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 static float vertst[MAXALIASVERTS][2];
  32 static int vertusage[MAXALIASVERTS];
  33 static int vertonseam[MAXALIASVERTS];
  34 static int vertremap[MAXALIASVERTS];
  35 static int temptris[MAXALIASTRIS][3];
  36
  37 static void Mod_CalcAliasModelBBoxes (void)
  38 {
  39         int vnum, meshnum;
  40         float dist, yawradius, radius;
  41         aliasmesh_t *mesh;
  42         aliasvertex_t *v;
  43         VectorClear(loadmodel->normalmins);
  44         VectorClear(loadmodel->normalmaxs);
  45         yawradius = 0;
  46         radius = 0;
  47         for (meshnum = 0, mesh = loadmodel->aliasdata_meshes;meshnum < loadmodel->aliasnum_meshes;meshnum++, mesh++)
  48         {
  49                 for (vnum = 0, v = mesh->data_vertices;vnum < mesh->num_vertices * mesh->num_frames;vnum++, v++)
  50                 {
  51                         if (loadmodel->normalmins[0] > v->origin[0]) loadmodel->normalmins[0] = v->origin[0];
  52                         if (loadmodel->normalmins[1] > v->origin[1]) loadmodel->normalmins[1] = v->origin[1];
  53                         if (loadmodel->normalmins[2] > v->origin[2]) loadmodel->normalmins[2] = v->origin[2];
  54                         if (loadmodel->normalmaxs[0] < v->origin[0]) loadmodel->normalmaxs[0] = v->origin[0];
  55                         if (loadmodel->normalmaxs[1] < v->origin[1]) loadmodel->normalmaxs[1] = v->origin[1];
  56                         if (loadmodel->normalmaxs[2] < v->origin[2]) loadmodel->normalmaxs[2] = v->origin[2];
  57                         dist = v->origin[0] * v->origin[0] + v->origin[1] * v->origin[1];
  58                         if (yawradius < dist)
  59                                 yawradius = dist;
  60                         dist += v->origin[2] * v->origin[2];
  61                         if (radius < dist)
  62                                 radius = dist;
  63                 }
  64         }
  65         radius = sqrt(radius);
  66         yawradius = sqrt(yawradius);
  67         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
  68         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
  69         loadmodel->yawmins[2] = loadmodel->normalmins[2];
  70         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
  71         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
  72         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
  73         loadmodel->radius = radius;
  74         loadmodel->radius2 = radius * radius;
  75 }
  76
  77 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out)
  78 {
  79         int i, j;
  80         vec3_t temp;
  81         for (i = 0;i < inverts;i++)
  82         {
  83                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  84                         continue;
  85                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  86                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  87                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  88                 j = vertremap[i]; // not onseam
  89                 if (j >= 0)
  90                         VectorCopy(temp, out[j].origin);
  91                 j = vertremap[i+inverts]; // onseam
  92                 if (j >= 0)
  93                         VectorCopy(temp, out[j].origin);
  94         }
  95 }
  96
  97 static void Mod_BuildAliasVertexTextureVectors(int numverts, aliasvertex_t *vertices, const float *texcoords, float *vertexbuffer, float *svectorsbuffer, float *tvectorsbuffer, float *normalsbuffer, int numtriangles, const int *elements)
  98 {
  99         int i;
 100         for (i = 0;i < numverts;i++)
 101                 VectorCopy(vertices[i].origin, &vertexbuffer[i * 4]);
 102         Mod_BuildTextureVectorsAndNormals(numverts, numtriangles, vertexbuffer, texcoords, elements, svectorsbuffer, tvectorsbuffer, normalsbuffer);
 103         for (i = 0;i < numverts;i++)
 104         {
 105                 // LordHavoc: alias models are backwards, apparently
 106                 vertices[i].normal[0] = normalsbuffer[i * 4 + 0];
 107                 vertices[i].normal[1] = normalsbuffer[i * 4 + 1];
 108                 vertices[i].normal[2] = normalsbuffer[i * 4 + 2];
 109                 vertices[i].svector[0] = svectorsbuffer[i * 4 + 0];
 110                 vertices[i].svector[1] = svectorsbuffer[i * 4 + 1];
 111                 vertices[i].svector[2] = svectorsbuffer[i * 4 + 2];
 112         }
 113 }
 114
 115 static void Mod_MDL_LoadFrames (qbyte* datapointer, int inverts, int outverts, vec3_t scale, vec3_t translate, float *texcoords, aliasvertex_t *posedata, int numtris, int *elements)
 116 {
 117         int i, f, pose, groupframes;
 118         float interval, *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 119         daliasframetype_t *pframetype;
 120         daliasframe_t *pinframe;
 121         daliasgroup_t *group;
 122         daliasinterval_t *intervals;
 123         animscene_t *scene;
 124         pose = 0;
 125         scene = loadmodel->animscenes;
 126         vertexbuffer = Mem_Alloc(tempmempool, outverts * sizeof(float[4]) * 4);
 127         svectorsbuffer = vertexbuffer + outverts * 4;
 128         tvectorsbuffer = svectorsbuffer + outverts * 4;
 129         normalsbuffer = tvectorsbuffer + outverts * 4;
 130         for (f = 0;f < loadmodel->numframes;f++)
 131         {
 132                 pframetype = (daliasframetype_t *)datapointer;
 133                 datapointer += sizeof(daliasframetype_t);
 134                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 135                 {
 136                         // a single frame is still treated as a group
 137                         interval = 0.1f;
 138                         groupframes = 1;
 139                 }
 140                 else
 141                 {
 142                         // read group header
 143                         group = (daliasgroup_t *)datapointer;
 144                         datapointer += sizeof(daliasgroup_t);
 145                         groupframes = LittleLong (group->numframes);
 146
 147                         // intervals (time per frame)
 148                         intervals = (daliasinterval_t *)datapointer;
 149                         datapointer += sizeof(daliasinterval_t) * groupframes;
 150
 151                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 152                         if (interval < 0.01f)
 153                                 Host_Error("Mod_MDL_LoadFrames: invalid interval");
 154                 }
 155
 156                 // get scene name from first frame
 157                 pinframe = (daliasframe_t *)datapointer;
 158
 159                 strcpy(scene->name, pinframe->name);
 160                 scene->firstframe = pose;
 161                 scene->framecount = groupframes;
 162                 scene->framerate = 1.0f / interval;
 163                 scene->loop = true;
 164                 scene++;
 165
 166                 // read frames
 167                 for (i = 0;i < groupframes;i++)
 168                 {
 169                         pinframe = (daliasframe_t *)datapointer;
 170                         datapointer += sizeof(daliasframe_t);
 171                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, posedata + pose * outverts);
 172                         Mod_BuildAliasVertexTextureVectors(outverts, posedata + pose * outverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 173                         datapointer += sizeof(trivertx_t) * inverts;
 174                         pose++;
 175                 }
 176         }
 177         Mem_Free(vertexbuffer);
 178 }
 179
 180 static rtexture_t *GL_TextureForSkinLayer(const qbyte *in, int width, int height, const char *name, const unsigned int *palette, int precache)
 181 {
 182         int i;
 183         for (i = 0;i < width*height;i++)
 184                 if (((qbyte *)&palette[in[i]])[3] > 0)
 185                         return R_LoadTexture2D (loadmodel->texturepool, name, width, height, in, TEXTYPE_PALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0), palette);
 186         return NULL;
 187 }
 188
 189 static int Mod_LoadExternalSkin (char *basename, skinframe_t *skinframe, int precache)
 190 {
 191         skinframe->nmap   = loadtextureimage(loadmodel->texturepool, va("%s_nmap" , basename), 0, 0, false, (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 192         if (skinframe->nmap == NULL)
 193                 skinframe->nmap   = loadtextureimagebumpasnmap(loadmodel->texturepool, va("%s_bump" , basename), 0, 0, false, (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 194         if (skinframe->nmap != NULL)
 195         {
 196                 skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, va("%s_normal", basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 197                 if (skinframe->base == NULL)
 198                         skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, basename, 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 199                 skinframe->fog    = image_masktex;
 200         }
 201         else
 202         {
 203                 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);
 204                 if (skinframe->base == NULL)
 205                         skinframe->base   = loadtextureimagewithmaskandnmap(loadmodel->texturepool, basename, 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0), 1);
 206                 skinframe->fog    = image_masktex;
 207                 skinframe->nmap   = image_nmaptex;
 208         }
 209         skinframe->gloss  = loadtextureimage(loadmodel->texturepool, va("%s_gloss" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 210         skinframe->pants  = loadtextureimage(loadmodel->texturepool, va("%s_pants" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 211         skinframe->shirt  = loadtextureimage(loadmodel->texturepool, va("%s_shirt" , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 212         skinframe->glow   = loadtextureimage(loadmodel->texturepool, va("%s_glow"  , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 213         if (skinframe->glow == NULL)
 214                 skinframe->glow = loadtextureimage(loadmodel->texturepool, va("%s_luma"  , basename), 0, 0, false, TEXF_ALPHA | (precache ? TEXF_PRECACHE : 0) | (r_mipskins.integer ? TEXF_MIPMAP : 0));
 215         skinframe->merged = skinframe->base;
 216         return skinframe->base != NULL || skinframe->pants != NULL || skinframe->shirt != NULL || skinframe->glow != NULL;
 217 }
 218
 219 static int Mod_LoadInternalSkin (char *basename, qbyte *skindata, int width, int height, skinframe_t *skinframe, int precache)
 220 {
 221         qbyte *temp1, *temp2;
 222         if (!skindata)
 223                 return false;
 224         temp1 = Mem_Alloc(loadmodel->mempool, width * height * 8);
 225         temp2 = temp1 + width * height * 4;
 226         Image_Copy8bitRGBA(skindata, temp1, width * height, palette_nofullbrights);
 227         Image_HeightmapToNormalmap(temp1, temp2, width, height, false, 1);
 228         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);
 229         Mem_Free(temp1);
 230         skinframe->gloss  = NULL;
 231         skinframe->pants  = GL_TextureForSkinLayer(skindata, width, height, va("%s_pants", basename), palette_pantsaswhite, false); // pants
 232         skinframe->shirt  = GL_TextureForSkinLayer(skindata, width, height, va("%s_shirt", basename), palette_shirtaswhite, false); // shirt
 233         skinframe->glow   = GL_TextureForSkinLayer(skindata, width, height, va("%s_glow", basename), palette_onlyfullbrights, precache); // glow
 234         if (skinframe->pants || skinframe->shirt)
 235         {
 236                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_normal", basename), palette_nocolormapnofullbrights, false); // normal (no special colors)
 237                 skinframe->merged = GL_TextureForSkinLayer(skindata, width, height, va("%s_body", basename), palette_nofullbrights, precache); // body (normal + pants + shirt, but not glow)
 238         }
 239         else
 240                 skinframe->base   = GL_TextureForSkinLayer(skindata, width, height, va("%s_base", basename), palette_nofullbrights, precache); // no special colors
 241         // quake model skins don't have alpha
 242         skinframe->fog = NULL;
 243         return true;
 244 }
 245
 246 void Mod_BuildAliasSkinFromSkinFrame(aliasskin_t *skin, skinframe_t *skinframe)
 247 {
 248         aliaslayer_t *layer;
 249         skin->flags = 0;
 250         // fog texture only exists if some pixels are transparent...
 251         if (skinframe->fog != NULL)
 252                 skin->flags |= ALIASSKIN_TRANSPARENT;
 253         // fog and gloss layers always exist
 254         skin->num_layers = 2;
 255         if (skinframe->glow != NULL)
 256                 skin->num_layers++;
 257         if (skinframe->merged != NULL)
 258                 skin->num_layers += 2;
 259         if (skinframe->base != NULL)
 260                 skin->num_layers += 2;
 261         if (skinframe->pants != NULL)
 262                 skin->num_layers += 2;
 263         if (skinframe->shirt != NULL)
 264                 skin->num_layers += 2;
 265         layer = skin->data_layers = Mem_Alloc(loadmodel->mempool, skin->num_layers * sizeof(aliaslayer_t));
 266         if (skinframe->glow != NULL)
 267         {
 268                 layer->flags = 0;
 269                 layer->texture = skinframe->glow;
 270                 layer++;
 271         }
 272         if (skinframe->merged != NULL)
 273         {
 274                 layer->flags = ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 275                 if (skinframe->glow != NULL)
 276                         layer->flags |= ALIASLAYER_ADD;
 277                 layer->texture = skinframe->merged;
 278                 layer->nmap = skinframe->nmap;
 279                 layer++;
 280         }
 281         if (skinframe->base != NULL)
 282         {
 283                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 284                 if (skinframe->glow != NULL)
 285                         layer->flags |= ALIASLAYER_ADD;
 286                 layer->texture = skinframe->base;
 287                 layer->nmap = skinframe->nmap;
 288                 layer++;
 289         }
 290         if (skinframe->pants != NULL)
 291         {
 292                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 293                 if (skinframe->glow != NULL || skinframe->base != NULL)
 294                         layer->flags |= ALIASLAYER_ADD;
 295                 layer->texture = skinframe->pants;
 296                 layer->nmap = skinframe->nmap;
 297                 layer++;
 298         }
 299         if (skinframe->shirt != NULL)
 300         {
 301                 layer->flags = ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 302                 if (skinframe->glow != NULL || skinframe->base != NULL || skinframe->pants != NULL)
 303                         layer->flags |= ALIASLAYER_ADD;
 304                 layer->texture = skinframe->shirt;
 305                 layer->nmap = skinframe->nmap;
 306                 layer++;
 307         }
 308         layer->flags = ALIASLAYER_FOG;
 309         layer->texture = skinframe->fog;
 310         layer++;
 311         layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_SPECULAR;
 312         layer->texture = skinframe->gloss;
 313         layer->nmap = skinframe->nmap;
 314         layer++;
 315         if (skinframe->merged != NULL)
 316         {
 317                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_COLORMAPPED | ALIASLAYER_DIFFUSE;
 318                 layer->texture = skinframe->merged;
 319                 layer->nmap = skinframe->nmap;
 320                 layer++;
 321         }
 322         if (skinframe->base != NULL)
 323         {
 324                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE;
 325                 layer->texture = skinframe->base;
 326                 layer->nmap = skinframe->nmap;
 327                 layer++;
 328         }
 329         if (skinframe->pants != NULL)
 330         {
 331                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_PANTS;
 332                 layer->texture = skinframe->pants;
 333                 layer->nmap = skinframe->nmap;
 334                 layer++;
 335         }
 336         if (skinframe->shirt != NULL)
 337         {
 338                 layer->flags = ALIASLAYER_DRAW_PER_LIGHT | ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED | ALIASLAYER_DIFFUSE | ALIASLAYER_COLORMAP_SHIRT;
 339                 layer->texture = skinframe->shirt;
 340                 layer->nmap = skinframe->nmap;
 341                 layer++;
 342         }
 343 }
 344
 345 void Mod_BuildMDLMD2MeshInfo(int numverts, int numtris, int *elements, float *texcoords, aliasvertex_t *posedata)
 346 {
 347         int i;
 348         aliasmesh_t *mesh;
 349
 350         loadmodel->aliasnum_meshes = 1;
 351         mesh = loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 352         mesh->num_skins = 0;
 353         mesh->num_frames = 0;
 354         for (i = 0;i < loadmodel->numframes;i++)
 355                 mesh->num_frames += loadmodel->animscenes[i].framecount;
 356         for (i = 0;i < loadmodel->numskins;i++)
 357                 mesh->num_skins += loadmodel->skinscenes[i].framecount;
 358         mesh->num_triangles = numtris;
 359         mesh->num_vertices = numverts;
 360         mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 361         mesh->data_elements = elements;
 362         mesh->data_neighbors = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 363         Mod_ValidateElements(mesh->data_elements, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 364         Mod_BuildTriangleNeighbors(mesh->data_neighbors, mesh->data_elements, mesh->num_triangles);
 365         mesh->data_texcoords = texcoords;
 366         mesh->data_vertices = posedata;
 367         for (i = 0;i < mesh->num_skins;i++)
 368                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins + i, loadmodel->skinframes + i);
 369         Mod_CalcAliasModelBBoxes();
 370 }
 371
 372 #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);
 373 #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);
 374 extern void R_Model_Alias_Draw(entity_render_t *ent);
 375 extern void R_Model_Alias_DrawFakeShadow(entity_render_t *ent);
 376 extern void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 377 extern void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 378 void Mod_LoadQ1AliasModel (model_t *mod, void *buffer)
 379 {
 380         int i, j, version, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins, *elements, numverts, numtris;
 381         float scales, scalet, scale[3], translate[3], interval, *texcoords;
 382         mdl_t *pinmodel;
 383         stvert_t *pinstverts;
 384         dtriangle_t *pintriangles;
 385         daliasskintype_t *pinskintype;
 386         daliasskingroup_t *pinskingroup;
 387         daliasskininterval_t *pinskinintervals;
 388         daliasframetype_t *pinframetype;
 389         daliasgroup_t *pinframegroup;
 390         aliasvertex_t *posedata;
 391         qbyte *datapointer, *startframes, *startskins;
 392         char name[MAX_QPATH];
 393         skinframe_t tempskinframe;
 394         animscene_t *tempskinscenes;
 395         skinframe_t *tempskinframes;
 396
 397         datapointer = buffer;
 398         pinmodel = (mdl_t *)datapointer;
 399         datapointer += sizeof(mdl_t);
 400
 401         version = LittleLong (pinmodel->version);
 402         if (version != ALIAS_VERSION)
 403                 Host_Error ("%s has wrong version number (%i should be %i)",
 404                                  loadmodel->name, version, ALIAS_VERSION);
 405
 406         loadmodel->type = mod_alias;
 407         loadmodel->aliastype = ALIASTYPE_ALIAS;
 408         loadmodel->DrawSky = NULL;
 409         loadmodel->Draw = R_Model_Alias_Draw;
 410         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 411         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 412         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 413
 414         loadmodel->numskins = LittleLong(pinmodel->numskins);
 415         BOUNDI(loadmodel->numskins,0,256);
 416         skinwidth = LittleLong (pinmodel->skinwidth);
 417         BOUNDI(skinwidth,0,4096);
 418         skinheight = LittleLong (pinmodel->skinheight);
 419         BOUNDI(skinheight,0,4096);
 420         numverts = LittleLong(pinmodel->numverts);
 421         BOUNDI(numverts,0,MAXALIASVERTS);
 422         numtris = LittleLong(pinmodel->numtris);
 423         BOUNDI(numtris,0,MAXALIASTRIS);
 424         loadmodel->numframes = LittleLong(pinmodel->numframes);
 425         BOUNDI(loadmodel->numframes,0,65536);
 426         loadmodel->synctype = LittleLong (pinmodel->synctype);
 427         BOUNDI(loadmodel->synctype,0,2);
 428         loadmodel->flags = LittleLong (pinmodel->flags);
 429
 430         for (i = 0;i < 3;i++)
 431         {
 432                 scale[i] = LittleFloat (pinmodel->scale[i]);
 433                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 434         }
 435
 436         startskins = datapointer;
 437         totalskins = 0;
 438         for (i = 0;i < loadmodel->numskins;i++)
 439         {
 440                 pinskintype = (daliasskintype_t *)datapointer;
 441                 datapointer += sizeof(daliasskintype_t);
 442                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 443                         groupskins = 1;
 444                 else
 445                 {
 446                         pinskingroup = (daliasskingroup_t *)datapointer;
 447                         datapointer += sizeof(daliasskingroup_t);
 448                         groupskins = LittleLong(pinskingroup->numskins);
 449                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 450                 }
 451
 452                 for (j = 0;j < groupskins;j++)
 453                 {
 454                         datapointer += skinwidth * skinheight;
 455                         totalskins++;
 456                 }
 457         }
 458
 459         pinstverts = (stvert_t *)datapointer;
 460         datapointer += sizeof(stvert_t) * numverts;
 461
 462         pintriangles = (dtriangle_t *)datapointer;
 463         datapointer += sizeof(dtriangle_t) * numtris;
 464
 465         startframes = datapointer;
 466         totalposes = 0;
 467         for (i = 0;i < loadmodel->numframes;i++)
 468         {
 469                 pinframetype = (daliasframetype_t *)datapointer;
 470                 datapointer += sizeof(daliasframetype_t);
 471                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 472                         groupframes = 1;
 473                 else
 474                 {
 475                         pinframegroup = (daliasgroup_t *)datapointer;
 476                         datapointer += sizeof(daliasgroup_t);
 477                         groupframes = LittleLong(pinframegroup->numframes);
 478                         datapointer += sizeof(daliasinterval_t) * groupframes;
 479                 }
 480
 481                 for (j = 0;j < groupframes;j++)
 482                 {
 483                         datapointer += sizeof(daliasframe_t);
 484                         datapointer += sizeof(trivertx_t) * numverts;
 485                         totalposes++;
 486                 }
 487         }
 488
 489         // load the skins
 490         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 491         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 492         totalskins = 0;
 493         datapointer = startskins;
 494         for (i = 0;i < loadmodel->numskins;i++)
 495         {
 496                 pinskintype = (daliasskintype_t *)datapointer;
 497                 datapointer += sizeof(daliasskintype_t);
 498
 499                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 500                 {
 501                         groupskins = 1;
 502                         interval = 0.1f;
 503                 }
 504                 else
 505                 {
 506                         pinskingroup = (daliasskingroup_t *)datapointer;
 507                         datapointer += sizeof(daliasskingroup_t);
 508
 509                         groupskins = LittleLong (pinskingroup->numskins);
 510
 511                         pinskinintervals = (daliasskininterval_t *)datapointer;
 512                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 513
 514                         interval = LittleFloat(pinskinintervals[0].interval);
 515                         if (interval < 0.01f)
 516                                 Host_Error("Mod_LoadQ1AliasModel: invalid interval\n");
 517                 }
 518
 519                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 520                 loadmodel->skinscenes[i].firstframe = totalskins;
 521                 loadmodel->skinscenes[i].framecount = groupskins;
 522                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 523                 loadmodel->skinscenes[i].loop = true;
 524
 525                 for (j = 0;j < groupskins;j++)
 526                 {
 527                         if (groupskins > 1)
 528                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 529                         else
 530                                 sprintf (name, "%s_%i", loadmodel->name, i);
 531                         if (!Mod_LoadExternalSkin(name, loadmodel->skinframes + totalskins, i == 0))
 532                                 Mod_LoadInternalSkin(name, (qbyte *)datapointer, skinwidth, skinheight, loadmodel->skinframes + totalskins, i == 0);
 533                         datapointer += skinwidth * skinheight;
 534                         totalskins++;
 535                 }
 536         }
 537         // check for skins that don't exist in the model, but do exist as external images
 538         // (this was added because yummyluv kept pestering me about support for it)
 539         for (;;)
 540         {
 541                 sprintf (name, "%s_%i", loadmodel->name, loadmodel->numskins);
 542                 if (Mod_LoadExternalSkin(name, &tempskinframe, loadmodel->numskins == 0))
 543                 {
 544                         // expand the arrays to make room
 545                         tempskinscenes = loadmodel->skinscenes;
 546                         tempskinframes = loadmodel->skinframes;
 547                         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
 548                         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, (totalskins + 1) * sizeof(skinframe_t));
 549                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
 550                         memcpy(loadmodel->skinframes, tempskinframes, totalskins * sizeof(skinframe_t));
 551                         Mem_Free(tempskinscenes);
 552                         Mem_Free(tempskinframes);
 553                         // store the info about the new skin
 554                         strcpy(loadmodel->skinscenes[loadmodel->numskins].name, name);
 555                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
 556                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
 557                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
 558                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
 559                         loadmodel->skinframes[totalskins] = tempskinframe;
 560                         loadmodel->numskins++;
 561                         totalskins++;
 562                 }
 563                 else
 564                         break;
 565         }
 566
 567         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 568         scales = 1.0 / skinwidth;
 569         scalet = 1.0 / skinheight;
 570         for (i = 0;i < numverts;i++)
 571         {
 572                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 573                 vertst[i][0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
 574                 vertst[i][1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
 575                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 576                 vertst[i+numverts][1] = vertst[i][1];
 577                 vertusage[i] = 0;
 578                 vertusage[i+numverts] = 0;
 579         }
 580
 581 // load triangle data
 582         elements = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * numtris);
 583
 584         // count the vertices used
 585         for (i = 0;i < numverts*2;i++)
 586                 vertusage[i] = 0;
 587         for (i = 0;i < numtris;i++)
 588         {
 589                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 590                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 591                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 592                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 593                 {
 594                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 595                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 596                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 597                 }
 598                 vertusage[temptris[i][0]]++;
 599                 vertusage[temptris[i][1]]++;
 600                 vertusage[temptris[i][2]]++;
 601         }
 602         // build remapping table and compact array
 603         totalverts = 0;
 604         for (i = 0;i < numverts*2;i++)
 605         {
 606                 if (vertusage[i])
 607                 {
 608                         vertremap[i] = totalverts;
 609                         vertst[totalverts][0] = vertst[i][0];
 610                         vertst[totalverts][1] = vertst[i][1];
 611                         totalverts++;
 612                 }
 613                 else
 614                         vertremap[i] = -1; // not used at all
 615         }
 616         // remap the triangle references
 617         for (i = 0;i < numtris;i++)
 618         {
 619                 elements[i*3+0] = vertremap[temptris[i][0]];
 620                 elements[i*3+1] = vertremap[temptris[i][1]];
 621                 elements[i*3+2] = vertremap[temptris[i][2]];
 622         }
 623         // store the texture coordinates
 624         texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[4]) * totalverts);
 625         for (i = 0;i < totalverts;i++)
 626         {
 627                 texcoords[i*4+0] = vertst[i][0];
 628                 texcoords[i*4+1] = vertst[i][1];
 629         }
 630
 631 // load the frames
 632         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 633         posedata = Mem_Alloc(loadmodel->mempool, sizeof(aliasvertex_t) * totalposes * totalverts);
 634         Mod_MDL_LoadFrames (startframes, numverts, totalverts, scale, translate, texcoords, posedata, numtris, elements);
 635         Mod_BuildMDLMD2MeshInfo(totalverts, numtris, elements, texcoords, posedata);
 636 }
 637
 638 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, aliasvertex_t *out, int numverts, int *vertremap)
 639 {
 640         int i;
 641         trivertx_t *in;
 642         for (i = 0;i < numverts;i++)
 643         {
 644                 in = v + vertremap[i];
 645                 out[i].origin[0] = in->v[0] * scale[0] + translate[0];
 646                 out[i].origin[1] = in->v[1] * scale[1] + translate[1];
 647                 out[i].origin[2] = in->v[2] * scale[2] + translate[2];
 648         }
 649 }
 650
 651 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 652 {
 653         int i, j, k, hashindex, num, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end, *elements, numverts, numtris;
 654         float *stverts, s, t, scale[3], translate[3], *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer, *texcoords;
 655         aliasvertex_t *posedata;
 656         md2_t *pinmodel;
 657         qbyte *base, *datapointer;
 658         md2frame_t *pinframe;
 659         char *inskin;
 660         md2triangle_t *intri;
 661         unsigned short *inst;
 662         struct md2verthash_s
 663         {
 664                 struct md2verthash_s *next;
 665                 int xyz;
 666                 float st[2];
 667         }
 668         *hash, **md2verthash, *md2verthashdata;
 669
 670         pinmodel = buffer;
 671         base = buffer;
 672
 673         version = LittleLong (pinmodel->version);
 674         if (version != MD2ALIAS_VERSION)
 675                 Host_Error ("%s has wrong version number (%i should be %i)",
 676                         loadmodel->name, version, MD2ALIAS_VERSION);
 677
 678         loadmodel->type = mod_alias;
 679         loadmodel->aliastype = ALIASTYPE_ALIAS;
 680         loadmodel->DrawSky = NULL;
 681         loadmodel->Draw = R_Model_Alias_Draw;
 682         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 683         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 684         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 685
 686         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 687                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 688         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 689                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 690         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 691                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 692         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 693                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 694
 695         end = LittleLong(pinmodel->ofs_end);
 696         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 697                 Host_Error ("%s is not a valid model", loadmodel->name);
 698         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 699                 Host_Error ("%s is not a valid model", loadmodel->name);
 700         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 701                 Host_Error ("%s is not a valid model", loadmodel->name);
 702         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 703                 Host_Error ("%s is not a valid model", loadmodel->name);
 704         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 705                 Host_Error ("%s is not a valid model", loadmodel->name);
 706
 707         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 708         numxyz = LittleLong(pinmodel->num_xyz);
 709         numst = LittleLong(pinmodel->num_st);
 710         numtris = LittleLong(pinmodel->num_tris);
 711         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 712
 713         loadmodel->flags = 0; // there are no MD2 flags
 714         loadmodel->synctype = ST_RAND;
 715
 716         // load the skins
 717         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 718         if (loadmodel->numskins)
 719         {
 720                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins + sizeof(skinframe_t) * loadmodel->numskins);
 721                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + loadmodel->numskins);
 722                 for (i = 0;i < loadmodel->numskins;i++)
 723                 {
 724                         loadmodel->skinscenes[i].firstframe = i;
 725                         loadmodel->skinscenes[i].framecount = 1;
 726                         loadmodel->skinscenes[i].loop = true;
 727                         loadmodel->skinscenes[i].framerate = 10;
 728                         Mod_LoadExternalSkin (inskin, loadmodel->skinframes + i, true);
 729                         inskin += MD2MAX_SKINNAME;
 730                 }
 731         }
 732
 733         // load the triangles and stvert data
 734         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 735         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 736         skinwidth = LittleLong(pinmodel->skinwidth);
 737         skinheight = LittleLong(pinmodel->skinheight);
 738
 739         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 740         s = 1.0f / skinwidth;
 741         t = 1.0f / skinheight;
 742         for (i = 0;i < numst;i++)
 743         {
 744                 j = (unsigned short) LittleShort(inst[i*2+0]);
 745                 k = (unsigned short) LittleShort(inst[i*2+1]);
 746                 if (j >= skinwidth || k >= skinheight)
 747                 {
 748                         Mem_Free(stverts);
 749                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 750                 }
 751                 stverts[i*2+0] = j * s;
 752                 stverts[i*2+1] = k * t;
 753         }
 754
 755         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 756         md2verthashdata = Mem_Alloc(tempmempool, numtris * 3 * sizeof(*hash));
 757         // swap the triangle list
 758         num = 0;
 759         elements = Mem_Alloc(loadmodel->mempool, numtris * sizeof(int[3]));
 760         for (i = 0;i < numtris;i++)
 761         {
 762                 for (j = 0;j < 3;j++)
 763                 {
 764                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 765                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 766                         if (xyz >= numxyz || st >= numst)
 767                         {
 768                                 Mem_Free(md2verthash);
 769                                 Mem_Free(md2verthashdata);
 770                                 Mem_Free(stverts);
 771                                 if (xyz >= numxyz)
 772                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 773                                 if (st >= numst)
 774                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 775                         }
 776                         s = stverts[st*2+0];
 777                         t = stverts[st*2+1];
 778                         hashindex = (xyz * 17 + st) & 255;
 779                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 780                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 781                                         break;
 782                         if (hash == NULL)
 783                         {
 784                                 hash = md2verthashdata + num++;
 785                                 hash->xyz = xyz;
 786                                 hash->st[0] = s;
 787                                 hash->st[1] = t;
 788                                 hash->next = md2verthash[hashindex];
 789                                 md2verthash[hashindex] = hash;
 790                         }
 791                         elements[i*3+j] = (hash - md2verthashdata);
 792                 }
 793         }
 794
 795         Mem_Free(stverts);
 796
 797         numverts = num;
 798         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 799         texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[4]));
 800         for (i = 0;i < num;i++)
 801         {
 802                 hash = md2verthashdata + i;
 803                 vertremap[i] = hash->xyz;
 804                 texcoords[i*4+0] = hash->st[0];
 805                 texcoords[i*4+1] = hash->st[1];
 806         }
 807
 808         Mem_Free(md2verthash);
 809         Mem_Free(md2verthashdata);
 810
 811         // load the frames
 812         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 813         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 814         posedata = Mem_Alloc(loadmodel->mempool, numverts * loadmodel->numframes * sizeof(trivertx_t));
 815
 816         vertexbuffer = Mem_Alloc(tempmempool, numverts * sizeof(float[4]) * 4);
 817         svectorsbuffer = vertexbuffer + numverts * 4;
 818         tvectorsbuffer = svectorsbuffer + numverts * 4;
 819         normalsbuffer = tvectorsbuffer + numverts * 4;
 820         for (i = 0;i < loadmodel->numframes;i++)
 821         {
 822                 pinframe = (md2frame_t *)datapointer;
 823                 datapointer += sizeof(md2frame_t);
 824                 for (j = 0;j < 3;j++)
 825                 {
 826                         scale[j] = LittleFloat(pinframe->scale[j]);
 827                         translate[j] = LittleFloat(pinframe->translate[j]);
 828                 }
 829                 Mod_MD2_ConvertVerts(scale, translate, (void *)datapointer, posedata + i * numverts, numverts, vertremap);
 830                 Mod_BuildAliasVertexTextureVectors(numverts, posedata + i * numverts, texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, numtris, elements);
 831                 datapointer += numxyz * sizeof(trivertx_t);
 832
 833                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 834                 loadmodel->animscenes[i].firstframe = i;
 835                 loadmodel->animscenes[i].framecount = 1;
 836                 loadmodel->animscenes[i].framerate = 10;
 837                 loadmodel->animscenes[i].loop = true;
 838         }
 839         Mem_Free(vertexbuffer);
 840
 841         Mem_Free(vertremap);
 842
 843         Mod_BuildMDLMD2MeshInfo(numverts, numtris, elements, texcoords, posedata);
 844 }
 845
 846 void Mod_LoadQ3AliasModel(model_t *mod, void *buffer)
 847 {
 848         int i, j, version;
 849         float *vertexbuffer, *svectorsbuffer, *tvectorsbuffer, *normalsbuffer;
 850         md3modelheader_t *pinmodel;
 851         md3frameinfo_t *pinframe;
 852         md3mesh_t *pinmesh;
 853         aliasmesh_t *mesh;
 854         skinframe_t tempskinframe;
 855
 856         pinmodel = buffer;
 857
 858         if (memcmp(pinmodel->identifier, "IDP3", 4))
 859                 Host_Error ("%s is not a MD3 (IDP3) file\n", loadmodel->name);
 860         version = LittleLong (pinmodel->version);
 861         if (version != MD3VERSION)
 862                 Host_Error ("%s has wrong version number (%i should be %i)",
 863                         loadmodel->name, version, MD3VERSION);
 864
 865         loadmodel->type = mod_alias;
 866         loadmodel->aliastype = ALIASTYPE_ALIAS;
 867         loadmodel->DrawSky = NULL;
 868         loadmodel->Draw = R_Model_Alias_Draw;
 869         loadmodel->DrawFakeShadow = R_Model_Alias_DrawFakeShadow;
 870         loadmodel->DrawShadowVolume = R_Model_Alias_DrawShadowVolume;
 871         loadmodel->DrawLight = R_Model_Alias_DrawLight;
 872         loadmodel->flags = 0;
 873         loadmodel->synctype = ST_RAND;
 874
 875         // set up some global info about the model
 876         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 877         loadmodel->numskins = 1;
 878         loadmodel->aliasnum_meshes = LittleLong(pinmodel->num_meshes);
 879         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 880         loadmodel->skinscenes[0].firstframe = 0;
 881         loadmodel->skinscenes[0].framecount = 1;
 882         loadmodel->skinscenes[0].loop = true;
 883         loadmodel->skinscenes[0].framerate = 10;
 884
 885         // load frameinfo
 886         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 887         for (i = 0, pinframe = (md3frameinfo_t *)((qbyte *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
 888         {
 889                 strcpy(loadmodel->animscenes[i].name, pinframe->name);
 890                 loadmodel->animscenes[i].firstframe = i;
 891                 loadmodel->animscenes[i].framecount = 1;
 892                 loadmodel->animscenes[i].framerate = 10;
 893                 loadmodel->animscenes[i].loop = true;
 894         }
 895
 896         // tags are not loaded yet
 897
 898         // load meshes
 899         loadmodel->aliasdata_meshes = Mem_Alloc(loadmodel->mempool, loadmodel->aliasnum_meshes * sizeof(aliasmesh_t));
 900         for (i = 0, pinmesh = (md3mesh_t *)((qbyte *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->aliasnum_meshes;i++, pinmesh = (md3mesh_t *)((qbyte *)pinmesh + LittleLong(pinmesh->lump_end)))
 901         {
 902                 if (memcmp(pinmesh->identifier, "IDP3", 4))
 903                         Host_Error("Mod_LoadQ3AliasModel: invalid mesh identifier (not IDP3)\n");
 904                 mesh = loadmodel->aliasdata_meshes + i;
 905                 mesh->num_skins = loadmodel->numskins;
 906                 mesh->num_frames = LittleLong(pinmesh->num_frames);
 907                 mesh->num_vertices = LittleLong(pinmesh->num_vertices);
 908                 mesh->num_triangles = LittleLong(pinmesh->num_triangles);
 909                 mesh->data_skins = Mem_Alloc(loadmodel->mempool, mesh->num_skins * sizeof(aliasskin_t));
 910                 mesh->data_elements = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 911                 mesh->data_neighbors = Mem_Alloc(loadmodel->mempool, mesh->num_triangles * sizeof(int[3]));
 912                 mesh->data_texcoords = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * sizeof(float[4]));
 913                 mesh->data_vertices = Mem_Alloc(loadmodel->mempool, mesh->num_vertices * mesh->num_frames * sizeof(aliasvertex_t));
 914                 for (j = 0;j < mesh->num_triangles * 3;j++)
 915                         mesh->data_elements[j] = LittleLong(((int *)((qbyte *)pinmesh + pinmesh->lump_elements))[j]);
 916                 for (j = 0;j < mesh->num_vertices;j++)
 917                 {
 918                         mesh->data_texcoords[j * 4 + 0] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 0]);
 919                         mesh->data_texcoords[j * 4 + 1] = LittleLong(((float *)((qbyte *)pinmesh + pinmesh->lump_texcoords))[j * 2 + 1]);
 920                 }
 921                 for (j = 0;j < mesh->num_vertices * mesh->num_frames;j++)
 922                 {
 923                         mesh->data_vertices[j].origin[0] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 0]) * (1.0f / 64.0f);
 924                         mesh->data_vertices[j].origin[1] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 1]) * (1.0f / 64.0f);
 925                         mesh->data_vertices[j].origin[2] = LittleShort(((short *)((qbyte *)pinmesh + pinmesh->lump_framevertices))[j * 4 + 2]) * (1.0f / 64.0f);
 926                 }
 927                 vertexbuffer = Mem_Alloc(tempmempool, mesh->num_vertices * sizeof(float[4]) * 4);
 928                 svectorsbuffer = vertexbuffer + mesh->num_vertices * 4;
 929                 tvectorsbuffer = svectorsbuffer + mesh->num_vertices * 4;
 930                 normalsbuffer = tvectorsbuffer + mesh->num_vertices * 4;
 931                 for (j = 0;j < mesh->num_frames;j++)
 932                         Mod_BuildAliasVertexTextureVectors(mesh->num_vertices, mesh->data_vertices + j * mesh->num_vertices, mesh->data_texcoords, vertexbuffer, svectorsbuffer, tvectorsbuffer, normalsbuffer, mesh->num_triangles, mesh->data_elements);
 933                 Mem_Free(vertexbuffer);
 934
 935                 memset(&tempskinframe, 0, sizeof(tempskinframe));
 936                 if (LittleLong(pinmesh->num_shaders) >= 1 && ((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name[0])
 937                         Mod_LoadExternalSkin (((md3shader_t *)((qbyte *) pinmesh + pinmesh->lump_shaders))->name, &tempskinframe, true);
 938                 Mod_ValidateElements(mesh->data_elements, mesh->num_triangles, mesh->num_vertices, __FILE__, __LINE__);
 939                 Mod_BuildTriangleNeighbors(mesh->data_neighbors, mesh->data_elements, mesh->num_triangles);
 940                 Mod_BuildAliasSkinFromSkinFrame(mesh->data_skins, &tempskinframe);
 941         }
 942         Mod_CalcAliasModelBBoxes();
 943 }
 944
 945 extern void R_Model_Zymotic_DrawSky(entity_render_t *ent);
 946 extern void R_Model_Zymotic_Draw(entity_render_t *ent);
 947 extern void R_Model_Zymotic_DrawFakeShadow(entity_render_t *ent);
 948 extern void R_Model_Zymotic_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius);
 949 extern void R_Model_Zymotic_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor);
 950 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 951 {
 952         zymtype1header_t *pinmodel, *pheader;
 953         qbyte *pbase;
 954
 955         pinmodel = (void *)buffer;
 956         pbase = buffer;
 957         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 958                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 959         if (BigLong(pinmodel->type) != 1)
 960                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 961
 962         loadmodel->type = mod_alias;
 963         loadmodel->aliastype = ALIASTYPE_ZYM;
 964         loadmodel->DrawSky = NULL;
 965         loadmodel->Draw = R_Model_Zymotic_Draw;
 966         loadmodel->DrawFakeShadow = NULL;//R_Model_Zymotic_DrawFakeShadow;
 967         loadmodel->DrawShadowVolume = NULL;//R_Model_Zymotic_DrawShadowVolume;
 968         loadmodel->DrawLight = NULL;//R_Model_Zymotic_DrawLight;
 969
 970         // byteswap header
 971         pheader = pinmodel;
 972         pheader->type = BigLong(pinmodel->type);
 973         pheader->filesize = BigLong(pinmodel->filesize);
 974         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
 975         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
 976         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
 977         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
 978         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
 979         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
 980         pheader->radius = BigFloat(pinmodel->radius);
 981         pheader->numverts = loadmodel->zymnum_verts = BigLong(pinmodel->numverts);
 982         pheader->numtris = loadmodel->zymnum_tris = BigLong(pinmodel->numtris);
 983         pheader->numshaders = loadmodel->zymnum_shaders = BigLong(pinmodel->numshaders);
 984         pheader->numbones = loadmodel->zymnum_bones = BigLong(pinmodel->numbones);
 985         pheader->numscenes = loadmodel->zymnum_scenes = BigLong(pinmodel->numscenes);
 986         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
 987         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
 988         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
 989         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
 990         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
 991         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
 992         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
 993         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
 994         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
 995         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
 996         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
 997         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
 998         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
 999         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1000         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1001         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1002         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1003         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1004
1005         loadmodel->flags = 0; // there are no flags
1006         loadmodel->numframes = pheader->numscenes;
1007         loadmodel->synctype = ST_SYNC;
1008         //loadmodel->numtris = pheader->numtris;
1009         //loadmodel->numverts = 0;
1010
1011         {
1012                 unsigned int i;
1013                 float modelradius, corner[2];
1014                 // model bbox
1015                 modelradius = pheader->radius;
1016                 for (i = 0;i < 3;i++)
1017                 {
1018                         loadmodel->normalmins[i] = pheader->mins[i];
1019                         loadmodel->normalmaxs[i] = pheader->maxs[i];
1020                         loadmodel->rotatedmins[i] = -modelradius;
1021                         loadmodel->rotatedmaxs[i] = modelradius;
1022                 }
1023                 corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1024                 corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1025                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1026                 if (loadmodel->yawmaxs[0] > modelradius)
1027                         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1028                 loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1029                 loadmodel->yawmins[2] = loadmodel->normalmins[2];
1030                 loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1031                 loadmodel->radius = modelradius;
1032                 loadmodel->radius2 = modelradius * modelradius;
1033         }
1034
1035         {
1036                 // FIXME: add shaders, and make them switchable shader sets and...
1037                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
1038                 loadmodel->skinscenes[0].firstframe = 0;
1039                 loadmodel->skinscenes[0].framecount = 1;
1040                 loadmodel->skinscenes[0].loop = true;
1041                 loadmodel->skinscenes[0].framerate = 10;
1042                 loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
1043                 loadmodel->skinframes->base = NULL;
1044                 loadmodel->skinframes->fog = NULL;
1045                 loadmodel->skinframes->pants = NULL;
1046                 loadmodel->skinframes->shirt = NULL;
1047                 loadmodel->skinframes->glow = NULL;
1048                 loadmodel->skinframes->merged = NULL;
1049                 loadmodel->numskins = 1;
1050         }
1051
1052         // go through the lumps, swapping things
1053
1054         {
1055                 int i, numposes;
1056                 zymscene_t *scene;
1057         //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1058                 loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1059                 scene = (void *) (pheader->lump_scenes.start + pbase);
1060                 numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1061                 for (i = 0;i < pheader->numscenes;i++)
1062                 {
1063                         memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1064                         loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1065                         loadmodel->animscenes[i].framecount = BigLong(scene->length);
1066                         loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1067                         loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1068                         if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1069                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
1070                         if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1071                                 Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1072                         if (loadmodel->animscenes[i].framerate < 0)
1073                                 Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
1074                         scene++;
1075                 }
1076         }
1077
1078         {
1079                 int i;
1080                 float *poses;
1081         //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1082                 loadmodel->zymdata_poses = Mem_Alloc(loadmodel->mempool, pheader->lump_poses.length);
1083                 poses = (void *) (pheader->lump_poses.start + pbase);
1084                 for (i = 0;i < pheader->lump_poses.length / 4;i++)
1085                         loadmodel->zymdata_poses[i] = BigFloat(poses[i]);
1086         }
1087
1088         {
1089                 int i;
1090                 zymbone_t *bone;
1091         //      zymlump_t lump_bones; // zymbone_t bone[numbones];
1092                 loadmodel->zymdata_bones = Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(zymbone_t));
1093                 bone = (void *) (pheader->lump_bones.start + pbase);
1094                 for (i = 0;i < pheader->numbones;i++)
1095                 {
1096                         memcpy(loadmodel->zymdata_bones[i].name, bone[i].name, sizeof(bone[i].name));
1097                         loadmodel->zymdata_bones[i].flags = BigLong(bone[i].flags);
1098                         loadmodel->zymdata_bones[i].parent = BigLong(bone[i].parent);
1099                         if (loadmodel->zymdata_bones[i].parent >= i)
1100                                 Host_Error("Mod_LoadZymoticModel: bone[%i].parent >= %i in %s\n", i, i, loadmodel->name);
1101                 }
1102         }
1103
1104         {
1105                 int i, *bonecount;
1106         //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1107                 loadmodel->zymdata_vertbonecounts = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1108                 bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
1109                 for (i = 0;i < pheader->numverts;i++)
1110                 {
1111                         loadmodel->zymdata_vertbonecounts[i] = BigLong(bonecount[i]);
1112                         if (loadmodel->zymdata_vertbonecounts[i] < 1)
1113                                 Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
1114                 }
1115         }
1116
1117         {
1118                 int i;
1119                 zymvertex_t *vertdata;
1120         //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1121                 loadmodel->zymdata_verts = Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1122                 vertdata = (void *) (pheader->lump_verts.start + pbase);
1123                 for (i = 0;i < pheader->lump_verts.length / (int) sizeof(zymvertex_t);i++)
1124                 {
1125                         loadmodel->zymdata_verts[i].bonenum = BigLong(vertdata[i].bonenum);
1126                         loadmodel->zymdata_verts[i].origin[0] = BigFloat(vertdata[i].origin[0]);
1127                         loadmodel->zymdata_verts[i].origin[1] = BigFloat(vertdata[i].origin[1]);
1128                         loadmodel->zymdata_verts[i].origin[2] = BigFloat(vertdata[i].origin[2]);
1129                 }
1130         }
1131
1132         {
1133                 int i;
1134                 float *intexcoord, *outtexcoord;
1135         //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1136                 loadmodel->zymdata_texcoords = outtexcoord = Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(float[4]));
1137                 intexcoord = (void *) (pheader->lump_texcoords.start + pbase);
1138                 for (i = 0;i < pheader->numverts;i++)
1139                 {
1140                         outtexcoord[i*4+0] = BigFloat(intexcoord[i*2+0]);
1141                         // flip T coordinate for OpenGL
1142                         outtexcoord[i*4+1] = 1 - BigFloat(intexcoord[i*2+1]);
1143                 }
1144         }
1145
1146         {
1147                 int i, count, *renderlist, *renderlistend, *outrenderlist;
1148         //      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)
1149                 loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, pheader->lump_render.length);
1150                 // byteswap, validate, and swap winding order of tris
1151                 count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1152                 if (pheader->lump_render.length != count)
1153                         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);
1154                 outrenderlist = loadmodel->zymdata_renderlist = Mem_Alloc(loadmodel->mempool, count);
1155                 renderlist = (void *) (pheader->lump_render.start + pbase);
1156                 renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
1157                 for (i = 0;i < pheader->numshaders;i++)
1158                 {
1159                         if (renderlist >= renderlistend)
1160                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1161                         count = BigLong(*renderlist);renderlist++;
1162                         if (renderlist + count * 3 > renderlistend)
1163                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
1164                         *outrenderlist++ = count;
1165                         while (count--)
1166                         {
1167                                 outrenderlist[2] = BigLong(renderlist[0]);
1168                                 outrenderlist[1] = BigLong(renderlist[1]);
1169                                 outrenderlist[0] = BigLong(renderlist[2]);
1170                                 if ((unsigned int)outrenderlist[0] >= (unsigned int)pheader->numverts
1171                                  || (unsigned int)outrenderlist[1] >= (unsigned int)pheader->numverts
1172                                  || (unsigned int)outrenderlist[2] >= (unsigned int)pheader->numverts)
1173                                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
1174                                 renderlist += 3;
1175                                 outrenderlist += 3;
1176                         }
1177                 }
1178         }
1179
1180         {
1181                 int i;
1182                 char *shadername;
1183         //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1184                 loadmodel->zymdata_textures = Mem_Alloc(loadmodel->mempool, pheader->numshaders * sizeof(rtexture_t *));
1185                 shadername = (void *) (pheader->lump_shaders.start + pbase);
1186                 for (i = 0;i < pheader->numshaders;i++)
1187                         loadmodel->zymdata_textures[i] = loadtextureimage(loadmodel->texturepool, shadername + i * 32, 0, 0, true, TEXF_ALPHA | TEXF_PRECACHE | (r_mipskins.integer ? TEXF_MIPMAP : 0));
1188         }
1189
1190         {
1191         //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1192                 loadmodel->zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1193                 memcpy(loadmodel->zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1194         }
1195 }