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)
  95 {
  96         daliasframetype_t       *pframetype;
  97         daliasframe_t           *pinframe;
  98         daliasgroup_t           *group;
  99         daliasinterval_t        *intervals;
 100         int                                     i, f, pose, groupframes;
 101         float                           interval;
 102         animscene_t                     *scene;
 103         float                           *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 104         pose = 0;
 105         scene = loadmodel->animscenes;
 106         vertexbuffer = Mem_Alloc(tempmempool, loadmodel->numverts * sizeof(float[4]) * 4);
 107         svectorsbuffer = vertexbuffer + loadmodel->numverts * 4;
 108         tvectorsbuffer = svectorsbuffer + loadmodel->numverts * 4;
 109         normalsbuffer = tvectorsbuffer + loadmodel->numverts * 4;
 110         for (f = 0;f < loadmodel->numframes;f++)
 111         {
 112                 pframetype = (daliasframetype_t *)datapointer;
 113                 datapointer += sizeof(daliasframetype_t);
 114                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 115                 {
 116                         // a single frame is still treated as a group
 117                         interval = 0.1f;
 118                         groupframes = 1;
 119                 }
 120                 else
 121                 {
 122                         // read group header
 123                         group = (daliasgroup_t *)datapointer;
 124                         datapointer += sizeof(daliasgroup_t);
 125                         groupframes = LittleLong (group->numframes);
 126
 127                         // intervals (time per frame)
 128                         intervals = (daliasinterval_t *)datapointer;
 129                         datapointer += sizeof(daliasinterval_t) * groupframes;
 130
 131                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 132                         if (interval < 0.01f)
 133                                 Host_Error("Mod_LoadAliasGroup: invalid interval");
 134                 }
 135
 136                 // get scene name from first frame
 137                 pinframe = (daliasframe_t *)datapointer;
 138
 139                 strcpy(scene->name, pinframe->name);
 140                 scene->firstframe = pose;
 141                 scene->framecount = groupframes;
 142                 scene->framerate = 1.0f / interval;
 143                 scene->loop = true;
 144                 scene++;
 145
 146                 // read frames
 147                 for (i = 0;i < groupframes;i++)
 148                 {
 149                         pinframe = (daliasframe_t *)datapointer;
 150                         datapointer += sizeof(daliasframe_t);
 151                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, loadmodel->mdlmd2data_pose + pose * loadmodel->numverts);
 152                         Mod_BuildAliasVertexTextureVectors(loadmodel->numtris, loadmodel->mdlmd2data_indices, loadmodel->numverts, loadmodel->mdlmd2data_pose + pose * loadmodel->numverts, loadmodel->mdlmd2data_texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 153                         datapointer += sizeof(trivertx_t) * inverts;
 154                         pose++;
 155                 }
 156         }
 157         Mem_Free(vertexbuffer);
 158 }
 159
 160 static rtexture_t *GL_TextureForSkinLayer(const qbyte *in, int width, int height, const char *name, const unsigned int *palette, int precache)
 161 {
 162         int i;
 163         for (i = 0;i < width*height;i++)
 164                 if (((qbyte *)&palette[in[i]])[3] > 0)
 165                         return R_LoadTexture2D (loadmodel->texturepool, name, width, height, in, TEXTYPE_PALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0), palette);
 166         return NULL;
 167 }
 168
 169 static int Mod_LoadExternalSkin (char *basename, skinframe_t *skinframe, int precache)
 170 {
 171         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);
 172         if (!skinframe->base)
 173                 skinframe->base   = loadtextureimagewithmaskandnmap(loadmodel->texturepool, basename, 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 174         skinframe->fog    = image_masktex;
 175         skinframe->nmap   = image_nmaptex;
 176         skinframe->gloss  = loadtextureimage(loadmodel->texturepool, va("%s_gloss" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 177         skinframe->pants  = loadtextureimage(loadmodel->texturepool, va("%s_pants" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 178         skinframe->shirt  = loadtextureimage(loadmodel->texturepool, va("%s_shirt" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 179         skinframe->glow   = loadtextureimage(loadmodel->texturepool, va("%s_glow"  , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 180         skinframe->merged = NULL;
 181         return skinframe->base != NULL || skinframe->pants != NULL || skinframe->shirt != NULL || skinframe->glow != NULL;
 182 }
 183
 184 static int Mod_LoadInternalSkin (char *basename, qbyte *skindata, int width, int height, skinframe_t *skinframe, int precache)
 185 {
 186         qbyte *temp1, *temp2;
 187         if (!skindata)
 188                 return false;
 189         temp1 = Mem_Alloc(loadmodel->mempool, width * height * 8);
 190         temp2 = temp1 + width * height * 4;
 191         Image_Copy8bitRGBA(skindata, temp1, width * height, palette_nofullbrights);
 192         Image_HeightmapToNormalmap(temp1, temp2, width, height, false, 1);
 193         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);
 194         Mem_Free(temp1);
 195         skinframe->gloss  = NULL;
 196         skinframe->pants  = GL_TextureForSkinLayer(skindata, width, height, va("%s_pants", basename), palette_pantsaswhite, false); // pants
 197         skinframe->shirt  = GL_TextureForSkinLayer(skindata, width, height, va("%s_shirt", basename), palette_shirtaswhite, false); // shirt
 198         skinframe->glow   = GL_TextureForSkinLayer(skindata, width, height, va("%s_glow", basename), palette_onlyfullbrights, precache); // glow
 199         if (skinframe->pants || skinframe->shirt)
 200         {
 201                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_normal", basename), palette_nocolormapnofullbrights, false); // normal (no special colors)
 202                 skinframe->merged = GL_TextureForSkinLayer(skindata, width, height, va("%s_body", basename), palette_nofullbrights, precache); // body (normal + pants + shirt, but not glow)
 203         }
 204         else
 205                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_base", basename), palette_nofullbrights, precache); // no special colors
 206         // quake model skins don't have alpha
 207         skinframe->fog = NULL;
 208         return true;
 209 }
 210
 211 void Mod_BuildMDLMD2MeshInfo(void)
 212 {
 213         int i;
 214         aliasmesh_t *mesh;
 215         aliasskin_t *skin;
 216         aliaslayer_t *layer;
 217         skinframe_t *skinframe;
 218
 219         loadmodel->mdlmd2data_triangleneighbors = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 220         Mod_ValidateElements(loadmodel->mdlmd2data_indices, loadmodel->numtris, loadmodel->numverts, __FILE__, __LINE__);
 221         Mod_BuildTriangleNeighbors(loadmodel->mdlmd2data_triangleneighbors, loadmodel->mdlmd2data_indices, loadmodel->numtris);
 222
 223         loadmodel->mdlmd2num_meshes = 1;
 224         mesh = loadmodel->mdlmd2data_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->mdlmd2num_meshes * sizeof(aliasmesh_t));
 225         mesh->num_skins = 0;
 226         mesh->num_frames = 0;
 227         for (i = 0;i < loadmodel->numframes;i++)
 228                 mesh->num_frames += loadmodel->animscenes[i].framecount;
 229         for (i = 0;i < loadmodel->numskins;i++)
 230                 mesh->num_skins += loadmodel->skinscenes[i].framecount;
 231         mesh->num_triangles = loadmodel->numtris;
 232         mesh->num_vertices = loadmodel->numverts;
 233         mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 234         mesh->data_elements = loadmodel->mdlmd2data_indices;
 235         mesh->data_neighbors = loadmodel->mdlmd2data_triangleneighbors;
 236         mesh->data_texcoords = loadmodel->mdlmd2data_texcoords;
 237         mesh->data_vertices = loadmodel->mdlmd2data_pose;
 238         for (i = 0, skin = mesh->data_skins, skinframe = loadmodel->skinframes;i < mesh->num_skins;i++, skin++, skinframe++)
 239         {
 240                 skin->flags = 0;
 241                 // fog texture only exists if some pixels are transparent...
 242                 if (skinframe->fog != NULL)
 243                         skin->flags |= ALIASSKIN_TRANSPARENT;
 244                 // fog and gloss layers always exist
 245                 skin->num_layers = 2;
 246                 if (skinframe->glow != NULL)
 247                         skin->num_layers++;
 248                 if (skinframe->merged != NULL)
 249                         skin->num_layers += 2;
 250                 if (skinframe->base != NULL)
 251                         skin->num_layers += 2;
 252                 if (skinframe->pants != NULL)
 253                         skin->num_layers += 2;
 254                 if (skinframe->shirt != NULL)
 255                         skin->num_layers += 2;
 256                 layer = skin->data_layers = Mem_Alloc(loadmodel->mempool, skin->num_layers * sizeof(aliaslayer_t));
 257                 if (skinframe->glow != NULL)
 258                 {
 259                         layer->flags = 0;
 260                         layer->texture = skinframe->glow;
 261                         layer++;
 262                 }
 263                 if (skinframe->merged != NULL)
 264                 {
 265                         layer->flags = ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 266                         if (skinframe->glow != NULL)
 267                                 layer->flags |= ALIASLAYER_ADD;
 268                         layer->texture = skinframe->merged;
 269                         layer->nmap = skinframe->nmap;
 270                         layer++;
 271                 }
 272                 if (skinframe->base != NULL)
 273                 {
 274                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 275                         if (skinframe->glow != NULL)
 276                                 layer->flags |= ALIASLAYER_ADD;
 277                         layer->texture = skinframe->base;
 278                         layer->nmap = skinframe->nmap;
 279                         layer++;
 280                 }
 281                 if (skinframe->pants != NULL)
 282                 {
 283                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 284                         if (skinframe->glow != NULL || skinframe->base != NULL)
 285                                 layer->flags |= ALIASLAYER_ADD;
 286                         layer->texture = skinframe->pants;
 287                         layer->nmap = skinframe->nmap;
 288                         layer++;
 289                 }
 290                 if (skinframe->shirt != NULL)
 291                 {
 292                         layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 293                         if (skinframe->glow != NULL || skinframe->base != NULL || skinframe->pants != NULL)
 294                                 layer->flags |= ALIASLAYER_ADD;
 295                         layer->texture = skinframe->shirt;
 296                         layer->nmap = skinframe->nmap;
 297                         layer++;
 298                 }
 299                 layer->flags = ALIASLAYER_FOG;
 300                 layer->texture = skinframe->fog;
 301                 layer++;
 302                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_SPECULAR;
 303                 layer->texture = skinframe->gloss;
 304                 layer->nmap = skinframe->nmap;
 305                 layer++;
 306                 if (skinframe->merged != NULL)
 307                 {
 308                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 309                         layer->texture = skinframe->merged;
 310                         layer->nmap = skinframe->nmap;
 311                         layer++;
 312                 }
 313                 if (skinframe->base != NULL)
 314                 {
 315                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 316                         layer->texture = skinframe->base;
 317                         layer->nmap = skinframe->nmap;
 318                         layer++;
 319                 }
 320                 if (skinframe->pants != NULL)
 321                 {
 322                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_PANTS;
 323                         layer->texture = skinframe->pants;
 324                         layer->nmap = skinframe->nmap;
 325                         layer++;
 326                 }
 327                 if (skinframe->shirt != NULL)
 328                 {
 329                         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 330                         layer->texture = skinframe->shirt;
 331                         layer->nmap = skinframe->nmap;
 332                         layer++;
 333                 }
 334         }
 335 }
 336
 337 #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);
 338 #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);
 339 extern void R_Model_Alias_Draw(entity_render_t *ent);
 340 extern void R_Model_Alias_DrawFakeShadow(entity_render_t *ent);
 341 extern void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 342 extern void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 343 void Mod_LoadAliasModel (model_t *mod, void *buffer)
 344 {
 345         int                                             i, j, version, numverts, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins;
 346         mdl_t                                   *pinmodel;
 347         stvert_t                                *pinstverts;
 348         dtriangle_t                             *pintriangles;
 349         daliasskintype_t                *pinskintype;
 350         daliasskingroup_t               *pinskingroup;
 351         daliasskininterval_t    *pinskinintervals;
 352         daliasframetype_t               *pinframetype;
 353         daliasgroup_t                   *pinframegroup;
 354         float                                   scales, scalet, scale[3], translate[3], interval;
 355         qbyte                                   *datapointer, *startframes, *startskins;
 356         char                                    name[MAX_QPATH];
 357         skinframe_t                             tempskinframe;
 358         animscene_t                             *tempskinscenes;
 359         skinframe_t                             *tempskinframes;
 360         modelyawradius = 0;
 361         modelradius = 0;
 362
 363         datapointer = buffer;
 364         pinmodel = (mdl_t *)datapointer;
 365         datapointer += sizeof(mdl_t);
 366
 367         version = LittleLong (pinmodel->version);
 368         if (version != ALIAS_VERSION)
 369                 Host_Error ("%s has wrong version number (%i should be %i)",
 370                                  loadmodel->name, version, ALIAS_VERSION);
 371
 372         loadmodel->type = mod_alias;
 373         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 374         loadmodel->DrawSky = NULL;
 375         loadmodel->Draw = R_Model_Alias_Draw;
 376         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 377         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 378         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 379
 380         loadmodel->numskins = LittleLong(pinmodel->numskins);
 381         BOUNDI(loadmodel->numskins,0,256);
 382         skinwidth = LittleLong (pinmodel->skinwidth);
 383         BOUNDI(skinwidth,0,4096);
 384         skinheight = LittleLong (pinmodel->skinheight);
 385         BOUNDI(skinheight,0,4096);
 386         loadmodel->numverts = numverts = LittleLong(pinmodel->numverts);
 387         BOUNDI(loadmodel->numverts,0,MAXALIASVERTS);
 388         loadmodel->numtris = LittleLong(pinmodel->numtris);
 389         BOUNDI(loadmodel->numtris,0,MAXALIASTRIS);
 390         loadmodel->numframes = LittleLong(pinmodel->numframes);
 391         BOUNDI(loadmodel->numframes,0,65536);
 392         loadmodel->synctype = LittleLong (pinmodel->synctype);
 393         BOUNDI(loadmodel->synctype,0,2);
 394         loadmodel->flags = LittleLong (pinmodel->flags);
 395
 396         for (i = 0;i < 3;i++)
 397         {
 398                 scale[i] = LittleFloat (pinmodel->scale[i]);
 399                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 400         }
 401
 402         startskins = datapointer;
 403         totalskins = 0;
 404         for (i = 0;i < loadmodel->numskins;i++)
 405         {
 406                 pinskintype = (daliasskintype_t *)datapointer;
 407                 datapointer += sizeof(daliasskintype_t);
 408                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 409                         groupskins = 1;
 410                 else
 411                 {
 412                         pinskingroup = (daliasskingroup_t *)datapointer;
 413                         datapointer += sizeof(daliasskingroup_t);
 414                         groupskins = LittleLong(pinskingroup->numskins);
 415                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 416                 }
 417
 418                 for (j = 0;j < groupskins;j++)
 419                 {
 420                         datapointer += skinwidth * skinheight;
 421                         totalskins++;
 422                 }
 423         }
 424
 425         pinstverts = (stvert_t *)datapointer;
 426         datapointer += sizeof(stvert_t) * numverts;
 427
 428         pintriangles = (dtriangle_t *)datapointer;
 429         datapointer += sizeof(dtriangle_t) * loadmodel->numtris;
 430
 431         startframes = datapointer;
 432         totalposes = 0;
 433         for (i = 0;i < loadmodel->numframes;i++)
 434         {
 435                 pinframetype = (daliasframetype_t *)datapointer;
 436                 datapointer += sizeof(daliasframetype_t);
 437                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 438                         groupframes = 1;
 439                 else
 440                 {
 441                         pinframegroup = (daliasgroup_t *)datapointer;
 442                         datapointer += sizeof(daliasgroup_t);
 443                         groupframes = LittleLong(pinframegroup->numframes);
 444                         datapointer += sizeof(daliasinterval_t) * groupframes;
 445                 }
 446
 447                 for (j = 0;j < groupframes;j++)
 448                 {
 449                         datapointer += sizeof(daliasframe_t);
 450                         datapointer += sizeof(trivertx_t) * numverts;
 451                         totalposes++;
 452                 }
 453         }
 454
 455         // load the skins
 456         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 457         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 458         totalskins = 0;
 459         datapointer = startskins;
 460         for (i = 0;i < loadmodel->numskins;i++)
 461         {
 462                 pinskintype = (daliasskintype_t *)datapointer;
 463                 datapointer += sizeof(daliasskintype_t);
 464
 465                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 466                 {
 467                         groupskins = 1;
 468                         interval = 0.1f;
 469                 }
 470                 else
 471                 {
 472                         pinskingroup = (daliasskingroup_t *)datapointer;
 473                         datapointer += sizeof(daliasskingroup_t);
 474
 475                         groupskins = LittleLong (pinskingroup->numskins);
 476
 477                         pinskinintervals = (daliasskininterval_t *)datapointer;
 478                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 479
 480                         interval = LittleFloat(pinskinintervals[0].interval);
 481                         if (interval < 0.01f)
 482                                 Host_Error("Mod_LoadAliasModel: invalid interval\n");
 483                 }
 484
 485                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 486                 loadmodel->skinscenes[i].firstframe = totalskins;
 487                 loadmodel->skinscenes[i].framecount = groupskins;
 488                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 489                 loadmodel->skinscenes[i].loop = true;
 490
 491                 for (j = 0;j < groupskins;j++)
 492                 {
 493                         if (groupskins > 1)
 494                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 495                         else
 496                                 sprintf (name, "%s_%i", loadmodel->name, i);
 497                         if (!Mod_LoadExternalSkin(name, loadmodel->skinframes + totalskins, i == 0))
 498                                 Mod_LoadInternalSkin(name, (qbyte *)datapointer, skinwidth, skinheight, loadmodel->skinframes + totalskins, i == 0);
 499                         datapointer += skinwidth * skinheight;
 500                         totalskins++;
 501                 }
 502         }
 503         // check for skins that don't exist in the model, but do exist as external images
 504         // (this was added because yummyluv kept pestering me about support for it)
 505         for (;;)
 506         {
 507                 sprintf (name, "%s_%i", loadmodel->name, loadmodel->numskins);
 508                 if (Mod_LoadExternalSkin(name, &tempskinframe, loadmodel->numskins == 0))
 509                 {
 510                         // expand the arrays to make room
 511                         tempskinscenes = loadmodel->skinscenes;
 512                         tempskinframes = loadmodel->skinframes;
 513                         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 514                         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, (totalskins + 1) * sizeof(skinframe_t));
 515                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 516                         memcpy(loadmodel->skinframes, tempskinframes, totalskins * sizeof(skinframe_t));
 517                         Mem_Free(tempskinscenes);
 518                         Mem_Free(tempskinframes);
 519                         // store the info about the new skin
 520                         strcpy(loadmodel->skinscenes[loadmodel->numskins].name, name);
 521                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 522                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 523                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 524                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 525                         loadmodel->skinframes[totalskins] = tempskinframe;
 526                         loadmodel->numskins++;
 527                         totalskins++;
 528                 }
 529                 else
 530                         break;
 531         }
 532
 533         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 534         scales = 1.0 / skinwidth;
 535         scalet = 1.0 / skinheight;
 536         for (i = 0;i < numverts;i++)
 537         {
 538                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 539                 vertst[i][0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 540                 vertst[i][1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 541                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 542                 vertst[i+numverts][1] = vertst[i][1];
 543                 vertusage[i] = 0;
 544                 vertusage[i+numverts] = 0;
 545         }
 546
 547 // load triangle data
 548         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->numtris);
 549
 550         // count the vertices used
 551         for (i = 0;i < numverts*2;i++)
 552                 vertusage[i] = 0;
 553         for (i = 0;i < loadmodel->numtris;i++)
 554         {
 555                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 556                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 557                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 558                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 559                 {
 560                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 561                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 562                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 563                 }
 564                 vertusage[temptris[i][0]]++;
 565                 vertusage[temptris[i][1]]++;
 566                 vertusage[temptris[i][2]]++;
 567         }
 568         // build remapping table and compact array
 569         totalverts = 0;
 570         for (i = 0;i < numverts*2;i++)
 571         {
 572                 if (vertusage[i])
 573                 {
 574                         vertremap[i] = totalverts;
 575                         vertst[totalverts][0] = vertst[i][0];
 576                         vertst[totalverts][1] = vertst[i][1];
 577                         totalverts++;
 578                 }
 579                 else
 580                         vertremap[i] = -1; // not used at all
 581         }
 582         loadmodel->numverts = totalverts;
 583         // remap the triangle references
 584         for (i = 0;i < loadmodel->numtris;i++)
 585         {
 586                 loadmodel->mdlmd2data_indices[i*3+0] = vertremap[temptris[i][0]];
 587                 loadmodel->mdlmd2data_indices[i*3+1] = vertremap[temptris[i][1]];
 588                 loadmodel->mdlmd2data_indices[i*3+2] = vertremap[temptris[i][2]];
 589         }
 590         // store the texture coordinates
 591         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[4]) * totalverts);
 592         for (i = 0;i < totalverts;i++)
 593         {
 594                 loadmodel->mdlmd2data_texcoords[i*4+0] = vertst[i][0];
 595                 loadmodel->mdlmd2data_texcoords[i*4+1] = vertst[i][1];
 596         }
 597
 598 // load the frames
 599         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 600         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, sizeof(aliasvertex_t) * totalposes * totalverts);
 601
 602         // LordHavoc: doing proper bbox for model
 603         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 604         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 605
 606         Mod_MDL_LoadFrames (startframes, numverts, scale, translate);
 607
 608         modelyawradius = sqrt(modelyawradius);
 609         modelradius = sqrt(modelradius);
 610         for (j = 0;j < 3;j++)
 611         {
 612                 loadmodel->normalmins[j] = aliasbboxmin[j];
 613                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 614                 loadmodel->rotatedmins[j] = -modelradius;
 615                 loadmodel->rotatedmaxs[j] = modelradius;
 616         }
 617         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 618         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 619         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 620         loadmodel->radius = modelradius;
 621         loadmodel->radius2 = modelradius * modelradius;
 622
 623         Mod_BuildMDLMD2MeshInfo();
 624 }
 625
 626 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int *vertremap)
 627 {
 628         int i;
 629         float dist;
 630         trivertx_t *in;
 631         vec3_t temp;
 632         for (i = 0;i < loadmodel->numverts;i++)
 633         {
 634                 in = v + vertremap[i];
 635                 temp[0] = in->v[0] * scale[0] + translate[0];
 636                 temp[1] = in->v[1] * scale[1] + translate[1];
 637                 temp[2] = in->v[2] * scale[2] + translate[2];
 638                 // update bounding box
 639                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
 640                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
 641                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
 642                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
 643                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
 644                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
 645                 dist = temp[0]*temp[0]+temp[1]*temp[1];
 646                 if (modelyawradius < dist)
 647                         modelyawradius = dist;
 648                 dist += temp[2]*temp[2];
 649                 if (modelradius < dist)
 650                         modelradius = dist;
 651                 VectorCopy(temp, out[i].origin);
 652         }
 653 }
 654
 655 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 656 {
 657         int *vertremap;
 658         md2_t *pinmodel;
 659         qbyte *base;
 660         int version, end;
 661         int i, j, k, hashindex, num, numxyz, numst, xyz, st;
 662         float *stverts, s, t, scale[3], translate[3];
 663         struct md2verthash_s
 664         {
 665                 struct md2verthash_s *next;
 666                 int xyz;
 667                 float st[2];
 668         }
 669         *hash, **md2verthash, *md2verthashdata;
 670         qbyte *datapointer;
 671         md2frame_t *pinframe;
 672         char *inskin;
 673         md2triangle_t *intri;
 674         unsigned short *inst;
 675         int skinwidth, skinheight;
 676         float *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 677
 678         pinmodel = buffer;
 679         base = buffer;
 680
 681         version = LittleLong (pinmodel->version);
 682         if (version != MD2ALIAS_VERSION)
 683                 Host_Error ("%s has wrong version number (%i should be %i)",
 684                         loadmodel->name, version, MD2ALIAS_VERSION);
 685
 686         loadmodel->type = mod_alias;
 687         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 688         loadmodel->DrawSky = NULL;
 689         loadmodel->Draw = R_Model_Alias_Draw;
 690         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 691         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 692         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 693
 694         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 695                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 696         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 697                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 698         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 699                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 700         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 701                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 702
 703         end = LittleLong(pinmodel->ofs_end);
 704         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 705                 Host_Error ("%s is not a valid model", loadmodel->name);
 706         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 707                 Host_Error ("%s is not a valid model", loadmodel->name);
 708         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 709                 Host_Error ("%s is not a valid model", loadmodel->name);
 710         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 711                 Host_Error ("%s is not a valid model", loadmodel->name);
 712         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 713                 Host_Error ("%s is not a valid model", loadmodel->name);
 714
 715         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 716         numxyz = LittleLong(pinmodel->num_xyz);
 717         numst = LittleLong(pinmodel->num_st);
 718         loadmodel->numtris = LittleLong(pinmodel->num_tris);
 719         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 720
 721         loadmodel->flags = 0; // there are no MD2 flags
 722         loadmodel->synctype = ST_RAND;
 723
 724         // load the skins
 725         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 726         if (loadmodel->numskins)
 727         {
 728                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins + sizeof(skinframe_t) * loadmodel->numskins);
 729                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + loadmodel->numskins);
 730                 for (i = 0;i < loadmodel->numskins;i++)
 731                 {
 732                         loadmodel->skinscenes[i].firstframe = i;
 733                         loadmodel->skinscenes[i].framecount = 1;
 734                         loadmodel->skinscenes[i].loop = true;
 735                         loadmodel->skinscenes[i].framerate = 10;
 736                         loadmodel->skinframes[i].base = loadtextureimagewithmaskandnmap (loadmodel->texturepool, inskin, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 737                         loadmodel->skinframes[i].fog = image_masktex;
 738                         loadmodel->skinframes[i].nmap = image_nmaptex;
 739                         loadmodel->skinframes[i].gloss = NULL;
 740                         loadmodel->skinframes[i].pants = NULL;
 741                         loadmodel->skinframes[i].shirt = NULL;
 742                         loadmodel->skinframes[i].glow = NULL;
 743                         loadmodel->skinframes[i].merged = NULL;
 744                         inskin += MD2MAX_SKINNAME;
 745                 }
 746         }
 747
 748         // load the triangles and stvert data
 749         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 750         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 751         skinwidth = LittleLong(pinmodel->skinwidth);
 752         skinheight = LittleLong(pinmodel->skinheight);
 753
 754         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 755         s = 1.0f / skinwidth;
 756         t = 1.0f / skinheight;
 757         for (i = 0;i < numst;i++)
 758         {
 759                 j = (unsigned short) LittleShort(inst[i*2+0]);
 760                 k = (unsigned short) LittleShort(inst[i*2+1]);
 761                 if (j >= skinwidth || k >= skinheight)
 762                 {
 763                         Mem_Free(stverts);
 764                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 765                 }
 766                 stverts[i*2+0] = j * s;
 767                 stverts[i*2+1] = k * t;
 768         }
 769
 770         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 771         md2verthashdata = Mem_Alloc(tempmempool, loadmodel->numtris * 3 * sizeof(*hash));
 772         // swap the triangle list
 773         num = 0;
 774         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 775         for (i = 0;i < loadmodel->numtris;i++)
 776         {
 777                 for (j = 0;j < 3;j++)
 778                 {
 779                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 780                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 781                         if (xyz >= numxyz || st >= numst)
 782                         {
 783                                 Mem_Free(md2verthash);
 784                                 Mem_Free(md2verthashdata);
 785                                 Mem_Free(stverts);
 786                                 if (xyz >= numxyz)
 787                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 788                                 if (st >= numst)
 789                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 790                         }
 791                         s = stverts[st*2+0];
 792                         t = stverts[st*2+1];
 793                         hashindex = (xyz * 17 + st) & 255;
 794                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 795                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 796                                         break;
 797                         if (hash == NULL)
 798                         {
 799                                 hash = md2verthashdata + num++;
 800                                 hash->xyz = xyz;
 801                                 hash->st[0] = s;
 802                                 hash->st[1] = t;
 803                                 hash->next = md2verthash[hashindex];
 804                                 md2verthash[hashindex] = hash;
 805                         }
 806                         loadmodel->mdlmd2data_indices[i*3+j] = (hash - md2verthashdata);
 807                 }
 808         }
 809
 810         Mem_Free(stverts);
 811
 812         loadmodel->numverts = num;
 813         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 814         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[4]));
 815         for (i = 0;i < num;i++)
 816         {
 817                 hash = md2verthashdata + i;
 818                 vertremap[i] = hash->xyz;
 819                 loadmodel->mdlmd2data_texcoords[i*4+0] = hash->st[0];
 820                 loadmodel->mdlmd2data_texcoords[i*4+1] = hash->st[1];
 821         }
 822
 823         Mem_Free(md2verthash);
 824         Mem_Free(md2verthashdata);
 825
 826         // load frames
 827         // LordHavoc: doing proper bbox for model
 828         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 829         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 830         modelyawradius = 0;
 831         modelradius = 0;
 832
 833         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 834         // load the frames
 835         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 836         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, loadmodel->numverts * loadmodel->numframes * sizeof(trivertx_t));
 837
 838         vertexbuffer = Mem_Alloc(tempmempool, loadmodel->numverts * sizeof(float[4]) * 4);
 839         svectorsbuffer = vertexbuffer + loadmodel->numverts * 4;
 840         tvectorsbuffer = svectorsbuffer + loadmodel->numverts * 4;
 841         normalsbuffer = tvectorsbuffer + loadmodel->numverts * 4;
 842         for (i = 0;i < loadmodel->numframes;i++)
 843         {
 844                 pinframe = (md2frame_t *)datapointer;
 845                 datapointer += sizeof(md2frame_t);
 846                 for (j = 0;j < 3;j++)
 847                 {
 848                         scale[j] = LittleFloat(pinframe->scale[j]);
 849                         translate[j] = LittleFloat(pinframe->translate[j]);
 850                 }
 851                 Mod_MD2_ConvertVerts(scale, translate, (void *)datapointer, loadmodel->mdlmd2data_pose + i * loadmodel->numverts, vertremap);
 852                 Mod_BuildAliasVertexTextureVectors(loadmodel->numtris, loadmodel->mdlmd2data_indices, loadmodel->numverts, loadmodel->mdlmd2data_pose + i * loadmodel->numverts, loadmodel->mdlmd2data_texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 853                 datapointer += numxyz * sizeof(trivertx_t);
 854
 855                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 856                 loadmodel->animscenes[i].firstframe = i;
 857                 loadmodel->animscenes[i].framecount = 1;
 858                 loadmodel->animscenes[i].framerate = 10;
 859                 loadmodel->animscenes[i].loop = true;
 860         }
 861         Mem_Free(vertexbuffer);
 862
 863         Mem_Free(vertremap);
 864
 865         // LordHavoc: model bbox
 866         modelyawradius = sqrt(modelyawradius);
 867         modelradius = sqrt(modelradius);
 868         for (j = 0;j < 3;j++)
 869         {
 870                 loadmodel->normalmins[j] = aliasbboxmin[j];
 871                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 872                 loadmodel->rotatedmins[j] = -modelradius;
 873                 loadmodel->rotatedmaxs[j] = modelradius;
 874         }
 875         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 876         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 877         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 878         loadmodel->radius = modelradius;
 879         loadmodel->radius2 = modelradius * modelradius;
 880
 881         Mod_BuildMDLMD2MeshInfo();
 882 }
 883
 884 extern void R_Model_Zymotic_DrawSky(entity_render_t *ent);
 885 extern void R_Model_Zymotic_Draw(entity_render_t *ent);
 886 extern void R_Model_Zymotic_DrawFakeShadow(entity_render_t *ent);
 887 extern void R_Model_Zymotic_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 888 extern void R_Model_Zymotic_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 889 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 890 {
 891         zymtype1header_t *pinmodel, *pheader;
 892         qbyte *pbase;
 893
 894         pinmodel = (void *)buffer;
 895         pbase = buffer;
 896         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 897                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 898         if (BigLong(pinmodel->type) != 1)
 899                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 900
 901         loadmodel->type = mod_alias;
 902         loadmodel->aliastype = ALIASTYPE_ZYM;
 903         loadmodel->DrawSky = NULL;
 904         loadmodel->Draw = R_Model_Zymotic_Draw;
 905         loadmodel->DrawFakeShadow = NULL;//R_Model_Zymotic_DrawFakeShadow;
 906         loadmodel->DrawShadowVolume = NULL;//R_Model_Zymotic_DrawShadowVolume;
 907         loadmodel->DrawLight = NULL;//R_Model_Zymotic_DrawLight;
 908
 909         // byteswap header
 910         pheader = pinmodel;
 911         pheader->type = BigLong(pinmodel->type);
 912         pheader->filesize = BigLong(pinmodel->filesize);
 913         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
 914         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
 915         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
 916         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
 917         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
 918         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
 919         pheader->radius = BigFloat(pinmodel->radius);
 920         pheader->numverts = loadmodel->zymnum_verts = BigLong(pinmodel->numverts);
 921         pheader->numtris = loadmodel->zymnum_tris = BigLong(pinmodel->numtris);
 922         pheader->numshaders = loadmodel->zymnum_shaders = BigLong(pinmodel->numshaders);
 923         pheader->numbones = loadmodel->zymnum_bones = BigLong(pinmodel->numbones);
 924         pheader->numscenes = loadmodel->zymnum_scenes = BigLong(pinmodel->numscenes);
 925         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
 926         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
 927         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
 928         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
 929         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
 930         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
 931         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
 932         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
 933         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
 934         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
 935         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
 936         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
 937         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
 938         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
 939         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
 940         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
 941         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
 942         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
 943
 944         loadmodel->flags = 0; // there are no flags
 945         loadmodel->numframes = pheader->numscenes;
 946         loadmodel->synctype = ST_SYNC;
 947         loadmodel->numtris = pheader->numtris;
 948         loadmodel->numverts = 0;
 949
 950         {
 951                 unsigned int i;
 952                 float modelradius, corner[2];
 953                 // model bbox
 954                 modelradius = pheader->radius;
 955                 for (i = 0;i < 3;i++)
 956                 {
 957                         loadmodel->normalmins[i] = pheader->mins[i];
 958                         loadmodel->normalmaxs[i] = pheader->maxs[i];
 959                         loadmodel->rotatedmins[i] = -modelradius;
 960                         loadmodel->rotatedmaxs[i] = modelradius;
 961                 }
 962                 corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 963                 corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 964                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 965                 if (loadmodel->yawmaxs[0] > modelradius)
 966                         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 967                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 968                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
 969                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 970                 loadmodel->radius = modelradius;
 971                 loadmodel->radius2 = modelradius * modelradius;
 972         }
 973
 974         {
 975                 // FIXME: add shaders, and make them switchable shader sets and...
 976                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 977                 loadmodel->skinscenes[0].firstframe = 0;
 978                 loadmodel->skinscenes[0].framecount = 1;
 979                 loadmodel->skinscenes[0].loop = true;
 980                 loadmodel->skinscenes[0].framerate = 10;
 981                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 982                 loadmodel->skinframes->base = NULL;
 983                 loadmodel->skinframes->fog = NULL;
 984                 loadmodel->skinframes->pants = NULL;
 985                 loadmodel->skinframes->shirt = NULL;
 986                 loadmodel->skinframes->glow = NULL;
 987                 loadmodel->skinframes->merged = NULL;
 988                 loadmodel->numskins = 1;
 989         }
 990
 991         // go through the lumps, swapping things
 992
 993         {
 994                 int i, numposes;
 995                 zymscene_t *scene;
 996         //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 997                 loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 998                 scene = (void *) (pheader->lump_scenes.start + pbase);
 999                 numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1000                 for (i = 0;i < pheader->numscenes;i++)
1001                 {
1002                         memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1003                         loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1004                         loadmodel->animscenes[i].framecount = BigLong(scene->length);
1005                         loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1006                         loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1007                         if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1008                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
1009                         if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1010                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1011                         if (loadmodel->animscenes[i].framerate < 0)
1012                                 Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
1013                         scene++;
1014                 }
1015         }
1016
1017         {
1018                 int i;
1019                 float *poses;
1020         //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1021                 loadmodel->zymdata_poses = Mem_Alloc(loadmodel->mempool, pheader->lump_poses.length);
1022                 poses = (void *) (pheader->lump_poses.start + pbase);
1023                 for (i = 0;i < pheader->lump_poses.length / 4;i++)
1024                         loadmodel->zymdata_poses[i] = BigFloat(poses[i]);
1025         }
1026
1027         {
1028                 int i;
1029                 zymbone_t *bone;
1030         //      zymlump_t lump_bones; // zymbone_t bone[numbones];
1031                 loadmodel->zymdata_bones = Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(zymbone_t));
1032                 bone = (void *) (pheader->lump_bones.start + pbase);
1033                 for (i = 0;i < pheader->numbones;i++)
1034                 {
1035                         memcpy(loadmodel->zymdata_bones[i].name, bone[i].name, sizeof(bone[i].name));
1036                         loadmodel->zymdata_bones[i].flags = BigLong(bone[i].flags);
1037                         loadmodel->zymdata_bones[i].parent = BigLong(bone[i].parent);
1038                         if (loadmodel->zymdata_bones[i].parent >= i)
1039                                 Host_Error("Mod_LoadZymoticModel: bone[%i].parent >= %i in %s\n", i, i, loadmodel->name);
1040                 }
1041         }
1042
1043         {
1044                 int i, *bonecount;
1045         //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1046                 loadmodel->zymdata_vertbonecounts = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1047                 bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
1048                 for (i = 0;i < pheader->numverts;i++)
1049                 {
1050                         loadmodel->zymdata_vertbonecounts[i] = BigLong(bonecount[i]);
1051                         if (loadmodel->zymdata_vertbonecounts[i] < 1)
1052                                 Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
1053                 }
1054         }
1055
1056         {
1057                 int i;
1058                 zymvertex_t *vertdata;
1059         //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1060                 loadmodel->zymdata_verts = Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1061                 vertdata = (void *) (pheader->lump_verts.start + pbase);
1062                 for (i = 0;i < pheader->lump_verts.length / (int) sizeof(zymvertex_t);i++)
1063                 {
1064                         loadmodel->zymdata_verts[i].bonenum = BigLong(vertdata[i].bonenum);
1065                         loadmodel->zymdata_verts[i].origin[0] = BigFloat(vertdata[i].origin[0]);
1066                         loadmodel->zymdata_verts[i].origin[1] = BigFloat(vertdata[i].origin[1]);
1067                         loadmodel->zymdata_verts[i].origin[2] = BigFloat(vertdata[i].origin[2]);
1068                 }
1069         }
1070
1071         {
1072                 int i;
1073                 float *intexcoord, *outtexcoord;
1074         //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1075                 loadmodel->zymdata_texcoords = outtexcoord = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(float[4]));
1076                 intexcoord = (void *) (pheader->lump_texcoords.start + pbase);
1077                 for (i = 0;i < pheader->numverts;i++)
1078                 {
1079                         outtexcoord[i*4+0] = BigFloat(intexcoord[i*2+0]);
1080                         // flip T coordinate for OpenGL
1081                         outtexcoord[i*4+1] = 1 - BigFloat(intexcoord[i*2+1]);
1082                 }
1083         }
1084
1085         {
1086                 int i, count, *renderlist, *renderlistend, *outrenderlist;
1087         //      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)
1088                 loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, pheader->lump_render.length);
1089                 // byteswap, validate, and swap winding order of tris
1090                 count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1091                 if (pheader->lump_render.length != count)
1092                         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);
1093                 outrenderlist = loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, count);
1094                 renderlist = (void *) (pheader->lump_render.start + pbase);
1095                 renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
1096                 for (i = 0;i < pheader->numshaders;i++)
1097                 {
1098                         if (renderlist >= renderlistend)
1099                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1100                         count = BigLong(*renderlist);renderlist++;
1101                         if (renderlist + count * 3 > renderlistend)
1102                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1103                         *outrenderlist++ = count;
1104                         while (count--)
1105                         {
1106                                 outrenderlist[2] = BigLong(renderlist[0]);
1107                                 outrenderlist[1] = BigLong(renderlist[1]);
1108                                 outrenderlist[0] = BigLong(renderlist[2]);
1109                                 if ((unsigned int)outrenderlist[0] >= (unsigned int)pheader->numverts
1110                                  || (unsigned int)outrenderlist[1] >= (unsigned int)pheader->numverts
1111                                  || (unsigned int)outrenderlist[2] >= (unsigned int)pheader->numverts)
1112                                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
1113                                 renderlist += 3;
1114                                 outrenderlist += 3;
1115                         }
1116                 }
1117         }
1118
1119         {
1120                 int i;
1121                 char *shadername;
1122         //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1123                 loadmodel->zymdata_textures = Mem_Alloc(loadmodel->mempool, pheader->numshaders * sizeof(rtexture_t *));
1124                 shadername = (void *) (pheader->lump_shaders.start + pbase);
1125                 for (i = 0;i < pheader->numshaders;i++)
1126                         loadmodel->zymdata_textures[i] = loadtextureimage(loadmodel->texturepool, shadername + i * 32, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0));
1127         }
1128
1129         {
1130         //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1131                 loadmodel->zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1132                 memcpy(loadmodel->zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1133         }
1134 }