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 float vertst[MAXALIASVERTS][2];
  33 static int vertusage[MAXALIASVERTS];
  34 static int vertonseam[MAXALIASVERTS];
  35 static int vertremap[MAXALIASVERTS];
  36 static int temptris[MAXALIASTRIS][3];
  37
  38 static void Mod_CalcAliasModelBBoxes (void)
  39 {
  40         int vnum, meshnum;
  41         float dist, yawradius, radius;
  42         aliasmesh_t *mesh;
  43         aliasvertex_t *v;
  44         VectorClear(loadmodel->normalmins);
  45         VectorClear(loadmodel->normalmaxs);
  46         yawradius = 0;
  47         radius = 0;
  48         for (meshnum = 0, mesh = loadmodel->aliasdata_meshes;meshnum < loadmodel->aliasnum_meshes;meshnum++, mesh++)
  49         {
  50                 for (vnum = 0, v = mesh->data_vertices;vnum < mesh->num_vertices * mesh->num_frames;vnum++, v++)
  51                 {
  52                         if (loadmodel->normalmins[0] > v->origin[0]) loadmodel->normalmins[0] = v->origin[0];
  53                         if (loadmodel->normalmins[1] > v->origin[1]) loadmodel->normalmins[1] = v->origin[1];
  54                         if (loadmodel->normalmins[2] > v->origin[2]) loadmodel->normalmins[2] = v->origin[2];
  55                         if (loadmodel->normalmaxs[0] < v->origin[0]) loadmodel->normalmaxs[0] = v->origin[0];
  56                         if (loadmodel->normalmaxs[1] < v->origin[1]) loadmodel->normalmaxs[1] = v->origin[1];
  57                         if (loadmodel->normalmaxs[2] < v->origin[2]) loadmodel->normalmaxs[2] = v->origin[2];
  58                         dist = v->origin[0] * v->origin[0] + v->origin[1] * v->origin[1];
  59                         if (yawradius < dist)
  60                                 yawradius = dist;
  61                         dist += v->origin[2] * v->origin[2];
  62                         if (radius < dist)
  63                                 radius = dist;
  64                 }
  65         }
  66         radius = sqrt(radius);
  67         yawradius = sqrt(yawradius);
  68         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
  69         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
  70         loadmodel->yawmins[2] = loadmodel->normalmins[2];
  71         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
  72         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
  73         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
  74         loadmodel->radius = radius;
  75         loadmodel->radius2 = radius * radius;
  76 }
  77
  78 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out)
  79 {
  80         int i, j;
  81         vec3_t temp;
  82         for (i = 0;i < inverts;i++)
  83         {
  84                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  85                         continue;
  86                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  87                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  88                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  89                 j = vertremap[i]; // not onseam
  90                 if (j >= 0)
  91                         VectorCopy(temp, out[j].origin);
  92                 j = vertremap[i+inverts]; // onseam
  93                 if (j >= 0)
  94                         VectorCopy(temp, out[j].origin);
  95         }
  96 }
  97
  98 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)
  99 {
 100         int i;
 101         for (i = 0;i < numverts;i++)
 102                 VectorCopy(vertices[i].origin, &vertexbuffer[i * 4]);
 103         Mod_BuildTextureVectorsAndNormals(numverts, numtriangles, vertexbuffer, texcoords, elements, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 104         for (i = 0;i < numverts;i++)
 105         {
 106                 // LordHavoc: alias models are backwards, apparently
 107                 vertices[i].normal[0] = normalsbuffer[i * 4 + 0];
 108                 vertices[i].normal[1] = normalsbuffer[i * 4 + 1];
 109                 vertices[i].normal[2] = normalsbuffer[i * 4 + 2];
 110                 vertices[i].svector[0] = svectorsbuffer[i * 4 + 0];
 111                 vertices[i].svector[1] = svectorsbuffer[i * 4 + 1];
 112                 vertices[i].svector[2] = svectorsbuffer[i * 4 + 2];
 113         }
 114 }
 115
 116 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)
 117 {
 118         int i, f, pose, groupframes;
 119         float interval, *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 120         daliasframetype_t *pframetype;
 121         daliasframe_t *pinframe;
 122         daliasgroup_t *group;
 123         daliasinterval_t *intervals;
 124         animscene_t *scene;
 125         pose = 0;
 126         scene = loadmodel->animscenes;
 127         vertexbuffer = Mem_Alloc(tempmempool, outverts * sizeof(float[4]) * 4);
 128         svectorsbuffer = vertexbuffer + outverts * 4;
 129         tvectorsbuffer = svectorsbuffer + outverts * 4;
 130         normalsbuffer = tvectorsbuffer + outverts * 4;
 131         for (f = 0;f < loadmodel->numframes;f++)
 132         {
 133                 pframetype = (daliasframetype_t *)datapointer;
 134                 datapointer += sizeof(daliasframetype_t);
 135                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 136                 {
 137                         // a single frame is still treated as a group
 138                         interval = 0.1f;
 139                         groupframes = 1;
 140                 }
 141                 else
 142                 {
 143                         // read group header
 144                         group = (daliasgroup_t *)datapointer;
 145                         datapointer += sizeof(daliasgroup_t);
 146                         groupframes = LittleLong (group->numframes);
 147
 148                         // intervals (time per frame)
 149                         intervals = (daliasinterval_t *)datapointer;
 150                         datapointer += sizeof(daliasinterval_t) * groupframes;
 151
 152                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 153                         if (interval < 0.01f)
 154                                 Host_Error("Mod_MDL_LoadFrames: invalid interval");
 155                 }
 156
 157                 // get scene name from first frame
 158                 pinframe = (daliasframe_t *)datapointer;
 159
 160                 strcpy(scene->name, pinframe->name);
 161                 scene->firstframe = pose;
 162                 scene->framecount = groupframes;
 163                 scene->framerate = 1.0f / interval;
 164                 scene->loop = true;
 165                 scene++;
 166
 167                 // read frames
 168                 for (i = 0;i < groupframes;i++)
 169                 {
 170                         pinframe = (daliasframe_t *)datapointer;
 171                         datapointer += sizeof(daliasframe_t);
 172                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, posedata + pose * outverts);
 173                         Mod_BuildAliasVertexTextureVectors(outverts, posedata + pose * outverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 174                         datapointer += sizeof(trivertx_t) * inverts;
 175                         pose++;
 176                 }
 177         }
 178         Mem_Free(vertexbuffer);
 179 }
 180
 181 void Mod_BuildAliasSkinFromSkinFrame(aliasskin_t *skin, skinframe_t *skinframe)
 182 {
 183         aliaslayer_t *layer;
 184         skin->flags = 0;
 185         // fog texture only exists if some pixels are transparent...
 186         if (skinframe->fog != NULL)
 187                 skin->flags |= ALIASSKIN_TRANSPARENT;
 188         // fog and gloss layers always exist
 189         skin->num_layers = 2;
 190         if (skinframe->glow != NULL)
 191                 skin->num_layers++;
 192         if (skinframe->merged != NULL)
 193                 skin->num_layers += 2;
 194         if (skinframe->base != NULL)
 195                 skin->num_layers += 2;
 196         if (skinframe->pants != NULL)
 197                 skin->num_layers += 2;
 198         if (skinframe->shirt != NULL)
 199                 skin->num_layers += 2;
 200         layer = skin->data_layers = Mem_Alloc(loadmodel->mempool, skin->num_layers * sizeof(aliaslayer_t));
 201         if (skinframe->glow != NULL)
 202         {
 203                 layer->flags = 0;
 204                 layer->texture = skinframe->glow;
 205                 layer++;
 206         }
 207         if (skinframe->merged != NULL)
 208         {
 209                 layer->flags = ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 210                 if (skinframe->glow != NULL)
 211                         layer->flags |= ALIASLAYER_ADD;
 212                 layer->texture = skinframe->merged;
 213                 layer->nmap = skinframe->nmap;
 214                 layer++;
 215         }
 216         if (skinframe->base != NULL)
 217         {
 218                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 219                 if (skinframe->glow != NULL)
 220                         layer->flags |= ALIASLAYER_ADD;
 221                 layer->texture = skinframe->base;
 222                 layer->nmap = skinframe->nmap;
 223                 layer++;
 224         }
 225         if (skinframe->pants != NULL)
 226         {
 227                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 228                 if (skinframe->glow != NULL || skinframe->base != NULL)
 229                         layer->flags |= ALIASLAYER_ADD;
 230                 layer->texture = skinframe->pants;
 231                 layer->nmap = skinframe->nmap;
 232                 layer++;
 233         }
 234         if (skinframe->shirt != NULL)
 235         {
 236                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 237                 if (skinframe->glow != NULL || skinframe->base != NULL || skinframe->pants != NULL)
 238                         layer->flags |= ALIASLAYER_ADD;
 239                 layer->texture = skinframe->shirt;
 240                 layer->nmap = skinframe->nmap;
 241                 layer++;
 242         }
 243         layer->flags = ALIASLAYER_FOG;
 244         layer->texture = skinframe->fog;
 245         layer++;
 246         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_SPECULAR;
 247         layer->texture = skinframe->gloss;
 248         layer->nmap = skinframe->nmap;
 249         layer++;
 250         if (skinframe->merged != NULL)
 251         {
 252                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 253                 layer->texture = skinframe->merged;
 254                 layer->nmap = skinframe->nmap;
 255                 layer++;
 256         }
 257         if (skinframe->base != NULL)
 258         {
 259                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 260                 layer->texture = skinframe->base;
 261                 layer->nmap = skinframe->nmap;
 262                 layer++;
 263         }
 264         if (skinframe->pants != NULL)
 265         {
 266                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_PANTS;
 267                 layer->texture = skinframe->pants;
 268                 layer->nmap = skinframe->nmap;
 269                 layer++;
 270         }
 271         if (skinframe->shirt != NULL)
 272         {
 273                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 274                 layer->texture = skinframe->shirt;
 275                 layer->nmap = skinframe->nmap;
 276                 layer++;
 277         }
 278 }
 279
 280 void Mod_BuildMDLMD2MeshInfo(int numverts, int numtris, int *elements, float *texcoords, aliasvertex_t *posedata)
 281 {
 282         int i;
 283         aliasmesh_t *mesh;
 284
 285         loadmodel->aliasnum_meshes = 1;
 286         mesh = loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 287         mesh->num_skins = 0;
 288         mesh->num_frames = 0;
 289         for (i = 0;i < loadmodel->numframes;i++)
 290                 mesh->num_frames += loadmodel->animscenes[i].framecount;
 291         for (i = 0;i < loadmodel->numskins;i++)
 292                 mesh->num_skins += loadmodel->skinscenes[i].framecount;
 293         mesh->num_triangles = numtris;
 294         mesh->num_vertices = numverts;
 295         mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 296         mesh->data_elements = elements;
 297         mesh->data_neighbors = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 298         Mod_ValidateElements(mesh->data_elements, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 299         Mod_BuildTriangleNeighbors(mesh->data_neighbors, mesh->data_elements, mesh->num_triangles);
 300         mesh->data_texcoords = texcoords;
 301         mesh->data_vertices = posedata;
 302         for (i = 0;i < mesh->num_skins;i++)
 303                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins + i, loadmodel->skinframes + i);
 304         Mod_CalcAliasModelBBoxes();
 305 }
 306
 307 #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);
 308 #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);
 309 extern void R_Model_Alias_Draw(entity_render_t *ent);
 310 extern void R_Model_Alias_DrawFakeShadow(entity_render_t *ent);
 311 extern void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 312 extern void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 313 void Mod_LoadQ1AliasModel (model_t *mod, void *buffer)
 314 {
 315         int i, j, version, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins, *elements, numverts, numtris;
 316         float scales, scalet, scale[3], translate[3], interval, *texcoords;
 317         mdl_t *pinmodel;
 318         stvert_t *pinstverts;
 319         dtriangle_t *pintriangles;
 320         daliasskintype_t *pinskintype;
 321         daliasskingroup_t *pinskingroup;
 322         daliasskininterval_t *pinskinintervals;
 323         daliasframetype_t *pinframetype;
 324         daliasgroup_t *pinframegroup;
 325         aliasvertex_t *posedata;
 326         qbyte *datapointer, *startframes, *startskins;
 327         char name[MAX_QPATH];
 328         skinframe_t tempskinframe;
 329         animscene_t *tempskinscenes;
 330         skinframe_t *tempskinframes;
 331
 332         datapointer = buffer;
 333         pinmodel = (mdl_t *)datapointer;
 334         datapointer += sizeof(mdl_t);
 335
 336         version = LittleLong (pinmodel->version);
 337         if (version != ALIAS_VERSION)
 338                 Host_Error ("%s has wrong version number (%i should be %i)",
 339                                  loadmodel->name, version, ALIAS_VERSION);
 340
 341         loadmodel->type = mod_alias;
 342         loadmodel->aliastype = ALIASTYPE_ALIAS;
 343         loadmodel->DrawSky = NULL;
 344         loadmodel->Draw = R_Model_Alias_Draw;
 345         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 346         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 347         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 348
 349         loadmodel->numskins = LittleLong(pinmodel->numskins);
 350         BOUNDI(loadmodel->numskins,0,256);
 351         skinwidth = LittleLong (pinmodel->skinwidth);
 352         BOUNDI(skinwidth,0,4096);
 353         skinheight = LittleLong (pinmodel->skinheight);
 354         BOUNDI(skinheight,0,4096);
 355         numverts = LittleLong(pinmodel->numverts);
 356         BOUNDI(numverts,0,MAXALIASVERTS);
 357         numtris = LittleLong(pinmodel->numtris);
 358         BOUNDI(numtris,0,MAXALIASTRIS);
 359         loadmodel->numframes = LittleLong(pinmodel->numframes);
 360         BOUNDI(loadmodel->numframes,0,65536);
 361         loadmodel->synctype = LittleLong (pinmodel->synctype);
 362         BOUNDI(loadmodel->synctype,0,2);
 363         loadmodel->flags = LittleLong (pinmodel->flags);
 364
 365         for (i = 0;i < 3;i++)
 366         {
 367                 scale[i] = LittleFloat (pinmodel->scale[i]);
 368                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 369         }
 370
 371         startskins = datapointer;
 372         totalskins = 0;
 373         for (i = 0;i < loadmodel->numskins;i++)
 374         {
 375                 pinskintype = (daliasskintype_t *)datapointer;
 376                 datapointer += sizeof(daliasskintype_t);
 377                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 378                         groupskins = 1;
 379                 else
 380                 {
 381                         pinskingroup = (daliasskingroup_t *)datapointer;
 382                         datapointer += sizeof(daliasskingroup_t);
 383                         groupskins = LittleLong(pinskingroup->numskins);
 384                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 385                 }
 386
 387                 for (j = 0;j < groupskins;j++)
 388                 {
 389                         datapointer += skinwidth * skinheight;
 390                         totalskins++;
 391                 }
 392         }
 393
 394         pinstverts = (stvert_t *)datapointer;
 395         datapointer += sizeof(stvert_t) * numverts;
 396
 397         pintriangles = (dtriangle_t *)datapointer;
 398         datapointer += sizeof(dtriangle_t) * numtris;
 399
 400         startframes = datapointer;
 401         totalposes = 0;
 402         for (i = 0;i < loadmodel->numframes;i++)
 403         {
 404                 pinframetype = (daliasframetype_t *)datapointer;
 405                 datapointer += sizeof(daliasframetype_t);
 406                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 407                         groupframes = 1;
 408                 else
 409                 {
 410                         pinframegroup = (daliasgroup_t *)datapointer;
 411                         datapointer += sizeof(daliasgroup_t);
 412                         groupframes = LittleLong(pinframegroup->numframes);
 413                         datapointer += sizeof(daliasinterval_t) * groupframes;
 414                 }
 415
 416                 for (j = 0;j < groupframes;j++)
 417                 {
 418                         datapointer += sizeof(daliasframe_t);
 419                         datapointer += sizeof(trivertx_t) * numverts;
 420                         totalposes++;
 421                 }
 422         }
 423
 424         // load the skins
 425         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 426         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 427         totalskins = 0;
 428         datapointer = startskins;
 429         for (i = 0;i < loadmodel->numskins;i++)
 430         {
 431                 pinskintype = (daliasskintype_t *)datapointer;
 432                 datapointer += sizeof(daliasskintype_t);
 433
 434                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 435                 {
 436                         groupskins = 1;
 437                         interval = 0.1f;
 438                 }
 439                 else
 440                 {
 441                         pinskingroup = (daliasskingroup_t *)datapointer;
 442                         datapointer += sizeof(daliasskingroup_t);
 443
 444                         groupskins = LittleLong (pinskingroup->numskins);
 445
 446                         pinskinintervals = (daliasskininterval_t *)datapointer;
 447                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 448
 449                         interval = LittleFloat(pinskinintervals[0].interval);
 450                         if (interval < 0.01f)
 451                                 Host_Error("Mod_LoadQ1AliasModel: invalid interval\n");
 452                 }
 453
 454                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 455                 loadmodel->skinscenes[i].firstframe = totalskins;
 456                 loadmodel->skinscenes[i].framecount = groupskins;
 457                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 458                 loadmodel->skinscenes[i].loop = true;
 459
 460                 for (j = 0;j < groupskins;j++)
 461                 {
 462                         if (groupskins > 1)
 463                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 464                         else
 465                                 sprintf (name, "%s_%i", loadmodel->name, i);
 466                         if (!Mod_LoadSkinFrame(loadmodel->skinframes + totalskins, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true))
 467                                 Mod_LoadSkinFrame_Internal(loadmodel->skinframes + totalskins, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true, (qbyte *)datapointer, skinwidth, skinheight);
 468                         datapointer += skinwidth * skinheight;
 469                         totalskins++;
 470                 }
 471         }
 472         // check for skins that don't exist in the model, but do exist as external images
 473         // (this was added because yummyluv kept pestering me about support for it)
 474         for (;;)
 475         {
 476                 sprintf (name, "%s_%i", loadmodel->name, loadmodel->numskins);
 477                 if (Mod_LoadSkinFrame (&tempskinframe, name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA, true, false, true))
 478                 {
 479                         // expand the arrays to make room
 480                         tempskinscenes = loadmodel->skinscenes;
 481                         tempskinframes = loadmodel->skinframes;
 482                         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 483                         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, (totalskins + 1) * sizeof(skinframe_t));
 484                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 485                         memcpy(loadmodel->skinframes, tempskinframes, totalskins * sizeof(skinframe_t));
 486                         Mem_Free(tempskinscenes);
 487                         Mem_Free(tempskinframes);
 488                         // store the info about the new skin
 489                         strcpy(loadmodel->skinscenes[loadmodel->numskins].name, name);
 490                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 491                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 492                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 493                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 494                         loadmodel->skinframes[totalskins] = tempskinframe;
 495                         loadmodel->numskins++;
 496                         totalskins++;
 497                 }
 498                 else
 499                         break;
 500         }
 501
 502         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 503         scales = 1.0 / skinwidth;
 504         scalet = 1.0 / skinheight;
 505         for (i = 0;i < numverts;i++)
 506         {
 507                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 508                 vertst[i][0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 509                 vertst[i][1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 510                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 511                 vertst[i+numverts][1] = vertst[i][1];
 512                 vertusage[i] = 0;
 513                 vertusage[i+numverts] = 0;
 514         }
 515
 516 // load triangle data
 517         elements = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * numtris);
 518
 519         // count the vertices used
 520         for (i = 0;i < numverts*2;i++)
 521                 vertusage[i] = 0;
 522         for (i = 0;i < numtris;i++)
 523         {
 524                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 525                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 526                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 527                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 528                 {
 529                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 530                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 531                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 532                 }
 533                 vertusage[temptris[i][0]]++;
 534                 vertusage[temptris[i][1]]++;
 535                 vertusage[temptris[i][2]]++;
 536         }
 537         // build remapping table and compact array
 538         totalverts = 0;
 539         for (i = 0;i < numverts*2;i++)
 540         {
 541                 if (vertusage[i])
 542                 {
 543                         vertremap[i] = totalverts;
 544                         vertst[totalverts][0] = vertst[i][0];
 545                         vertst[totalverts][1] = vertst[i][1];
 546                         totalverts++;
 547                 }
 548                 else
 549                         vertremap[i] = -1; // not used at all
 550         }
 551         // remap the triangle references
 552         for (i = 0;i < numtris;i++)
 553         {
 554                 elements[i*3+0] = vertremap[temptris[i][0]];
 555                 elements[i*3+1] = vertremap[temptris[i][1]];
 556                 elements[i*3+2] = vertremap[temptris[i][2]];
 557         }
 558         // store the texture coordinates
 559         texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[4]) * totalverts);
 560         for (i = 0;i < totalverts;i++)
 561         {
 562                 texcoords[i*4+0] = vertst[i][0];
 563                 texcoords[i*4+1] = vertst[i][1];
 564         }
 565
 566 // load the frames
 567         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 568         posedata = Mem_Alloc(loadmodel->mempool, sizeof(aliasvertex_t) * totalposes * totalverts);
 569         Mod_MDL_LoadFrames (startframes, numverts, totalverts, scale, translate, texcoords, posedata, numtris, elements);
 570         Mod_BuildMDLMD2MeshInfo(totalverts, numtris, elements, texcoords, posedata);
 571 }
 572
 573 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int numverts, int *vertremap)
 574 {
 575         int i;
 576         trivertx_t *in;
 577         for (i = 0;i < numverts;i++)
 578         {
 579                 in = v + vertremap[i];
 580                 out[i].origin[0] = in->v[0] * scale[0] + translate[0];
 581                 out[i].origin[1] = in->v[1] * scale[1] + translate[1];
 582                 out[i].origin[2] = in->v[2] * scale[2] + translate[2];
 583         }
 584 }
 585
 586 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 587 {
 588         int i, j, k, hashindex, num, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end, *elements, numverts, numtris;
 589         float *stverts, s, t, scale[3], translate[3], *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer, *texcoords;
 590         aliasvertex_t *posedata;
 591         md2_t *pinmodel;
 592         qbyte *base, *datapointer;
 593         md2frame_t *pinframe;
 594         char *inskin;
 595         md2triangle_t *intri;
 596         unsigned short *inst;
 597         struct md2verthash_s
 598         {
 599                 struct md2verthash_s *next;
 600                 int xyz;
 601                 float st[2];
 602         }
 603         *hash, **md2verthash, *md2verthashdata;
 604
 605         pinmodel = buffer;
 606         base = buffer;
 607
 608         version = LittleLong (pinmodel->version);
 609         if (version != MD2ALIAS_VERSION)
 610                 Host_Error ("%s has wrong version number (%i should be %i)",
 611                         loadmodel->name, version, MD2ALIAS_VERSION);
 612
 613         loadmodel->type = mod_alias;
 614         loadmodel->aliastype = ALIASTYPE_ALIAS;
 615         loadmodel->DrawSky = NULL;
 616         loadmodel->Draw = R_Model_Alias_Draw;
 617         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 618         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 619         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 620
 621         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 622                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 623         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 624                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 625         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 626                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 627         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 628                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 629
 630         end = LittleLong(pinmodel->ofs_end);
 631         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 632                 Host_Error ("%s is not a valid model", loadmodel->name);
 633         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 634                 Host_Error ("%s is not a valid model", loadmodel->name);
 635         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 636                 Host_Error ("%s is not a valid model", loadmodel->name);
 637         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 638                 Host_Error ("%s is not a valid model", loadmodel->name);
 639         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 640                 Host_Error ("%s is not a valid model", loadmodel->name);
 641
 642         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 643         numxyz = LittleLong(pinmodel->num_xyz);
 644         numst = LittleLong(pinmodel->num_st);
 645         numtris = LittleLong(pinmodel->num_tris);
 646         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 647
 648         loadmodel->flags = 0; // there are no MD2 flags
 649         loadmodel->synctype = ST_RAND;
 650
 651         // load the skins
 652         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 653         if (loadmodel->numskins)
 654         {
 655                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins + sizeof(skinframe_t) * loadmodel->numskins);
 656                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + loadmodel->numskins);
 657                 for (i = 0;i < loadmodel->numskins;i++)
 658                 {
 659                         loadmodel->skinscenes[i].firstframe = i;
 660                         loadmodel->skinscenes[i].framecount = 1;
 661                         loadmodel->skinscenes[i].loop = true;
 662                         loadmodel->skinscenes[i].framerate = 10;
 663                         Mod_LoadSkinFrame (loadmodel->skinframes + i, inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE, true, false, true);
 664                         inskin += MD2MAX_SKINNAME;
 665                 }
 666         }
 667
 668         // load the triangles and stvert data
 669         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 670         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 671         skinwidth = LittleLong(pinmodel->skinwidth);
 672         skinheight = LittleLong(pinmodel->skinheight);
 673
 674         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 675         s = 1.0f / skinwidth;
 676         t = 1.0f / skinheight;
 677         for (i = 0;i < numst;i++)
 678         {
 679                 j = (unsigned short) LittleShort(inst[i*2+0]);
 680                 k = (unsigned short) LittleShort(inst[i*2+1]);
 681                 if (j >= skinwidth || k >= skinheight)
 682                 {
 683                         Mem_Free(stverts);
 684                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 685                 }
 686                 stverts[i*2+0] = j * s;
 687                 stverts[i*2+1] = k * t;
 688         }
 689
 690         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 691         md2verthashdata = Mem_Alloc(tempmempool, numtris * 3 * sizeof(*hash));
 692         // swap the triangle list
 693         num = 0;
 694         elements = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 695         for (i = 0;i < numtris;i++)
 696         {
 697                 for (j = 0;j < 3;j++)
 698                 {
 699                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 700                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 701                         if (xyz >= numxyz || st >= numst)
 702                         {
 703                                 Mem_Free(md2verthash);
 704                                 Mem_Free(md2verthashdata);
 705                                 Mem_Free(stverts);
 706                                 if (xyz >= numxyz)
 707                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 708                                 if (st >= numst)
 709                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 710                         }
 711                         s = stverts[st*2+0];
 712                         t = stverts[st*2+1];
 713                         hashindex = (xyz * 17 + st) & 255;
 714                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 715                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 716                                         break;
 717                         if (hash == NULL)
 718                         {
 719                                 hash = md2verthashdata + num++;
 720                                 hash->xyz = xyz;
 721                                 hash->st[0] = s;
 722                                 hash->st[1] = t;
 723                                 hash->next = md2verthash[hashindex];
 724                                 md2verthash[hashindex] = hash;
 725                         }
 726                         elements[i*3+j] = (hash - md2verthashdata);
 727                 }
 728         }
 729
 730         Mem_Free(stverts);
 731
 732         numverts = num;
 733         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 734         texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[4]));
 735         for (i = 0;i < num;i++)
 736         {
 737                 hash = md2verthashdata + i;
 738                 vertremap[i] = hash->xyz;
 739                 texcoords[i*4+0] = hash->st[0];
 740                 texcoords[i*4+1] = hash->st[1];
 741         }
 742
 743         Mem_Free(md2verthash);
 744         Mem_Free(md2verthashdata);
 745
 746         // load the frames
 747         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 748         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 749         posedata = Mem_Alloc(loadmodel->mempool, numverts * loadmodel->numframes * sizeof(trivertx_t));
 750
 751         vertexbuffer = Mem_Alloc(tempmempool, numverts * sizeof(float[4]) * 4);
 752         svectorsbuffer = vertexbuffer + numverts * 4;
 753         tvectorsbuffer = svectorsbuffer + numverts * 4;
 754         normalsbuffer = tvectorsbuffer + numverts * 4;
 755         for (i = 0;i < loadmodel->numframes;i++)
 756         {
 757                 pinframe = (md2frame_t *)datapointer;
 758                 datapointer += sizeof(md2frame_t);
 759                 for (j = 0;j < 3;j++)
 760                 {
 761                         scale[j] = LittleFloat(pinframe->scale[j]);
 762                         translate[j] = LittleFloat(pinframe->translate[j]);
 763                 }
 764                 Mod_MD2_ConvertVerts(scale, translate, (void *)datapointer, posedata + i * numverts, numverts, vertremap);
 765                 Mod_BuildAliasVertexTextureVectors(numverts, posedata + i * numverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 766                 datapointer += numxyz * sizeof(trivertx_t);
 767
 768                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 769                 loadmodel->animscenes[i].firstframe = i;
 770                 loadmodel->animscenes[i].framecount = 1;
 771                 loadmodel->animscenes[i].framerate = 10;
 772                 loadmodel->animscenes[i].loop = true;
 773         }
 774         Mem_Free(vertexbuffer);
 775
 776         Mem_Free(vertremap);
 777
 778         Mod_BuildMDLMD2MeshInfo(numverts, numtris, elements, texcoords, posedata);
 779 }
 780
 781 void Mod_LoadQ3AliasModel(model_t *mod, void *buffer)
 782 {
 783         int i, j, version;
 784         float *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 785         md3modelheader_t *pinmodel;
 786         md3frameinfo_t *pinframe;
 787         md3mesh_t *pinmesh;
 788         aliasmesh_t *mesh;
 789         skinframe_t tempskinframe;
 790
 791         pinmodel = buffer;
 792
 793         if (memcmp(pinmodel->identifier, "IDP3", 4))
 794                 Host_Error ("%s is not a MD3 (IDP3) file\n", loadmodel->name);
 795         version = LittleLong (pinmodel->version);
 796         if (version != MD3VERSION)
 797                 Host_Error ("%s has wrong version number (%i should be %i)",
 798                         loadmodel->name, version, MD3VERSION);
 799
 800         loadmodel->type = mod_alias;
 801         loadmodel->aliastype = ALIASTYPE_ALIAS;
 802         loadmodel->DrawSky = NULL;
 803         loadmodel->Draw = R_Model_Alias_Draw;
 804         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 805         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 806         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 807         loadmodel->flags = 0;
 808         loadmodel->synctype = ST_RAND;
 809
 810         // set up some global info about the model
 811         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 812         loadmodel->numskins = 1;
 813         loadmodel->aliasnum_meshes = LittleLong(pinmodel->num_meshes);
 814         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 815         loadmodel->skinscenes[0].firstframe = 0;
 816         loadmodel->skinscenes[0].framecount = 1;
 817         loadmodel->skinscenes[0].loop = true;
 818         loadmodel->skinscenes[0].framerate = 10;
 819
 820         // load frameinfo
 821         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 822         for (i = 0, pinframe = (md3frameinfo_t *)((qbyte *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
 823         {
 824                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 825                 loadmodel->animscenes[i].firstframe = i;
 826                 loadmodel->animscenes[i].framecount = 1;
 827                 loadmodel->animscenes[i].framerate = 10;
 828                 loadmodel->animscenes[i].loop = true;
 829         }
 830
 831         // tags are not loaded yet
 832
 833         // load meshes
 834         loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 835         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)))
 836         {
 837                 if (memcmp(pinmesh->identifier, "IDP3", 4))
 838                         Host_Error("Mod_LoadQ3AliasModel: invalid mesh identifier (not IDP3)\n");
 839                 mesh = loadmodel->aliasdata_meshes + i;
 840                 mesh->num_skins = loadmodel->numskins;
 841                 mesh->num_frames = LittleLong(pinmesh->num_frames);
 842                 mesh->num_vertices = LittleLong(pinmesh->num_vertices);
 843                 mesh->num_triangles = LittleLong(pinmesh->num_triangles);
 844                 mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 845                 mesh->data_elements = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 846                 mesh->data_neighbors = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 847                 mesh->data_texcoords = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * sizeof(float[4]));
 848                 mesh->data_vertices = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * mesh->num_frames * sizeof(aliasvertex_t));
 849                 for (j = 0;j < mesh->num_triangles * 3;j++)
 850                         mesh->data_elements[j] = LittleLong(((int *)((qbyte *)pinmesh + pinmesh->lump_elements))[j]);
 851                 for (j = 0;j < mesh->num_vertices;j++)
 852                 {
 853                         mesh->data_texcoords[j * 4 + 0] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 0]);
 854                         mesh->data_texcoords[j * 4 + 1] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 1]);
 855                 }
 856                 for (j = 0;j < mesh->num_vertices * mesh->num_frames;j++)
 857                 {
 858                         mesh->data_vertices[j].origin[0] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 0]) * (1.0f / 64.0f);
 859                         mesh->data_vertices[j].origin[1] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 1]) * (1.0f / 64.0f);
 860                         mesh->data_vertices[j].origin[2] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 2]) * (1.0f / 64.0f);
 861                 }
 862                 vertexbuffer = Mem_Alloc(tempmempool, mesh->num_vertices * sizeof(float[4]) * 4);
 863                 svectorsbuffer = vertexbuffer + mesh->num_vertices * 4;
 864                 tvectorsbuffer = svectorsbuffer + mesh->num_vertices * 4;
 865                 normalsbuffer = tvectorsbuffer + mesh->num_vertices * 4;
 866                 for (j = 0;j < mesh->num_frames;j++)
 867                         Mod_BuildAliasVertexTextureVectors(mesh->num_vertices, mesh->data_vertices + j * mesh->num_vertices, mesh->data_texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, mesh->num_triangles, mesh->data_elements);
 868                 Mem_Free(vertexbuffer);
 869
 870                 memset(&tempskinframe, 0, sizeof(tempskinframe));
 871                 if (LittleLong(pinmesh->num_shaders) >= 1 && ((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name[0])
 872                         Mod_LoadSkinFrame (&tempskinframe, ((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE, true, false, true);
 873                 Mod_ValidateElements(mesh->data_elements, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 874                 Mod_BuildTriangleNeighbors(mesh->data_neighbors, mesh->data_elements, mesh->num_triangles);
 875                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins, &tempskinframe);
 876         }
 877         Mod_CalcAliasModelBBoxes();
 878 }
 879
 880 extern void R_Model_Zymotic_DrawSky(entity_render_t *ent);
 881 extern void R_Model_Zymotic_Draw(entity_render_t *ent);
 882 extern void R_Model_Zymotic_DrawFakeShadow(entity_render_t *ent);
 883 extern void R_Model_Zymotic_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 884 extern void R_Model_Zymotic_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 885 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 886 {
 887         zymtype1header_t *pinmodel, *pheader;
 888         qbyte *pbase;
 889
 890         pinmodel = (void *)buffer;
 891         pbase = buffer;
 892         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 893                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 894         if (BigLong(pinmodel->type) != 1)
 895                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 896
 897         loadmodel->type = mod_alias;
 898         loadmodel->aliastype = ALIASTYPE_ZYM;
 899         loadmodel->DrawSky = NULL;
 900         loadmodel->Draw = R_Model_Zymotic_Draw;
 901         loadmodel->DrawFakeShadow = NULL;//R_Model_Zymotic_DrawFakeShadow;
 902         loadmodel->DrawShadowVolume = NULL;//R_Model_Zymotic_DrawShadowVolume;
 903         loadmodel->DrawLight = NULL;//R_Model_Zymotic_DrawLight;
 904
 905         // byteswap header
 906         pheader = pinmodel;
 907         pheader->type = BigLong(pinmodel->type);
 908         pheader->filesize = BigLong(pinmodel->filesize);
 909         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
 910         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
 911         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
 912         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
 913         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
 914         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
 915         pheader->radius = BigFloat(pinmodel->radius);
 916         pheader->numverts = loadmodel->zymnum_verts = BigLong(pinmodel->numverts);
 917         pheader->numtris = loadmodel->zymnum_tris = BigLong(pinmodel->numtris);
 918         pheader->numshaders = loadmodel->zymnum_shaders = BigLong(pinmodel->numshaders);
 919         pheader->numbones = loadmodel->zymnum_bones = BigLong(pinmodel->numbones);
 920         pheader->numscenes = loadmodel->zymnum_scenes = BigLong(pinmodel->numscenes);
 921         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
 922         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
 923         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
 924         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
 925         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
 926         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
 927         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
 928         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
 929         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
 930         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
 931         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
 932         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
 933         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
 934         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
 935         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
 936         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
 937         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
 938         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
 939
 940         loadmodel->flags = 0; // there are no flags
 941         loadmodel->numframes = pheader->numscenes;
 942         loadmodel->synctype = ST_SYNC;
 943         //loadmodel->numtris = pheader->numtris;
 944         //loadmodel->numverts = 0;
 945
 946         {
 947                 unsigned int i;
 948                 float modelradius, corner[2];
 949                 // model bbox
 950                 modelradius = pheader->radius;
 951                 for (i = 0;i < 3;i++)
 952                 {
 953                         loadmodel->normalmins[i] = pheader->mins[i];
 954                         loadmodel->normalmaxs[i] = pheader->maxs[i];
 955                         loadmodel->rotatedmins[i] = -modelradius;
 956                         loadmodel->rotatedmaxs[i] = modelradius;
 957                 }
 958                 corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 959                 corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 960                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 961                 if (loadmodel->yawmaxs[0] > modelradius)
 962                         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 963                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 964                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
 965                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 966                 loadmodel->radius = modelradius;
 967                 loadmodel->radius2 = modelradius * modelradius;
 968         }
 969
 970         {
 971                 // FIXME: add shaders, and make them switchable shader sets and...
 972                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 973                 loadmodel->skinscenes[0].firstframe = 0;
 974                 loadmodel->skinscenes[0].framecount = 1;
 975                 loadmodel->skinscenes[0].loop = true;
 976                 loadmodel->skinscenes[0].framerate = 10;
 977                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 978                 loadmodel->numskins = 1;
 979         }
 980
 981         // go through the lumps, swapping things
 982
 983         {
 984                 int i, numposes;
 985                 zymscene_t *scene;
 986         //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 987                 loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 988                 scene = (void *) (pheader->lump_scenes.start + pbase);
 989                 numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
 990                 for (i = 0;i < pheader->numscenes;i++)
 991                 {
 992                         memcpy(loadmodel->animscenes[i].name, scene->name, 32);
 993                         loadmodel->animscenes[i].firstframe = BigLong(scene->start);
 994                         loadmodel->animscenes[i].framecount = BigLong(scene->length);
 995                         loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
 996                         loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
 997                         if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
 998                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
 999                         if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1000                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1001                         if (loadmodel->animscenes[i].framerate < 0)
1002                                 Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
1003                         scene++;
1004                 }
1005         }
1006
1007         {
1008                 int i;
1009                 float *poses;
1010         //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1011                 loadmodel->zymdata_poses = Mem_Alloc(loadmodel->mempool, pheader->lump_poses.length);
1012                 poses = (void *) (pheader->lump_poses.start + pbase);
1013                 for (i = 0;i < pheader->lump_poses.length / 4;i++)
1014                         loadmodel->zymdata_poses[i] = BigFloat(poses[i]);
1015         }
1016
1017         {
1018                 int i;
1019                 zymbone_t *bone;
1020         //      zymlump_t lump_bones; // zymbone_t bone[numbones];
1021                 loadmodel->zymdata_bones = Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(zymbone_t));
1022                 bone = (void *) (pheader->lump_bones.start + pbase);
1023                 for (i = 0;i < pheader->numbones;i++)
1024                 {
1025                         memcpy(loadmodel->zymdata_bones[i].name, bone[i].name, sizeof(bone[i].name));
1026                         loadmodel->zymdata_bones[i].flags = BigLong(bone[i].flags);
1027                         loadmodel->zymdata_bones[i].parent = BigLong(bone[i].parent);
1028                         if (loadmodel->zymdata_bones[i].parent >= i)
1029                                 Host_Error("Mod_LoadZymoticModel: bone[%i].parent >= %i in %s\n", i, i, loadmodel->name);
1030                 }
1031         }
1032
1033         {
1034                 int i, *bonecount;
1035         //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1036                 loadmodel->zymdata_vertbonecounts = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1037                 bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
1038                 for (i = 0;i < pheader->numverts;i++)
1039                 {
1040                         loadmodel->zymdata_vertbonecounts[i] = BigLong(bonecount[i]);
1041                         if (loadmodel->zymdata_vertbonecounts[i] < 1)
1042                                 Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
1043                 }
1044         }
1045
1046         {
1047                 int i;
1048                 zymvertex_t *vertdata;
1049         //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1050                 loadmodel->zymdata_verts = Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1051                 vertdata = (void *) (pheader->lump_verts.start + pbase);
1052                 for (i = 0;i < pheader->lump_verts.length / (int) sizeof(zymvertex_t);i++)
1053                 {
1054                         loadmodel->zymdata_verts[i].bonenum = BigLong(vertdata[i].bonenum);
1055                         loadmodel->zymdata_verts[i].origin[0] = BigFloat(vertdata[i].origin[0]);
1056                         loadmodel->zymdata_verts[i].origin[1] = BigFloat(vertdata[i].origin[1]);
1057                         loadmodel->zymdata_verts[i].origin[2] = BigFloat(vertdata[i].origin[2]);
1058                 }
1059         }
1060
1061         {
1062                 int i;
1063                 float *intexcoord, *outtexcoord;
1064         //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1065                 loadmodel->zymdata_texcoords = outtexcoord = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(float[4]));
1066                 intexcoord = (void *) (pheader->lump_texcoords.start + pbase);
1067                 for (i = 0;i < pheader->numverts;i++)
1068                 {
1069                         outtexcoord[i*4+0] = BigFloat(intexcoord[i*2+0]);
1070                         // flip T coordinate for OpenGL
1071                         outtexcoord[i*4+1] = 1 - BigFloat(intexcoord[i*2+1]);
1072                 }
1073         }
1074
1075         {
1076                 int i, count, *renderlist, *renderlistend, *outrenderlist;
1077         //      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)
1078                 loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, pheader->lump_render.length);
1079                 // byteswap, validate, and swap winding order of tris
1080                 count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1081                 if (pheader->lump_render.length != count)
1082                         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);
1083                 outrenderlist = loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, count);
1084                 renderlist = (void *) (pheader->lump_render.start + pbase);
1085                 renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
1086                 for (i = 0;i < pheader->numshaders;i++)
1087                 {
1088                         if (renderlist >= renderlistend)
1089                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1090                         count = BigLong(*renderlist);renderlist++;
1091                         if (renderlist + count * 3 > renderlistend)
1092                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1093                         *outrenderlist++ = count;
1094                         while (count--)
1095                         {
1096                                 outrenderlist[2] = BigLong(renderlist[0]);
1097                                 outrenderlist[1] = BigLong(renderlist[1]);
1098                                 outrenderlist[0] = BigLong(renderlist[2]);
1099                                 if ((unsigned int)outrenderlist[0] >= (unsigned int)pheader->numverts
1100                                  || (unsigned int)outrenderlist[1] >= (unsigned int)pheader->numverts
1101                                  || (unsigned int)outrenderlist[2] >= (unsigned int)pheader->numverts)
1102                                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
1103                                 renderlist += 3;
1104                                 outrenderlist += 3;
1105                         }
1106                 }
1107         }
1108
1109         {
1110                 int i;
1111                 char *shadername;
1112         //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1113                 loadmodel->zymdata_textures = Mem_Alloc(loadmodel->mempool, pheader->numshaders * sizeof(rtexture_t *));
1114                 shadername = (void *) (pheader->lump_shaders.start + pbase);
1115                 for (i = 0;i < pheader->numshaders;i++)
1116                         loadmodel->zymdata_textures[i] = loadtextureimage(loadmodel->texturepool, shadername + i * 32, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0));
1117         }
1118
1119         {
1120         //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1121                 loadmodel->zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1122                 memcpy(loadmodel->zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1123         }
1124 }