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
  24 static cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0"};
  25
  26 void Mod_AliasInit (void)
  27 {
  28         Cvar_RegisterVariable(&r_mipskins);
  29 }
  30
  31 // LordHavoc: proper bounding box considerations
  32 static float aliasbboxmin[3], aliasbboxmax[3], modelyawradius, modelradius;
  33
  34 static float vertst[MAXALIASVERTS][2];
  35 static int vertusage[MAXALIASVERTS];
  36 static int vertonseam[MAXALIASVERTS];
  37 static int vertremap[MAXALIASVERTS];
  38 static int temptris[MAXALIASTRIS][3];
  39
  40 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out)
  41 {
  42         int i, j;
  43         float dist;
  44         vec3_t temp;
  45         for (i = 0;i < inverts;i++)
  46         {
  47                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  48                         continue;
  49
  50                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  51                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  52                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  53                 // update bounding box
  54                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
  55                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
  56                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
  57                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
  58                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
  59                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
  60                 dist = temp[0]*temp[0]+temp[1]*temp[1];
  61                 if (modelyawradius < dist)
  62                         modelyawradius = dist;
  63                 dist += temp[2]*temp[2];
  64                 if (modelradius < dist)
  65                         modelradius = dist;
  66
  67                 j = vertremap[i]; // not onseam
  68                 if (j >= 0)
  69                         VectorCopy(temp, out[j].origin);
  70                 j = vertremap[i+inverts]; // onseam
  71                 if (j >= 0)
  72                         VectorCopy(temp, out[j].origin);
  73         }
  74 }
  75
  76 static void Mod_BuildAliasVertexTextureVectors(int numtriangles, const int *elements, int numverts, aliasvertex_t *vertices, const float *texcoords, float *vertexbuffer, float *svectorsbuffer, float *tvectorsbuffer, float *normalsbuffer)
  77 {
  78         int i;
  79         for (i = 0;i < numverts;i++)
  80                 VectorCopy(vertices[i].origin, &vertexbuffer[i * 4]);
  81         Mod_BuildTextureVectorsAndNormals(numverts, numtriangles, vertexbuffer, texcoords, elements, svectorsbuffer, tvectorsbuffer, normalsbuffer);
  82         for (i = 0;i < numverts;i++)
  83         {
  84                 // LordHavoc: alias models are backwards, apparently
  85                 vertices[i].normal[0] = normalsbuffer[i * 4 + 0];
  86                 vertices[i].normal[1] = normalsbuffer[i * 4 + 1];
  87                 vertices[i].normal[2] = normalsbuffer[i * 4 + 2];
  88                 vertices[i].svector[0] = svectorsbuffer[i * 4 + 0];
  89                 vertices[i].svector[1] = svectorsbuffer[i * 4 + 1];
  90                 vertices[i].svector[2] = svectorsbuffer[i * 4 + 2];
  91         }
  92 }
  93
  94 static void Mod_MDL_LoadFrames (qbyte* datapointer, int inverts, vec3_t scale, vec3_t translate, int *elements, float *texcoords, aliasvertex_t *posedata)
  95 {
  96         int i, f, pose, groupframes;
  97         float interval, *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
  98         daliasframetype_t *pframetype;
  99         daliasframe_t *pinframe;
 100         daliasgroup_t *group;
 101         daliasinterval_t *intervals;
 102         animscene_t *scene;
 103         pose = 0;
 104         scene = loadmodel->animscenes;
 105         vertexbuffer = Mem_Alloc(tempmempool, loadmodel->numverts * sizeof(float[4]) * 4);
 106         svectorsbuffer = vertexbuffer + loadmodel->numverts * 4;
 107         tvectorsbuffer = svectorsbuffer + loadmodel->numverts * 4;
 108         normalsbuffer = tvectorsbuffer + loadmodel->numverts * 4;
 109         for (f = 0;f < loadmodel->numframes;f++)
 110         {
 111                 pframetype = (daliasframetype_t *)datapointer;
 112                 datapointer += sizeof(daliasframetype_t);
 113                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 114                 {
 115                         // a single frame is still treated as a group
 116                         interval = 0.1f;
 117                         groupframes = 1;
 118                 }
 119                 else
 120                 {
 121                         // read group header
 122                         group = (daliasgroup_t *)datapointer;
 123                         datapointer += sizeof(daliasgroup_t);
 124                         groupframes = LittleLong (group->numframes);
 125
 126                         // intervals (time per frame)
 127                         intervals = (daliasinterval_t *)datapointer;
 128                         datapointer += sizeof(daliasinterval_t) * groupframes;
 129
 130                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 131                         if (interval < 0.01f)
 132                                 Host_Error("Mod_LoadAliasGroup: invalid interval");
 133                 }
 134
 135                 // get scene name from first frame
 136                 pinframe = (daliasframe_t *)datapointer;
 137
 138                 strcpy(scene->name, pinframe->name);
 139                 scene->firstframe = pose;
 140                 scene->framecount = groupframes;
 141                 scene->framerate = 1.0f / interval;
 142                 scene->loop = true;
 143                 scene++;
 144
 145                 // read frames
 146                 for (i = 0;i < groupframes;i++)
 147                 {
 148                         pinframe = (daliasframe_t *)datapointer;
 149                         datapointer += sizeof(daliasframe_t);
 150                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, posedata + pose * loadmodel->numverts);
 151                         Mod_BuildAliasVertexTextureVectors(loadmodel->numtris, elements, loadmodel->numverts, posedata + pose * loadmodel->numverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 152                         datapointer += sizeof(trivertx_t) * inverts;
 153                         pose++;
 154                 }
 155         }
 156         Mem_Free(vertexbuffer);
 157 }
 158
 159 static rtexture_t *GL_TextureForSkinLayer(const qbyte *in, int width, int height, const char *name, const unsigned int *palette, int precache)
 160 {
 161         int i;
 162         for (i = 0;i < width*height;i++)
 163                 if (((qbyte *)&palette[in[i]])[3] > 0)
 164                         return R_LoadTexture2D (loadmodel->texturepool, name, width, height, in, TEXTYPE_PALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0), palette);
 165         return NULL;
 166 }
 167
 168 static int Mod_LoadExternalSkin (char *basename, skinframe_t *skinframe, int precache)
 169 {
 170         skinframe->base   = loadtextureimagewithmaskandnmap(loadmodel->texturepool, va("%s_normal", basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 171         if (!skinframe->base)
 172                 skinframe->base   = loadtextureimagewithmaskandnmap(loadmodel->texturepool, basename, 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 173         skinframe->fog    = image_masktex;
 174         skinframe->nmap   = image_nmaptex;
 175         skinframe->gloss  = loadtextureimage(loadmodel->texturepool, va("%s_gloss" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 176         skinframe->pants  = loadtextureimage(loadmodel->texturepool, va("%s_pants" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 177         skinframe->shirt  = loadtextureimage(loadmodel->texturepool, va("%s_shirt" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 178         skinframe->glow   = loadtextureimage(loadmodel->texturepool, va("%s_glow"  , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 179         skinframe->merged = NULL;
 180         return skinframe->base != NULL || skinframe->pants != NULL || skinframe->shirt != NULL || skinframe->glow != NULL;
 181 }
 182
 183 static int Mod_LoadInternalSkin (char *basename, qbyte *skindata, int width, int height, skinframe_t *skinframe, int precache)
 184 {
 185         qbyte *temp1, *temp2;
 186         if (!skindata)
 187                 return false;
 188         temp1 = Mem_Alloc(loadmodel->mempool, width * height * 8);
 189         temp2 = temp1 + width * height * 4;
 190         Image_Copy8bitRGBA(skindata, temp1, width * height, palette_nofullbrights);
 191         Image_HeightmapToNormalmap(temp1, temp2, width, height, false, 1);
 192         skinframe->nmap   = R_LoadTexture2D(loadmodel->texturepool, va("%s_nmap", basename), width, height, temp2, TEXTYPE_RGBA, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0), NULL);
 193         Mem_Free(temp1);
 194         skinframe->gloss  = NULL;
 195         skinframe->pants  = GL_TextureForSkinLayer(skindata, width, height, va("%s_pants", basename), palette_pantsaswhite, false); // pants
 196         skinframe->shirt  = GL_TextureForSkinLayer(skindata, width, height, va("%s_shirt", basename), palette_shirtaswhite, false); // shirt
 197         skinframe->glow   = GL_TextureForSkinLayer(skindata, width, height, va("%s_glow", basename), palette_onlyfullbrights, precache); // glow
 198         if (skinframe->pants || skinframe->shirt)
 199         {
 200                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_normal", basename), palette_nocolormapnofullbrights, false); // normal (no special colors)
 201                 skinframe->merged = GL_TextureForSkinLayer(skindata, width, height, va("%s_body", basename), palette_nofullbrights, precache); // body (normal + pants + shirt, but not glow)
 202         }
 203         else
 204                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_base", basename), palette_nofullbrights, precache); // no special colors
 205         // quake model skins don't have alpha
 206         skinframe->fog = NULL;
 207         return true;
 208 }
 209
 210 void Mod_BuildMDLMD2MeshInfo(int *elements, float *texcoords, aliasvertex_t *posedata)
 211 {
 212         int i;
 213         aliasmesh_t *mesh;
 214         aliasskin_t *skin;
 215         aliaslayer_t *layer;
 216         skinframe_t *skinframe;
 217
 218         loadmodel->aliasnum_meshes = 1;
 219         mesh = loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 220         mesh->num_skins = 0;
 221         mesh->num_frames = 0;
 222         for (i = 0;i < loadmodel->numframes;i++)
 223                 mesh->num_frames += loadmodel->animscenes[i].framecount;
 224         for (i = 0;i < loadmodel->numskins;i++)
 225                 mesh->num_skins += loadmodel->skinscenes[i].framecount;
 226         mesh->num_triangles = loadmodel->numtris;
 227         mesh->num_vertices = loadmodel->numverts;
 228         mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 229         mesh->data_elements = elements;
 230         mesh->data_neighbors = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 231         Mod_ValidateElements(mesh->data_elements, loadmodel->numtris, loadmodel->numverts, __FILE__, __LINE__);
 232         Mod_BuildTriangleNeighbors(mesh->data_neighbors, elements, loadmodel->numtris);
 233         mesh->data_texcoords = texcoords;
 234         mesh->data_vertices = posedata;
 235         for (i = 0, skin = mesh->data_skins, skinframe = loadmodel->skinframes;i < mesh->num_skins;i++, skin++, skinframe++)
 236         {
 237                 skin->flags = 0;
 238                 // fog texture only exists if some pixels are transparent...
 239                 if (skinframe->fog != NULL)
 240                         skin->flags |= ALIASSKIN_TRANSPARENT;
 241                 // fog and gloss layers always exist
 242                 skin->num_layers = 2;
 243                 if (skinframe->glow != NULL)
 244                         skin->num_layers++;
 245                 if (skinframe->merged != NULL)
 246                         skin->num_layers += 2;
 247                 if (skinframe->base != NULL)
 248                         skin->num_layers += 2;
 249                 if (skinframe->pants != NULL)
 250                         skin->num_layers += 2;
 251                 if (skinframe->shirt != NULL)
 252                         skin->num_layers += 2;
 253                 layer = skin->data_layers = Mem_Alloc(loadmodel->mempool, skin->num_layers * sizeof(aliaslayer_t));
 254                 if (skinframe->glow != NULL)
 255                 {
 256                         layer->flags = 0;
 257                         layer->texture = skinframe->glow;
 258                         layer++;
 259                 }
 260                 if (skinframe->merged != NULL)
 261                 {
 262                         layer->flags = ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 263                         if (skinframe->glow != NULL)
 264                                 layer->flags |= ALIASLAYER_ADD;
 265                         layer->texture = skinframe->merged;
 266                         layer->nmap = skinframe->nmap;
 267                         layer++;
 268                 }
 269                 if (skinframe->base != NULL)
 270                 {
 271                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 272                         if (skinframe->glow != NULL)
 273                                 layer->flags |= ALIASLAYER_ADD;
 274                         layer->texture = skinframe->base;
 275                         layer->nmap = skinframe->nmap;
 276                         layer++;
 277                 }
 278                 if (skinframe->pants != NULL)
 279                 {
 280                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 281                         if (skinframe->glow != NULL || skinframe->base != NULL)
 282                                 layer->flags |= ALIASLAYER_ADD;
 283                         layer->texture = skinframe->pants;
 284                         layer->nmap = skinframe->nmap;
 285                         layer++;
 286                 }
 287                 if (skinframe->shirt != NULL)
 288                 {
 289                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 290                         if (skinframe->glow != NULL || skinframe->base != NULL || skinframe->pants != NULL)
 291                                 layer->flags |= ALIASLAYER_ADD;
 292                         layer->texture = skinframe->shirt;
 293                         layer->nmap = skinframe->nmap;
 294                         layer++;
 295                 }
 296                 layer->flags = ALIASLAYER_FOG;
 297                 layer->texture = skinframe->fog;
 298                 layer++;
 299                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_SPECULAR;
 300                 layer->texture = skinframe->gloss;
 301                 layer->nmap = skinframe->nmap;
 302                 layer++;
 303                 if (skinframe->merged != NULL)
 304                 {
 305                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 306                         layer->texture = skinframe->merged;
 307                         layer->nmap = skinframe->nmap;
 308                         layer++;
 309                 }
 310                 if (skinframe->base != NULL)
 311                 {
 312                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 313                         layer->texture = skinframe->base;
 314                         layer->nmap = skinframe->nmap;
 315                         layer++;
 316                 }
 317                 if (skinframe->pants != NULL)
 318                 {
 319                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_PANTS;
 320                         layer->texture = skinframe->pants;
 321                         layer->nmap = skinframe->nmap;
 322                         layer++;
 323                 }
 324                 if (skinframe->shirt != NULL)
 325                 {
 326                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 327                         layer->texture = skinframe->shirt;
 328                         layer->nmap = skinframe->nmap;
 329                         layer++;
 330                 }
 331         }
 332 }
 333
 334 #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);
 335 #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);
 336 extern void R_Model_Alias_Draw(entity_render_t *ent);
 337 extern void R_Model_Alias_DrawFakeShadow(entity_render_t *ent);
 338 extern void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 339 extern void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 340 void Mod_LoadAliasModel (model_t *mod, void *buffer)
 341 {
 342         int i, j, version, numverts, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins, *elements;
 343         float scales, scalet, scale[3], translate[3], interval, *texcoords;
 344         mdl_t *pinmodel;
 345         stvert_t *pinstverts;
 346         dtriangle_t *pintriangles;
 347         daliasskintype_t *pinskintype;
 348         daliasskingroup_t *pinskingroup;
 349         daliasskininterval_t *pinskinintervals;
 350         daliasframetype_t *pinframetype;
 351         daliasgroup_t *pinframegroup;
 352         aliasvertex_t *posedata;
 353         qbyte *datapointer, *startframes, *startskins;
 354         char name[MAX_QPATH];
 355         skinframe_t tempskinframe;
 356         animscene_t *tempskinscenes;
 357         skinframe_t *tempskinframes;
 358         modelyawradius = 0;
 359         modelradius = 0;
 360
 361         datapointer = buffer;
 362         pinmodel = (mdl_t *)datapointer;
 363         datapointer += sizeof(mdl_t);
 364
 365         version = LittleLong (pinmodel->version);
 366         if (version != ALIAS_VERSION)
 367                 Host_Error ("%s has wrong version number (%i should be %i)",
 368                                  loadmodel->name, version, ALIAS_VERSION);
 369
 370         loadmodel->type = mod_alias;
 371         loadmodel->aliastype = ALIASTYPE_ALIAS;
 372         loadmodel->DrawSky = NULL;
 373         loadmodel->Draw = R_Model_Alias_Draw;
 374         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 375         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 376         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 377
 378         loadmodel->numskins = LittleLong(pinmodel->numskins);
 379         BOUNDI(loadmodel->numskins,0,256);
 380         skinwidth = LittleLong (pinmodel->skinwidth);
 381         BOUNDI(skinwidth,0,4096);
 382         skinheight = LittleLong (pinmodel->skinheight);
 383         BOUNDI(skinheight,0,4096);
 384         loadmodel->numverts = numverts = LittleLong(pinmodel->numverts);
 385         BOUNDI(loadmodel->numverts,0,MAXALIASVERTS);
 386         loadmodel->numtris = LittleLong(pinmodel->numtris);
 387         BOUNDI(loadmodel->numtris,0,MAXALIASTRIS);
 388         loadmodel->numframes = LittleLong(pinmodel->numframes);
 389         BOUNDI(loadmodel->numframes,0,65536);
 390         loadmodel->synctype = LittleLong (pinmodel->synctype);
 391         BOUNDI(loadmodel->synctype,0,2);
 392         loadmodel->flags = LittleLong (pinmodel->flags);
 393
 394         for (i = 0;i < 3;i++)
 395         {
 396                 scale[i] = LittleFloat (pinmodel->scale[i]);
 397                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 398         }
 399
 400         startskins = datapointer;
 401         totalskins = 0;
 402         for (i = 0;i < loadmodel->numskins;i++)
 403         {
 404                 pinskintype = (daliasskintype_t *)datapointer;
 405                 datapointer += sizeof(daliasskintype_t);
 406                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 407                         groupskins = 1;
 408                 else
 409                 {
 410                         pinskingroup = (daliasskingroup_t *)datapointer;
 411                         datapointer += sizeof(daliasskingroup_t);
 412                         groupskins = LittleLong(pinskingroup->numskins);
 413                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 414                 }
 415
 416                 for (j = 0;j < groupskins;j++)
 417                 {
 418                         datapointer += skinwidth * skinheight;
 419                         totalskins++;
 420                 }
 421         }
 422
 423         pinstverts = (stvert_t *)datapointer;
 424         datapointer += sizeof(stvert_t) * numverts;
 425
 426         pintriangles = (dtriangle_t *)datapointer;
 427         datapointer += sizeof(dtriangle_t) * loadmodel->numtris;
 428
 429         startframes = datapointer;
 430         totalposes = 0;
 431         for (i = 0;i < loadmodel->numframes;i++)
 432         {
 433                 pinframetype = (daliasframetype_t *)datapointer;
 434                 datapointer += sizeof(daliasframetype_t);
 435                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 436                         groupframes = 1;
 437                 else
 438                 {
 439                         pinframegroup = (daliasgroup_t *)datapointer;
 440                         datapointer += sizeof(daliasgroup_t);
 441                         groupframes = LittleLong(pinframegroup->numframes);
 442                         datapointer += sizeof(daliasinterval_t) * groupframes;
 443                 }
 444
 445                 for (j = 0;j < groupframes;j++)
 446                 {
 447                         datapointer += sizeof(daliasframe_t);
 448                         datapointer += sizeof(trivertx_t) * numverts;
 449                         totalposes++;
 450                 }
 451         }
 452
 453         // load the skins
 454         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 455         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 456         totalskins = 0;
 457         datapointer = startskins;
 458         for (i = 0;i < loadmodel->numskins;i++)
 459         {
 460                 pinskintype = (daliasskintype_t *)datapointer;
 461                 datapointer += sizeof(daliasskintype_t);
 462
 463                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 464                 {
 465                         groupskins = 1;
 466                         interval = 0.1f;
 467                 }
 468                 else
 469                 {
 470                         pinskingroup = (daliasskingroup_t *)datapointer;
 471                         datapointer += sizeof(daliasskingroup_t);
 472
 473                         groupskins = LittleLong (pinskingroup->numskins);
 474
 475                         pinskinintervals = (daliasskininterval_t *)datapointer;
 476                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 477
 478                         interval = LittleFloat(pinskinintervals[0].interval);
 479                         if (interval < 0.01f)
 480                                 Host_Error("Mod_LoadAliasModel: invalid interval\n");
 481                 }
 482
 483                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 484                 loadmodel->skinscenes[i].firstframe = totalskins;
 485                 loadmodel->skinscenes[i].framecount = groupskins;
 486                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 487                 loadmodel->skinscenes[i].loop = true;
 488
 489                 for (j = 0;j < groupskins;j++)
 490                 {
 491                         if (groupskins > 1)
 492                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 493                         else
 494                                 sprintf (name, "%s_%i", loadmodel->name, i);
 495                         if (!Mod_LoadExternalSkin(name, loadmodel->skinframes + totalskins, i == 0))
 496                                 Mod_LoadInternalSkin(name, (qbyte *)datapointer, skinwidth, skinheight, loadmodel->skinframes + totalskins, i == 0);
 497                         datapointer += skinwidth * skinheight;
 498                         totalskins++;
 499                 }
 500         }
 501         // check for skins that don't exist in the model, but do exist as external images
 502         // (this was added because yummyluv kept pestering me about support for it)
 503         for (;;)
 504         {
 505                 sprintf (name, "%s_%i", loadmodel->name, loadmodel->numskins);
 506                 if (Mod_LoadExternalSkin(name, &tempskinframe, loadmodel->numskins == 0))
 507                 {
 508                         // expand the arrays to make room
 509                         tempskinscenes = loadmodel->skinscenes;
 510                         tempskinframes = loadmodel->skinframes;
 511                         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 512                         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, (totalskins + 1) * sizeof(skinframe_t));
 513                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 514                         memcpy(loadmodel->skinframes, tempskinframes, totalskins * sizeof(skinframe_t));
 515                         Mem_Free(tempskinscenes);
 516                         Mem_Free(tempskinframes);
 517                         // store the info about the new skin
 518                         strcpy(loadmodel->skinscenes[loadmodel->numskins].name, name);
 519                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 520                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 521                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 522                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 523                         loadmodel->skinframes[totalskins] = tempskinframe;
 524                         loadmodel->numskins++;
 525                         totalskins++;
 526                 }
 527                 else
 528                         break;
 529         }
 530
 531         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 532         scales = 1.0 / skinwidth;
 533         scalet = 1.0 / skinheight;
 534         for (i = 0;i < numverts;i++)
 535         {
 536                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 537                 vertst[i][0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 538                 vertst[i][1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 539                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 540                 vertst[i+numverts][1] = vertst[i][1];
 541                 vertusage[i] = 0;
 542                 vertusage[i+numverts] = 0;
 543         }
 544
 545 // load triangle data
 546         elements = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->numtris);
 547
 548         // count the vertices used
 549         for (i = 0;i < numverts*2;i++)
 550                 vertusage[i] = 0;
 551         for (i = 0;i < loadmodel->numtris;i++)
 552         {
 553                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 554                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 555                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 556                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 557                 {
 558                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 559                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 560                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 561                 }
 562                 vertusage[temptris[i][0]]++;
 563                 vertusage[temptris[i][1]]++;
 564                 vertusage[temptris[i][2]]++;
 565         }
 566         // build remapping table and compact array
 567         totalverts = 0;
 568         for (i = 0;i < numverts*2;i++)
 569         {
 570                 if (vertusage[i])
 571                 {
 572                         vertremap[i] = totalverts;
 573                         vertst[totalverts][0] = vertst[i][0];
 574                         vertst[totalverts][1] = vertst[i][1];
 575                         totalverts++;
 576                 }
 577                 else
 578                         vertremap[i] = -1; // not used at all
 579         }
 580         loadmodel->numverts = totalverts;
 581         // remap the triangle references
 582         for (i = 0;i < loadmodel->numtris;i++)
 583         {
 584                 elements[i*3+0] = vertremap[temptris[i][0]];
 585                 elements[i*3+1] = vertremap[temptris[i][1]];
 586                 elements[i*3+2] = vertremap[temptris[i][2]];
 587         }
 588         // store the texture coordinates
 589         texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[4]) * totalverts);
 590         for (i = 0;i < totalverts;i++)
 591         {
 592                 texcoords[i*4+0] = vertst[i][0];
 593                 texcoords[i*4+1] = vertst[i][1];
 594         }
 595
 596 // load the frames
 597         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 598         posedata = Mem_Alloc(loadmodel->mempool, sizeof(aliasvertex_t) * totalposes * totalverts);
 599
 600         // LordHavoc: doing proper bbox for model
 601         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 602         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 603
 604         Mod_MDL_LoadFrames (startframes, numverts, scale, translate, elements, texcoords, posedata);
 605
 606         modelyawradius = sqrt(modelyawradius);
 607         modelradius = sqrt(modelradius);
 608         for (j = 0;j < 3;j++)
 609         {
 610                 loadmodel->normalmins[j] = aliasbboxmin[j];
 611                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 612                 loadmodel->rotatedmins[j] = -modelradius;
 613                 loadmodel->rotatedmaxs[j] = modelradius;
 614         }
 615         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 616         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 617         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 618         loadmodel->radius = modelradius;
 619         loadmodel->radius2 = modelradius * modelradius;
 620
 621         Mod_BuildMDLMD2MeshInfo(elements, texcoords, posedata);
 622 }
 623
 624 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int *vertremap)
 625 {
 626         int i;
 627         float dist;
 628         trivertx_t *in;
 629         vec3_t temp;
 630         for (i = 0;i < loadmodel->numverts;i++)
 631         {
 632                 in = v + vertremap[i];
 633                 temp[0] = in->v[0] * scale[0] + translate[0];
 634                 temp[1] = in->v[1] * scale[1] + translate[1];
 635                 temp[2] = in->v[2] * scale[2] + translate[2];
 636                 // update bounding box
 637                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
 638                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
 639                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
 640                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
 641                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
 642                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
 643                 dist = temp[0]*temp[0]+temp[1]*temp[1];
 644                 if (modelyawradius < dist)
 645                         modelyawradius = dist;
 646                 dist += temp[2]*temp[2];
 647                 if (modelradius < dist)
 648                         modelradius = dist;
 649                 VectorCopy(temp, out[i].origin);
 650         }
 651 }
 652
 653 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 654 {
 655         int i, j, k, hashindex, num, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end, *elements;
 656         float *stverts, s, t, scale[3], translate[3], *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer, *texcoords;
 657         aliasvertex_t *posedata;
 658         md2_t *pinmodel;
 659         qbyte *base, *datapointer;
 660         md2frame_t *pinframe;
 661         char *inskin;
 662         md2triangle_t *intri;
 663         unsigned short *inst;
 664         struct md2verthash_s
 665         {
 666                 struct md2verthash_s *next;
 667                 int xyz;
 668                 float st[2];
 669         }
 670         *hash, **md2verthash, *md2verthashdata;
 671
 672         pinmodel = buffer;
 673         base = buffer;
 674
 675         version = LittleLong (pinmodel->version);
 676         if (version != MD2ALIAS_VERSION)
 677                 Host_Error ("%s has wrong version number (%i should be %i)",
 678                         loadmodel->name, version, MD2ALIAS_VERSION);
 679
 680         loadmodel->type = mod_alias;
 681         loadmodel->aliastype = ALIASTYPE_ALIAS;
 682         loadmodel->DrawSky = NULL;
 683         loadmodel->Draw = R_Model_Alias_Draw;
 684         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 685         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 686         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 687
 688         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 689                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 690         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 691                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 692         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 693                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 694         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 695                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 696
 697         end = LittleLong(pinmodel->ofs_end);
 698         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 699                 Host_Error ("%s is not a valid model", loadmodel->name);
 700         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 701                 Host_Error ("%s is not a valid model", loadmodel->name);
 702         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 703                 Host_Error ("%s is not a valid model", loadmodel->name);
 704         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 705                 Host_Error ("%s is not a valid model", loadmodel->name);
 706         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 707                 Host_Error ("%s is not a valid model", loadmodel->name);
 708
 709         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 710         numxyz = LittleLong(pinmodel->num_xyz);
 711         numst = LittleLong(pinmodel->num_st);
 712         loadmodel->numtris = LittleLong(pinmodel->num_tris);
 713         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 714
 715         loadmodel->flags = 0; // there are no MD2 flags
 716         loadmodel->synctype = ST_RAND;
 717
 718         // load the skins
 719         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 720         if (loadmodel->numskins)
 721         {
 722                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins + sizeof(skinframe_t) * loadmodel->numskins);
 723                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + loadmodel->numskins);
 724                 for (i = 0;i < loadmodel->numskins;i++)
 725                 {
 726                         loadmodel->skinscenes[i].firstframe = i;
 727                         loadmodel->skinscenes[i].framecount = 1;
 728                         loadmodel->skinscenes[i].loop = true;
 729                         loadmodel->skinscenes[i].framerate = 10;
 730                         loadmodel->skinframes[i].base = loadtextureimagewithmaskandnmap (loadmodel->texturepool, inskin, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 731                         loadmodel->skinframes[i].fog = image_masktex;
 732                         loadmodel->skinframes[i].nmap = image_nmaptex;
 733                         loadmodel->skinframes[i].gloss = NULL;
 734                         loadmodel->skinframes[i].pants = NULL;
 735                         loadmodel->skinframes[i].shirt = NULL;
 736                         loadmodel->skinframes[i].glow = NULL;
 737                         loadmodel->skinframes[i].merged = NULL;
 738                         inskin += MD2MAX_SKINNAME;
 739                 }
 740         }
 741
 742         // load the triangles and stvert data
 743         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 744         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 745         skinwidth = LittleLong(pinmodel->skinwidth);
 746         skinheight = LittleLong(pinmodel->skinheight);
 747
 748         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 749         s = 1.0f / skinwidth;
 750         t = 1.0f / skinheight;
 751         for (i = 0;i < numst;i++)
 752         {
 753                 j = (unsigned short) LittleShort(inst[i*2+0]);
 754                 k = (unsigned short) LittleShort(inst[i*2+1]);
 755                 if (j >= skinwidth || k >= skinheight)
 756                 {
 757                         Mem_Free(stverts);
 758                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 759                 }
 760                 stverts[i*2+0] = j * s;
 761                 stverts[i*2+1] = k * t;
 762         }
 763
 764         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 765         md2verthashdata = Mem_Alloc(tempmempool, loadmodel->numtris * 3 * sizeof(*hash));
 766         // swap the triangle list
 767         num = 0;
 768         elements = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 769         for (i = 0;i < loadmodel->numtris;i++)
 770         {
 771                 for (j = 0;j < 3;j++)
 772                 {
 773                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 774                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 775                         if (xyz >= numxyz || st >= numst)
 776                         {
 777                                 Mem_Free(md2verthash);
 778                                 Mem_Free(md2verthashdata);
 779                                 Mem_Free(stverts);
 780                                 if (xyz >= numxyz)
 781                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 782                                 if (st >= numst)
 783                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 784                         }
 785                         s = stverts[st*2+0];
 786                         t = stverts[st*2+1];
 787                         hashindex = (xyz * 17 + st) & 255;
 788                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 789                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 790                                         break;
 791                         if (hash == NULL)
 792                         {
 793                                 hash = md2verthashdata + num++;
 794                                 hash->xyz = xyz;
 795                                 hash->st[0] = s;
 796                                 hash->st[1] = t;
 797                                 hash->next = md2verthash[hashindex];
 798                                 md2verthash[hashindex] = hash;
 799                         }
 800                         elements[i*3+j] = (hash - md2verthashdata);
 801                 }
 802         }
 803
 804         Mem_Free(stverts);
 805
 806         loadmodel->numverts = num;
 807         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 808         texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[4]));
 809         for (i = 0;i < num;i++)
 810         {
 811                 hash = md2verthashdata + i;
 812                 vertremap[i] = hash->xyz;
 813                 texcoords[i*4+0] = hash->st[0];
 814                 texcoords[i*4+1] = hash->st[1];
 815         }
 816
 817         Mem_Free(md2verthash);
 818         Mem_Free(md2verthashdata);
 819
 820         // load frames
 821         // LordHavoc: doing proper bbox for model
 822         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 823         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 824         modelyawradius = 0;
 825         modelradius = 0;
 826
 827         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 828         // load the frames
 829         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 830         posedata = Mem_Alloc(loadmodel->mempool, loadmodel->numverts * loadmodel->numframes * sizeof(trivertx_t));
 831
 832         vertexbuffer = Mem_Alloc(tempmempool, loadmodel->numverts * sizeof(float[4]) * 4);
 833         svectorsbuffer = vertexbuffer + loadmodel->numverts * 4;
 834         tvectorsbuffer = svectorsbuffer + loadmodel->numverts * 4;
 835         normalsbuffer = tvectorsbuffer + loadmodel->numverts * 4;
 836         for (i = 0;i < loadmodel->numframes;i++)
 837         {
 838                 pinframe = (md2frame_t *)datapointer;
 839                 datapointer += sizeof(md2frame_t);
 840                 for (j = 0;j < 3;j++)
 841                 {
 842                         scale[j] = LittleFloat(pinframe->scale[j]);
 843                         translate[j] = LittleFloat(pinframe->translate[j]);
 844                 }
 845                 Mod_MD2_ConvertVerts(scale, translate, (void *)datapointer, posedata + i * loadmodel->numverts, vertremap);
 846                 Mod_BuildAliasVertexTextureVectors(loadmodel->numtris, elements, loadmodel->numverts, posedata + i * loadmodel->numverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 847                 datapointer += numxyz * sizeof(trivertx_t);
 848
 849                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 850                 loadmodel->animscenes[i].firstframe = i;
 851                 loadmodel->animscenes[i].framecount = 1;
 852                 loadmodel->animscenes[i].framerate = 10;
 853                 loadmodel->animscenes[i].loop = true;
 854         }
 855         Mem_Free(vertexbuffer);
 856
 857         Mem_Free(vertremap);
 858
 859         // LordHavoc: model bbox
 860         modelyawradius = sqrt(modelyawradius);
 861         modelradius = sqrt(modelradius);
 862         for (j = 0;j < 3;j++)
 863         {
 864                 loadmodel->normalmins[j] = aliasbboxmin[j];
 865                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 866                 loadmodel->rotatedmins[j] = -modelradius;
 867                 loadmodel->rotatedmaxs[j] = modelradius;
 868         }
 869         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 870         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 871         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 872         loadmodel->radius = modelradius;
 873         loadmodel->radius2 = modelradius * modelradius;
 874
 875         Mod_BuildMDLMD2MeshInfo(elements, texcoords, posedata);
 876 }
 877
 878 extern void R_Model_Zymotic_DrawSky(entity_render_t *ent);
 879 extern void R_Model_Zymotic_Draw(entity_render_t *ent);
 880 extern void R_Model_Zymotic_DrawFakeShadow(entity_render_t *ent);
 881 extern void R_Model_Zymotic_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 882 extern void R_Model_Zymotic_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 883 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 884 {
 885         zymtype1header_t *pinmodel, *pheader;
 886         qbyte *pbase;
 887
 888         pinmodel = (void *)buffer;
 889         pbase = buffer;
 890         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 891                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 892         if (BigLong(pinmodel->type) != 1)
 893                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 894
 895         loadmodel->type = mod_alias;
 896         loadmodel->aliastype = ALIASTYPE_ZYM;
 897         loadmodel->DrawSky = NULL;
 898         loadmodel->Draw = R_Model_Zymotic_Draw;
 899         loadmodel->DrawFakeShadow = NULL;//R_Model_Zymotic_DrawFakeShadow;
 900         loadmodel->DrawShadowVolume = NULL;//R_Model_Zymotic_DrawShadowVolume;
 901         loadmodel->DrawLight = NULL;//R_Model_Zymotic_DrawLight;
 902
 903         // byteswap header
 904         pheader = pinmodel;
 905         pheader->type = BigLong(pinmodel->type);
 906         pheader->filesize = BigLong(pinmodel->filesize);
 907         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
 908         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
 909         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
 910         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
 911         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
 912         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
 913         pheader->radius = BigFloat(pinmodel->radius);
 914         pheader->numverts = loadmodel->zymnum_verts = BigLong(pinmodel->numverts);
 915         pheader->numtris = loadmodel->zymnum_tris = BigLong(pinmodel->numtris);
 916         pheader->numshaders = loadmodel->zymnum_shaders = BigLong(pinmodel->numshaders);
 917         pheader->numbones = loadmodel->zymnum_bones = BigLong(pinmodel->numbones);
 918         pheader->numscenes = loadmodel->zymnum_scenes = BigLong(pinmodel->numscenes);
 919         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
 920         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
 921         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
 922         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
 923         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
 924         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
 925         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
 926         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
 927         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
 928         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
 929         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
 930         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
 931         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
 932         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
 933         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
 934         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
 935         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
 936         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
 937
 938         loadmodel->flags = 0; // there are no flags
 939         loadmodel->numframes = pheader->numscenes;
 940         loadmodel->synctype = ST_SYNC;
 941         loadmodel->numtris = pheader->numtris;
 942         loadmodel->numverts = 0;
 943
 944         {
 945                 unsigned int i;
 946                 float modelradius, corner[2];
 947                 // model bbox
 948                 modelradius = pheader->radius;
 949                 for (i = 0;i < 3;i++)
 950                 {
 951                         loadmodel->normalmins[i] = pheader->mins[i];
 952                         loadmodel->normalmaxs[i] = pheader->maxs[i];
 953                         loadmodel->rotatedmins[i] = -modelradius;
 954                         loadmodel->rotatedmaxs[i] = modelradius;
 955                 }
 956                 corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 957                 corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 958                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 959                 if (loadmodel->yawmaxs[0] > modelradius)
 960                         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 961                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 962                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
 963                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 964                 loadmodel->radius = modelradius;
 965                 loadmodel->radius2 = modelradius * modelradius;
 966         }
 967
 968         {
 969                 // FIXME: add shaders, and make them switchable shader sets and...
 970                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 971                 loadmodel->skinscenes[0].firstframe = 0;
 972                 loadmodel->skinscenes[0].framecount = 1;
 973                 loadmodel->skinscenes[0].loop = true;
 974                 loadmodel->skinscenes[0].framerate = 10;
 975                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 976                 loadmodel->skinframes->base = NULL;
 977                 loadmodel->skinframes->fog = NULL;
 978                 loadmodel->skinframes->pants = NULL;
 979                 loadmodel->skinframes->shirt = NULL;
 980                 loadmodel->skinframes->glow = NULL;
 981                 loadmodel->skinframes->merged = NULL;
 982                 loadmodel->numskins = 1;
 983         }
 984
 985         // go through the lumps, swapping things
 986
 987         {
 988                 int i, numposes;
 989                 zymscene_t *scene;
 990         //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 991                 loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 992                 scene = (void *) (pheader->lump_scenes.start + pbase);
 993                 numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
 994                 for (i = 0;i < pheader->numscenes;i++)
 995                 {
 996                         memcpy(loadmodel->animscenes[i].name, scene->name, 32);
 997                         loadmodel->animscenes[i].firstframe = BigLong(scene->start);
 998                         loadmodel->animscenes[i].framecount = BigLong(scene->length);
 999                         loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1000                         loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1001                         if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1002                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
1003                         if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1004                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1005                         if (loadmodel->animscenes[i].framerate < 0)
1006                                 Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
1007                         scene++;
1008                 }
1009         }
1010
1011         {
1012                 int i;
1013                 float *poses;
1014         //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1015                 loadmodel->zymdata_poses = Mem_Alloc(loadmodel->mempool, pheader->lump_poses.length);
1016                 poses = (void *) (pheader->lump_poses.start + pbase);
1017                 for (i = 0;i < pheader->lump_poses.length / 4;i++)
1018                         loadmodel->zymdata_poses[i] = BigFloat(poses[i]);
1019         }
1020
1021         {
1022                 int i;
1023                 zymbone_t *bone;
1024         //      zymlump_t lump_bones; // zymbone_t bone[numbones];
1025                 loadmodel->zymdata_bones = Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(zymbone_t));
1026                 bone = (void *) (pheader->lump_bones.start + pbase);
1027                 for (i = 0;i < pheader->numbones;i++)
1028                 {
1029                         memcpy(loadmodel->zymdata_bones[i].name, bone[i].name, sizeof(bone[i].name));
1030                         loadmodel->zymdata_bones[i].flags = BigLong(bone[i].flags);
1031                         loadmodel->zymdata_bones[i].parent = BigLong(bone[i].parent);
1032                         if (loadmodel->zymdata_bones[i].parent >= i)
1033                                 Host_Error("Mod_LoadZymoticModel: bone[%i].parent >= %i in %s\n", i, i, loadmodel->name);
1034                 }
1035         }
1036
1037         {
1038                 int i, *bonecount;
1039         //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1040                 loadmodel->zymdata_vertbonecounts = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1041                 bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
1042                 for (i = 0;i < pheader->numverts;i++)
1043                 {
1044                         loadmodel->zymdata_vertbonecounts[i] = BigLong(bonecount[i]);
1045                         if (loadmodel->zymdata_vertbonecounts[i] < 1)
1046                                 Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
1047                 }
1048         }
1049
1050         {
1051                 int i;
1052                 zymvertex_t *vertdata;
1053         //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1054                 loadmodel->zymdata_verts = Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1055                 vertdata = (void *) (pheader->lump_verts.start + pbase);
1056                 for (i = 0;i < pheader->lump_verts.length / (int) sizeof(zymvertex_t);i++)
1057                 {
1058                         loadmodel->zymdata_verts[i].bonenum = BigLong(vertdata[i].bonenum);
1059                         loadmodel->zymdata_verts[i].origin[0] = BigFloat(vertdata[i].origin[0]);
1060                         loadmodel->zymdata_verts[i].origin[1] = BigFloat(vertdata[i].origin[1]);
1061                         loadmodel->zymdata_verts[i].origin[2] = BigFloat(vertdata[i].origin[2]);
1062                 }
1063         }
1064
1065         {
1066                 int i;
1067                 float *intexcoord, *outtexcoord;
1068         //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1069                 loadmodel->zymdata_texcoords = outtexcoord = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(float[4]));
1070                 intexcoord = (void *) (pheader->lump_texcoords.start + pbase);
1071                 for (i = 0;i < pheader->numverts;i++)
1072                 {
1073                         outtexcoord[i*4+0] = BigFloat(intexcoord[i*2+0]);
1074                         // flip T coordinate for OpenGL
1075                         outtexcoord[i*4+1] = 1 - BigFloat(intexcoord[i*2+1]);
1076                 }
1077         }
1078
1079         {
1080                 int i, count, *renderlist, *renderlistend, *outrenderlist;
1081         //      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)
1082                 loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, pheader->lump_render.length);
1083                 // byteswap, validate, and swap winding order of tris
1084                 count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1085                 if (pheader->lump_render.length != count)
1086                         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);
1087                 outrenderlist = loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, count);
1088                 renderlist = (void *) (pheader->lump_render.start + pbase);
1089                 renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
1090                 for (i = 0;i < pheader->numshaders;i++)
1091                 {
1092                         if (renderlist >= renderlistend)
1093                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1094                         count = BigLong(*renderlist);renderlist++;
1095                         if (renderlist + count * 3 > renderlistend)
1096                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1097                         *outrenderlist++ = count;
1098                         while (count--)
1099                         {
1100                                 outrenderlist[2] = BigLong(renderlist[0]);
1101                                 outrenderlist[1] = BigLong(renderlist[1]);
1102                                 outrenderlist[0] = BigLong(renderlist[2]);
1103                                 if ((unsigned int)outrenderlist[0] >= (unsigned int)pheader->numverts
1104                                  || (unsigned int)outrenderlist[1] >= (unsigned int)pheader->numverts
1105                                  || (unsigned int)outrenderlist[2] >= (unsigned int)pheader->numverts)
1106                                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
1107                                 renderlist += 3;
1108                                 outrenderlist += 3;
1109                         }
1110                 }
1111         }
1112
1113         {
1114                 int i;
1115                 char *shadername;
1116         //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1117                 loadmodel->zymdata_textures = Mem_Alloc(loadmodel->mempool, pheader->numshaders * sizeof(rtexture_t *));
1118                 shadername = (void *) (pheader->lump_shaders.start + pbase);
1119                 for (i = 0;i < pheader->numshaders;i++)
1120                         loadmodel->zymdata_textures[i] = loadtextureimage(loadmodel->texturepool, shadername + i * 32, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0));
1121         }
1122
1123         {
1124         //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1125                 loadmodel->zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1126                 memcpy(loadmodel->zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1127         }
1128 }