] = -pheader->allradius;
1858                 loadmodel->rotatedmaxs[i] = pheader->allradius;
1859         }
1860         loadmodel->radius = pheader->allradius;
1861         loadmodel->radius2 = pheader->allradius * pheader->allradius;
1862
1863         // load external .skin files if present
1864         skinfiles = Mod_LoadSkinFiles();
1865         if (loadmodel->numskins < 1)
1866                 loadmodel->numskins = 1;
1867
1868         meshvertices = 0;
1869         meshtriangles = 0;
1870
1871         // gather combined statistics from the meshes
1872         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1873         for (i = 0;i < (int)pheader->num_meshs;i++)
1874         {
1875                 int numverts = BigLong(dpmmesh->num_verts);
1876                 meshvertices += numverts;;
1877                 meshtriangles += BigLong(dpmmesh->num_tris);
1878                 dpmmesh++;
1879         }
1880
1881         loadmodel->numframes = pheader->num_frames;
1882         loadmodel->num_bones = pheader->num_bones;
1883         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
1884         loadmodel->nummodelsurfaces = loadmodel->num_surfaces = pheader->num_meshs;
1885         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
1886         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
1887         // do most allocations as one merged chunk
1888         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));
1889         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1890         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1891         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1892         loadmodel->surfmesh.num_vertices = meshvertices;
1893         loadmodel->surfmesh.num_triangles = meshtriangles;
1894         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1895         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1896         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1897         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1898         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1899         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1900         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1901         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1902         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1903         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1904         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1905         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
1906         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
1907         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1908
1909         for (i = 0;i < loadmodel->numskins;i++)
1910         {
1911                 loadmodel->skinscenes[i].firstframe = i;
1912                 loadmodel->skinscenes[i].framecount = 1;
1913                 loadmodel->skinscenes[i].loop = true;
1914                 loadmodel->skinscenes[i].framerate = 10;
1915         }
1916
1917         // load the bone info
1918         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
1919         for (i = 0;i < loadmodel->num_bones;i++)
1920         {
1921                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1922                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1923                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1924                 if (loadmodel->data_bones[i].parent >= i)
1925                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1926         }
1927
1928         // load the frames
1929         frame = (dpmframe_t *) (pbase + pheader->ofs_frames);
1930         for (i = 0;i < loadmodel->numframes;i++)
1931         {
1932                 const float *poses;
1933                 memcpy(loadmodel->animscenes[i].name, frame->name, sizeof(frame->name));
1934                 loadmodel->animscenes[i].firstframe = i;
1935                 loadmodel->animscenes[i].framecount = 1;
1936                 loadmodel->animscenes[i].loop = true;
1937                 loadmodel->animscenes[i].framerate = 10;
1938                 // load the bone poses for this frame
1939                 poses = (float *) (pbase + BigLong(frame->ofs_bonepositions));
1940                 for (j = 0;j < loadmodel->num_bones*12;j++)
1941                         loadmodel->data_poses[i * loadmodel->num_bones*12 + j] = BigFloat(poses[j]);
1942                 // stuff not processed here: mins, maxs, yawradius, allradius
1943                 frame++;
1944         }
1945
1946         // load the meshes now
1947         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1948         meshvertices = 0;
1949         meshtriangles = 0;
1950         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1951         // (converting from weight-blending skeletal animation to
1952         //  deformation-based skeletal animation)
1953         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1954         for (i = 0;i < loadmodel->num_bones;i++)
1955         {
1956                 const float *m = loadmodel->data_poses + i * 12;
1957                 if (loadmodel->data_bones[i].parent >= 0)
1958                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1959                 else
1960                         for (k = 0;k < 12;k++)
1961                                 bonepose[12*i+k] = m[k];
1962         }
1963         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
1964         {
1965                 const int *inelements;
1966                 int *outelements;
1967                 const float *intexcoord;
1968                 msurface_t *surface;
1969
1970                 loadmodel->surfacelist[i] = i;
1971                 surface = loadmodel->data_surfaces + i;
1972                 surface->texture = loadmodel->data_textures + i;
1973                 surface->num_firsttriangle = meshtriangles;
1974                 surface->num_triangles = BigLong(dpmmesh->num_tris);
1975                 surface->num_firstvertex = meshvertices;
1976                 surface->num_vertices = BigLong(dpmmesh->num_verts);
1977                 meshvertices += surface->num_vertices;
1978                 meshtriangles += surface->num_triangles;
1979
1980                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
1981                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1982                 for (j = 0;j < surface->num_triangles;j++)
1983                 {
1984                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
1985                         outelements[0] = surface->num_firstvertex + BigLong(inelements[2]);
1986                         outelements[1] = surface->num_firstvertex + BigLong(inelements[1]);
1987                         outelements[2] = surface->num_firstvertex + BigLong(inelements[0]);
1988                         inelements += 3;
1989                         outelements += 3;
1990                 }
1991
1992                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
1993                 for (j = 0;j < surface->num_vertices*2;j++)
1994                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
1995
1996                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
1997                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
1998                 {
1999                         float sum;
2000                         int l;
2001                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
2002                         data += sizeof(dpmvertex_t);
2003                         for (k = 0;k < numweights;k++)
2004                         {
2005                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
2006                                 int boneindex = BigLong(vert->bonenum);
2007                                 const float *m = bonepose + 12 * boneindex;
2008                                 float influence = BigFloat(vert->influence);
2009                                 float relativeorigin[3], relativenormal[3];
2010                                 relativeorigin[0] = BigFloat(vert->origin[0]);
2011                                 relativeorigin[1] = BigFloat(vert->origin[1]);
2012                                 relativeorigin[2] = BigFloat(vert->origin[2]);
2013                                 relativenormal[0] = BigFloat(vert->normal[0]);
2014                                 relativenormal[1] = BigFloat(vert->normal[1]);
2015                                 relativenormal[2] = BigFloat(vert->normal[2]);
2016                                 // blend the vertex bone weights into the base mesh
2017                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
2018                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
2019                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
2020                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
2021                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
2022                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
2023                                 if (!k)
2024                                 {
2025                                         // store the first (and often only) weight
2026                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = influence;
2027                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
2028                                 }
2029                                 else
2030                                 {
2031                                         // sort the new weight into this vertex's weight table
2032                                         // (which only accepts up to 4 bones per vertex)
2033                                         for (l = 0;l < 4;l++)
2034                                         {
2035                                                 if (loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] < influence)
2036                                                 {
2037                                                         // move weaker influence weights out of the way first
2038                                                         int l2;
2039                                                         for (l2 = 3;l2 > l;l2--)
2040                                                         {
2041                                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2-1];
2042                                                                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2-1];
2043                                                         }
2044                                                         // store the new weight
2045                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] = influence;
2046                                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+l] = boneindex;
2047                                                         break;
2048                                                 }
2049                                         }
2050                                 }
2051                                 data += sizeof(dpmbonevert_t);
2052                         }
2053                         sum = 0;
2054                         for (l = 0;l < 4;l++)
2055                                 sum += loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l];
2056                         if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2057                         {
2058                                 float f = 1.0f / sum;
2059                                 for (l = 0;l < 4;l++)
2060                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] *= f;
2061                         }
2062                 }
2063
2064                 // since dpm models do not have named sections, reuse their shader name as the section name
2065                 if (dpmmesh->shadername[0])
2066                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
2067                 else
2068                         for (j = 0;j < loadmodel->numskins;j++)
2069                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
2070
2071                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
2072         }
2073         Z_Free(bonepose);
2074         Mod_FreeSkinFiles(skinfiles);
2075
2076         // compute all the mesh information that was not loaded from the file
2077         Mod_BuildBaseBonePoses();
2078         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);
2079         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2080
2081         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2082 }
2083
2084 // no idea why PSK/PSA files contain weird quaternions but they do...
2085 #define PSKQUATNEGATIONS
2086 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2087 {
2088         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
2089         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
2090         fs_offset_t filesize;
2091         pskpnts_t *pnts;
2092         pskvtxw_t *vtxw;
2093         pskface_t *faces;
2094         pskmatt_t *matts;
2095         pskboneinfo_t *bones;
2096         pskrawweights_t *rawweights;
2097         pskboneinfo_t *animbones;
2098         pskaniminfo_t *anims;
2099         pskanimkeys_t *animkeys;
2100         void *animfilebuffer, *animbuffer, *animbufferend;
2101         unsigned char *data;
2102         pskchunk_t *pchunk;
2103         skinfile_t *skinfiles;
2104         char animname[MAX_QPATH];
2105
2106         pchunk = (pskchunk_t *)buffer;
2107         if (strcmp(pchunk->id, "ACTRHEAD"))
2108                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2109
2110         loadmodel->modeldatatypestring = "PSK";
2111
2112         loadmodel->type = mod_alias;
2113         loadmodel->DrawSky = NULL;
2114         loadmodel->Draw = R_Q1BSP_Draw;
2115         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
2116         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
2117         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
2118         loadmodel->DrawLight = R_Q1BSP_DrawLight;
2119         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2120         loadmodel->synctype = ST_RAND;
2121
2122         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2123         strlcat(animname, ".psa", sizeof(animname));
2124         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2125         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2126         if (animbuffer == NULL)
2127                 Host_Error("%s: can't find .psa file (%s)", loadmodel->name, animname);
2128
2129         numpnts = 0;
2130         pnts = NULL;
2131         numvtxw = 0;
2132         vtxw = NULL;
2133         numfaces = 0;
2134         faces = NULL;
2135         nummatts = 0;
2136         matts = NULL;
2137         numbones = 0;
2138         bones = NULL;
2139         numrawweights = 0;
2140         rawweights = NULL;
2141         numanims = 0;
2142         anims = NULL;
2143         numanimkeys = 0;
2144         animkeys = NULL;
2145
2146         while (buffer < bufferend)
2147         {
2148                 pchunk = (pskchunk_t *)buffer;
2149                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2150                 version = LittleLong(pchunk->version);
2151                 recordsize = LittleLong(pchunk->recordsize);
2152                 numrecords = LittleLong(pchunk->numrecords);
2153                 if (developer.integer >= 100)
2154                         Con_Printf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2155                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2156                         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);
2157                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2158                 {
2159                         // nothing to do
2160                 }
2161                 else if (!strcmp(pchunk->id, "PNTS0000"))
2162                 {
2163                         pskpnts_t *p;
2164                         if (recordsize != sizeof(*p))
2165                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2166                         // byteswap in place and keep the pointer
2167                         numpnts = numrecords;
2168                         pnts = (pskpnts_t *)buffer;
2169                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2170                         {
2171                                 p->origin[0] = LittleFloat(p->origin[0]);
2172                                 p->origin[1] = LittleFloat(p->origin[1]);
2173                                 p->origin[2] = LittleFloat(p->origin[2]);
2174                         }
2175                         buffer = p;
2176                 }
2177                 else if (!strcmp(pchunk->id, "VTXW0000"))
2178                 {
2179                         pskvtxw_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                         numvtxw = numrecords;
2184                         vtxw = (pskvtxw_t *)buffer;
2185                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2186                         {
2187                                 p->pntsindex = LittleShort(p->pntsindex);
2188                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2189                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2190                                 if (p->pntsindex >= numpnts)
2191                                 {
2192                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2193                                         p->pntsindex = 0;
2194                                 }
2195                         }
2196                         buffer = p;
2197                 }
2198                 else if (!strcmp(pchunk->id, "FACE0000"))
2199                 {
2200                         pskface_t *p;
2201                         if (recordsize != sizeof(*p))
2202                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2203                         // byteswap in place and keep the pointer
2204                         numfaces = numrecords;
2205                         faces = (pskface_t *)buffer;
2206                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2207                         {
2208                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2209                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2210                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2211                                 p->group = LittleLong(p->group);
2212                                 if (p->vtxwindex[0] >= numvtxw)
2213                                 {
2214                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2215                                         p->vtxwindex[0] = 0;
2216                                 }
2217                                 if (p->vtxwindex[1] >= numvtxw)
2218                                 {
2219                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2220                                         p->vtxwindex[1] = 0;
2221                                 }
2222                                 if (p->vtxwindex[2] >= numvtxw)
2223                                 {
2224                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2225                                         p->vtxwindex[2] = 0;
2226                                 }
2227                         }
2228                         buffer = p;
2229                 }
2230                 else if (!strcmp(pchunk->id, "MATT0000"))
2231                 {
2232                         pskmatt_t *p;
2233                         if (recordsize != sizeof(*p))
2234                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2235                         // byteswap in place and keep the pointer
2236                         nummatts = numrecords;
2237                         matts = (pskmatt_t *)buffer;
2238                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2239                         {
2240                                 // nothing to do
2241                         }
2242                         buffer = p;
2243                 }
2244                 else if (!strcmp(pchunk->id, "REFSKELT"))
2245                 {
2246                         pskboneinfo_t *p;
2247                         if (recordsize != sizeof(*p))
2248                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2249                         // byteswap in place and keep the pointer
2250                         numbones = numrecords;
2251                         bones = (pskboneinfo_t *)buffer;
2252                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2253                         {
2254                                 p->numchildren = LittleLong(p->numchildren);
2255                                 p->parent = LittleLong(p->parent);
2256                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2257                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2258                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2259                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2260                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2261                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2262                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2263                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2264                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2265                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2266                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2267 #ifdef PSKQUATNEGATIONS
2268                                 if (index)
2269                                 {
2270                                         p->basepose.quat[0] *= -1;
2271                                         p->basepose.quat[1] *= -1;
2272                                         p->basepose.quat[2] *= -1;
2273                                 }
2274                                 else
2275                                 {
2276                                         p->basepose.quat[0] *=  1;
2277                                         p->basepose.quat[1] *= -1;
2278                                         p->basepose.quat[2] *=  1;
2279                                 }
2280 #endif
2281                                 if (p->parent < 0 || p->parent >= numbones)
2282                                 {
2283                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2284                                         p->parent = 0;
2285                                 }
2286                         }
2287                         buffer = p;
2288                 }
2289                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2290                 {
2291                         pskrawweights_t *p;
2292                         if (recordsize != sizeof(*p))
2293                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2294                         // byteswap in place and keep the pointer
2295                         numrawweights = numrecords;
2296                         rawweights = (pskrawweights_t *)buffer;
2297                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2298                         {
2299                                 p->weight = LittleFloat(p->weight);
2300                                 p->pntsindex = LittleLong(p->pntsindex);
2301                                 p->boneindex = LittleLong(p->boneindex);
2302                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2303                                 {
2304                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2305                                         p->pntsindex = 0;
2306                                 }
2307                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2308                                 {
2309                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2310                                         p->boneindex = 0;
2311                                 }
2312                         }
2313                         buffer = p;
2314                 }
2315         }
2316
2317         while (animbuffer < animbufferend)
2318         {
2319                 pchunk = (pskchunk_t *)animbuffer;
2320                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2321                 version = LittleLong(pchunk->version);
2322                 recordsize = LittleLong(pchunk->recordsize);
2323                 numrecords = LittleLong(pchunk->numrecords);
2324                 if (developer.integer >= 100)
2325                         Con_Printf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2326                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2327                         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);
2328                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2329                 {
2330                         // nothing to do
2331                 }
2332                 else if (!strcmp(pchunk->id, "BONENAMES"))
2333                 {
2334                         pskboneinfo_t *p;
2335                         if (recordsize != sizeof(*p))
2336                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2337                         // byteswap in place and keep the pointer
2338                         numanimbones = numrecords;
2339                         animbones = (pskboneinfo_t *)animbuffer;
2340                         // NOTE: supposedly psa does not need to match the psk model, the
2341                         // bones missing from the psa would simply use their base
2342                         // positions from the psk, but this is hard for me to implement
2343                         // and people can easily make animations that match.
2344                         if (numanimbones != numbones)
2345                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2346                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2347                         {
2348                                 p->numchildren = LittleLong(p->numchildren);
2349                                 p->parent = LittleLong(p->parent);
2350                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2351                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2352                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2353                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2354                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2355                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2356                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2357                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2358                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2359                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2360                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2361 #ifdef PSKQUATNEGATIONS
2362                                 if (index)
2363                                 {
2364                                         p->basepose.quat[0] *= -1;
2365                                         p->basepose.quat[1] *= -1;
2366                                         p->basepose.quat[2] *= -1;
2367                                 }
2368                                 else
2369                                 {
2370                                         p->basepose.quat[0] *=  1;
2371                                         p->basepose.quat[1] *= -1;
2372                                         p->basepose.quat[2] *=  1;
2373                                 }
2374 #endif
2375                                 if (p->parent < 0 || p->parent >= numanimbones)
2376                                 {
2377                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2378                                         p->parent = 0;
2379                                 }
2380                                 // check that bones are the same as in the base
2381                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2382                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2383                         }
2384                         animbuffer = p;
2385                 }
2386                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2387                 {
2388                         pskaniminfo_t *p;
2389                         if (recordsize != sizeof(*p))
2390                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2391                         // byteswap in place and keep the pointer
2392                         numanims = numrecords;
2393                         anims = (pskaniminfo_t *)animbuffer;
2394                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2395                         {
2396                                 p->numbones = LittleLong(p->numbones);
2397                                 p->playtime = LittleFloat(p->playtime);
2398                                 p->fps = LittleFloat(p->fps);
2399                                 p->firstframe = LittleLong(p->firstframe);
2400                                 p->numframes = LittleLong(p->numframes);
2401                                 if (p->numbones != numbones)
2402                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2403                         }
2404                         animbuffer = p;
2405                 }
2406                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2407                 {
2408                         pskanimkeys_t *p;
2409                         if (recordsize != sizeof(*p))
2410                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2411                         numanimkeys = numrecords;
2412                         animkeys = (pskanimkeys_t *)animbuffer;
2413                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2414                         {
2415                                 p->origin[0] = LittleFloat(p->origin[0]);
2416                                 p->origin[1] = LittleFloat(p->origin[1]);
2417                                 p->origin[2] = LittleFloat(p->origin[2]);
2418                                 p->quat[0] = LittleFloat(p->quat[0]);
2419                                 p->quat[1] = LittleFloat(p->quat[1]);
2420                                 p->quat[2] = LittleFloat(p->quat[2]);
2421                                 p->quat[3] = LittleFloat(p->quat[3]);
2422                                 p->frametime = LittleFloat(p->frametime);
2423 #ifdef PSKQUATNEGATIONS
2424                                 if (index % numbones)
2425                                 {
2426                                         p->quat[0] *= -1;
2427                                         p->quat[1] *= -1;
2428                                         p->quat[2] *= -1;
2429                                 }
2430                                 else
2431                                 {
2432                                         p->quat[0] *=  1;
2433                                         p->quat[1] *= -1;
2434                                         p->quat[2] *=  1;
2435                                 }
2436 #endif
2437                         }
2438                         animbuffer = p;
2439                         // TODO: allocate bonepose stuff
2440                 }
2441                 else
2442                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2443         }
2444
2445         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights || !numanims || !anims || !numanimkeys || !animkeys)
2446                 Host_Error("%s: missing required chunks", loadmodel->name);
2447
2448         loadmodel->numframes = 0;
2449         for (index = 0;index < numanims;index++)
2450                 loadmodel->numframes += anims[index].numframes;
2451
2452         if (numanimkeys != numbones * loadmodel->numframes)
2453                 Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2454
2455         meshvertices = numvtxw;
2456         meshtriangles = numfaces;
2457
2458         // load external .skin files if present
2459         skinfiles = Mod_LoadSkinFiles();
2460         if (loadmodel->numskins < 1)
2461                 loadmodel->numskins = 1;
2462         loadmodel->num_bones = numbones;
2463         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
2464         loadmodel->nummodelsurfaces = loadmodel->num_surfaces = nummatts;
2465         loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
2466         loadmodel->num_texturesperskin = loadmodel->num_surfaces;
2467         // do most allocations as one merged chunk
2468         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));
2469         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2470         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2471         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2472         loadmodel->surfmesh.num_vertices = meshvertices;
2473         loadmodel->surfmesh.num_triangles = meshtriangles;
2474         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2475         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2476         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
2477         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2478         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2479         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
2480         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
2481         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
2482         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
2483         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2484         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
2485         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2486         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2487         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2488
2489         for (i = 0;i < loadmodel->numskins;i++)
2490         {
2491                 loadmodel->skinscenes[i].firstframe = i;
2492                 loadmodel->skinscenes[i].framecount = 1;
2493                 loadmodel->skinscenes[i].loop = true;
2494                 loadmodel->skinscenes[i].framerate = 10;
2495         }
2496
2497         // create surfaces
2498         for (index = 0, i = 0;index < nummatts;index++)
2499         {
2500                 // since psk models do not have named sections, reuse their shader name as the section name
2501                 if (matts[index].name[0])
2502                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2503                 else
2504                         for (j = 0;j < loadmodel->numskins;j++)
2505                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + index + j * loadmodel->num_surfaces, NULL);
2506                 loadmodel->surfacelist[index] = index;
2507                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2508                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2509                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2510         }
2511
2512         // copy over the vertex locations and texcoords
2513         for (index = 0;index < numvtxw;index++)
2514         {
2515                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2516                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2517                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2518                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2519                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2520         }
2521
2522         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2523         for (index = 0;index < numfaces;index++)
2524                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2525         for (index = 0, i = 0;index < nummatts;index++)
2526         {
2527                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2528                 i += loadmodel->data_surfaces[index].num_triangles;
2529                 loadmodel->data_surfaces[index].num_triangles = 0;
2530         }
2531         for (index = 0;index < numfaces;index++)
2532         {
2533                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2534                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2535                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2536                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2537         }
2538
2539         // copy over the bones
2540         for (index = 0;index < numbones;index++)
2541         {
2542                 strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2543                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
2544                 if (loadmodel->data_bones[index].parent >= index)
2545                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
2546         }
2547
2548         // sort the psk point weights into the vertex weight tables
2549         // (which only accept up to 4 bones per vertex)
2550         for (index = 0;index < numvtxw;index++)
2551         {
2552                 int l;
2553                 float sum;
2554                 for (j = 0;j < numrawweights;j++)
2555                 {
2556                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
2557                         {
2558                                 int boneindex = rawweights[j].boneindex;
2559                                 float influence = rawweights[j].weight;
2560                                 for (l = 0;l < 4;l++)
2561                                 {
2562                                         if (loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] < influence)
2563                                         {
2564                                                 // move lower influence weights out of the way first
2565                                                 int l2;
2566                                                 for (l2 = 3;l2 > l;l2--)
2567                                                 {
2568                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2-1];
2569                                                         loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2-1];
2570                                                 }
2571                                                 // store the new weight
2572                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] = influence;
2573                                                 loadmodel->surfmesh.data_vertexweightindex4i[index*4+l] = boneindex;
2574                                                 break;
2575                                         }
2576                                 }
2577                         }
2578                 }
2579                 sum = 0;
2580                 for (l = 0;l < 4;l++)
2581                         sum += loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l];
2582                 if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2583                 {
2584                         float f = 1.0f / sum;
2585                         for (l = 0;l < 4;l++)
2586                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] *= f;
2587                 }
2588         }
2589
2590         // set up the animscenes based on the anims
2591         for (index = 0, i = 0;index < numanims;index++)
2592         {
2593                 for (j = 0;j < anims[index].numframes;j++, i++)
2594                 {
2595                         dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
2596                         loadmodel->animscenes[i].firstframe = i;
2597                         loadmodel->animscenes[i].framecount = 1;
2598                         loadmodel->animscenes[i].loop = true;
2599                         loadmodel->animscenes[i].framerate = 10;
2600                 }
2601         }
2602
2603         // load the poses from the animkeys
2604         for (index = 0;index < numanimkeys;index++)
2605         {
2606                 pskanimkeys_t *k = animkeys + index;
2607                 matrix4x4_t matrix;
2608                 Matrix4x4_FromOriginQuat(&matrix, k->origin[0], k->origin[1], k->origin[2], k->quat[0], k->quat[1], k->quat[2], k->quat[3]);
2609                 Matrix4x4_ToArray12FloatD3D(&matrix, loadmodel->data_poses + index*12);
2610         }
2611         Mod_FreeSkinFiles(skinfiles);
2612         Mem_Free(animfilebuffer);
2613
2614         // compute all the mesh information that was not loaded from the file
2615         // TODO: honor smoothing groups somehow?
2616         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2617         Mod_BuildBaseBonePoses();
2618         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
2619         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);
2620         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2621         Mod_Alias_CalculateBoundingBox();
2622
2623         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2624 }
2625