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
  23 static cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0"};
  24
  25 void Mod_AliasInit (void)
  26 {
  27         Cvar_RegisterVariable(&r_mipskins);
  28 }
  29
  30 // LordHavoc: proper bounding box considerations
  31 static float aliasbboxmin[3], aliasbboxmax[3], modelyawradius, modelradius;
  32
  33 static float vertst[MAXALIASVERTS][2];
  34 static int vertusage[MAXALIASVERTS];
  35 static int vertonseam[MAXALIASVERTS];
  36 static int vertremap[MAXALIASVERTS];
  37 static int temptris[MAXALIASTRIS][3];
  38
  39 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivertx_t *out)
  40 {
  41         int i, j, invalidnormals = 0;
  42         float dist;
  43         vec3_t temp;
  44         for (i = 0;i < inverts;i++)
  45         {
  46                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  47                         continue;
  48
  49                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  50                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  51                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  52                 // update bounding box
  53                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
  54                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
  55                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
  56                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
  57                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
  58                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
  59                 dist = temp[0]*temp[0]+temp[1]*temp[1];
  60                 if (modelyawradius < dist)
  61                         modelyawradius = dist;
  62                 dist += temp[2]*temp[2];
  63                 if (modelradius < dist)
  64                         modelradius = dist;
  65
  66                 j = vertremap[i]; // not onseam
  67                 if (j >= 0)
  68                 {
  69                         VectorCopy(v[i].v, out[j].v);
  70                         out[j].lightnormalindex = v[i].lightnormalindex;
  71                         if (out[j].lightnormalindex >= NUMVERTEXNORMALS)
  72                         {
  73                                 invalidnormals++;
  74                                 out[j].lightnormalindex = 0;
  75                         }
  76                 }
  77                 j = vertremap[i+inverts]; // onseam
  78                 if (j >= 0)
  79                 {
  80                         VectorCopy(v[i].v, out[j].v);
  81                         out[j].lightnormalindex = v[i].lightnormalindex;
  82                         if (out[j].lightnormalindex >= NUMVERTEXNORMALS)
  83                         {
  84                                 invalidnormals++;
  85                                 out[j].lightnormalindex = 0;
  86                         }
  87                 }
  88         }
  89         if (invalidnormals)
  90                 Con_Printf("Mod_ConvertAliasVerts: \"%s\", %i invalid normal indices found\n", loadmodel->name, invalidnormals);
  91 }
  92
  93 static void Mod_MDL_LoadFrames (qbyte * datapointer, int inverts, int outverts, vec3_t scale, vec3_t translate)
  94 {
  95         daliasframetype_t       *pframetype;
  96         daliasframe_t           *pinframe;
  97         daliasgroup_t           *group;
  98         daliasinterval_t        *intervals;
  99         int                                     i, f, pose, groupframes;
 100         float                           interval;
 101         animscene_t                     *scene;
 102         pose = 0;
 103         scene = loadmodel->animscenes;
 104         for (f = 0;f < loadmodel->numframes;f++)
 105         {
 106                 pframetype = (daliasframetype_t *)datapointer;
 107                 datapointer += sizeof(daliasframetype_t);
 108                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 109                 {
 110                         // a single frame is still treated as a group
 111                         interval = 0.1f;
 112                         groupframes = 1;
 113                 }
 114                 else
 115                 {
 116                         // read group header
 117                         group = (daliasgroup_t *)datapointer;
 118                         datapointer += sizeof(daliasgroup_t);
 119                         groupframes = LittleLong (group->numframes);
 120
 121                         // intervals (time per frame)
 122                         intervals = (daliasinterval_t *)datapointer;
 123                         datapointer += sizeof(daliasinterval_t) * groupframes;
 124
 125                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 126                         if (interval < 0.01f)
 127                                 Host_Error("Mod_LoadAliasGroup: invalid interval");
 128                 }
 129
 130                 // get scene name from first frame
 131                 pinframe = (daliasframe_t *)datapointer;
 132
 133                 strcpy(scene->name, pinframe->name);
 134                 scene->firstframe = pose;
 135                 scene->framecount = groupframes;
 136                 scene->framerate = 1.0f / interval;
 137                 scene->loop = true;
 138                 scene++;
 139
 140                 // read frames
 141                 for (i = 0;i < groupframes;i++)
 142                 {
 143                         pinframe = (daliasframe_t *)datapointer;
 144                         datapointer += sizeof(daliasframe_t);
 145
 146                         // convert to MD2 frame headers
 147                         strcpy(loadmodel->mdlmd2data_frames[pose].name, pinframe->name);
 148                         VectorCopy(scale, loadmodel->mdlmd2data_frames[pose].scale);
 149                         VectorCopy(translate, loadmodel->mdlmd2data_frames[pose].translate);
 150
 151                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, loadmodel->mdlmd2data_pose + pose * outverts);
 152                         datapointer += sizeof(trivertx_t) * inverts;
 153                         pose++;
 154                 }
 155         }
 156 }
 157
 158 static rtexture_t *GL_SkinSplitShirt(qbyte *in, qbyte *out, int width, int height, int bits, char *name, int precache)
 159 {
 160         int i, pixels, passed;
 161         qbyte pixeltest[16];
 162         for (i = 0;i < 16;i++)
 163                 pixeltest[i] = (bits & (1 << i)) != 0;
 164         pixels = width*height;
 165         passed = 0;
 166         while(pixels--)
 167         {
 168                 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
 169                 {
 170                         passed++;
 171                         // turn to white while copying
 172                         if (*in >= 128 && *in < 224) // backwards ranges
 173                                 *out = (*in & 15) ^ 15;
 174                         else
 175                                 *out = *in & 15;
 176                 }
 177                 else
 178                         *out = 0;
 179                 in++;
 180                 out++;
 181         }
 182         if (passed)
 183                 return R_LoadTexture (loadmodel->texturepool, name, width, height, out - width*height, TEXTYPE_QPALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0));
 184         else
 185                 return NULL;
 186 }
 187
 188 static rtexture_t *GL_SkinSplit(qbyte *in, qbyte *out, int width, int height, int bits, char *name, int precache)
 189 {
 190         int i, pixels, passed;
 191         qbyte pixeltest[16];
 192         for (i = 0;i < 16;i++)
 193                 pixeltest[i] = (bits & (1 << i)) != 0;
 194         pixels = width*height;
 195         passed = 0;
 196         while(pixels--)
 197         {
 198                 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
 199                 {
 200                         passed++;
 201                         *out = *in;
 202                 }
 203                 else
 204                         *out = 0;
 205                 in++;
 206                 out++;
 207         }
 208         if (passed)
 209                 return R_LoadTexture (loadmodel->texturepool, name, width, height, out - width*height, TEXTYPE_QPALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0));
 210         else
 211                 return NULL;
 212 }
 213
 214 static void Mod_LoadSkin (char *basename, qbyte *skindata, qbyte *skintemp, int width, int height, skinframe_t *skinframe, int precache)
 215 {
 216         skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, va("%s_normal", basename), 0, 0, false, r_mipskins.integer, precache);
 217         skinframe->fog    = image_masktex;
 218         skinframe->pants  = NULL;
 219         skinframe->shirt  = NULL;
 220         skinframe->glow   = loadtextureimage(loadmodel->texturepool, va("%s_glow"  , basename), 0, 0, false, r_mipskins.integer, precache);
 221         skinframe->merged = NULL;
 222         if (skinframe->base)
 223         {
 224                 skinframe->pants  = loadtextureimage(loadmodel->texturepool, va("%s_pants" , basename), 0, 0, false, r_mipskins.integer, precache);
 225                 skinframe->shirt  = loadtextureimage(loadmodel->texturepool, va("%s_shirt" , basename), 0, 0, false, r_mipskins.integer, precache);
 226         }
 227         else
 228         {
 229                 skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, basename, 0, 0, false, true, true);
 230                 skinframe->fog    = image_masktex;
 231                 if (!skinframe->base)
 232                 {
 233                         skinframe->pants  = GL_SkinSplitShirt(skindata, skintemp, width, height, 0x0040, va("%s_pants", basename), false); // pants
 234                         skinframe->shirt  = GL_SkinSplitShirt(skindata, skintemp, width, height, 0x0002, va("%s_shirt", basename), false); // shirt
 235                         skinframe->glow   = GL_SkinSplit     (skindata, skintemp, width, height, 0xC000, va("%s_glow", basename), precache); // glow
 236                         if (skinframe->pants || skinframe->shirt)
 237                         {
 238                                 skinframe->base   = GL_SkinSplit (skindata, skintemp, width, height, 0x3FBD, va("%s_normal", basename), false); // normal (no special colors)
 239                                 skinframe->merged = GL_SkinSplit (skindata, skintemp, width, height, 0x3FFF, va("%s_body", basename), precache); // body (normal + pants + shirt, but not glow)
 240                         }
 241                         else
 242                                 skinframe->base   = GL_SkinSplit (skindata, skintemp, width, height, 0x3FFF, va("%s_base", basename), precache); // no special colors
 243                         // quake model skins don't have alpha
 244                         skinframe->fog = NULL;
 245                 }
 246         }
 247 }
 248
 249 #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);
 250 #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);
 251 void Mod_LoadAliasModel (model_t *mod, void *buffer)
 252 {
 253         int                                             i, j, version, numverts, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins;
 254         mdl_t                                   *pinmodel;
 255         stvert_t                                *pinstverts;
 256         dtriangle_t                             *pintriangles;
 257         daliasskintype_t                *pinskintype;
 258         daliasskingroup_t               *pinskingroup;
 259         daliasskininterval_t    *pinskinintervals;
 260         daliasframetype_t               *pinframetype;
 261         daliasgroup_t                   *pinframegroup;
 262         float                                   scales, scalet, scale[3], translate[3], interval;
 263         qbyte                                   *datapointer, *startframes, *startskins;
 264         char                                    name[MAX_QPATH];
 265         qbyte                                   *skintemp = NULL;
 266         modelyawradius = 0;
 267         modelradius = 0;
 268
 269         datapointer = buffer;
 270         pinmodel = (mdl_t *)datapointer;
 271         datapointer += sizeof(mdl_t);
 272
 273         version = LittleLong (pinmodel->version);
 274         if (version != ALIAS_VERSION)
 275                 Host_Error ("%s has wrong version number (%i should be %i)",
 276                                  loadmodel->name, version, ALIAS_VERSION);
 277
 278         loadmodel->type = mod_alias;
 279         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 280
 281         loadmodel->numskins = LittleLong(pinmodel->numskins);
 282         BOUNDI(loadmodel->numskins,0,256);
 283         skinwidth = LittleLong (pinmodel->skinwidth);
 284         BOUNDI(skinwidth,0,4096);
 285         skinheight = LittleLong (pinmodel->skinheight);
 286         BOUNDI(skinheight,0,4096);
 287         loadmodel->numverts = numverts = LittleLong(pinmodel->numverts);
 288         BOUNDI(loadmodel->numverts,0,MAXALIASVERTS);
 289         loadmodel->numtris = LittleLong(pinmodel->numtris);
 290         BOUNDI(loadmodel->numtris,0,MAXALIASTRIS);
 291         loadmodel->numframes = LittleLong(pinmodel->numframes);
 292         BOUNDI(loadmodel->numframes,0,65536);
 293         loadmodel->synctype = LittleLong (pinmodel->synctype);
 294         BOUNDI(loadmodel->synctype,0,2);
 295         loadmodel->flags = LittleLong (pinmodel->flags);
 296
 297         for (i = 0;i < 3;i++)
 298         {
 299                 scale[i] = LittleFloat (pinmodel->scale[i]);
 300                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 301         }
 302
 303         startskins = datapointer;
 304         totalskins = 0;
 305         for (i = 0;i < loadmodel->numskins;i++)
 306         {
 307                 pinskintype = (daliasskintype_t *)datapointer;
 308                 datapointer += sizeof(daliasskintype_t);
 309                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 310                         groupskins = 1;
 311                 else
 312                 {
 313                         pinskingroup = (daliasskingroup_t *)datapointer;
 314                         datapointer += sizeof(daliasskingroup_t);
 315                         groupskins = LittleLong(pinskingroup->numskins);
 316                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 317                 }
 318
 319                 for (j = 0;j < groupskins;j++)
 320                 {
 321                         datapointer += skinwidth * skinheight;
 322                         totalskins++;
 323                 }
 324         }
 325
 326         pinstverts = (stvert_t *)datapointer;
 327         datapointer += sizeof(stvert_t) * numverts;
 328
 329         pintriangles = (dtriangle_t *)datapointer;
 330         datapointer += sizeof(dtriangle_t) * loadmodel->numtris;
 331
 332         startframes = datapointer;
 333         totalposes = 0;
 334         for (i = 0;i < loadmodel->numframes;i++)
 335         {
 336                 pinframetype = (daliasframetype_t *)datapointer;
 337                 datapointer += sizeof(daliasframetype_t);
 338                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 339                         groupframes = 1;
 340                 else
 341                 {
 342                         pinframegroup = (daliasgroup_t *)datapointer;
 343                         datapointer += sizeof(daliasgroup_t);
 344                         groupframes = LittleLong(pinframegroup->numframes);
 345                         datapointer += sizeof(daliasinterval_t) * groupframes;
 346                 }
 347
 348                 for (j = 0;j < groupframes;j++)
 349                 {
 350                         datapointer += sizeof(daliasframe_t);
 351                         datapointer += sizeof(trivertx_t) * numverts;
 352                         totalposes++;
 353                 }
 354         }
 355
 356         // load the skins
 357         skintemp = Mem_Alloc(tempmempool, skinwidth * skinheight);
 358         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 359         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 360         totalskins = 0;
 361         datapointer = startskins;
 362         for (i = 0;i < loadmodel->numskins;i++)
 363         {
 364                 pinskintype = (daliasskintype_t *)datapointer;
 365                 datapointer += sizeof(daliasskintype_t);
 366
 367                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 368                 {
 369                         groupskins = 1;
 370                         interval = 0.1f;
 371                 }
 372                 else
 373                 {
 374                         pinskingroup = (daliasskingroup_t *)datapointer;
 375                         datapointer += sizeof(daliasskingroup_t);
 376
 377                         groupskins = LittleLong (pinskingroup->numskins);
 378
 379                         pinskinintervals = (daliasskininterval_t *)datapointer;
 380                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 381
 382                         interval = LittleFloat(pinskinintervals[0].interval);
 383                         if (interval < 0.01f)
 384                                 Host_Error("Mod_LoadAliasModel: invalid interval\n");
 385                 }
 386
 387                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 388                 loadmodel->skinscenes[i].firstframe = totalskins;
 389                 loadmodel->skinscenes[i].framecount = groupskins;
 390                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 391                 loadmodel->skinscenes[i].loop = true;
 392
 393                 for (j = 0;j < groupskins;j++)
 394                 {
 395                         if (groupskins > 1)
 396                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 397                         else
 398                                 sprintf (name, "%s_%i", loadmodel->name, i);
 399                         Mod_LoadSkin(name, (qbyte *)datapointer, skintemp, skinwidth, skinheight, loadmodel->skinframes + totalskins, i == 0);
 400                         datapointer += skinwidth * skinheight;
 401                         totalskins++;
 402                 }
 403         }
 404         Mem_Free(skintemp);
 405
 406         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 407         scales = 1.0 / skinwidth;
 408         scalet = 1.0 / skinheight;
 409         for (i = 0;i < numverts;i++)
 410         {
 411                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 412                 vertst[i][0] = LittleLong(pinstverts[i].s) * scales;
 413                 vertst[i][1] = LittleLong(pinstverts[i].t) * scalet;
 414                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 415                 vertst[i+numverts][1] = vertst[i][1];
 416                 vertusage[i] = 0;
 417                 vertusage[i+numverts] = 0;
 418         }
 419
 420 // load triangle data
 421         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->numtris);
 422
 423         // count the vertices used
 424         for (i = 0;i < numverts*2;i++)
 425                 vertusage[i] = 0;
 426         for (i = 0;i < loadmodel->numtris;i++)
 427         {
 428                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 429                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 430                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 431                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 432                 {
 433                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 434                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 435                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 436                 }
 437                 vertusage[temptris[i][0]]++;
 438                 vertusage[temptris[i][1]]++;
 439                 vertusage[temptris[i][2]]++;
 440         }
 441         // build remapping table and compact array
 442         totalverts = 0;
 443         for (i = 0;i < numverts*2;i++)
 444         {
 445                 if (vertusage[i])
 446                 {
 447                         vertremap[i] = totalverts;
 448                         vertst[totalverts][0] = vertst[i][0];
 449                         vertst[totalverts][1] = vertst[i][1];
 450                         totalverts++;
 451                 }
 452                 else
 453                         vertremap[i] = -1; // not used at all
 454         }
 455         loadmodel->numverts = totalverts;
 456         // remap the triangle references
 457         for (i = 0;i < loadmodel->numtris;i++)
 458         {
 459                 loadmodel->mdlmd2data_indices[i*3+0] = vertremap[temptris[i][0]];
 460                 loadmodel->mdlmd2data_indices[i*3+1] = vertremap[temptris[i][1]];
 461                 loadmodel->mdlmd2data_indices[i*3+2] = vertremap[temptris[i][2]];
 462         }
 463         // store the texture coordinates
 464         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * totalverts);
 465         for (i = 0;i < totalverts;i++)
 466         {
 467                 loadmodel->mdlmd2data_texcoords[i*2+0] = vertst[i][0];
 468                 loadmodel->mdlmd2data_texcoords[i*2+1] = vertst[i][1];
 469         }
 470
 471 // load the frames
 472         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 473         loadmodel->mdlmd2data_frames = Mem_Alloc(loadmodel->mempool, sizeof(md2frame_t) * totalposes);
 474         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * totalposes * totalverts);
 475
 476         // LordHavoc: doing proper bbox for model
 477         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 478         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 479
 480         Mod_MDL_LoadFrames (startframes, numverts, totalverts, scale, translate);
 481
 482         modelyawradius = sqrt(modelyawradius);
 483         modelradius = sqrt(modelradius);
 484         for (j = 0;j < 3;j++)
 485         {
 486                 loadmodel->normalmins[j] = aliasbboxmin[j];
 487                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 488                 loadmodel->rotatedmins[j] = -modelradius;
 489                 loadmodel->rotatedmaxs[j] = modelradius;
 490         }
 491         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 492         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 493         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 494
 495         loadmodel->Draw = R_DrawAliasModel;
 496         loadmodel->DrawSky = NULL;
 497         loadmodel->DrawShadow = NULL;
 498 }
 499
 500 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, trivertx_t *out, int *vertremap)
 501 {
 502         int i, invalidnormals = 0;
 503         float dist;
 504         trivertx_t *in;
 505         vec3_t temp;
 506         for (i = 0;i < loadmodel->numverts;i++)
 507         {
 508                 in = v + vertremap[i];
 509                 VectorCopy(in->v, out[i].v);
 510                 temp[0] = in->v[0] * scale[0] + translate[0];
 511                 temp[1] = in->v[1] * scale[1] + translate[1];
 512                 temp[2] = in->v[2] * scale[2] + translate[2];
 513                 // update bounding box
 514                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
 515                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
 516                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
 517                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
 518                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
 519                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
 520                 dist = temp[0]*temp[0]+temp[1]*temp[1];
 521                 if (modelyawradius < dist)
 522                         modelyawradius = dist;
 523                 dist += temp[2]*temp[2];
 524                 if (modelradius < dist)
 525                         modelradius = dist;
 526                 out[i].lightnormalindex = in->lightnormalindex;
 527                 if (out[i].lightnormalindex >= NUMVERTEXNORMALS)
 528                 {
 529                         invalidnormals++;
 530                         out[i].lightnormalindex = 0;
 531                 }
 532         }
 533         if (invalidnormals)
 534                 Con_Printf("Mod_MD2_ConvertVerts: \"%s\", %i invalid normal indices found\n", loadmodel->name, invalidnormals);
 535 }
 536
 537 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 538 {
 539         int *vertremap;
 540         md2_t *pinmodel;
 541         qbyte *base;
 542         int version, end;
 543         int i, j, k, hashindex, num, numxyz, numst, xyz, st;
 544         float *stverts, s, t;
 545         struct md2verthash_s
 546         {
 547                 struct md2verthash_s *next;
 548                 int xyz;
 549                 float st[2];
 550         }
 551         *hash, **md2verthash, *md2verthashdata;
 552         qbyte *datapointer;
 553         md2frame_t *pinframe;
 554         char *inskin;
 555         md2triangle_t *intri;
 556         unsigned short *inst;
 557         int skinwidth, skinheight;
 558
 559         pinmodel = buffer;
 560         base = buffer;
 561
 562         version = LittleLong (pinmodel->version);
 563         if (version != MD2ALIAS_VERSION)
 564                 Host_Error ("%s has wrong version number (%i should be %i)",
 565                         loadmodel->name, version, MD2ALIAS_VERSION);
 566
 567         loadmodel->type = mod_alias;
 568         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 569         loadmodel->Draw = R_DrawAliasModel;
 570         loadmodel->DrawSky = NULL;
 571         loadmodel->DrawShadow = NULL;
 572
 573         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 574                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 575         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 576                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 577         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 578                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 579         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 580                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 581
 582         end = LittleLong(pinmodel->ofs_end);
 583         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 584                 Host_Error ("%s is not a valid model", loadmodel->name);
 585         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 586                 Host_Error ("%s is not a valid model", loadmodel->name);
 587         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 588                 Host_Error ("%s is not a valid model", loadmodel->name);
 589         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 590                 Host_Error ("%s is not a valid model", loadmodel->name);
 591         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 592                 Host_Error ("%s is not a valid model", loadmodel->name);
 593
 594         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 595         numxyz = LittleLong(pinmodel->num_xyz);
 596         numst = LittleLong(pinmodel->num_st);
 597         loadmodel->numtris = LittleLong(pinmodel->num_tris);
 598         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 599
 600         loadmodel->flags = 0; // there are no MD2 flags
 601         loadmodel->synctype = ST_RAND;
 602
 603         // load the skins
 604         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 605         if (loadmodel->numskins)
 606         {
 607                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
 608                 loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, sizeof(skinframe_t) * loadmodel->numskins);
 609                 for (i = 0;i < loadmodel->numskins;i++)
 610                 {
 611                         loadmodel->skinscenes[i].firstframe = i;
 612                         loadmodel->skinscenes[i].framecount = 1;
 613                         loadmodel->skinscenes[i].loop = true;
 614                         loadmodel->skinscenes[i].framerate = 10;
 615                         loadmodel->skinframes[i].base = loadtextureimagewithmask (loadmodel->texturepool, inskin, 0, 0, true, r_mipskins.integer, true);
 616                         loadmodel->skinframes[i].fog = image_masktex;
 617                         loadmodel->skinframes[i].pants = NULL;
 618                         loadmodel->skinframes[i].shirt = NULL;
 619                         loadmodel->skinframes[i].glow = NULL;
 620                         loadmodel->skinframes[i].merged = NULL;
 621                         inskin += MD2MAX_SKINNAME;
 622                 }
 623         }
 624
 625         // load the triangles and stvert data
 626         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 627         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 628         skinwidth = LittleLong(pinmodel->skinwidth);
 629         skinheight = LittleLong(pinmodel->skinheight);
 630
 631         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 632         s = 1.0f / skinwidth;
 633         t = 1.0f / skinheight;
 634         for (i = 0;i < numst;i++)
 635         {
 636                 j = (unsigned short) LittleShort(inst[i*2+0]);
 637                 k = (unsigned short) LittleShort(inst[i*2+1]);
 638                 if (j >= skinwidth || k >= skinheight)
 639                 {
 640                         Mem_Free(stverts);
 641                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 642                 }
 643                 stverts[i*2+0] = j * s;
 644                 stverts[i*2+1] = k * t;
 645         }
 646
 647         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 648         md2verthashdata = Mem_Alloc(tempmempool, loadmodel->numtris * 3 * sizeof(*hash));
 649         // swap the triangle list
 650         num = 0;
 651         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 652         for (i = 0;i < loadmodel->numtris;i++)
 653         {
 654                 for (j = 0;j < 3;j++)
 655                 {
 656                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 657                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 658                         if (xyz >= numxyz || st >= numst)
 659                         {
 660                                 Mem_Free(md2verthash);
 661                                 Mem_Free(md2verthashdata);
 662                                 Mem_Free(stverts);
 663                                 if (xyz >= numxyz)
 664                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 665                                 if (st >= numst)
 666                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 667                         }
 668                         s = stverts[st*2+0];
 669                         t = stverts[st*2+1];
 670                         hashindex = (xyz * 17 + st) & 255;
 671                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 672                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 673                                         break;
 674                         if (hash == NULL)
 675                         {
 676                                 hash = md2verthashdata + num++;
 677                                 hash->xyz = xyz;
 678                                 hash->st[0] = s;
 679                                 hash->st[1] = t;
 680                                 hash->next = md2verthash[hashindex];
 681                                 md2verthash[hashindex] = hash;
 682                         }
 683                         loadmodel->mdlmd2data_indices[i*3+j] = (hash - md2verthashdata);
 684                 }
 685         }
 686
 687         Mem_Free(stverts);
 688
 689         loadmodel->numverts = num;
 690         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 691         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[2]));
 692         for (i = 0;i < num;i++)
 693         {
 694                 hash = md2verthashdata + i;
 695                 vertremap[i] = hash->xyz;
 696                 loadmodel->mdlmd2data_texcoords[i*2+0] = hash->st[0];
 697                 loadmodel->mdlmd2data_texcoords[i*2+1] = hash->st[1];
 698         }
 699
 700         Mem_Free(md2verthash);
 701         Mem_Free(md2verthashdata);
 702
 703         // load frames
 704         // LordHavoc: doing proper bbox for model
 705         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 706         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 707         modelyawradius = 0;
 708         modelradius = 0;
 709
 710         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 711         // load the frames
 712         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 713         loadmodel->mdlmd2data_frames = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(md2frame_t));
 714         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, loadmodel->numverts * loadmodel->numframes * sizeof(trivertx_t));
 715
 716         for (i = 0;i < loadmodel->numframes;i++)
 717         {
 718                 pinframe = (md2frame_t *)datapointer;
 719                 datapointer += sizeof(md2frame_t);
 720                 strcpy(loadmodel->mdlmd2data_frames[i].name, pinframe->name);
 721                 for (j = 0;j < 3;j++)
 722                 {
 723                         loadmodel->mdlmd2data_frames[i].scale[j] = LittleFloat(pinframe->scale[j]);
 724                         loadmodel->mdlmd2data_frames[i].translate[j] = LittleFloat(pinframe->translate[j]);
 725                 }
 726                 Mod_MD2_ConvertVerts (loadmodel->mdlmd2data_frames[i].scale, loadmodel->mdlmd2data_frames[i].translate, (void *)datapointer, &loadmodel->mdlmd2data_pose[i * loadmodel->numverts], vertremap);
 727                 datapointer += numxyz * sizeof(trivertx_t);
 728
 729                 strcpy(loadmodel->animscenes[i].name, loadmodel->mdlmd2data_frames[i].name);
 730                 loadmodel->animscenes[i].firstframe = i;
 731                 loadmodel->animscenes[i].framecount = 1;
 732                 loadmodel->animscenes[i].framerate = 10;
 733                 loadmodel->animscenes[i].loop = true;
 734         }
 735
 736         Mem_Free(vertremap);
 737
 738         // LordHavoc: model bbox
 739         modelyawradius = sqrt(modelyawradius);
 740         modelradius = sqrt(modelradius);
 741         for (j = 0;j < 3;j++)
 742         {
 743                 loadmodel->normalmins[j] = aliasbboxmin[j];
 744                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 745                 loadmodel->rotatedmins[j] = -modelradius;
 746                 loadmodel->rotatedmaxs[j] = modelradius;
 747         }
 748         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 749         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 750         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 751 }
 752
 753 static void zymswapintblock(int *m, int size)
 754 {
 755         size /= 4;
 756         while(size--)
 757         {
 758                 *m = BigLong(*m);
 759                 m++;
 760         }
 761 }
 762
 763 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 764 {
 765         int i, pbase, *bonecount, numposes;
 766         unsigned int count, a, b, c, *renderlist, *renderlistend;
 767         rtexture_t **texture;
 768         char *shadername;
 769         zymtype1header_t *pinmodel, *pheader;
 770         zymscene_t *scene;
 771         zymbone_t *bone;
 772         float corner[2], modelradius;
 773
 774         pinmodel = (void *)buffer;
 775
 776         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 777                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 778
 779         if (BigLong(pinmodel->type) != 1)
 780                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 781
 782         loadmodel->type = mod_alias;
 783         loadmodel->aliastype = ALIASTYPE_ZYM;
 784
 785         loadmodel->zymdata_header = pheader = Mem_Alloc(loadmodel->mempool, BigLong(pinmodel->filesize));
 786
 787         pbase = (int) pheader;
 788
 789         memcpy(pheader, pinmodel, BigLong(pinmodel->filesize));
 790
 791         // byteswap header
 792 #define SWAPLONG(var) var = BigLong(var)
 793 #define SWAPFLOAT(var) var = BigFloat(var)
 794 #define SWAPVEC(var) SWAPFLOAT(var[0]);SWAPFLOAT(var[1]);SWAPFLOAT(var[2])
 795         SWAPLONG(pheader->type);
 796         SWAPLONG(pheader->filesize);
 797         SWAPVEC(pheader->mins);
 798         SWAPVEC(pheader->maxs);
 799         SWAPFLOAT(pheader->radius);
 800         SWAPLONG(pheader->numverts);
 801         SWAPLONG(pheader->numtris);
 802         SWAPLONG(pheader->numshaders);
 803         SWAPLONG(pheader->numbones);
 804         SWAPLONG(pheader->numscenes);
 805
 806 #define SWAPLUMPINFO(var) SWAPLONG(pheader->lump_##var.start);SWAPLONG(pheader->lump_##var.length)
 807         SWAPLUMPINFO(scenes);
 808         SWAPLUMPINFO(poses);
 809         SWAPLUMPINFO(bones);
 810         SWAPLUMPINFO(vertbonecounts);
 811         SWAPLUMPINFO(verts);
 812         SWAPLUMPINFO(texcoords);
 813         SWAPLUMPINFO(render);
 814         SWAPLUMPINFO(shaders);
 815         SWAPLUMPINFO(trizone);
 816
 817         loadmodel->flags = 0; // there are no flags
 818         loadmodel->numframes = pheader->numscenes;
 819         loadmodel->synctype = ST_SYNC;
 820         loadmodel->numtris = pheader->numtris;
 821
 822         // FIXME: add skin support and texturing and shaders and...
 823         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 824         loadmodel->skinscenes[0].firstframe = 0;
 825         loadmodel->skinscenes[0].framecount = 1;
 826         loadmodel->skinscenes[0].loop = true;
 827         loadmodel->skinscenes[0].framerate = 10;
 828         loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 829         loadmodel->skinframes->base = NULL;
 830         loadmodel->skinframes->fog = NULL;
 831         loadmodel->skinframes->pants = NULL;
 832         loadmodel->skinframes->shirt = NULL;
 833         loadmodel->skinframes->glow = NULL;
 834         loadmodel->skinframes->merged = NULL;
 835         loadmodel->numskins = 1;
 836         numposes = pheader->lump_poses.length / sizeof(float[3][4]) / pheader->numbones;
 837
 838         // go through the lumps, swapping things
 839
 840 //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 841         scene = (void *) (pheader->lump_scenes.start + pbase);
 842         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 843         for (i = 0;i < pheader->numscenes;i++)
 844         {
 845                 SWAPVEC(scene->mins);
 846                 SWAPVEC(scene->maxs);
 847                 SWAPFLOAT(scene->radius);
 848                 SWAPFLOAT(scene->framerate);
 849                 SWAPLONG(scene->flags);
 850                 SWAPLONG(scene->start);
 851                 SWAPLONG(scene->length);
 852
 853                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
 854                 loadmodel->animscenes[i].firstframe = scene->start;
 855                 loadmodel->animscenes[i].framecount = scene->length;
 856                 loadmodel->animscenes[i].framerate = scene->framerate;
 857                 loadmodel->animscenes[i].loop = (scene->flags & ZYMSCENEFLAG_NOLOOP) == 0;
 858
 859                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= numposes)
 860                         Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
 861                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > numposes)
 862                         Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
 863                 if (loadmodel->animscenes[i].framerate < 0)
 864                         Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
 865                 scene++;
 866         }
 867
 868 //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
 869         zymswapintblock((void *) (pheader->lump_poses.start + pbase), pheader->lump_poses.length);
 870
 871 //      zymlump_t lump_bones; // zymbone_t bone[numbones];
 872         bone = (void *) (pheader->lump_bones.start + pbase);
 873         for (i = 0;i < pheader->numbones;i++)
 874         {
 875                 SWAPLONG(bone[i].flags);
 876                 SWAPLONG(bone[i].parent);
 877                 if (bone[i].parent >= i)
 878                         Host_Error("Mod_LoadZymoticModel: bone[i].parent >= i in %s\n", loadmodel->name);
 879         }
 880
 881 //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
 882         zymswapintblock((void *) (pheader->lump_vertbonecounts.start + pbase), pheader->lump_vertbonecounts.length);
 883         bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
 884         for (i = 0;i < pheader->numbones;i++)
 885                 if (bonecount[i] < 1)
 886                         Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
 887
 888 //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
 889         zymswapintblock((void *) (pheader->lump_verts.start + pbase), pheader->lump_verts.length);
 890
 891 //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
 892         zymswapintblock((void *) (pheader->lump_texcoords.start + pbase), pheader->lump_texcoords.length);
 893
 894 //      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)
 895         zymswapintblock((void *) (pheader->lump_render.start + pbase), pheader->lump_render.length);
 896         // validate renderlist and swap winding order of tris
 897         renderlist = (void *) (pheader->lump_render.start + pbase);
 898         renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
 899         i = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
 900         if (pheader->lump_render.length != i)
 901                 Host_Error("Mod_LoadZymoticModel: renderlist is wrong size in %s (is %i bytes, should be %i bytes)\n", loadmodel->name, pheader->lump_render.length, i);
 902         for (i = 0;i < pheader->numshaders;i++)
 903         {
 904                 if (renderlist >= renderlistend)
 905                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
 906                 count = *renderlist++;
 907                 if (renderlist + count * 3 > renderlistend)
 908                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
 909                 while (count--)
 910                 {
 911                         a = renderlist[0];
 912                         b = renderlist[1];
 913                         c = renderlist[2];
 914                         if (a >= pheader->numverts || b >= pheader->numverts || c >= pheader->numverts)
 915                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
 916                         renderlist[0] = c;
 917                         renderlist[1] = b;
 918                         renderlist[2] = a;
 919                         renderlist += 3;
 920                 }
 921         }
 922
 923 //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
 924         shadername = (void *) (pheader->lump_shaders.start + pbase);
 925         texture = (void *) shadername;
 926         for (i = 0;i < pheader->numshaders;i++)
 927         {
 928                 rtexture_t *rt;
 929                 rt = loadtextureimage(loadmodel->texturepool, shadername, 0, 0, true, r_mipskins.integer, true);
 930                 shadername += 32;
 931                 *texture++ = rt; // reuse shader name list for texture pointers
 932         }
 933
 934 //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
 935         zymswapintblock((void *) (pheader->lump_trizone.start + pbase), pheader->lump_trizone.length);
 936
 937         // model bbox
 938         modelradius = pheader->radius;
 939         for (i = 0;i < 3;i++)
 940         {
 941                 loadmodel->normalmins[i] = pheader->mins[i];
 942                 loadmodel->normalmaxs[i] = pheader->maxs[i];
 943                 loadmodel->rotatedmins[i] = -modelradius;
 944                 loadmodel->rotatedmaxs[i] = modelradius;
 945         }
 946         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 947         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 948         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 949         if (loadmodel->yawmaxs[0] > modelradius)
 950                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 951         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 952         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 953         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 954
 955         loadmodel->Draw = R_DrawAliasModel;
 956         loadmodel->DrawSky = NULL;
 957         loadmodel->DrawShadow = NULL;
 958 }
 959