2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
28 void Mod_AliasInit (void)
34 float aliasbboxmin[3], aliasbboxmax[3]; // LordHavoc: proper bounding box considerations
37 float vertst[MAXVERTS][2];
38 int vertusage[MAXVERTS];
39 int vertonseam[MAXVERTS];
40 int vertremap[MAXVERTS];
41 unsigned short temptris[MAXVERTS][3];
43 #define NUMVERTEXNORMALS 162
44 extern float r_avertexnormals[NUMVERTEXNORMALS][3];
45 void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivert2 *out)
49 for (i = 0;i < inverts;i++)
51 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
53 temp[0] = v[i].v[0] * scale[0] + translate[0];
54 temp[1] = v[i].v[1] * scale[1] + translate[1];
55 temp[2] = v[i].v[2] * scale[2] + translate[2];
56 // update bounding box
57 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
58 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
59 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
60 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
61 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
62 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
63 j = vertremap[i]; // not onseam
66 VectorCopy(v[i].v, out[j].v);
67 out[j].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
68 out[j].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
69 out[j].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
71 j = vertremap[i+inverts]; // onseam
74 VectorCopy(v[i].v, out[j].v);
75 out[j].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
76 out[j].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
77 out[j].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
87 void * Mod_LoadAliasFrame (void *pin, maliasframe_t *frame, maliashdr_t *mheader, int inverts, int outverts, trivert2 **posevert)
90 daliasframe_t *pdaliasframe;
92 pdaliasframe = (daliasframe_t *)pin;
94 strcpy(frame->name, pdaliasframe->name);
95 frame->start = posenum;
97 frame->rate = 10.0f; // unnecessary but...
99 pinframe = (trivertx_t *)(pdaliasframe + 1);
101 Mod_ConvertAliasVerts(inverts, mheader->scale, mheader->scale_origin, pinframe, *posevert);
102 *posevert += outverts;
107 return (void *)pinframe;
116 void *Mod_LoadAliasGroup (void *pin, maliasframe_t *frame, maliashdr_t *mheader, int inverts, int outverts, trivert2 **posevert)
122 numframes = LittleLong (((daliasgroup_t *)pin)->numframes);
124 strcpy(frame->name, "group");
125 frame->start = posenum;
126 frame->length = numframes;
127 interval = LittleFloat (((daliasinterval_t *)(((daliasgroup_t *)pin) + 1))->interval); // FIXME: support variable framerate groups?
128 if (interval < 0.01f)
129 Host_Error("Mod_LoadAliasGroup: invalid interval");
130 frame->rate = 1.0f / interval;
132 ptemp = (void *)(((daliasinterval_t *)(((daliasgroup_t *)pin) + 1)) + numframes);
134 for (i=0 ; i<numframes ; i++)
136 ((daliasframe_t *)ptemp)++;
137 Mod_ConvertAliasVerts(inverts, mheader->scale, mheader->scale_origin, ptemp, *posevert);
138 *posevert += outverts;
140 ptemp = (trivertx_t *)ptemp + inverts;
146 //=========================================================
152 Fill background pixels so mipmapping doesn't have haloes - Ed
161 // must be a power of 2
162 #define FLOODFILL_FIFO_SIZE 0x1000
163 #define FLOODFILL_FIFO_MASK (FLOODFILL_FIFO_SIZE - 1)
165 #define FLOODFILL_STEP( off, dx, dy ) \
167 if (pos[off] == fillcolor) \
170 fifo[inpt].x = x + (dx), fifo[inpt].y = y + (dy); \
171 inpt = (inpt + 1) & FLOODFILL_FIFO_MASK; \
173 else if (pos[off] != 255) fdc = pos[off]; \
176 void Mod_FloodFillSkin( byte *skin, int skinwidth, int skinheight )
178 byte fillcolor = *skin; // assume this is the pixel to fill
179 floodfill_t fifo[FLOODFILL_FIFO_SIZE];
180 int inpt = 0, outpt = 0;
181 int filledcolor = -1;
184 if (filledcolor == -1)
187 // attempt to find opaque black
188 for (i = 0; i < 256; ++i)
189 if (d_8to24table[i] == (255 << 0)) // alpha 1.0
196 // can't fill to filled color or to transparent color (used as visited marker)
197 if ((fillcolor == filledcolor) || (fillcolor == 255))
199 //printf( "not filling skin from %d to %d\n", fillcolor, filledcolor );
203 fifo[inpt].x = 0, fifo[inpt].y = 0;
204 inpt = (inpt + 1) & FLOODFILL_FIFO_MASK;
206 while (outpt != inpt)
208 int x = fifo[outpt].x, y = fifo[outpt].y;
209 int fdc = filledcolor;
210 byte *pos = &skin[x + skinwidth * y];
212 outpt = (outpt + 1) & FLOODFILL_FIFO_MASK;
214 if (x > 0) FLOODFILL_STEP( -1, -1, 0 );
215 if (x < skinwidth - 1) FLOODFILL_STEP( 1, 1, 0 );
216 if (y > 0) FLOODFILL_STEP( -skinwidth, 0, -1 );
217 if (y < skinheight - 1) FLOODFILL_STEP( skinwidth, 0, 1 );
218 skin[x + skinwidth * y] = fdc;
222 int GL_SkinSplitShirt(byte *in, byte *out, int width, int height, unsigned short bits, char *name)
224 int i, pixels, passed;
226 for (i = 0;i < 16;i++)
227 pixeltest[i] = (bits & (1 << i)) != 0;
228 pixels = width*height;
232 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
235 // turn to white while copying
236 if (*in >= 128 && *in < 224) // backwards ranges
237 *out = (*in & 15) ^ 15;
247 return GL_LoadTexture (name, width, height, out - width*height, true, false, 1);
252 int GL_SkinSplit(byte *in, byte *out, int width, int height, unsigned short bits, char *name)
254 int i, pixels, passed;
256 for (i = 0;i < 16;i++)
257 pixeltest[i] = (bits & (1 << i)) != 0;
258 pixels = width*height;
262 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
273 return GL_LoadTexture (name, width, height, out - width*height, true, false, 1);
283 void *Mod_LoadAllSkins (int numskins, daliasskintype_t *pskintype, int width, int height)
289 daliasskingroup_t *pinskingroup;
291 daliasskininterval_t *pinskinintervals;
292 int skinranges, skincount, *skintexnum, *skinrange, skinnum;
294 byte *skintemp = NULL;
296 skin = (byte *)(pskintype + 1);
298 if (numskins < 1 || numskins > MAX_SKINS)
299 Host_Error ("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
302 skintemp = malloc(s);
304 // LordHavoc: skim the data, measure the number of skins and number of groups
305 skinranges = numskins;
308 for (i = 0;i < numskins;i++)
311 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
314 (byte *)pskintype += s;
318 groupskins = LittleLong (((daliasskingroup_t *)pskintype)->numskins);
319 skincount += groupskins;
320 (byte *)pskintype += (s + sizeof(daliasskininterval_t)) * groupskins + sizeof(daliasskingroup_t);
325 skinrange = loadmodel->skinanimrange;
326 skintexnum = loadmodel->skinanim;
327 // skinrange = Hunk_AllocName (sizeof(int) * (skinranges + skincount), loadname);
328 // skintexnum = skinrange + skinranges * 2;
329 // loadmodel->skinanimrange = (int) skinrange - (int) pheader;
330 // loadmodel->skinanim = (int) skintexnum - (int) pheader;
332 for (i = 0;i < numskins;i++)
334 *skinrange++ = skinnum; // start of the range
336 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
338 *skinrange++ = 1; // single skin
340 sprintf (name, "%s_%i", loadmodel->name, i);
342 Mod_FloodFillSkin( skin, width, height );
343 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FBD, va("%s_normal", name)); // normal (no special colors)
344 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0040, va("%s_pants", name)); // pants
345 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0002, va("%s_shirt", name)); // shirt
346 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0xC000, va("%s_glow", name)); // glow
347 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FFF, va("%s_body", name)); // body (normal + pants + shirt, but not glow)
348 pskintype = (daliasskintype_t *)((byte *)(pskintype) + s);
352 // animating skin group. yuck.
353 pinskingroup = (daliasskingroup_t *)pskintype;
354 groupskins = LittleLong (pinskingroup->numskins);
355 pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1);
357 pskintype = (void *)(pinskinintervals + groupskins);
359 *skinrange++ = groupskins; // number of skins
360 skinnum += groupskins;
361 for (j = 0;j < groupskins;j++)
363 sprintf (name, "%s_%i_%i", loadmodel->name, i,j);
365 Mod_FloodFillSkin( skin, width, height );
366 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FBD, va("%s_normal", name)); // normal (no special colors)
367 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0040, va("%s_pants", name)); // pants
368 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0002, va("%s_shirt", name)); // shirt
369 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0xC000, va("%s_glow", name)); // glow
370 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FFF, va("%s_body", name)); // body (normal + pants + shirt, but not glow)
371 pskintype = (daliasskintype_t *)((byte *)(pskintype) + s);
375 loadmodel->numskins = numskins;
378 return (void *)pskintype;
381 void *Mod_SkipAllSkins (int numskins, daliasskintype_t *pskintype, int skinsize)
384 for (i = 0;i < numskins;i++)
387 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
388 (byte *)pskintype += skinsize;
390 (byte *)pskintype += (skinsize + sizeof(daliasskininterval_t)) * LittleLong (((daliasskingroup_t *)pskintype)->numskins) + sizeof(daliasskingroup_t);
395 //=========================================================================
397 //void GL_MakeAliasModelDisplayLists (model_t *m, aliashdr_t *hdr);
404 #define BOUNDI(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid VALUE (%d exceeds %d - %d)\n", mod->name, VALUE, MIN, MAX);
405 #define BOUNDF(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid VALUE (%f exceeds %f - %f)\n", mod->name, VALUE, MIN, MAX);
406 void Mod_LoadAliasModel (model_t *mod, void *buffer)
408 int i, j, version, numframes, start, end, total, numverts, numtris, numposes, numskins, skinwidth, skinheight, f, totalverts;
410 stvert_t *pinstverts;
411 dtriangle_t *pintriangles;
412 daliasframetype_t *pframetype;
413 daliasskintype_t *pskintype;
414 float *pouttexcoords, scales, scalet;
415 maliashdr_t *mheader;
416 unsigned short *pouttris;
417 maliasframe_t *frame;
420 start = Hunk_LowMark ();
422 pinmodel = (mdl_t *)buffer;
424 version = LittleLong (pinmodel->version);
425 if (version != ALIAS_VERSION)
426 Host_Error ("%s has wrong version number (%i should be %i)",
427 mod->name, version, ALIAS_VERSION);
429 mod->type = ALIASTYPE_MDL;
431 numframes = LittleLong(pinmodel->numframes);
432 BOUNDI(numframes,0,65536);
433 numverts = LittleLong(pinmodel->numverts);
434 BOUNDI(numverts,0,MAXALIASVERTS);
435 numtris = LittleLong(pinmodel->numtris);
436 BOUNDI(numtris,0,65536);
437 numskins = LittleLong(pinmodel->numskins);
438 BOUNDI(numskins,0,256);
439 skinwidth = LittleLong (pinmodel->skinwidth);
440 BOUNDI(skinwidth,0,4096);
441 skinheight = LittleLong (pinmodel->skinheight);
442 BOUNDI(skinheight,0,1024);
444 pskintype = (daliasskintype_t *)&pinmodel[1];
445 pinstverts = (stvert_t *)Mod_SkipAllSkins (numskins, pskintype, skinwidth * skinheight);
446 pintriangles = (dtriangle_t *)&pinstverts[numverts];
447 pframetype = (daliasframetype_t *)&pintriangles[numtris];
450 for (i=0 ; i<numframes ; i++)
452 if ((aliasframetype_t) LittleLong (pframetype->type) == ALIAS_SINGLE)
455 pframetype = (daliasframetype_t *)((int)pframetype + sizeof(daliasframetype_t) + (sizeof(daliasframe_t) + sizeof(trivertx_t) * numverts) );
459 f = LittleLong (((daliasgroup_t *)((int)pframetype + sizeof(daliasframetype_t)))->numframes);
461 pframetype = (daliasframetype_t *)((int)pframetype + sizeof(daliasframetype_t) + sizeof(daliasgroup_t) + (sizeof(daliasframe_t) + sizeof(daliasinterval_t) + sizeof(trivertx_t) * numverts) * f);
466 mheader = Hunk_AllocName (sizeof(maliashdr_t), loadname);
467 mod->flags = LittleLong (pinmodel->flags);
468 mod->type = mod_alias;
469 // endian-adjust and copy the data, starting with the alias model header
470 mheader->numverts = numverts;
471 mod->numtris = mheader->numtris = numtris;
472 mod->numframes = mheader->numframes = numframes;
473 mod->synctype = LittleLong (pinmodel->synctype);
474 BOUNDI(mod->synctype,0,2);
476 for (i=0 ; i<3 ; i++)
478 mheader->scale[i] = LittleFloat (pinmodel->scale[i]);
479 BOUNDF(mheader->scale[i],0,65536);
480 mheader->scale_origin[i] = LittleFloat (pinmodel->scale_origin[i]);
481 BOUNDF(mheader->scale_origin[i],-65536,65536);
485 pskintype = (daliasskintype_t *)&pinmodel[1];
486 pskintype = Mod_LoadAllSkins(numskins, pskintype, skinwidth, skinheight);
488 // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
489 pinstverts = (stvert_t *)pskintype;
491 // LordHavoc: byteswap and convert stvert data
492 scales = 1.0 / skinwidth;
493 scalet = 1.0 / skinheight;
494 for (i = 0;i < numverts;i++)
496 vertonseam[i] = LittleLong(pinstverts[i].onseam);
497 vertst[i][0] = LittleLong(pinstverts[i].s) * scales;
498 vertst[i][1] = LittleLong(pinstverts[i].t) * scalet;
499 vertst[i+numverts][0] = vertst[i][0] + 0.5;
500 vertst[i+numverts][1] = vertst[i][1];
502 vertusage[i+numverts] = 0;
505 // load triangle data
506 pouttris = Hunk_AllocName(sizeof(unsigned short[3]) * numtris, loadname);
507 mheader->tridata = (int) pouttris - (int) mheader;
508 pintriangles = (dtriangle_t *)&pinstverts[mheader->numverts];
510 // count the vertices used
511 for (i = 0;i < numverts*2;i++)
513 for (i = 0;i < numtris;i++)
515 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
516 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
517 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
518 if (!LittleLong(pintriangles[i].facesfront)) // backface
520 if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
521 if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
522 if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
524 vertusage[temptris[i][0]]++;
525 vertusage[temptris[i][1]]++;
526 vertusage[temptris[i][2]]++;
528 // build remapping table and compact array
530 for (i = 0;i < numverts*2;i++)
534 vertremap[i] = totalverts;
535 vertst[totalverts][0] = vertst[i][0];
536 vertst[totalverts][1] = vertst[i][1];
540 vertremap[i] = -1; // not used at all
542 mheader->numverts = totalverts;
543 // remap the triangle references
544 for (i = 0;i < numtris;i++)
546 *pouttris++ = vertremap[temptris[i][0]];
547 *pouttris++ = vertremap[temptris[i][1]];
548 *pouttris++ = vertremap[temptris[i][2]];
550 // store the texture coordinates
551 pouttexcoords = Hunk_AllocName(sizeof(float[2]) * totalverts, loadname);
552 mheader->texdata = (int) pouttexcoords - (int) mheader;
553 for (i = 0;i < totalverts;i++)
555 *pouttexcoords++ = vertst[i][0];
556 *pouttexcoords++ = vertst[i][1];
561 frame = Hunk_AllocName(sizeof(maliasframe_t) * numframes, loadname);
562 mheader->framedata = (int) frame - (int) mheader;
563 posevert = Hunk_AllocName(sizeof(trivert2) * numposes * totalverts, loadname);
564 mheader->posedata = (int) posevert - (int) mheader;
565 pframetype = (daliasframetype_t *)&pintriangles[numtris];
567 // LordHavoc: doing proper bbox for model
568 aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
569 aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
571 for (i=0 ; i<numframes ; i++)
573 if ((aliasframetype_t) LittleLong (pframetype->type) == ALIAS_SINGLE)
574 pframetype = (daliasframetype_t *) Mod_LoadAliasFrame (pframetype + 1, frame++, mheader, numverts, totalverts, &posevert);
576 pframetype = (daliasframetype_t *) Mod_LoadAliasGroup (pframetype + 1, frame++, mheader, numverts, totalverts, &posevert);
579 // LordHavoc: fixed model bbox - was //FIXME: do this right
580 //mod->mins[0] = mod->mins[1] = mod->mins[2] = -16;
581 //mod->maxs[0] = mod->maxs[1] = mod->maxs[2] = 16;
582 for (j = 0;j < 3;j++)
584 mod->mins[j] = aliasbboxmin[j];
585 mod->maxs[j] = aliasbboxmax[j];
588 // move the complete, relocatable alias model to the cache
589 end = Hunk_LowMark ();
592 Cache_Alloc (&mod->cache, total, loadname);
593 if (!mod->cache.data)
595 memcpy (mod->cache.data, mheader, total);
597 Hunk_FreeToLowMark (start);
600 void Mod_ConvertQ2AliasVerts (int numverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivert2 *out)
604 for (i = 0;i < numverts;i++)
606 VectorCopy(v[i].v, out[i].v);
607 temp[0] = v[i].v[0] * scale[0] + translate[0];
608 temp[1] = v[i].v[1] * scale[1] + translate[1];
609 temp[2] = v[i].v[2] * scale[2] + translate[2];
610 // update bounding box
611 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
612 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
613 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
614 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
615 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
616 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
617 out[i].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
618 out[i].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
619 out[i].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
629 } tempvert[MD2MAX_VERTS];
631 // decompress vertices
632 for (i = 0;i < numverts;i++)
634 VectorCopy(v[i].v, out[i].v);
635 tempvert[i].v[0] = v[i].v[0] * scale[0] + translate[0];
636 tempvert[i].v[1] = v[i].v[1] * scale[1] + translate[1];
637 tempvert[i].v[2] = v[i].v[2] * scale[2] + translate[2];
638 tempvert[i].normal[0] = tempvert[i].normal[1] = tempvert[i].normal[2] = 0;
639 tempvert[i].count = 0;
640 // update bounding box
641 if (tempvert[i].v[0] < aliasbboxmin[0]) aliasbboxmin[0] = tempvert[i].v[0];
642 if (tempvert[i].v[1] < aliasbboxmin[1]) aliasbboxmin[1] = tempvert[i].v[1];
643 if (tempvert[i].v[2] < aliasbboxmin[2]) aliasbboxmin[2] = tempvert[i].v[2];
644 if (tempvert[i].v[0] > aliasbboxmax[0]) aliasbboxmax[0] = tempvert[i].v[0];
645 if (tempvert[i].v[1] > aliasbboxmax[1]) aliasbboxmax[1] = tempvert[i].v[1];
646 if (tempvert[i].v[2] > aliasbboxmax[2]) aliasbboxmax[2] = tempvert[i].v[2];
648 // calculate surface normals
650 for (i = 0;i < numtris;i++)
652 VectorSubtract(tempvert[tris->v[0]].v, tempvert[tris->v[1]].v, t1);
653 VectorSubtract(tempvert[tris->v[2]].v, tempvert[tris->v[1]].v, t2);
654 CrossProduct(t1, t2, tris->normal);
655 VectorNormalize(tris->normal);
656 // add surface normal to vertices
657 for (j = 0;j < 3;j++)
659 VectorAdd(tris->normal, tempvert[tris->v[j]].normal, tempvert[tris->v[j]].normal);
660 tempvert[tris->v[j]].count++;
664 // average normals and write out 1.7bit format
665 for (i = 0;i < pheader->numtris;i++)
667 VectorNormalize(tempvert[i].normal);
668 out[i].n[0] = (signed char) (tempvert[i].normal[0] * 127.0);
669 out[i].n[1] = (signed char) (tempvert[i].normal[1] * 127.0);
670 out[i].n[2] = (signed char) (tempvert[i].normal[2] * 127.0);
680 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
682 int i, j, version, size, *pinglcmd, *poutglcmd, start, end, total, framesize;
685 md2triangle_t *pintriangles, *pouttriangles;
686 md2frame_t *pinframe;
687 md2memframe_t *poutframe;
691 start = Hunk_LowMark ();
694 // temptris = malloc(sizeof(temptris_t) * MD2MAX_TRIANGLES);
696 pinmodel = (md2_t *)buffer;
698 version = LittleLong (pinmodel->version);
699 if (version != MD2ALIAS_VERSION)
700 Host_Error ("%s has wrong version number (%i should be %i)",
701 mod->name, version, MD2ALIAS_VERSION);
703 mod->type = mod_alias;
704 mod->aliastype = ALIASTYPE_MD2;
706 framesize = sizeof(md2memframesize_t) + LittleLong(pinmodel->num_xyz) * sizeof(trivert2);
707 // LordHavoc: calculate size for in memory version
708 size = sizeof(md2mem_t)
709 + LittleLong(pinmodel->num_st) * sizeof(md2stvert_t)
710 + LittleLong(pinmodel->num_tris) * sizeof(md2triangle_t)
711 + LittleLong(pinmodel->num_frames) * framesize
712 + LittleLong(pinmodel->num_glcmds) * sizeof(int);
713 if (size <= 0 || size >= MD2MAX_SIZE)
714 Host_Error ("%s is not a valid model", mod->name);
715 pheader = Hunk_AllocName (size, loadname);
717 mod->flags = 0; // there are no MD2 flags
718 mod->numframes = LittleLong(pinmodel->num_frames);
719 mod->synctype = ST_RAND;
720 mod->numtris = LittleLong(pinmodel->num_tris); // LordHavoc: to simplify renderer decisions
722 if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= LittleLong(pinmodel->ofs_end)))
723 Host_Error ("%s is not a valid model", mod->name);
724 if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= LittleLong(pinmodel->ofs_end))
725 Host_Error ("%s is not a valid model", mod->name);
726 if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= LittleLong(pinmodel->ofs_end))
727 Host_Error ("%s is not a valid model", mod->name);
728 if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= LittleLong(pinmodel->ofs_end))
729 Host_Error ("%s is not a valid model", mod->name);
730 if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= LittleLong(pinmodel->ofs_end))
731 Host_Error ("%s is not a valid model", mod->name);
733 if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
734 Host_Error ("%s has invalid number of triangles: %i", mod->name, LittleLong(pinmodel->num_tris));
735 if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
736 Host_Error ("%s has invalid number of vertices: %i", mod->name, LittleLong(pinmodel->num_xyz));
737 if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
738 Host_Error ("%s has invalid number of frames: %i", mod->name, LittleLong(pinmodel->num_frames));
739 if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MD2MAX_SKINS)
740 Host_Error ("%s has invalid number of skins: %i", mod->name, LittleLong(pinmodel->num_skins));
742 pheader->framesize = framesize;
743 pheader->num_skins = LittleLong(pinmodel->num_skins);
744 pheader->num_xyz = LittleLong(pinmodel->num_xyz);
745 pheader->num_st = LittleLong(pinmodel->num_st);
746 pheader->num_tris = LittleLong(pinmodel->num_tris);
747 pheader->num_frames = LittleLong(pinmodel->num_frames);
748 pheader->num_glcmds = LittleLong(pinmodel->num_glcmds);
751 if (pheader->num_skins)
753 int *skin, *skinrange;
754 skinrange = loadmodel->skinanimrange;
755 skin = loadmodel->skinanim;
756 // skinrange = Hunk_AllocName (sizeof(int) * (pheader->num_skins * 2), loadname);
757 // skin = skinrange + pheader->num_skins * 2;
758 // loadmodel->skinanimrange = (int) skinrange - (int) pheader;
759 // loadmodel->skinanim = (int) skin - (int) pheader;
760 pinskins = (void*)((int) pinmodel + LittleLong(pinmodel->ofs_skins));
761 for (i = 0;i < pheader->num_skins;i++)
765 *skin++ = loadtextureimage (pinskins, 0, 0, true, true);
766 *skin++ = 0; // the extra 4 layers are currently unused
770 pinskins += MD2MAX_SKINNAME;
773 loadmodel->numskins = pheader->num_skins;
776 pintriangles = (void*)((int) pinmodel + LittleLong(pinmodel->ofs_tris));
777 pouttriangles = (void*)&pheader[1];
778 pheader->ofs_tris = (int) pouttriangles - (int) pheader;
780 // swap the triangle list
781 for (i=0 ; i<pheader->num_tris ; i++)
783 for (j=0 ; j<3 ; j++)
785 temptris[i][j] = pouttriangles->index_xyz[j] = LittleShort (pintriangles->index_xyz[j]);
786 pouttriangles->index_st[j] = LittleShort (pintriangles->index_st[j]);
787 if (pouttriangles->index_xyz[j] >= pheader->num_xyz)
788 Host_Error ("%s has invalid vertex indices", mod->name);
789 if (pouttriangles->index_st[j] >= pheader->num_st)
790 Host_Error ("%s has invalid vertex indices", mod->name);
796 // LordHavoc: doing proper bbox for model
797 aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
798 aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
801 pinframe = (void*) ((int) pinmodel + LittleLong(pinmodel->ofs_frames));
802 poutframe = (void*) pouttriangles;
803 pheader->ofs_frames = (int) poutframe - (int) pheader;
804 for (i=0 ; i<pheader->num_frames ; i++)
806 for (j = 0;j < 3;j++)
808 poutframe->scale[j] = LittleFloat(pinframe->scale[j]);
809 poutframe->translate[j] = LittleFloat(pinframe->translate[j]);
811 Mod_ConvertQ2AliasVerts (pheader->num_xyz, poutframe->scale, poutframe->translate, &pinframe->verts[0], &poutframe->verts[0]);
812 pinframe = (void*) &pinframe->verts[j];
813 poutframe = (void*) &poutframe->verts[j];
816 // LordHavoc: model bbox
817 for (j = 0;j < 3;j++)
819 mod->mins[j] = aliasbboxmin[j];
820 mod->maxs[j] = aliasbboxmax[j];
823 // load the draw list
824 pinglcmd = (void*) ((int) pinmodel + LittleLong(pinmodel->ofs_glcmds));
825 poutglcmd = (void*) poutframe;
826 pheader->ofs_glcmds = (int) poutglcmd - (int) pheader;
827 for (i = 0;i < pheader->num_glcmds;i++)
828 *poutglcmd++ = LittleLong(*pinglcmd++);
830 // move the complete, relocatable alias model to the cache
831 end = Hunk_LowMark ();
834 Cache_Alloc (&mod->cache, total, loadname);
835 if (!mod->cache.data)
837 memcpy (mod->cache.data, pheader, total);
839 Hunk_FreeToLowMark (start);