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)
32 //aliashdr_t *pheader;
39 //temptris_t *temptris;
40 //stvert_t stverts[MAXALIASVERTS];
41 //mtriangle_t triangles[MAXALIASTRIS];
43 // a pose is a single set of vertexes. a frame may be
44 // an animating sequence of poses
45 //trivertx_t *poseverts[MAXALIASFRAMES];
48 byte **player_8bit_texels_tbl;
49 byte *player_8bit_texels;
51 float aliasbboxmin[3], aliasbboxmax[3]; // LordHavoc: proper bounding box considerations
54 float vertst[MAXVERTS][2];
55 int vertusage[MAXVERTS];
56 int vertonseam[MAXVERTS];
57 int vertremap[MAXVERTS];
58 unsigned short temptris[MAXVERTS][3];
60 #define NUMVERTEXNORMALS 162
61 extern float r_avertexnormals[NUMVERTEXNORMALS][3];
62 void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivert2 *out)
66 for (i = 0;i < inverts;i++)
68 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
70 temp[0] = v[i].v[0] * scale[0] + translate[0];
71 temp[1] = v[i].v[1] * scale[1] + translate[1];
72 temp[2] = v[i].v[2] * scale[2] + translate[2];
73 // update bounding box
74 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
75 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
76 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
77 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
78 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
79 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
80 j = vertremap[i]; // not onseam
83 VectorCopy(v[i].v, out[j].v);
84 out[j].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
85 out[j].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
86 out[j].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
88 j = vertremap[i+inverts]; // onseam
91 VectorCopy(v[i].v, out[j].v);
92 out[j].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
93 out[j].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
94 out[j].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
104 void * Mod_LoadAliasFrame (void *pin, maliasframe_t *frame, maliashdr_t *mheader, int inverts, int outverts, trivert2 **posevert)
106 trivertx_t *pinframe;
107 daliasframe_t *pdaliasframe;
109 pdaliasframe = (daliasframe_t *)pin;
111 strcpy(frame->name, pdaliasframe->name);
112 frame->start = posenum;
114 frame->rate = 10.0f; // unnecessary but...
116 pinframe = (trivertx_t *)(pdaliasframe + 1);
118 Mod_ConvertAliasVerts(inverts, mheader->scale, mheader->scale_origin, pinframe, *posevert);
119 *posevert += outverts;
124 return (void *)pinframe;
133 void *Mod_LoadAliasGroup (void *pin, maliasframe_t *frame, maliashdr_t *mheader, int inverts, int outverts, trivert2 **posevert)
139 numframes = LittleLong (((daliasgroup_t *)pin)->numframes);
141 strcpy(frame->name, "group");
142 frame->start = posenum;
143 frame->length = numframes;
144 interval = LittleFloat (((daliasinterval_t *)(((daliasgroup_t *)pin) + 1))->interval); // FIXME: support variable framerate groups?
145 if (interval < 0.01f)
146 Host_Error("Mod_LoadAliasGroup: invalid interval");
147 frame->rate = 1.0f / interval;
149 ptemp = (void *)(((daliasinterval_t *)(((daliasgroup_t *)pin) + 1)) + numframes);
151 for (i=0 ; i<numframes ; i++)
153 ((daliasframe_t *)ptemp)++;
154 Mod_ConvertAliasVerts(inverts, mheader->scale, mheader->scale_origin, ptemp, *posevert);
155 *posevert += outverts;
157 ptemp = (trivertx_t *)ptemp + inverts;
163 //=========================================================
169 Fill background pixels so mipmapping doesn't have haloes - Ed
178 extern unsigned d_8to24table[];
180 // must be a power of 2
181 #define FLOODFILL_FIFO_SIZE 0x1000
182 #define FLOODFILL_FIFO_MASK (FLOODFILL_FIFO_SIZE - 1)
184 #define FLOODFILL_STEP( off, dx, dy ) \
186 if (pos[off] == fillcolor) \
189 fifo[inpt].x = x + (dx), fifo[inpt].y = y + (dy); \
190 inpt = (inpt + 1) & FLOODFILL_FIFO_MASK; \
192 else if (pos[off] != 255) fdc = pos[off]; \
195 void Mod_FloodFillSkin( byte *skin, int skinwidth, int skinheight )
197 byte fillcolor = *skin; // assume this is the pixel to fill
198 floodfill_t fifo[FLOODFILL_FIFO_SIZE];
199 int inpt = 0, outpt = 0;
200 int filledcolor = -1;
203 if (filledcolor == -1)
206 // attempt to find opaque black
207 for (i = 0; i < 256; ++i)
208 if (d_8to24table[i] == (255 << 0)) // alpha 1.0
215 // can't fill to filled color or to transparent color (used as visited marker)
216 if ((fillcolor == filledcolor) || (fillcolor == 255))
218 //printf( "not filling skin from %d to %d\n", fillcolor, filledcolor );
222 fifo[inpt].x = 0, fifo[inpt].y = 0;
223 inpt = (inpt + 1) & FLOODFILL_FIFO_MASK;
225 while (outpt != inpt)
227 int x = fifo[outpt].x, y = fifo[outpt].y;
228 int fdc = filledcolor;
229 byte *pos = &skin[x + skinwidth * y];
231 outpt = (outpt + 1) & FLOODFILL_FIFO_MASK;
233 if (x > 0) FLOODFILL_STEP( -1, -1, 0 );
234 if (x < skinwidth - 1) FLOODFILL_STEP( 1, 1, 0 );
235 if (y > 0) FLOODFILL_STEP( -skinwidth, 0, -1 );
236 if (y < skinheight - 1) FLOODFILL_STEP( skinwidth, 0, 1 );
237 skin[x + skinwidth * y] = fdc;
241 int GL_SkinSplitShirt(byte *in, byte *out, int width, int height, unsigned short bits, char *name)
243 int i, pixels, passed;
245 for (i = 0;i < 16;i++)
246 pixeltest[i] = (bits & (1 << i)) != 0;
247 pixels = width*height;
251 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
254 // turn to white while copying
255 if (*in >= 128 && *in < 224) // backwards ranges
256 *out = (*in & 15) ^ 15;
266 return GL_LoadTexture (name, width, height, out - width*height, true, false, 1);
271 int GL_SkinSplit(byte *in, byte *out, int width, int height, unsigned short bits, char *name)
273 int i, pixels, passed;
275 for (i = 0;i < 16;i++)
276 pixeltest[i] = (bits & (1 << i)) != 0;
277 pixels = width*height;
281 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
292 return GL_LoadTexture (name, width, height, out - width*height, true, false, 1);
302 void *Mod_LoadAllSkins (int numskins, daliasskintype_t *pskintype, int width, int height)
308 daliasskingroup_t *pinskingroup;
310 daliasskininterval_t *pinskinintervals;
311 int skinranges, skincount, *skintexnum, *skinrange, skinnum;
313 byte *skintemp = NULL;
315 skin = (byte *)(pskintype + 1);
317 if (numskins < 1 || numskins > MAX_SKINS)
318 Host_Error ("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
321 skintemp = malloc(s);
323 // LordHavoc: skim the data, measure the number of skins and number of groups
324 skinranges = numskins;
327 for (i = 0;i < numskins;i++)
330 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
333 (byte *)pskintype += s;
337 groupskins = LittleLong (((daliasskingroup_t *)pskintype)->numskins);
338 skincount += groupskins;
339 (byte *)pskintype += (s + sizeof(daliasskininterval_t)) * groupskins + sizeof(daliasskingroup_t);
344 skinrange = loadmodel->skinanimrange;
345 skintexnum = loadmodel->skinanim;
346 // skinrange = Hunk_AllocName (sizeof(int) * (skinranges + skincount), loadname);
347 // skintexnum = skinrange + skinranges * 2;
348 // loadmodel->skinanimrange = (int) skinrange - (int) pheader;
349 // loadmodel->skinanim = (int) skintexnum - (int) pheader;
351 for (i = 0;i < numskins;i++)
353 *skinrange++ = skinnum; // start of the range
355 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
357 *skinrange++ = 1; // single skin
359 sprintf (name, "%s_%i", loadmodel->name, i);
361 Mod_FloodFillSkin( skin, width, height );
362 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FBD, va("%s_normal", name)); // normal (no special colors)
363 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0040, va("%s_pants", name)); // pants
364 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0002, va("%s_shirt", name)); // shirt
365 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0xC000, va("%s_glow", name)); // glow
366 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FFF, va("%s_body", name)); // body (normal + pants + shirt, but not glow)
367 pskintype = (daliasskintype_t *)((byte *)(pskintype) + s);
371 // animating skin group. yuck.
372 pinskingroup = (daliasskingroup_t *)pskintype;
373 groupskins = LittleLong (pinskingroup->numskins);
374 pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1);
376 pskintype = (void *)(pinskinintervals + groupskins);
378 *skinrange++ = groupskins; // number of skins
379 skinnum += groupskins;
380 for (j = 0;j < groupskins;j++)
382 sprintf (name, "%s_%i_%i", loadmodel->name, i,j);
384 Mod_FloodFillSkin( skin, width, height );
385 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FBD, va("%s_normal", name)); // normal (no special colors)
386 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0040, va("%s_pants", name)); // pants
387 *skintexnum++ = GL_SkinSplitShirt((byte *)pskintype, skintemp, width, height, 0x0002, va("%s_shirt", name)); // shirt
388 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0xC000, va("%s_glow", name)); // glow
389 *skintexnum++ = GL_SkinSplit((byte *)pskintype, skintemp, width, height, 0x3FFF, va("%s_body", name)); // body (normal + pants + shirt, but not glow)
390 pskintype = (daliasskintype_t *)((byte *)(pskintype) + s);
394 loadmodel->numskins = numskins;
397 return (void *)pskintype;
400 void *Mod_SkipAllSkins (int numskins, daliasskintype_t *pskintype, int skinsize)
403 for (i = 0;i < numskins;i++)
406 if (pskintype[-1].type == ALIAS_SKIN_SINGLE)
407 (byte *)pskintype += skinsize;
409 (byte *)pskintype += (skinsize + sizeof(daliasskininterval_t)) * LittleLong (((daliasskingroup_t *)pskintype)->numskins) + sizeof(daliasskingroup_t);
414 //=========================================================================
416 //void GL_MakeAliasModelDisplayLists (model_t *m, aliashdr_t *hdr);
423 #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);
424 #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);
425 void Mod_LoadAliasModel (model_t *mod, void *buffer)
427 int i, j, version, numframes, start, end, total, numverts, numtris, numposes, numskins, skinwidth, skinheight, f, totalverts;
429 stvert_t *pinstverts;
430 dtriangle_t *pintriangles;
431 daliasframetype_t *pframetype;
432 daliasskintype_t *pskintype;
433 float *pouttexcoords, scales, scalet;
434 maliashdr_t *mheader;
435 unsigned short *pouttris;
436 maliasframe_t *frame;
439 start = Hunk_LowMark ();
441 pinmodel = (mdl_t *)buffer;
443 version = LittleLong (pinmodel->version);
444 if (version != ALIAS_VERSION)
445 Host_Error ("%s has wrong version number (%i should be %i)",
446 mod->name, version, ALIAS_VERSION);
448 mod->type = ALIASTYPE_MDL;
450 numframes = LittleLong(pinmodel->numframes);
451 BOUNDI(numframes,0,65536);
452 numverts = LittleLong(pinmodel->numverts);
453 BOUNDI(numverts,0,MAXALIASVERTS);
454 numtris = LittleLong(pinmodel->numtris);
455 BOUNDI(numtris,0,65536);
456 numskins = LittleLong(pinmodel->numskins);
457 BOUNDI(numskins,0,256);
458 skinwidth = LittleLong (pinmodel->skinwidth);
459 BOUNDI(skinwidth,0,4096);
460 skinheight = LittleLong (pinmodel->skinheight);
461 BOUNDI(skinheight,0,1024);
463 pskintype = (daliasskintype_t *)&pinmodel[1];
464 pinstverts = (stvert_t *)Mod_SkipAllSkins (numskins, pskintype, skinwidth * skinheight);
465 pintriangles = (dtriangle_t *)&pinstverts[numverts];
466 pframetype = (daliasframetype_t *)&pintriangles[numtris];
469 for (i=0 ; i<numframes ; i++)
471 if ((aliasframetype_t) LittleLong (pframetype->type) == ALIAS_SINGLE)
474 pframetype = (daliasframetype_t *)((int)pframetype + sizeof(daliasframetype_t) + (sizeof(daliasframe_t) + sizeof(trivertx_t) * numverts) );
478 f = LittleLong (((daliasgroup_t *)((int)pframetype + sizeof(daliasframetype_t)))->numframes);
480 pframetype = (daliasframetype_t *)((int)pframetype + sizeof(daliasframetype_t) + sizeof(daliasgroup_t) + (sizeof(daliasframe_t) + sizeof(daliasinterval_t) + sizeof(trivertx_t) * numverts) * f);
485 mheader = Hunk_AllocName (sizeof(maliashdr_t), loadname);
486 mod->flags = LittleLong (pinmodel->flags);
487 mod->type = mod_alias;
488 // endian-adjust and copy the data, starting with the alias model header
489 mheader->numverts = numverts;
490 mod->numtris = mheader->numtris = numtris;
491 mod->numframes = mheader->numframes = numframes;
492 mod->synctype = LittleLong (pinmodel->synctype);
493 BOUNDI(mod->synctype,0,2);
495 for (i=0 ; i<3 ; i++)
497 mheader->scale[i] = LittleFloat (pinmodel->scale[i]);
498 BOUNDF(mheader->scale[i],0,65536);
499 mheader->scale_origin[i] = LittleFloat (pinmodel->scale_origin[i]);
500 BOUNDF(mheader->scale_origin[i],-65536,65536);
504 pskintype = (daliasskintype_t *)&pinmodel[1];
505 pskintype = Mod_LoadAllSkins(numskins, pskintype, skinwidth, skinheight);
507 // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
508 pinstverts = (stvert_t *)pskintype;
510 // LordHavoc: byteswap and convert stvert data
511 scales = 1.0 / skinwidth;
512 scalet = 1.0 / skinheight;
513 for (i = 0;i < numverts;i++)
515 vertonseam[i] = LittleLong(pinstverts[i].onseam);
516 vertst[i][0] = LittleLong(pinstverts[i].s) * scales;
517 vertst[i][1] = LittleLong(pinstverts[i].t) * scalet;
518 vertst[i+numverts][0] = vertst[i][0] + 0.5;
519 vertst[i+numverts][1] = vertst[i][1];
521 vertusage[i+numverts] = 0;
524 // load triangle data
525 pouttris = Hunk_AllocName(sizeof(unsigned short[3]) * numtris, loadname);
526 mheader->tridata = (int) pouttris - (int) mheader;
527 pintriangles = (dtriangle_t *)&pinstverts[mheader->numverts];
529 // count the vertices used
530 for (i = 0;i < numverts*2;i++)
532 for (i = 0;i < numtris;i++)
534 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
535 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
536 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
537 if (!LittleLong(pintriangles[i].facesfront)) // backface
539 if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
540 if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
541 if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
543 vertusage[temptris[i][0]]++;
544 vertusage[temptris[i][1]]++;
545 vertusage[temptris[i][2]]++;
547 // build remapping table and compact array
549 for (i = 0;i < numverts*2;i++)
553 vertremap[i] = totalverts;
554 vertst[totalverts][0] = vertst[i][0];
555 vertst[totalverts][1] = vertst[i][1];
559 vertremap[i] = -1; // not used at all
561 mheader->numverts = totalverts;
562 // remap the triangle references
563 for (i = 0;i < numtris;i++)
565 *pouttris++ = vertremap[temptris[i][0]];
566 *pouttris++ = vertremap[temptris[i][1]];
567 *pouttris++ = vertremap[temptris[i][2]];
569 // store the texture coordinates
570 pouttexcoords = Hunk_AllocName(sizeof(float[2]) * totalverts, loadname);
571 mheader->texdata = (int) pouttexcoords - (int) mheader;
572 for (i = 0;i < totalverts;i++)
574 *pouttexcoords++ = vertst[i][0];
575 *pouttexcoords++ = vertst[i][1];
580 frame = Hunk_AllocName(sizeof(maliasframe_t) * numframes, loadname);
581 mheader->framedata = (int) frame - (int) mheader;
582 posevert = Hunk_AllocName(sizeof(trivert2) * numposes * totalverts, loadname);
583 mheader->posedata = (int) posevert - (int) mheader;
584 pframetype = (daliasframetype_t *)&pintriangles[numtris];
586 // LordHavoc: doing proper bbox for model
587 aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
588 aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
590 for (i=0 ; i<numframes ; i++)
592 if ((aliasframetype_t) LittleLong (pframetype->type) == ALIAS_SINGLE)
593 pframetype = (daliasframetype_t *) Mod_LoadAliasFrame (pframetype + 1, frame++, mheader, numverts, totalverts, &posevert);
595 pframetype = (daliasframetype_t *) Mod_LoadAliasGroup (pframetype + 1, frame++, mheader, numverts, totalverts, &posevert);
598 // LordHavoc: fixed model bbox - was //FIXME: do this right
599 //mod->mins[0] = mod->mins[1] = mod->mins[2] = -16;
600 //mod->maxs[0] = mod->maxs[1] = mod->maxs[2] = 16;
601 for (j = 0;j < 3;j++)
603 mod->mins[j] = aliasbboxmin[j];
604 mod->maxs[j] = aliasbboxmax[j];
607 // move the complete, relocatable alias model to the cache
608 end = Hunk_LowMark ();
611 Cache_Alloc (&mod->cache, total, loadname);
612 if (!mod->cache.data)
614 memcpy (mod->cache.data, mheader, total);
616 Hunk_FreeToLowMark (start);
619 void Mod_ConvertQ2AliasVerts (int numverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivert2 *out)
623 for (i = 0;i < numverts;i++)
625 VectorCopy(v[i].v, out[i].v);
626 temp[0] = v[i].v[0] * scale[0] + translate[0];
627 temp[1] = v[i].v[1] * scale[1] + translate[1];
628 temp[2] = v[i].v[2] * scale[2] + translate[2];
629 // update bounding box
630 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
631 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
632 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
633 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
634 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
635 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
636 out[i].n[0] = (signed char) (r_avertexnormals[v[i].lightnormalindex][0] * 127.0);
637 out[i].n[1] = (signed char) (r_avertexnormals[v[i].lightnormalindex][1] * 127.0);
638 out[i].n[2] = (signed char) (r_avertexnormals[v[i].lightnormalindex][2] * 127.0);
648 } tempvert[MD2MAX_VERTS];
650 // decompress vertices
651 for (i = 0;i < numverts;i++)
653 VectorCopy(v[i].v, out[i].v);
654 tempvert[i].v[0] = v[i].v[0] * scale[0] + translate[0];
655 tempvert[i].v[1] = v[i].v[1] * scale[1] + translate[1];
656 tempvert[i].v[2] = v[i].v[2] * scale[2] + translate[2];
657 tempvert[i].normal[0] = tempvert[i].normal[1] = tempvert[i].normal[2] = 0;
658 tempvert[i].count = 0;
659 // update bounding box
660 if (tempvert[i].v[0] < aliasbboxmin[0]) aliasbboxmin[0] = tempvert[i].v[0];
661 if (tempvert[i].v[1] < aliasbboxmin[1]) aliasbboxmin[1] = tempvert[i].v[1];
662 if (tempvert[i].v[2] < aliasbboxmin[2]) aliasbboxmin[2] = tempvert[i].v[2];
663 if (tempvert[i].v[0] > aliasbboxmax[0]) aliasbboxmax[0] = tempvert[i].v[0];
664 if (tempvert[i].v[1] > aliasbboxmax[1]) aliasbboxmax[1] = tempvert[i].v[1];
665 if (tempvert[i].v[2] > aliasbboxmax[2]) aliasbboxmax[2] = tempvert[i].v[2];
667 // calculate surface normals
669 for (i = 0;i < numtris;i++)
671 VectorSubtract(tempvert[tris->v[0]].v, tempvert[tris->v[1]].v, t1);
672 VectorSubtract(tempvert[tris->v[2]].v, tempvert[tris->v[1]].v, t2);
673 CrossProduct(t1, t2, tris->normal);
674 VectorNormalize(tris->normal);
675 // add surface normal to vertices
676 for (j = 0;j < 3;j++)
678 VectorAdd(tris->normal, tempvert[tris->v[j]].normal, tempvert[tris->v[j]].normal);
679 tempvert[tris->v[j]].count++;
683 // average normals and write out 1.7bit format
684 for (i = 0;i < pheader->numtris;i++)
686 VectorNormalize(tempvert[i].normal);
687 out[i].n[0] = (signed char) (tempvert[i].normal[0] * 127.0);
688 out[i].n[1] = (signed char) (tempvert[i].normal[1] * 127.0);
689 out[i].n[2] = (signed char) (tempvert[i].normal[2] * 127.0);
699 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
701 int i, j, version, size, *pinglcmd, *poutglcmd, start, end, total, framesize;
704 md2triangle_t *pintriangles, *pouttriangles;
705 md2frame_t *pinframe;
706 md2memframe_t *poutframe;
710 start = Hunk_LowMark ();
713 // temptris = malloc(sizeof(temptris_t) * MD2MAX_TRIANGLES);
715 pinmodel = (md2_t *)buffer;
717 version = LittleLong (pinmodel->version);
718 if (version != MD2ALIAS_VERSION)
719 Host_Error ("%s has wrong version number (%i should be %i)",
720 mod->name, version, MD2ALIAS_VERSION);
722 mod->type = mod_alias;
723 mod->aliastype = ALIASTYPE_MD2;
725 framesize = sizeof(md2memframe_t) + LittleLong(pinmodel->num_xyz) * sizeof(trivert2);
726 // LordHavoc: calculate size for in memory version
727 size = sizeof(md2mem_t)
728 + LittleLong(pinmodel->num_st) * sizeof(md2stvert_t)
729 + LittleLong(pinmodel->num_tris) * sizeof(md2triangle_t)
730 + LittleLong(pinmodel->num_frames) * framesize
731 + LittleLong(pinmodel->num_glcmds) * sizeof(int);
732 if (size <= 0 || size >= MD2MAX_SIZE)
733 Host_Error ("%s is not a valid model", mod->name);
734 pheader = Hunk_AllocName (size, loadname);
736 mod->flags = 0; // there are no MD2 flags
737 mod->numframes = LittleLong(pinmodel->num_frames);
738 mod->synctype = ST_RAND;
739 mod->numtris = LittleLong(pinmodel->num_tris); // LordHavoc: to simplify renderer decisions
741 if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= LittleLong(pinmodel->ofs_end)))
742 Host_Error ("%s is not a valid model", mod->name);
743 if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= LittleLong(pinmodel->ofs_end))
744 Host_Error ("%s is not a valid model", mod->name);
745 if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= LittleLong(pinmodel->ofs_end))
746 Host_Error ("%s is not a valid model", mod->name);
747 if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= LittleLong(pinmodel->ofs_end))
748 Host_Error ("%s is not a valid model", mod->name);
749 if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= LittleLong(pinmodel->ofs_end))
750 Host_Error ("%s is not a valid model", mod->name);
752 if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
753 Host_Error ("%s has invalid number of triangles: %i", mod->name, LittleLong(pinmodel->num_tris));
754 if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
755 Host_Error ("%s has invalid number of vertices: %i", mod->name, LittleLong(pinmodel->num_xyz));
756 if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
757 Host_Error ("%s has invalid number of frames: %i", mod->name, LittleLong(pinmodel->num_frames));
758 if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MD2MAX_SKINS)
759 Host_Error ("%s has invalid number of skins: %i", mod->name, LittleLong(pinmodel->num_skins));
761 pheader->framesize = framesize;
762 pheader->num_skins = LittleLong(pinmodel->num_skins);
763 pheader->num_xyz = LittleLong(pinmodel->num_xyz);
764 pheader->num_st = LittleLong(pinmodel->num_st);
765 pheader->num_tris = LittleLong(pinmodel->num_tris);
766 pheader->num_frames = LittleLong(pinmodel->num_frames);
767 pheader->num_glcmds = LittleLong(pinmodel->num_glcmds);
770 if (pheader->num_skins)
772 int *skin, *skinrange;
773 skinrange = loadmodel->skinanimrange;
774 skin = loadmodel->skinanim;
775 // skinrange = Hunk_AllocName (sizeof(int) * (pheader->num_skins * 2), loadname);
776 // skin = skinrange + pheader->num_skins * 2;
777 // loadmodel->skinanimrange = (int) skinrange - (int) pheader;
778 // loadmodel->skinanim = (int) skin - (int) pheader;
779 pinskins = (void*)((int) pinmodel + LittleLong(pinmodel->ofs_skins));
780 for (i = 0;i < pheader->num_skins;i++)
784 *skin++ = loadtextureimage (pinskins, 0, 0, true, true);
785 *skin++ = 0; // the extra 4 layers are currently unused
789 pinskins += MD2MAX_SKINNAME;
792 loadmodel->numskins = pheader->num_skins;
795 pintriangles = (void*)((int) pinmodel + LittleLong(pinmodel->ofs_tris));
796 pouttriangles = (void*)&pheader[1];
797 pheader->ofs_tris = (int) pouttriangles - (int) pheader;
799 // swap the triangle list
800 for (i=0 ; i<pheader->num_tris ; i++)
802 for (j=0 ; j<3 ; j++)
804 temptris[i][j] = pouttriangles->index_xyz[j] = LittleShort (pintriangles->index_xyz[j]);
805 pouttriangles->index_st[j] = LittleShort (pintriangles->index_st[j]);
806 if (pouttriangles->index_xyz[j] >= pheader->num_xyz)
807 Host_Error ("%s has invalid vertex indices", mod->name);
808 if (pouttriangles->index_st[j] >= pheader->num_st)
809 Host_Error ("%s has invalid vertex indices", mod->name);
815 // LordHavoc: doing proper bbox for model
816 aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
817 aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
820 pinframe = (void*) ((int) pinmodel + LittleLong(pinmodel->ofs_frames));
821 poutframe = (void*) pouttriangles;
822 pheader->ofs_frames = (int) poutframe - (int) pheader;
823 for (i=0 ; i<pheader->num_frames ; i++)
825 for (j = 0;j < 3;j++)
827 poutframe->scale[j] = LittleFloat(pinframe->scale[j]);
828 poutframe->translate[j] = LittleFloat(pinframe->translate[j]);
830 Mod_ConvertQ2AliasVerts (pheader->num_xyz, poutframe->scale, poutframe->translate, &pinframe->verts[0], &poutframe->verts[0]);
831 pinframe = (void*) &pinframe->verts[j];
832 poutframe = (void*) &poutframe->verts[j];
835 // LordHavoc: model bbox
836 for (j = 0;j < 3;j++)
838 mod->mins[j] = aliasbboxmin[j];
839 mod->maxs[j] = aliasbboxmax[j];
842 // load the draw list
843 pinglcmd = (void*) ((int) pinmodel + LittleLong(pinmodel->ofs_glcmds));
844 poutglcmd = (void*) poutframe;
845 pheader->ofs_glcmds = (int) poutglcmd - (int) pheader;
846 for (i = 0;i < pheader->num_glcmds;i++)
847 *poutglcmd++ = LittleLong(*pinglcmd++);
849 // move the complete, relocatable alias model to the cache
850 end = Hunk_LowMark ();
853 Cache_Alloc (&mod->cache, total, loadname);
854 if (!mod->cache.data)
856 memcpy (mod->cache.data, pheader, total);
858 Hunk_FreeToLowMark (start);