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 static cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0"};
  26
  27 void Mod_AliasInit (void)
  28 {
  29         Cvar_RegisterVariable(&r_mipskins);
  30 }
  31
  32 static void Mod_CalcAliasModelBBoxes (void)
  33 {
  34         int vnum, meshnum;
  35         float dist, yawradius, radius;
  36         aliasmesh_t *mesh;
  37         aliasvertex_t *v;
  38         VectorClear(loadmodel->normalmins);
  39         VectorClear(loadmodel->normalmaxs);
  40         yawradius = 0;
  41         radius = 0;
  42         for (meshnum = 0, mesh = loadmodel->aliasdata_meshes;meshnum < loadmodel->aliasnum_meshes;meshnum++, mesh++)
  43         {
  44                 for (vnum = 0, v = mesh->data_aliasvertex;vnum < mesh->num_vertices * mesh->num_frames;vnum++, v++)
  45                 {
  46                         if (loadmodel->normalmins[0] > v->origin[0]) loadmodel->normalmins[0] = v->origin[0];
  47                         if (loadmodel->normalmins[1] > v->origin[1]) loadmodel->normalmins[1] = v->origin[1];
  48                         if (loadmodel->normalmins[2] > v->origin[2]) loadmodel->normalmins[2] = v->origin[2];
  49                         if (loadmodel->normalmaxs[0] < v->origin[0]) loadmodel->normalmaxs[0] = v->origin[0];
  50                         if (loadmodel->normalmaxs[1] < v->origin[1]) loadmodel->normalmaxs[1] = v->origin[1];
  51                         if (loadmodel->normalmaxs[2] < v->origin[2]) loadmodel->normalmaxs[2] = v->origin[2];
  52                         dist = v->origin[0] * v->origin[0] + v->origin[1] * v->origin[1];
  53                         if (yawradius < dist)
  54                                 yawradius = dist;
  55                         dist += v->origin[2] * v->origin[2];
  56                         if (radius < dist)
  57                                 radius = dist;
  58                 }
  59         }
  60         radius = sqrt(radius);
  61         yawradius = sqrt(yawradius);
  62         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
  63         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
  64         loadmodel->yawmins[2] = loadmodel->normalmins[2];
  65         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
  66         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
  67         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
  68         loadmodel->radius = radius;
  69         loadmodel->radius2 = radius * radius;
  70 }
  71
  72 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int *vertremap)
  73 {
  74         int i, j;
  75         vec3_t temp;
  76         for (i = 0;i < inverts;i++)
  77         {
  78                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  79                         continue;
  80                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  81                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  82                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  83                 j = vertremap[i]; // not onseam
  84                 if (j >= 0)
  85                         VectorCopy(temp, out[j].origin);
  86                 j = vertremap[i+inverts]; // onseam
  87                 if (j >= 0)
  88                         VectorCopy(temp, out[j].origin);
  89         }
  90 }
  91
  92 static void Mod_BuildAliasVertexTextureVectors(int numverts, aliasvertex_t *vertices, const float *texcoords, float *vertexbuffer, float *svectorsbuffer, float *tvectorsbuffer, float *normalsbuffer, int numtriangles, const int *elements)
  93 {
  94         int i;
  95         for (i = 0;i < numverts;i++)
  96                 VectorCopy(vertices[i].origin, &vertexbuffer[i * 3]);
  97         Mod_BuildTextureVectorsAndNormals(numverts, numtriangles, vertexbuffer, texcoords, elements, svectorsbuffer, tvectorsbuffer, normalsbuffer);
  98         for (i = 0;i < numverts;i++)
  99         {
 100                 vertices[i].normal[0] = normalsbuffer[i * 3 + 0];
 101                 vertices[i].normal[1] = normalsbuffer[i * 3 + 1];
 102                 vertices[i].normal[2] = normalsbuffer[i * 3 + 2];
 103                 vertices[i].svector[0] = svectorsbuffer[i * 3 + 0];
 104                 vertices[i].svector[1] = svectorsbuffer[i * 3 + 1];
 105                 vertices[i].svector[2] = svectorsbuffer[i * 3 + 2];
 106         }
 107 }
 108
 109 static void Mod_MDL_LoadFrames (qbyte* datapointer, int inverts, int outverts, vec3_t scale, vec3_t translate, float *texcoords, aliasvertex_t *posedata, int numtris, int *elements, int *vertremap)
 110 {
 111         int i, f, pose, groupframes;
 112         float interval, *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 113         daliasframetype_t *pframetype;
 114         daliasframe_t *pinframe;
 115         daliasgroup_t *group;
 116         daliasinterval_t *intervals;
 117         animscene_t *scene;
 118         pose = 0;
 119         scene = loadmodel->animscenes;
 120         vertexbuffer = Mem_Alloc(tempmempool, outverts * sizeof(float[3+3+3+3]));
 121         svectorsbuffer = vertexbuffer + outverts * 3;
 122         tvectorsbuffer = svectorsbuffer + outverts * 3;
 123         normalsbuffer = tvectorsbuffer + outverts * 3;
 124         for (f = 0;f < loadmodel->numframes;f++)
 125         {
 126                 pframetype = (daliasframetype_t *)datapointer;
 127                 datapointer += sizeof(daliasframetype_t);
 128                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 129                 {
 130                         // a single frame is still treated as a group
 131                         interval = 0.1f;
 132                         groupframes = 1;
 133                 }
 134                 else
 135                 {
 136                         // read group header
 137                         group = (daliasgroup_t *)datapointer;
 138                         datapointer += sizeof(daliasgroup_t);
 139                         groupframes = LittleLong (group->numframes);
 140
 141                         // intervals (time per frame)
 142                         intervals = (daliasinterval_t *)datapointer;
 143                         datapointer += sizeof(daliasinterval_t) * groupframes;
 144
 145                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 146                         if (interval < 0.01f)
 147                                 Host_Error("Mod_MDL_LoadFrames: invalid interval");
 148                 }
 149
 150                 // get scene name from first frame
 151                 pinframe = (daliasframe_t *)datapointer;
 152
 153                 strcpy(scene->name, pinframe->name);
 154                 scene->firstframe = pose;
 155                 scene->framecount = groupframes;
 156                 scene->framerate = 1.0f / interval;
 157                 scene->loop = true;
 158                 scene++;
 159
 160                 // read frames
 161                 for (i = 0;i < groupframes;i++)
 162                 {
 163                         pinframe = (daliasframe_t *)datapointer;
 164                         datapointer += sizeof(daliasframe_t);
 165                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, posedata + pose * outverts, vertremap);
 166                         Mod_BuildAliasVertexTextureVectors(outverts, posedata + pose * outverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 167                         datapointer += sizeof(trivertx_t) * inverts;
 168                         pose++;
 169                 }
 170         }
 171         Mem_Free(vertexbuffer);
 172 }
 173
 174 void Mod_BuildAliasSkinFromSkinFrame(aliasskin_t *skin, skinframe_t *skinframe)
 175 {
 176         aliaslayer_t *layer;
 177         skin->flags = 0;
 178         // fog texture only exists if some pixels are transparent...
 179         if (skinframe->fog != NULL)
 180                 skin->flags |= ALIASSKIN_TRANSPARENT;
 181         // fog and gloss layers always exist
 182         skin->num_layers = 2;
 183         if (skinframe->glow != NULL)
 184                 skin->num_layers++;
 185         if (skinframe->merged != NULL)
 186                 skin->num_layers += 2;
 187         if (skinframe->base != NULL)
 188                 skin->num_layers += 2;
 189         if (skinframe->pants != NULL)
 190                 skin->num_layers += 2;
 191         if (skinframe->shirt != NULL)
 192                 skin->num_layers += 2;
 193         layer = skin->data_layers = Mem_Alloc(loadmodel->mempool, skin->num_layers * sizeof(aliaslayer_t));
 194         if (skinframe->glow != NULL)
 195         {
 196                 layer->flags = 0;
 197                 layer->texture = skinframe->glow;
 198                 layer++;
 199         }
 200         if (skinframe->merged != NULL)
 201         {
 202                 layer->flags = ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 203                 if (skinframe->glow != NULL)
 204                         layer->flags |= ALIASLAYER_ADD;
 205                 layer->texture = skinframe->merged;
 206                 layer->nmap = skinframe->nmap;
 207                 layer++;
 208         }
 209         if (skinframe->base != NULL)
 210         {
 211                 layer->flags = (skinframe->merged != NULL ? ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED : 0) | ALIASLAYER_DIFFUSE;
 212                 if (skinframe->glow != NULL)
 213                         layer->flags |= ALIASLAYER_ADD;
 214                 layer->texture = skinframe->base;
 215                 layer->nmap = skinframe->nmap;
 216                 layer++;
 217         }
 218         if (skinframe->pants != NULL)
 219         {
 220                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 221                 if (skinframe->glow != NULL || skinframe->base != NULL)
 222                         layer->flags |= ALIASLAYER_ADD;
 223                 layer->texture = skinframe->pants;
 224                 layer->nmap = skinframe->nmap;
 225                 layer++;
 226         }
 227         if (skinframe->shirt != NULL)
 228         {
 229                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 230                 if (skinframe->glow != NULL || skinframe->base != NULL || skinframe->pants != NULL)
 231                         layer->flags |= ALIASLAYER_ADD;
 232                 layer->texture = skinframe->shirt;
 233                 layer->nmap = skinframe->nmap;
 234                 layer++;
 235         }
 236         layer->flags = ALIASLAYER_FOG;
 237         layer->texture = skinframe->fog;
 238         layer++;
 239         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_SPECULAR;
 240         layer->texture = skinframe->gloss;
 241         layer->nmap = skinframe->nmap;
 242         layer++;
 243         if (skinframe->merged != NULL)
 244         {
 245                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 246                 layer->texture = skinframe->merged;
 247                 layer->nmap = skinframe->nmap;
 248                 layer++;
 249         }
 250         if (skinframe->base != NULL)
 251         {
 252                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | (skinframe->merged != NULL ? ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED : 0) | ALIASLAYER_DIFFUSE;
 253                 layer->texture = skinframe->base;
 254                 layer->nmap = skinframe->nmap;
 255                 layer++;
 256         }
 257         if (skinframe->pants != NULL)
 258         {
 259                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_PANTS;
 260                 layer->texture = skinframe->pants;
 261                 layer->nmap = skinframe->nmap;
 262                 layer++;
 263         }
 264         if (skinframe->shirt != NULL)
 265         {
 266                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 267                 layer->texture = skinframe->shirt;
 268                 layer->nmap = skinframe->nmap;
 269                 layer++;
 270         }
 271 }
 272
 273 void Mod_BuildMDLMD2MeshInfo(int numverts, int numtris, int *elements, float *texcoord2f, aliasvertex_t *posedata)
 274 {
 275         int i;
 276         aliasmesh_t *mesh;
 277
 278         loadmodel->aliasnum_meshes = 1;
 279         mesh = loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 280         mesh->num_skins = 0;
 281         mesh->num_frames = 0;
 282         for (i = 0;i < loadmodel->numframes;i++)
 283                 mesh->num_frames += loadmodel->animscenes[i].framecount;
 284         for (i = 0;i < loadmodel->numskins;i++)
 285                 mesh->num_skins += loadmodel->skinscenes[i].framecount;
 286         mesh->num_triangles = numtris;
 287         mesh->num_vertices = numverts;
 288         mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 289         mesh->data_element3i = elements;
 290         mesh->data_neighbor3i = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 291         Mod_ValidateElements(mesh->data_element3i, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 292         Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
 293         mesh->data_texcoord2f = texcoord2f;
 294         mesh->data_aliasvertex = posedata;
 295         for (i = 0;i < mesh->num_skins;i++)
 296                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins + i, loadmodel->skinframes + i);
 297         Mod_CalcAliasModelBBoxes();
 298 }
 299
 300 #define BOUNDI(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%d exceeds %d - %d)\n", loadmodel->name, VALUE, MIN, MAX);
 301 #define BOUNDF(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%f exceeds %f - %f)\n", loadmodel->name, VALUE, MIN, MAX);
 302 extern void R_Model_Alias_Draw(entity_render_t *ent);
 303 extern void R_Model_Alias_DrawFakeShadow(entity_render_t *ent);
 304 extern void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 305 extern void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
 306 void Mod_LoadQ1AliasModel (model_t *mod, void *buffer)
 307 {
 308         int i, j, version, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins, *elements, numverts, numtris;
 309         float scales, scalet, scale[3], translate[3], interval, *texcoords;
 310         mdl_t *pinmodel;
 311         stvert_t *pinstverts;
 312         dtriangle_t *pintriangles;
 313         daliasskintype_t *pinskintype;
 314         daliasskingroup_t *pinskingroup;
 315         daliasskininterval_t *pinskinintervals;
 316         daliasframetype_t *pinframetype;
 317         daliasgroup_t *pinframegroup;
 318         aliasvertex_t *posedata;
 319         qbyte *datapointer, *startframes, *startskins;
 320         char name[MAX_QPATH];
 321         skinframe_t tempskinframe;
 322         animscene_t *tempskinscenes;
 323         skinframe_t *tempskinframes;
 324         float *vertst;
 325         int *vertonseam, *vertusage, *vertremap, *temptris;
 326
 327         datapointer = buffer;
 328         pinmodel = (mdl_t *)datapointer;
 329         datapointer += sizeof(mdl_t);
 330
 331         version = LittleLong (pinmodel->version);
 332         if (version != ALIAS_VERSION)
 333                 Host_Error ("%s has wrong version number (%i should be %i)",
 334                                  loadmodel->name, version, ALIAS_VERSION);
 335
 336         loadmodel->type = mod_alias;
 337         loadmodel->aliastype = ALIASTYPE_ALIAS;
 338         loadmodel->DrawSky = NULL;
 339         loadmodel->Draw = R_Model_Alias_Draw;
 340         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 341         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 342         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 343
 344         loadmodel->numskins = LittleLong(pinmodel->numskins);
 345         BOUNDI(loadmodel->numskins,0,256);
 346         skinwidth = LittleLong (pinmodel->skinwidth);
 347         BOUNDI(skinwidth,0,4096);
 348         skinheight = LittleLong (pinmodel->skinheight);
 349         BOUNDI(skinheight,0,4096);
 350         numverts = LittleLong(pinmodel->numverts);
 351         BOUNDI(numverts,0,65536);
 352         numtris = LittleLong(pinmodel->numtris);
 353         BOUNDI(numtris,0,65536 / 3); // max elements limit, rather than max triangles limit
 354         loadmodel->numframes = LittleLong(pinmodel->numframes);
 355         BOUNDI(loadmodel->numframes,0,65536);
 356         loadmodel->synctype = LittleLong (pinmodel->synctype);
 357         BOUNDI(loadmodel->synctype,0,2);
 358         loadmodel->flags = LittleLong (pinmodel->flags);
 359
 360         for (i = 0;i < 3;i++)
 361         {
 362                 scale[i] = LittleFloat (pinmodel->scale[i]);
 363                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 364         }
 365
 366         startskins = datapointer;
 367         totalskins = 0;
 368         for (i = 0;i < loadmodel->numskins;i++)
 369         {
 370                 pinskintype = (daliasskintype_t *)datapointer;
 371                 datapointer += sizeof(daliasskintype_t);
 372                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 373                         groupskins = 1;
 374                 else
 375                 {
 376                         pinskingroup = (daliasskingroup_t *)datapointer;
 377                         datapointer += sizeof(daliasskingroup_t);
 378                         groupskins = LittleLong(pinskingroup->numskins);
 379                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 380                 }
 381
 382                 for (j = 0;j < groupskins;j++)
 383                 {
 384                         datapointer += skinwidth * skinheight;
 385                         totalskins++;
 386                 }
 387         }
 388
 389         pinstverts = (stvert_t *)datapointer;
 390         datapointer += sizeof(stvert_t) * numverts;
 391
 392         pintriangles = (dtriangle_t *)datapointer;
 393         datapointer += sizeof(dtriangle_t) * numtris;
 394
 395         startframes = datapointer;
 396         totalposes = 0;
 397         for (i = 0;i < loadmodel->numframes;i++)
 398         {
 399                 pinframetype = (daliasframetype_t *)datapointer;
 400                 datapointer += sizeof(daliasframetype_t);
 401                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 402                         groupframes = 1;
 403                 else
 404                 {
 405                         pinframegroup = (daliasgroup_t *)datapointer;
 406                         datapointer += sizeof(daliasgroup_t);
 407                         groupframes = LittleLong(pinframegroup->numframes);
 408                         datapointer += sizeof(daliasinterval_t) * groupframes;
 409                 }
 410
 411                 for (j = 0;j < groupframes;j++)
 412                 {
 413                         datapointer += sizeof(daliasframe_t);
 414                         datapointer += sizeof(trivertx_t) * numverts;
 415                         totalposes++;
 416                 }
 417         }
 418
 419         // load the skins
 420         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 421         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 422         totalskins = 0;
 423         datapointer = startskins;
 424         for (i = 0;i < loadmodel->numskins;i++)
 425         {
 426                 pinskintype = (daliasskintype_t *)datapointer;
 427                 datapointer += sizeof(daliasskintype_t);
 428
 429                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 430                 {
 431                         groupskins = 1;
 432                         interval = 0.1f;
 433                 }
 434                 else
 435                 {
 436                         pinskingroup = (daliasskingroup_t *)datapointer;
 437                         datapointer += sizeof(daliasskingroup_t);
 438
 439                         groupskins = LittleLong (pinskingroup->numskins);
 440
 441                         pinskinintervals = (daliasskininterval_t *)datapointer;
 442                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 443
 444                         interval = LittleFloat(pinskinintervals[0].interval);
 445                         if (interval < 0.01f)
 446                                 Host_Error("Mod_LoadQ1AliasModel: invalid interval\n");
 447                 }
 448
 449                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 450                 loadmodel->skinscenes[i].firstframe = totalskins;
 451                 loadmodel->skinscenes[i].framecount = groupskins;
 452                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 453                 loadmodel->skinscenes[i].loop = true;
 454
 455                 for (j = 0;j < groupskins;j++)
 456                 {
 457                         if (groupskins > 1)
 458                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 459                         else
 460                                 sprintf (name, "%s_%i", loadmodel->name, i);
 461                         if (!Mod_LoadSkinFrame(loadmodel->skinframes + totalskins, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true))
 462                                 Mod_LoadSkinFrame_Internal(loadmodel->skinframes + totalskins, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true, (qbyte *)datapointer, skinwidth, skinheight);
 463                         datapointer += skinwidth * skinheight;
 464                         totalskins++;
 465                 }
 466         }
 467         // check for skins that don't exist in the model, but do exist as external images
 468         // (this was added because yummyluv kept pestering me about support for it)
 469         for (;;)
 470         {
 471                 sprintf (name, "%s_%i", loadmodel->name, loadmodel->numskins);
 472                 if (Mod_LoadSkinFrame (&tempskinframe, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true))
 473                 {
 474                         // expand the arrays to make room
 475                         tempskinscenes = loadmodel->skinscenes;
 476                         tempskinframes = loadmodel->skinframes;
 477                         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 478                         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, (totalskins + 1) * sizeof(skinframe_t));
 479                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 480                         memcpy(loadmodel->skinframes, tempskinframes, totalskins * sizeof(skinframe_t));
 481                         Mem_Free(tempskinscenes);
 482                         Mem_Free(tempskinframes);
 483                         // store the info about the new skin
 484                         strcpy(loadmodel->skinscenes[loadmodel->numskins].name, name);
 485                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 486                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 487                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 488                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 489                         loadmodel->skinframes[totalskins] = tempskinframe;
 490                         loadmodel->numskins++;
 491                         totalskins++;
 492                 }
 493                 else
 494                         break;
 495         }
 496
 497         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 498         vertst = Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
 499         vertonseam = Mem_Alloc(tempmempool, numverts * sizeof(int));
 500         vertusage = Mem_Alloc(tempmempool, numverts * 2 * sizeof(int));
 501         vertremap = Mem_Alloc(tempmempool, numverts * 2 * sizeof(int));
 502         temptris = Mem_Alloc(tempmempool, numtris * sizeof(int[3]));
 503
 504         scales = 1.0 / skinwidth;
 505         scalet = 1.0 / skinheight;
 506         for (i = 0;i < numverts;i++)
 507         {
 508                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 509                 vertst[i*2+0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 510                 vertst[i*2+1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 511                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
 512                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
 513                 vertusage[i] = 0;
 514                 vertusage[i+numverts] = 0;
 515         }
 516
 517 // load triangle data
 518         elements = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * numtris);
 519
 520         // count the vertices used
 521         for (i = 0;i < numverts*2;i++)
 522                 vertusage[i] = 0;
 523         for (i = 0;i < numtris;i++)
 524         {
 525                 temptris[i*3+0] = LittleLong(pintriangles[i].vertindex[0]);
 526                 temptris[i*3+1] = LittleLong(pintriangles[i].vertindex[1]);
 527                 temptris[i*3+2] = LittleLong(pintriangles[i].vertindex[2]);
 528                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 529                 {
 530                         if (vertonseam[temptris[i*3+0]]) temptris[i*3+0] += numverts;
 531                         if (vertonseam[temptris[i*3+1]]) temptris[i*3+1] += numverts;
 532                         if (vertonseam[temptris[i*3+2]]) temptris[i*3+2] += numverts;
 533                 }
 534                 vertusage[temptris[i*3+0]]++;
 535                 vertusage[temptris[i*3+1]]++;
 536                 vertusage[temptris[i*3+2]]++;
 537         }
 538         // build remapping table and compact array
 539         totalverts = 0;
 540         for (i = 0;i < numverts*2;i++)
 541         {
 542                 if (vertusage[i])
 543                 {
 544                         vertremap[i] = totalverts;
 545                         vertst[totalverts*2+0] = vertst[i*2+0];
 546                         vertst[totalverts*2+1] = vertst[i*2+1];
 547                         totalverts++;
 548                 }
 549                 else
 550                         vertremap[i] = -1; // not used at all
 551         }
 552         // remap the triangle references
 553         for (i = 0;i < numtris * 3;i++)
 554                 elements[i] = vertremap[temptris[i]];
 555         // store the texture coordinates
 556         texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * totalverts);
 557         for (i = 0;i < totalverts;i++)
 558         {
 559                 texcoords[i*2+0] = vertst[i*2+0];
 560                 texcoords[i*2+1] = vertst[i*2+1];
 561         }
 562
 563 // load the frames
 564         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 565         posedata = Mem_Alloc(loadmodel->mempool, sizeof(aliasvertex_t) * totalposes * totalverts);
 566         Mod_MDL_LoadFrames (startframes, numverts, totalverts, scale, translate, texcoords, posedata, numtris, elements, vertremap);
 567         Mod_BuildMDLMD2MeshInfo(totalverts, numtris, elements, texcoords, posedata);
 568
 569         Mem_Free(vertst);
 570         Mem_Free(vertonseam);
 571         Mem_Free(vertusage);
 572         Mem_Free(vertremap);
 573         Mem_Free(temptris);
 574 }
 575
 576 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int numverts, int *vertremap)
 577 {
 578         int i;
 579         trivertx_t *in;
 580         for (i = 0;i < numverts;i++)
 581         {
 582                 in = v + vertremap[i];
 583                 out[i].origin[0] = in->v[0] * scale[0] + translate[0];
 584                 out[i].origin[1] = in->v[1] * scale[1] + translate[1];
 585                 out[i].origin[2] = in->v[2] * scale[2] + translate[2];
 586         }
 587 }
 588
 589 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 590 {
 591         int i, j, k, hashindex, num, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end, *elements, numverts, numtris;
 592         float *stverts, s, t, scale[3], translate[3], *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer, *texcoords;
 593         aliasvertex_t *posedata;
 594         md2_t *pinmodel;
 595         qbyte *base, *datapointer;
 596         md2frame_t *pinframe;
 597         char *inskin;
 598         md2triangle_t *intri;
 599         unsigned short *inst;
 600         struct md2verthash_s
 601         {
 602                 struct md2verthash_s *next;
 603                 int xyz;
 604                 float st[2];
 605         }
 606         *hash, **md2verthash, *md2verthashdata;
 607
 608         pinmodel = buffer;
 609         base = buffer;
 610
 611         version = LittleLong (pinmodel->version);
 612         if (version != MD2ALIAS_VERSION)
 613                 Host_Error ("%s has wrong version number (%i should be %i)",
 614                         loadmodel->name, version, MD2ALIAS_VERSION);
 615
 616         loadmodel->type = mod_alias;
 617         loadmodel->aliastype = ALIASTYPE_ALIAS;
 618         loadmodel->DrawSky = NULL;
 619         loadmodel->Draw = R_Model_Alias_Draw;
 620         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 621         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 622         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 623
 624         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > (65536 / 3))
 625                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 626         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > 65536)
 627                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 628         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > 65536)
 629                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 630         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > 256)
 631                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 632
 633         end = LittleLong(pinmodel->ofs_end);
 634         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 635                 Host_Error ("%s is not a valid model", loadmodel->name);
 636         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 637                 Host_Error ("%s is not a valid model", loadmodel->name);
 638         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 639                 Host_Error ("%s is not a valid model", loadmodel->name);
 640         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 641                 Host_Error ("%s is not a valid model", loadmodel->name);
 642         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 643                 Host_Error ("%s is not a valid model", loadmodel->name);
 644
 645         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 646         numxyz = LittleLong(pinmodel->num_xyz);
 647         numst = LittleLong(pinmodel->num_st);
 648         numtris = LittleLong(pinmodel->num_tris);
 649         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 650
 651         loadmodel->flags = 0; // there are no MD2 flags
 652         loadmodel->synctype = ST_RAND;
 653
 654         // load the skins
 655         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 656         if (loadmodel->numskins)
 657         {
 658                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins + sizeof(skinframe_t) * loadmodel->numskins);
 659                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + loadmodel->numskins);
 660                 for (i = 0;i < loadmodel->numskins;i++)
 661                 {
 662                         loadmodel->skinscenes[i].firstframe = i;
 663                         loadmodel->skinscenes[i].framecount = 1;
 664                         loadmodel->skinscenes[i].loop = true;
 665                         loadmodel->skinscenes[i].framerate = 10;
 666                         Mod_LoadSkinFrame (loadmodel->skinframes + i, inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE, true, false, true);
 667                         inskin += MD2_SKINNAME;
 668                 }
 669         }
 670
 671         // load the triangles and stvert data
 672         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 673         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 674         skinwidth = LittleLong(pinmodel->skinwidth);
 675         skinheight = LittleLong(pinmodel->skinheight);
 676
 677         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 678         s = 1.0f / skinwidth;
 679         t = 1.0f / skinheight;
 680         for (i = 0;i < numst;i++)
 681         {
 682                 j = (unsigned short) LittleShort(inst[i*2+0]);
 683                 k = (unsigned short) LittleShort(inst[i*2+1]);
 684                 if (j >= skinwidth || k >= skinheight)
 685                 {
 686                         Mem_Free(stverts);
 687                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 688                 }
 689                 stverts[i*2+0] = j * s;
 690                 stverts[i*2+1] = k * t;
 691         }
 692
 693         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 694         md2verthashdata = Mem_Alloc(tempmempool, numtris * 3 * sizeof(*hash));
 695         // swap the triangle list
 696         num = 0;
 697         elements = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 698         for (i = 0;i < numtris;i++)
 699         {
 700                 for (j = 0;j < 3;j++)
 701                 {
 702                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 703                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 704                         if (xyz >= numxyz || st >= numst)
 705                         {
 706                                 Mem_Free(md2verthash);
 707                                 Mem_Free(md2verthashdata);
 708                                 Mem_Free(stverts);
 709                                 if (xyz >= numxyz)
 710                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 711                                 if (st >= numst)
 712                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 713                         }
 714                         s = stverts[st*2+0];
 715                         t = stverts[st*2+1];
 716                         hashindex = (xyz * 17 + st) & 255;
 717                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 718                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 719                                         break;
 720                         if (hash == NULL)
 721                         {
 722                                 hash = md2verthashdata + num++;
 723                                 hash->xyz = xyz;
 724                                 hash->st[0] = s;
 725                                 hash->st[1] = t;
 726                                 hash->next = md2verthash[hashindex];
 727                                 md2verthash[hashindex] = hash;
 728                         }
 729                         elements[i*3+j] = (hash - md2verthashdata);
 730                 }
 731         }
 732
 733         Mem_Free(stverts);
 734
 735         numverts = num;
 736         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 737         texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[2]));
 738         for (i = 0;i < num;i++)
 739         {
 740                 hash = md2verthashdata + i;
 741                 vertremap[i] = hash->xyz;
 742                 texcoords[i*2+0] = hash->st[0];
 743                 texcoords[i*2+1] = hash->st[1];
 744         }
 745
 746         Mem_Free(md2verthash);
 747         Mem_Free(md2verthashdata);
 748
 749         // load the frames
 750         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 751         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 752         posedata = Mem_Alloc(loadmodel->mempool, numverts * loadmodel->numframes * sizeof(trivertx_t));
 753
 754         vertexbuffer = Mem_Alloc(tempmempool, numverts * sizeof(float[3+3+3+3]));
 755         svectorsbuffer = vertexbuffer + numverts * 3;
 756         tvectorsbuffer = svectorsbuffer + numverts * 3;
 757         normalsbuffer = tvectorsbuffer + numverts * 3;
 758         for (i = 0;i < loadmodel->numframes;i++)
 759         {
 760                 pinframe = (md2frame_t *)datapointer;
 761                 datapointer += sizeof(md2frame_t);
 762                 for (j = 0;j < 3;j++)
 763                 {
 764                         scale[j] = LittleFloat(pinframe->scale[j]);
 765                         translate[j] = LittleFloat(pinframe->translate[j]);
 766                 }
 767                 Mod_MD2_ConvertVerts(scale, translate, (void *)datapointer, posedata + i * numverts, numverts, vertremap);
 768                 Mod_BuildAliasVertexTextureVectors(numverts, posedata + i * numverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 769                 datapointer += numxyz * sizeof(trivertx_t);
 770
 771                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 772                 loadmodel->animscenes[i].firstframe = i;
 773                 loadmodel->animscenes[i].framecount = 1;
 774                 loadmodel->animscenes[i].framerate = 10;
 775                 loadmodel->animscenes[i].loop = true;
 776         }
 777         Mem_Free(vertexbuffer);
 778
 779         Mem_Free(vertremap);
 780
 781         Mod_BuildMDLMD2MeshInfo(numverts, numtris, elements, texcoords, posedata);
 782 }
 783
 784 void Mod_LoadQ3AliasModel(model_t *mod, void *buffer)
 785 {
 786         int i, j, version;
 787         float *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 788         md3modelheader_t *pinmodel;
 789         md3frameinfo_t *pinframe;
 790         md3mesh_t *pinmesh;
 791         aliasmesh_t *mesh;
 792         skinframe_t tempskinframe;
 793
 794         pinmodel = buffer;
 795
 796         if (memcmp(pinmodel->identifier, "IDP3", 4))
 797                 Host_Error ("%s is not a MD3 (IDP3) file\n", loadmodel->name);
 798         version = LittleLong (pinmodel->version);
 799         if (version != MD3VERSION)
 800                 Host_Error ("%s has wrong version number (%i should be %i)",
 801                         loadmodel->name, version, MD3VERSION);
 802
 803         loadmodel->type = mod_alias;
 804         loadmodel->aliastype = ALIASTYPE_ALIAS;
 805         loadmodel->DrawSky = NULL;
 806         loadmodel->Draw = R_Model_Alias_Draw;
 807         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 808         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 809         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 810         loadmodel->flags = 0;
 811         loadmodel->synctype = ST_RAND;
 812
 813         // set up some global info about the model
 814         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 815         loadmodel->numskins = 1;
 816         loadmodel->aliasnum_meshes = LittleLong(pinmodel->num_meshes);
 817         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 818         loadmodel->skinscenes[0].firstframe = 0;
 819         loadmodel->skinscenes[0].framecount = 1;
 820         loadmodel->skinscenes[0].loop = true;
 821         loadmodel->skinscenes[0].framerate = 10;
 822
 823         // load frameinfo
 824         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 825         for (i = 0, pinframe = (md3frameinfo_t *)((qbyte *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
 826         {
 827                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 828                 loadmodel->animscenes[i].firstframe = i;
 829                 loadmodel->animscenes[i].framecount = 1;
 830                 loadmodel->animscenes[i].framerate = 10;
 831                 loadmodel->animscenes[i].loop = true;
 832         }
 833
 834         // tags are not loaded yet
 835
 836         // load meshes
 837         loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 838         for (i = 0, pinmesh = (md3mesh_t *)((qbyte *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->aliasnum_meshes;i++, pinmesh = (md3mesh_t *)((qbyte *)pinmesh + LittleLong(pinmesh->lump_end)))
 839         {
 840                 if (memcmp(pinmesh->identifier, "IDP3", 4))
 841                         Host_Error("Mod_LoadQ3AliasModel: invalid mesh identifier (not IDP3)\n");
 842                 mesh = loadmodel->aliasdata_meshes + i;
 843                 mesh->num_skins = loadmodel->numskins;
 844                 mesh->num_frames = LittleLong(pinmesh->num_frames);
 845                 mesh->num_vertices = LittleLong(pinmesh->num_vertices);
 846                 mesh->num_triangles = LittleLong(pinmesh->num_triangles);
 847                 mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 848                 mesh->data_element3i = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 849                 mesh->data_neighbor3i = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 850                 mesh->data_texcoord2f = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * sizeof(float[2]));
 851                 mesh->data_aliasvertex = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * mesh->num_frames * sizeof(aliasvertex_t));
 852                 for (j = 0;j < mesh->num_triangles * 3;j++)
 853                         mesh->data_element3i[j] = LittleLong(((int *)((qbyte *)pinmesh + pinmesh->lump_elements))[j]);
 854                 for (j = 0;j < mesh->num_vertices;j++)
 855                 {
 856                         mesh->data_texcoord2f[j * 2 + 0] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 0]);
 857                         mesh->data_texcoord2f[j * 2 + 1] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 1]);
 858                 }
 859                 for (j = 0;j < mesh->num_vertices * mesh->num_frames;j++)
 860                 {
 861                         mesh->data_aliasvertex[j].origin[0] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 0]) * (1.0f / 64.0f);
 862                         mesh->data_aliasvertex[j].origin[1] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 1]) * (1.0f / 64.0f);
 863                         mesh->data_aliasvertex[j].origin[2] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 2]) * (1.0f / 64.0f);
 864                 }
 865                 vertexbuffer = Mem_Alloc(tempmempool, mesh->num_vertices * sizeof(float[3+3+3+3]));
 866                 svectorsbuffer = vertexbuffer + mesh->num_vertices * 3;
 867                 tvectorsbuffer = svectorsbuffer + mesh->num_vertices * 3;
 868                 normalsbuffer = tvectorsbuffer + mesh->num_vertices * 3;
 869                 for (j = 0;j < mesh->num_frames;j++)
 870                         Mod_BuildAliasVertexTextureVectors(mesh->num_vertices, mesh->data_aliasvertex + j * mesh->num_vertices, mesh->data_texcoord2f, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, mesh->num_triangles, mesh->data_element3i);
 871                 Mem_Free(vertexbuffer);
 872
 873                 memset(&tempskinframe, 0, sizeof(tempskinframe));
 874                 if (LittleLong(pinmesh->num_shaders) >= 1 && ((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name[0])
 875                         Mod_LoadSkinFrame (&tempskinframe, ((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE, true, false, true);
 876                 Mod_ValidateElements(mesh->data_element3i, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 877                 Mod_BuildTriangleNeighbors(mesh->data_neighbor3i, mesh->data_element3i, mesh->num_triangles);
 878                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins, &tempskinframe);
 879         }
 880         Mod_CalcAliasModelBBoxes();
 881 }
 882
 883 extern void R_Model_Zymotic_DrawSky(entity_render_t *ent);
 884 extern void R_Model_Zymotic_Draw(entity_render_t *ent);
 885 extern void R_Model_Zymotic_DrawFakeShadow(entity_render_t *ent);
 886 extern void R_Model_Zymotic_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 887 extern void R_Model_Zymotic_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
 888 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 889 {
 890         zymtype1header_t *pinmodel, *pheader;
 891         qbyte *pbase;
 892
 893         pinmodel = (void *)buffer;
 894         pbase = buffer;
 895         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 896                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 897         if (BigLong(pinmodel->type) != 1)
 898                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 899
 900         loadmodel->type = mod_alias;
 901         loadmodel->aliastype = ALIASTYPE_ZYM;
 902         loadmodel->DrawSky = NULL;
 903         loadmodel->Draw = R_Model_Zymotic_Draw;
 904         loadmodel->DrawFakeShadow = NULL;//R_Model_Zymotic_DrawFakeShadow;
 905         loadmodel->DrawShadowVolume = NULL;//R_Model_Zymotic_DrawShadowVolume;
 906         loadmodel->DrawLight = NULL;//R_Model_Zymotic_DrawLight;
 907
 908         // byteswap header
 909         pheader = pinmodel;
 910         pheader->type = BigLong(pinmodel->type);
 911         pheader->filesize = BigLong(pinmodel->filesize);
 912         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
 913         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
 914         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
 915         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
 916         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
 917         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
 918         pheader->radius = BigFloat(pinmodel->radius);
 919         pheader->numverts = loadmodel->zymnum_verts = BigLong(pinmodel->numverts);
 920         pheader->numtris = loadmodel->zymnum_tris = BigLong(pinmodel->numtris);
 921         pheader->numshaders = loadmodel->zymnum_shaders = BigLong(pinmodel->numshaders);
 922         pheader->numbones = loadmodel->zymnum_bones = BigLong(pinmodel->numbones);
 923         pheader->numscenes = loadmodel->zymnum_scenes = BigLong(pinmodel->numscenes);
 924         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
 925         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
 926         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
 927         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
 928         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
 929         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
 930         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
 931         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
 932         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
 933         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
 934         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
 935         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
 936         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
 937         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
 938         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
 939         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
 940         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
 941         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
 942
 943         loadmodel->flags = 0; // there are no flags
 944         loadmodel->numframes = pheader->numscenes;
 945         loadmodel->synctype = ST_SYNC;
 946         //loadmodel->numtris = pheader->numtris;
 947         //loadmodel->numverts = 0;
 948
 949         {
 950                 unsigned int i;
 951                 float modelradius, corner[2];
 952                 // model bbox
 953                 modelradius = pheader->radius;
 954                 for (i = 0;i < 3;i++)
 955                 {
 956                         loadmodel->normalmins[i] = pheader->mins[i];
 957                         loadmodel->normalmaxs[i] = pheader->maxs[i];
 958                         loadmodel->rotatedmins[i] = -modelradius;
 959                         loadmodel->rotatedmaxs[i] = modelradius;
 960                 }
 961                 corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 962                 corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 963                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 964                 if (loadmodel->yawmaxs[0] > modelradius)
 965                         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 966                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 967                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
 968                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 969                 loadmodel->radius = modelradius;
 970                 loadmodel->radius2 = modelradius * modelradius;
 971         }
 972
 973         {
 974                 // FIXME: add shaders, and make them switchable shader sets and...
 975                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 976                 loadmodel->skinscenes[0].firstframe = 0;
 977                 loadmodel->skinscenes[0].framecount = 1;
 978                 loadmodel->skinscenes[0].loop = true;
 979                 loadmodel->skinscenes[0].framerate = 10;
 980                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 981                 loadmodel->numskins = 1;
 982         }
 983
 984         // go through the lumps, swapping things
 985
 986         {
 987                 int i, numposes;
 988                 zymscene_t *scene;
 989         //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 990                 loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 991                 scene = (void *) (pheader->lump_scenes.start + pbase);
 992                 numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
 993                 for (i = 0;i < pheader->numscenes;i++)
 994                 {
 995                         memcpy(loadmodel->animscenes[i].name, scene->name, 32);
 996                         loadmodel->animscenes[i].firstframe = BigLong(scene->start);
 997                         loadmodel->animscenes[i].framecount = BigLong(scene->length);
 998                         loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
 999                         loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1000                         if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1001                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
1002                         if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1003                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1004                         if (loadmodel->animscenes[i].framerate < 0)
1005                                 Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
1006                         scene++;
1007                 }
1008         }
1009
1010         {
1011                 int i;
1012                 float *poses;
1013         //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1014                 loadmodel->zymdata_poses = Mem_Alloc(loadmodel->mempool, pheader->lump_poses.length);
1015                 poses = (void *) (pheader->lump_poses.start + pbase);
1016                 for (i = 0;i < pheader->lump_poses.length / 4;i++)
1017                         loadmodel->zymdata_poses[i] = BigFloat(poses[i]);
1018         }
1019
1020         {
1021                 int i;
1022                 zymbone_t *bone;
1023         //      zymlump_t lump_bones; // zymbone_t bone[numbones];
1024                 loadmodel->zymdata_bones = Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(zymbone_t));
1025                 bone = (void *) (pheader->lump_bones.start + pbase);
1026                 for (i = 0;i < pheader->numbones;i++)
1027                 {
1028                         memcpy(loadmodel->zymdata_bones[i].name, bone[i].name, sizeof(bone[i].name));
1029                         loadmodel->zymdata_bones[i].flags = BigLong(bone[i].flags);
1030                         loadmodel->zymdata_bones[i].parent = BigLong(bone[i].parent);
1031                         if (loadmodel->zymdata_bones[i].parent >= i)
1032                                 Host_Error("Mod_LoadZymoticModel: bone[%i].parent >= %i in %s\n", i, i, loadmodel->name);
1033                 }
1034         }
1035
1036         {
1037                 int i, *bonecount;
1038         //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1039                 loadmodel->zymdata_vertbonecounts = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1040                 bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
1041                 for (i = 0;i < pheader->numverts;i++)
1042                 {
1043                         loadmodel->zymdata_vertbonecounts[i] = BigLong(bonecount[i]);
1044                         if (loadmodel->zymdata_vertbonecounts[i] < 1)
1045                                 Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
1046                 }
1047         }
1048
1049         {
1050                 int i;
1051                 zymvertex_t *vertdata;
1052         //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1053                 loadmodel->zymdata_verts = Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1054                 vertdata = (void *) (pheader->lump_verts.start + pbase);
1055                 for (i = 0;i < pheader->lump_verts.length / (int) sizeof(zymvertex_t);i++)
1056                 {
1057                         loadmodel->zymdata_verts[i].bonenum = BigLong(vertdata[i].bonenum);
1058                         loadmodel->zymdata_verts[i].origin[0] = BigFloat(vertdata[i].origin[0]);
1059                         loadmodel->zymdata_verts[i].origin[1] = BigFloat(vertdata[i].origin[1]);
1060                         loadmodel->zymdata_verts[i].origin[2] = BigFloat(vertdata[i].origin[2]);
1061                 }
1062         }
1063
1064         {
1065                 int i;
1066                 float *intexcoord2f, *outtexcoord2f;
1067         //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1068                 loadmodel->zymdata_texcoords = outtexcoord2f = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(float[2]));
1069                 intexcoord2f = (void *) (pheader->lump_texcoords.start + pbase);
1070                 for (i = 0;i < pheader->numverts;i++)
1071                 {
1072                         outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1073                         // flip T coordinate for OpenGL
1074                         outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1075                 }
1076         }
1077
1078         {
1079                 int i, count, *renderlist, *renderlistend, *outrenderlist;
1080         //      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)
1081                 loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, pheader->lump_render.length);
1082                 // byteswap, validate, and swap winding order of tris
1083                 count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1084                 if (pheader->lump_render.length != count)
1085                         Host_Error("Mod_LoadZymoticModel: renderlist is wrong size in %s (is %i bytes, should be %i bytes)\n", loadmodel->name, pheader->lump_render.length, count);
1086                 outrenderlist = loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, count);
1087                 renderlist = (void *) (pheader->lump_render.start + pbase);
1088                 renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
1089                 for (i = 0;i < pheader->numshaders;i++)
1090                 {
1091                         if (renderlist >= renderlistend)
1092                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1093                         count = BigLong(*renderlist);renderlist++;
1094                         if (renderlist + count * 3 > renderlistend)
1095                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1096                         *outrenderlist++ = count;
1097                         while (count--)
1098                         {
1099                                 outrenderlist[2] = BigLong(renderlist[0]);
1100                                 outrenderlist[1] = BigLong(renderlist[1]);
1101                                 outrenderlist[0] = BigLong(renderlist[2]);
1102                                 if ((unsigned int)outrenderlist[0] >= (unsigned int)pheader->numverts
1103                                  || (unsigned int)outrenderlist[1] >= (unsigned int)pheader->numverts
1104                                  || (unsigned int)outrenderlist[2] >= (unsigned int)pheader->numverts)
1105                                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
1106                                 renderlist += 3;
1107                                 outrenderlist += 3;
1108                         }
1109                 }
1110         }
1111
1112         {
1113                 int i;
1114                 char *shadername;
1115         //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1116                 loadmodel->zymdata_textures = Mem_Alloc(loadmodel->mempool, pheader->numshaders * sizeof(rtexture_t *));
1117                 shadername = (void *) (pheader->lump_shaders.start + pbase);
1118                 for (i = 0;i < pheader->numshaders;i++)
1119                         loadmodel->zymdata_textures[i] = loadtextureimage(loadmodel->texturepool, shadername + i * 32, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0));
1120         }
1121
1122         {
1123         //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1124                 loadmodel->zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1125                 memcpy(loadmodel->zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1126         }
1127 }