don't crash in Mod_BuildAliasSkinFromSkinFrame on dedicated servers
[divverent/darkplaces.git] / 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 #include "r_shadow.h"
24
25 cvar_t r_skeletal_debugbone = {0, "r_skeletal_debugbone", "-1", "development cvar for testing skeletal model code"};
26 cvar_t r_skeletal_debugbonecomponent = {0, "r_skeletal_debugbonecomponent", "3", "development cvar for testing skeletal model code"};
27 cvar_t r_skeletal_debugbonevalue = {0, "r_skeletal_debugbonevalue", "100", "development cvar for testing skeletal model code"};
28 cvar_t r_skeletal_debugtranslatex = {0, "r_skeletal_debugtranslatex", "1", "development cvar for testing skeletal model code"};
29 cvar_t r_skeletal_debugtranslatey = {0, "r_skeletal_debugtranslatey", "1", "development cvar for testing skeletal model code"};
30 cvar_t r_skeletal_debugtranslatez = {0, "r_skeletal_debugtranslatez", "1", "development cvar for testing skeletal model code"};
31
32 float mod_md3_sin[320];
33
34 void Mod_AliasInit (void)
35 {
36         int i;
37         Cvar_RegisterVariable(&r_skeletal_debugbone);
38         Cvar_RegisterVariable(&r_skeletal_debugbonecomponent);
39         Cvar_RegisterVariable(&r_skeletal_debugbonevalue);
40         Cvar_RegisterVariable(&r_skeletal_debugtranslatex);
41         Cvar_RegisterVariable(&r_skeletal_debugtranslatey);
42         Cvar_RegisterVariable(&r_skeletal_debugtranslatez);
43         for (i = 0;i < 320;i++)
44                 mod_md3_sin[i] = sin(i * M_PI * 2.0f / 256.0);
45 }
46
47 void Mod_Alias_GetMesh_Vertices(const model_t *model, const frameblend_t *frameblend, float *vertex3f, float *normal3f, float *svector3f, float *tvector3f)
48 {
49 #define MAX_BONES 256
50         if (model->surfmesh.data_vertexweightindex4i)
51         {
52                 // vertex weighted skeletal
53                 int i, k;
54                 float boneposerelative[MAX_BONES][12];
55                 // interpolate matrices and concatenate them to their parents
56                 for (i = 0;i < model->num_bones;i++)
57                 {
58                         int blends;
59                         float *matrix, m[12], bonepose[MAX_BONES][12];
60                         for (k = 0;k < 12;k++)
61                                 m[k] = 0;
62                         for (blends = 0;blends < 4 && frameblend[blends].lerp > 0;blends++)
63                         {
64                                 matrix = model->data_poses + (frameblend[blends].frame * model->num_bones + i) * 12;
65                                 for (k = 0;k < 12;k++)
66                                         m[k] += matrix[k] * frameblend[blends].lerp;
67                         }
68                         if (i == r_skeletal_debugbone.integer)
69                                 m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
70                         m[3] *= r_skeletal_debugtranslatex.value;
71                         m[7] *= r_skeletal_debugtranslatey.value;
72                         m[11] *= r_skeletal_debugtranslatez.value;
73                         if (model->data_bones[i].parent >= 0)
74                                 R_ConcatTransforms(bonepose[model->data_bones[i].parent], m, bonepose[i]);
75                         else
76                                 for (k = 0;k < 12;k++)
77                                         bonepose[i][k] = m[k];
78                         // create a relative deformation matrix to describe displacement
79                         // from the base mesh, which is used by the actual weighting
80                         R_ConcatTransforms(bonepose[i], model->data_baseboneposeinverse + i * 12, boneposerelative[i]);
81                 }
82                 // blend the vertex bone weights
83                 // special case for the extremely common wf[0] == 1 because it saves 3 multiplies per array when compared to the other case (w[0] is always 1 if only one bone controls this vertex, artists only use multiple bones for certain special cases)
84                 // special case for the first bone because it avoids the need to memset the arrays before filling
85                 {
86                         const float *v = model->surfmesh.data_vertex3f;
87                         const int *wi = model->surfmesh.data_vertexweightindex4i;
88                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
89                         memset(vertex3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
90                         for (i = 0;i < model->surfmesh.num_vertices;i++, v += 3, wi += 4, wf += 4, vertex3f += 3)
91                         {
92                                 if (wf[0] == 1)
93                                 {
94                                         const float *m = boneposerelative[wi[0]];
95                                         vertex3f[0] = (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
96                                         vertex3f[1] = (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
97                                         vertex3f[2] = (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
98                                 }
99                                 else
100                                 {
101                                         const float *m = boneposerelative[wi[0]];
102                                         float f = wf[0];
103                                         vertex3f[0] = f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
104                                         vertex3f[1] = f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
105                                         vertex3f[2] = f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
106                                         for (k = 1;k < 4 && wf[k];k++)
107                                         {
108                                                 const float *m = boneposerelative[wi[k]];
109                                                 float f = wf[k];
110                                                 vertex3f[0] += f * (v[0] * m[0] + v[1] * m[1] + v[2] * m[ 2] + m[ 3]);
111                                                 vertex3f[1] += f * (v[0] * m[4] + v[1] * m[5] + v[2] * m[ 6] + m[ 7]);
112                                                 vertex3f[2] += f * (v[0] * m[8] + v[1] * m[9] + v[2] * m[10] + m[11]);
113                                         }
114                                 }
115                         }
116                 }
117                 if (normal3f)
118                 {
119                         const float *n = model->surfmesh.data_normal3f;
120                         const int *wi = model->surfmesh.data_vertexweightindex4i;
121                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
122                         memset(normal3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
123                         for (i = 0;i < model->surfmesh.num_vertices;i++, n += 3, wi += 4, wf += 4, normal3f += 3)
124                         {
125                                 if (wf[0] == 1)
126                                 {
127                                         const float *m = boneposerelative[wi[0]];
128                                         normal3f[0] = (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
129                                         normal3f[1] = (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
130                                         normal3f[2] = (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
131                                 }
132                                 else
133                                 {
134                                         const float *m = boneposerelative[wi[0]];
135                                         float f = wf[0];
136                                         normal3f[0] = f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
137                                         normal3f[1] = f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
138                                         normal3f[2] = f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
139                                         for (k = 1;k < 4 && wf[k];k++)
140                                         {
141                                                 const float *m = boneposerelative[wi[k]];
142                                                 float f = wf[k];
143                                                 normal3f[0] += f * (n[0] * m[0] + n[1] * m[1] + n[2] * m[ 2]);
144                                                 normal3f[1] += f * (n[0] * m[4] + n[1] * m[5] + n[2] * m[ 6]);
145                                                 normal3f[2] += f * (n[0] * m[8] + n[1] * m[9] + n[2] * m[10]);
146                                         }
147                                 }
148                         }
149                 }
150                 if (svector3f)
151                 {
152                         const float *sv = model->surfmesh.data_svector3f;
153                         const int *wi = model->surfmesh.data_vertexweightindex4i;
154                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
155                         memset(svector3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
156                         for (i = 0;i < model->surfmesh.num_vertices;i++, sv += 3, wi += 4, wf += 4, svector3f += 3)
157                         {
158                                 if (wf[0] == 1)
159                                 {
160                                         const float *m = boneposerelative[wi[0]];
161                                         svector3f[0] = (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
162                                         svector3f[1] = (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
163                                         svector3f[2] = (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
164                                 }
165                                 else
166                                 {
167                                         const float *m = boneposerelative[wi[0]];
168                                         float f = wf[0];
169                                         svector3f[0] = f * (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
170                                         svector3f[1] = f * (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
171                                         svector3f[2] = f * (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
172                                         for (k = 1;k < 4 && wf[k];k++)
173                                         {
174                                                 const float *m = boneposerelative[wi[k]];
175                                                 float f = wf[k];
176                                                 svector3f[0] += f * (sv[0] * m[0] + sv[1] * m[1] + sv[2] * m[ 2]);
177                                                 svector3f[1] += f * (sv[0] * m[4] + sv[1] * m[5] + sv[2] * m[ 6]);
178                                                 svector3f[2] += f * (sv[0] * m[8] + sv[1] * m[9] + sv[2] * m[10]);
179                                         }
180                                 }
181                         }
182                 }
183                 if (tvector3f)
184                 {
185                         const float *tv = model->surfmesh.data_tvector3f;
186                         const int *wi = model->surfmesh.data_vertexweightindex4i;
187                         const float *wf = model->surfmesh.data_vertexweightinfluence4f;
188                         memset(tvector3f, 0, sizeof(float[3]) * model->surfmesh.num_vertices);
189                         for (i = 0;i < model->surfmesh.num_vertices;i++, tv += 3, wi += 4, wf += 4, tvector3f += 3)
190                         {
191                                 if (wf[0] == 1)
192                                 {
193                                         const float *m = boneposerelative[wi[0]];
194                                         tvector3f[0] = (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
195                                         tvector3f[1] = (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
196                                         tvector3f[2] = (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
197                                 }
198                                 else
199                                 {
200                                         const float *m = boneposerelative[wi[0]];
201                                         float f = wf[0];
202                                         tvector3f[0] = f * (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
203                                         tvector3f[1] = f * (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
204                                         tvector3f[2] = f * (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
205                                         for (k = 1;k < 4 && wf[k];k++)
206                                         {
207                                                 const float *m = boneposerelative[wi[k]];
208                                                 float f = wf[k];
209                                                 tvector3f[0] += f * (tv[0] * m[0] + tv[1] * m[1] + tv[2] * m[ 2]);
210                                                 tvector3f[1] += f * (tv[0] * m[4] + tv[1] * m[5] + tv[2] * m[ 6]);
211                                                 tvector3f[2] += f * (tv[0] * m[8] + tv[1] * m[9] + tv[2] * m[10]);
212                                         }
213                                 }
214                         }
215                 }
216         }
217         else if (model->surfmesh.data_morphmd3vertex)
218         {
219                 // vertex morph
220                 int i, numblends, blendnum;
221                 int numverts = model->surfmesh.num_vertices;
222                 numblends = 0;
223                 for (blendnum = 0;blendnum < 4;blendnum++)
224                 {
225                         //VectorMA(translate, model->surfmesh.num_morphmdlframetranslate, frameblend[blendnum].lerp, translate);
226                         if (frameblend[blendnum].lerp > 0)
227                                 numblends = blendnum + 1;
228                 }
229                 // special case for the first blend because it avoids some adds and the need to memset the arrays first
230                 for (blendnum = 0;blendnum < numblends;blendnum++)
231                 {
232                         const md3vertex_t *verts = model->surfmesh.data_morphmd3vertex + numverts * frameblend[blendnum].frame;
233                         float scale = frameblend[blendnum].lerp * (1.0f / 64.0f);
234                         if (blendnum == 0)
235                         {
236                                 for (i = 0;i < numverts;i++)
237                                 {
238                                         vertex3f[i * 3 + 0] = verts[i].origin[0] * scale;
239                                         vertex3f[i * 3 + 1] = verts[i].origin[1] * scale;
240                                         vertex3f[i * 3 + 2] = verts[i].origin[2] * scale;
241                                 }
242                         }
243                         else
244                         {
245                                 for (i = 0;i < numverts;i++)
246                                 {
247                                         vertex3f[i * 3 + 0] += verts[i].origin[0] * scale;
248                                         vertex3f[i * 3 + 1] += verts[i].origin[1] * scale;
249                                         vertex3f[i * 3 + 2] += verts[i].origin[2] * scale;
250                                 }
251                         }
252                         // the yaw and pitch stored in md3 models are 8bit quantized angles
253                         // (0-255), and as such a lookup table is very well suited to
254                         // decoding them, and since cosine is equivilant to sine with an
255                         // extra 45 degree rotation, this uses one lookup table for both
256                         // sine and cosine with a +64 bias to get cosine.
257                         if (normal3f)
258                         {
259                                 float lerp = frameblend[blendnum].lerp;
260                                 if (blendnum == 0)
261                                 {
262                                         for (i = 0;i < numverts;i++)
263                                         {
264                                                 normal3f[i * 3 + 0] = mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
265                                                 normal3f[i * 3 + 1] = mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
266                                                 normal3f[i * 3 + 2] =                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
267                                         }
268                                 }
269                                 else
270                                 {
271                                         for (i = 0;i < numverts;i++)
272                                         {
273                                                 normal3f[i * 3 + 0] += mod_md3_sin[verts[i].yaw + 64] * mod_md3_sin[verts[i].pitch     ] * lerp;
274                                                 normal3f[i * 3 + 1] += mod_md3_sin[verts[i].yaw     ] * mod_md3_sin[verts[i].pitch     ] * lerp;
275                                                 normal3f[i * 3 + 2] +=                                  mod_md3_sin[verts[i].pitch + 64] * lerp;
276                                         }
277                                 }
278                         }
279                 }
280                 // md3 model vertices do not include tangents, so we have to generate them (extremely slow)
281                 if (normal3f)
282                         if (svector3f)
283                                 Mod_BuildTextureVectorsFromNormals(0, model->surfmesh.num_vertices, model->surfmesh.num_triangles, vertex3f, model->surfmesh.data_texcoordtexture2f, normal3f, model->surfmesh.data_element3i, svector3f, tvector3f, r_smoothnormals_areaweighting.integer);
284         }
285         else if (model->surfmesh.data_morphmdlvertex)
286         {
287                 // vertex morph
288                 int i, numblends, blendnum;
289                 int numverts = model->surfmesh.num_vertices;
290                 float translate[3];
291                 VectorClear(translate);
292                 numblends = 0;
293                 // blend the frame translates to avoid redundantly doing so on each vertex
294                 // (a bit of a brain twister but it works)
295                 for (blendnum = 0;blendnum < 4;blendnum++)
296                 {
297                         if (model->surfmesh.data_morphmd2framesize6f)
298                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6 + 3, translate);
299                         else
300                                 VectorMA(translate, frameblend[blendnum].lerp, model->surfmesh.num_morphmdlframetranslate, translate);
301                         if (frameblend[blendnum].lerp > 0)
302                                 numblends = blendnum + 1;
303                 }
304                 // special case for the first blend because it avoids some adds and the need to memset the arrays first
305                 for (blendnum = 0;blendnum < numblends;blendnum++)
306                 {
307                         const trivertx_t *verts = model->surfmesh.data_morphmdlvertex + numverts * frameblend[blendnum].frame;
308                         float scale[3];
309                         if (model->surfmesh.data_morphmd2framesize6f)
310                                 VectorScale(model->surfmesh.data_morphmd2framesize6f + frameblend[blendnum].frame * 6, frameblend[blendnum].lerp, scale);
311                         else
312                                 VectorScale(model->surfmesh.num_morphmdlframescale, frameblend[blendnum].lerp, scale);
313                         if (blendnum == 0)
314                         {
315                                 for (i = 0;i < numverts;i++)
316                                 {
317                                         vertex3f[i * 3 + 0] = translate[0] + verts[i].v[0] * scale[0];
318                                         vertex3f[i * 3 + 1] = translate[1] + verts[i].v[1] * scale[1];
319                                         vertex3f[i * 3 + 2] = translate[2] + verts[i].v[2] * scale[2];
320                                 }
321                         }
322                         else
323                         {
324                                 for (i = 0;i < numverts;i++)
325                                 {
326                                         vertex3f[i * 3 + 0] += verts[i].v[0] * scale[0];
327                                         vertex3f[i * 3 + 1] += verts[i].v[1] * scale[1];
328                                         vertex3f[i * 3 + 2] += verts[i].v[2] * scale[2];
329                                 }
330                         }
331                         // the vertex normals in mdl models are an index into a table of
332                         // 162 unique values, this very crude quantization reduces the
333                         // vertex normal to only one byte, which saves a lot of space but
334                         // also makes lighting pretty coarse
335                         if (normal3f)
336                         {
337                                 float lerp = frameblend[blendnum].lerp;
338                                 if (blendnum == 0)
339                                 {
340                                         for (i = 0;i < numverts;i++)
341                                         {
342                                                 const float *vn = m_bytenormals[verts[i].lightnormalindex];
343                                                 VectorScale(vn, lerp, normal3f + i*3);
344                                         }
345                                 }
346                                 else
347                                 {
348                                         for (i = 0;i < numverts;i++)
349                                         {
350                                                 const float *vn = m_bytenormals[verts[i].lightnormalindex];
351                                                 VectorMA(normal3f + i*3, lerp, vn, normal3f + i*3);
352                                         }
353                                 }
354                         }
355                 }
356                 if (normal3f)
357                         if (svector3f)
358                                 Mod_BuildTextureVectorsFromNormals(0, model->surfmesh.num_vertices, model->surfmesh.num_triangles, vertex3f, model->surfmesh.data_texcoordtexture2f, normal3f, model->surfmesh.data_element3i, svector3f, tvector3f, r_smoothnormals_areaweighting.integer);
359         }
360         else
361                 Host_Error("model %s has no skeletal or vertex morph animation data", model->name);
362 }
363
364 int Mod_Alias_GetTagMatrix(const model_t *model, int poseframe, int tagindex, matrix4x4_t *outmatrix)
365 {
366         const float *boneframe;
367         float tempbonematrix[12], bonematrix[12];
368         *outmatrix = identitymatrix;
369         if (model->num_bones)
370         {
371                 if (tagindex < 0 || tagindex >= model->num_bones)
372                         return 4;
373                 if (poseframe >= model->num_poses)
374                         return 6;
375                 boneframe = model->data_poses + poseframe * model->num_bones * 12;
376                 memcpy(bonematrix, boneframe + tagindex * 12, sizeof(float[12]));
377                 while (model->data_bones[tagindex].parent >= 0)
378                 {
379                         memcpy(tempbonematrix, bonematrix, sizeof(float[12]));
380                         R_ConcatTransforms(boneframe + model->data_bones[tagindex].parent * 12, tempbonematrix, bonematrix);
381                         tagindex = model->data_bones[tagindex].parent;
382                 }
383                 Matrix4x4_FromArray12FloatD3D(outmatrix, bonematrix);
384         }
385         else if (model->num_tags)
386         {
387                 if (tagindex < 0 || tagindex >= model->num_tags)
388                         return 4;
389                 if (poseframe >= model->num_tagframes)
390                         return 6;
391                 Matrix4x4_FromArray12FloatGL(outmatrix, model->data_tags[poseframe * model->num_tags + tagindex].matrixgl);
392         }
393         return 0;
394 }
395
396 int Mod_Alias_GetTagIndexForName(const model_t *model, unsigned int skin, const char *tagname)
397 {
398         int i;
399         if (model->data_overridetagnamesforskin && skin < (unsigned int)model->numskins && model->data_overridetagnamesforskin[(unsigned int)skin].num_overridetagnames)
400                 for (i = 0;i < model->data_overridetagnamesforskin[skin].num_overridetagnames;i++)
401                         if (!strcasecmp(tagname, model->data_overridetagnamesforskin[skin].data_overridetagnames[i].name))
402                                 return i + 1;
403         if (model->num_bones)
404                 for (i = 0;i < model->num_bones;i++)
405                         if (!strcasecmp(tagname, model->data_bones[i].name))
406                                 return i + 1;
407         if (model->num_tags)
408                 for (i = 0;i < model->num_tags;i++)
409                         if (!strcasecmp(tagname, model->data_tags[i].name))
410                                 return i + 1;
411         return 0;
412 }
413
414 static void Mod_BuildBaseBonePoses(void)
415 {
416         int i, k;
417         double scale;
418         float *basebonepose = Mem_Alloc(tempmempool, loadmodel->num_bones * sizeof(float[12]));
419         float *in12f = loadmodel->data_poses;
420         float *out12f = basebonepose;
421         float *outinv12f = loadmodel->data_baseboneposeinverse;
422         for (i = 0;i < loadmodel->num_bones;i++, in12f += 12, out12f += 12, outinv12f += 12)
423         {
424                 if (loadmodel->data_bones[i].parent >= 0)
425                         R_ConcatTransforms(basebonepose + 12 * loadmodel->data_bones[i].parent, in12f, out12f);
426                 else
427                         for (k = 0;k < 12;k++)
428                                 out12f[k] = in12f[k];
429
430                 // invert The Matrix
431
432                 // we only support uniform scaling, so assume the first row is enough
433                 // (note the lack of sqrt here, because we're trying to undo the scaling,
434                 // this means multiplying by the inverse scale twice - squaring it, which
435                 // makes the sqrt a waste of time)
436                 scale = 1.0 / (out12f[ 0] * out12f[ 0] + out12f[ 1] * out12f[ 1] + out12f[ 2] * out12f[ 2]);
437
438                 // invert the rotation by transposing and multiplying by the squared
439                 // recipricol of the input matrix scale as described above
440                 outinv12f[ 0] = (float)(out12f[ 0] * scale);
441                 outinv12f[ 1] = (float)(out12f[ 4] * scale);
442                 outinv12f[ 2] = (float)(out12f[ 8] * scale);
443                 outinv12f[ 4] = (float)(out12f[ 1] * scale);
444                 outinv12f[ 5] = (float)(out12f[ 5] * scale);
445                 outinv12f[ 6] = (float)(out12f[ 9] * scale);
446                 outinv12f[ 8] = (float)(out12f[ 2] * scale);
447                 outinv12f[ 9] = (float)(out12f[ 6] * scale);
448                 outinv12f[10] = (float)(out12f[10] * scale);
449
450                 // invert the translate
451                 outinv12f[ 3] = -(out12f[ 3] * outinv12f[ 0] + out12f[ 7] * outinv12f[ 1] + out12f[11] * outinv12f[ 2]);
452                 outinv12f[ 7] = -(out12f[ 3] * outinv12f[ 4] + out12f[ 7] * outinv12f[ 5] + out12f[11] * outinv12f[ 6]);
453                 outinv12f[11] = -(out12f[ 3] * outinv12f[ 8] + out12f[ 7] * outinv12f[ 9] + out12f[11] * outinv12f[10]);
454         }
455         Mem_Free(basebonepose);
456 }
457
458 static void Mod_Alias_CalculateBoundingBox(void)
459 {
460         int i, j;
461         int vnum;
462         qboolean firstvertex = true;
463         float dist, yawradius, radius;
464         float *v;
465         float *vertex3f;
466         frameblend_t frameblend[4];
467         memset(frameblend, 0, sizeof(frameblend));
468         frameblend[0].lerp = 1;
469         vertex3f = Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3]));
470         VectorClear(loadmodel->normalmins);
471         VectorClear(loadmodel->normalmaxs);
472         yawradius = 0;
473         radius = 0;
474         for (i = 0;i < loadmodel->numframes;i++)
475         {
476                 for (j = 0, frameblend[0].frame = loadmodel->animscenes[i].firstframe;j < loadmodel->animscenes[i].framecount;j++, frameblend[0].frame++)
477                 {
478                         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, vertex3f, NULL, NULL, NULL);
479                         for (vnum = 0, v = vertex3f;vnum < loadmodel->surfmesh.num_vertices;vnum++, v += 3)
480                         {
481                                 if (firstvertex)
482                                 {
483                                         firstvertex = false;
484                                         VectorCopy(v, loadmodel->normalmins);
485                                         VectorCopy(v, loadmodel->normalmaxs);
486                                 }
487                                 else
488                                 {
489                                         if (loadmodel->normalmins[0] > v[0]) loadmodel->normalmins[0] = v[0];
490                                         if (loadmodel->normalmins[1] > v[1]) loadmodel->normalmins[1] = v[1];
491                                         if (loadmodel->normalmins[2] > v[2]) loadmodel->normalmins[2] = v[2];
492                                         if (loadmodel->normalmaxs[0] < v[0]) loadmodel->normalmaxs[0] = v[0];
493                                         if (loadmodel->normalmaxs[1] < v[1]) loadmodel->normalmaxs[1] = v[1];
494                                         if (loadmodel->normalmaxs[2] < v[2]) loadmodel->normalmaxs[2] = v[2];
495                                 }
496                                 dist = v[0] * v[0] + v[1] * v[1];
497                                 if (yawradius < dist)
498                                         yawradius = dist;
499                                 dist += v[2] * v[2];
500                                 if (radius < dist)
501                                         radius = dist;
502                         }
503                 }
504         }
505         Mem_Free(vertex3f);
506         radius = sqrt(radius);
507         yawradius = sqrt(yawradius);
508         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -yawradius;
509         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = yawradius;
510         loadmodel->yawmins[2] = loadmodel->normalmins[2];
511         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
512         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -radius;
513         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] = radius;
514         loadmodel->radius = radius;
515         loadmodel->radius2 = radius * radius;
516 }
517
518 static void Mod_Alias_Mesh_CompileFrameZero(void)
519 {
520         frameblend_t frameblend[4] = {{0, 1}, {0, 0}, {0, 0}, {0, 0}};
521         loadmodel->surfmesh.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[3][4]));
522         loadmodel->surfmesh.data_svector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 3;
523         loadmodel->surfmesh.data_tvector3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 6;
524         loadmodel->surfmesh.data_normal3f = loadmodel->surfmesh.data_vertex3f + loadmodel->surfmesh.num_vertices * 9;
525         Mod_Alias_GetMesh_Vertices(loadmodel, frameblend, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f);
526 }
527
528 static void Mod_MDLMD2MD3_TraceBox(model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
529 {
530         int i;
531         float segmentmins[3], segmentmaxs[3];
532         frameblend_t frameblend[4];
533         msurface_t *surface;
534         static int maxvertices = 0;
535         static float *vertex3f = NULL;
536         memset(trace, 0, sizeof(*trace));
537         trace->fraction = 1;
538         trace->realfraction = 1;
539         trace->hitsupercontentsmask = hitsupercontentsmask;
540         memset(frameblend, 0, sizeof(frameblend));
541         frameblend[0].frame = frame;
542         frameblend[0].lerp = 1;
543         if (maxvertices < model->surfmesh.num_vertices)
544         {
545                 if (vertex3f)
546                         Z_Free(vertex3f);
547                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
548                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
549         }
550         if (VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
551         {
552                 // line trace
553                 segmentmins[0] = min(start[0], end[0]) - 1;
554                 segmentmins[1] = min(start[1], end[1]) - 1;
555                 segmentmins[2] = min(start[2], end[2]) - 1;
556                 segmentmaxs[0] = max(start[0], end[0]) + 1;
557                 segmentmaxs[1] = max(start[1], end[1]) + 1;
558                 segmentmaxs[2] = max(start[2], end[2]) + 1;
559                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
560                 {
561                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
562                         Collision_TraceLineTriangleMeshFloat(trace, start, end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
563                 }
564         }
565         else
566         {
567                 // box trace, performed as brush trace
568                 colbrushf_t *thisbrush_start, *thisbrush_end;
569                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
570                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
571                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
572                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
573                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
574                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
575                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
576                 VectorAdd(start, boxmins, boxstartmins);
577                 VectorAdd(start, boxmaxs, boxstartmaxs);
578                 VectorAdd(end, boxmins, boxendmins);
579                 VectorAdd(end, boxmaxs, boxendmaxs);
580                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
581                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
582                 for (i = 0, surface = model->data_surfaces;i < model->num_surfaces;i++, surface++)
583                 {
584                         if (maxvertices < model->surfmesh.num_vertices)
585                         {
586                                 if (vertex3f)
587                                         Z_Free(vertex3f);
588                                 maxvertices = (model->surfmesh.num_vertices + 255) & ~255;
589                                 vertex3f = (float *)Z_Malloc(maxvertices * sizeof(float[3]));
590                         }
591                         Mod_Alias_GetMesh_Vertices(model, frameblend, vertex3f, NULL, NULL, NULL);
592                         Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.num_triangles, model->surfmesh.data_element3i, vertex3f, SUPERCONTENTS_SOLID, 0, surface->texture, segmentmins, segmentmaxs);
593                 }
594         }
595 }
596
597 static void Mod_ConvertAliasVerts (int inverts, trivertx_t *v, trivertx_t *out, int *vertremap)
598 {
599         int i, j;
600         for (i = 0;i < inverts;i++)
601         {
602                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
603                         continue;
604                 j = vertremap[i]; // not onseam
605                 if (j >= 0)
606                         out[j] = v[i];
607                 j = vertremap[i+inverts]; // onseam
608                 if (j >= 0)
609                         out[j] = v[i];
610         }
611 }
612
613 static void Mod_MDL_LoadFrames (unsigned char* datapointer, int inverts, int *vertremap)
614 {
615         int i, f, pose, groupframes;
616         float interval;
617         daliasframetype_t *pframetype;
618         daliasframe_t *pinframe;
619         daliasgroup_t *group;
620         daliasinterval_t *intervals;
621         animscene_t *scene;
622         pose = 0;
623         scene = loadmodel->animscenes;
624         for (f = 0;f < loadmodel->numframes;f++)
625         {
626                 pframetype = (daliasframetype_t *)datapointer;
627                 datapointer += sizeof(daliasframetype_t);
628                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
629                 {
630                         // a single frame is still treated as a group
631                         interval = 0.1f;
632                         groupframes = 1;
633                 }
634                 else
635                 {
636                         // read group header
637                         group = (daliasgroup_t *)datapointer;
638                         datapointer += sizeof(daliasgroup_t);
639                         groupframes = LittleLong (group->numframes);
640
641                         // intervals (time per frame)
642                         intervals = (daliasinterval_t *)datapointer;
643                         datapointer += sizeof(daliasinterval_t) * groupframes;
644
645                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
646                         if (interval < 0.01f)
647                         {
648                                 Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
649                                 interval = 0.1f;
650                         }
651                 }
652
653                 // get scene name from first frame
654                 pinframe = (daliasframe_t *)datapointer;
655
656                 strlcpy(scene->name, pinframe->name, sizeof(scene->name));
657                 scene->firstframe = pose;
658                 scene->framecount = groupframes;
659                 scene->framerate = 1.0f / interval;
660                 scene->loop = true;
661                 scene++;
662
663                 // read frames
664                 for (i = 0;i < groupframes;i++)
665                 {
666                         pinframe = (daliasframe_t *)datapointer;
667                         datapointer += sizeof(daliasframe_t);
668                         Mod_ConvertAliasVerts(inverts, (trivertx_t *)datapointer, loadmodel->surfmesh.data_morphmdlvertex + pose * loadmodel->surfmesh.num_vertices, vertremap);
669                         datapointer += sizeof(trivertx_t) * inverts;
670                         pose++;
671                 }
672         }
673 }
674
675 static void Mod_BuildAliasSkinFromSkinFrame(texture_t *texture, skinframe_t *skinframe)
676 {
677         if (cls.state == ca_dedicated)
678                 return;
679         // hack
680         if (!skinframe)
681                 skinframe = R_SkinFrame_LoadMissing();
682         texture->currentframe = texture;
683         texture->numskinframes = 1;
684         texture->skinframerate = 1;
685         texture->skinframes[0] = skinframe;
686         texture->currentskinframe = skinframe;
687
688         texture->basematerialflags = MATERIALFLAG_WALL;
689         if (texture->currentskinframe->fog)
690                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
691         texture->currentmaterialflags = texture->basematerialflags;
692 }
693
694 static void Mod_BuildAliasSkinsFromSkinFiles(texture_t *skin, skinfile_t *skinfile, char *meshname, char *shadername)
695 {
696         int i;
697         skinfileitem_t *skinfileitem;
698         skinframe_t *tempskinframe;
699         if (skinfile)
700         {
701                 // the skin += loadmodel->num_surfaces part of this is because data_textures on alias models is arranged as [numskins][numsurfaces]
702                 for (i = 0;skinfile;skinfile = skinfile->next, i++, skin += loadmodel->num_surfaces)
703                 {
704                         memset(skin, 0, sizeof(*skin));
705                         Mod_BuildAliasSkinFromSkinFrame(skin, NULL);
706                         // don't render unmentioned meshes
707                         skin->basematerialflags = skin->currentmaterialflags = 0;
708                         // see if a mesh
709                         for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = skinfileitem->next)
710                         {
711                                 // leave the skin unitialized (nodraw) if the replacement is "common/nodraw" or "textures/common/nodraw"
712                                 if (!strcmp(skinfileitem->name, meshname) && strcmp(skinfileitem->replacement, "common/nodraw") && strcmp(skinfileitem->replacement, "textures/common/nodraw"))
713                                 {
714                                         tempskinframe = R_SkinFrame_LoadExternal(skinfileitem->replacement, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
715                                         if (!tempskinframe)
716                                                 if (cls.state != ca_dedicated)
717                                                         Con_DPrintf("mesh \"%s\": failed to load skin #%i \"%s\"\n", meshname, i, skinfileitem->replacement);
718                                         Mod_BuildAliasSkinFromSkinFrame(skin, tempskinframe);
719                                         break;
720                                 }
721                         }
722                 }
723         }
724         else
725         {
726                 tempskinframe = R_SkinFrame_LoadExternal(shadername, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
727                 if (!tempskinframe)
728                         if (cls.state != ca_dedicated)
729                                 Con_Printf("Can't find texture \"%s\" for mesh \"%s\", using grey checkerboard\n", shadername, meshname);
730                 Mod_BuildAliasSkinFromSkinFrame(skin, tempskinframe);
731         }
732 }
733
734 #define BOUNDI(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%d exceeds %d - %d)", loadmodel->name, VALUE, MIN, MAX);
735 #define BOUNDF(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%f exceeds %f - %f)", loadmodel->name, VALUE, MIN, MAX);
736 void Mod_IDP0_Load(model_t *mod, void *buffer, void *bufferend)
737 {
738         int i, j, version, totalskins, skinwidth, skinheight, groupframes, groupskins, numverts;
739         float scales, scalet, interval;
740         msurface_t *surface;
741         unsigned char *data;
742         mdl_t *pinmodel;
743         stvert_t *pinstverts;
744         dtriangle_t *pintriangles;
745         daliasskintype_t *pinskintype;
746         daliasskingroup_t *pinskingroup;
747         daliasskininterval_t *pinskinintervals;
748         daliasframetype_t *pinframetype;
749         daliasgroup_t *pinframegroup;
750         unsigned char *datapointer, *startframes, *startskins;
751         char name[MAX_QPATH];
752         skinframe_t *tempskinframe;
753         animscene_t *tempskinscenes;
754         texture_t *tempaliasskins;
755         float *vertst;
756         int *vertonseam, *vertremap;
757         skinfile_t *skinfiles;
758
759         datapointer = (unsigned char *)buffer;
760         pinmodel = (mdl_t *)datapointer;
761         datapointer += sizeof(mdl_t);
762
763         version = LittleLong (pinmodel->version);
764         if (version != ALIAS_VERSION)
765                 Host_Error ("%s has wrong version number (%i should be %i)",
766                                  loadmodel->name, version, ALIAS_VERSION);
767
768         loadmodel->type = mod_alias;
769         loadmodel->DrawSky = NULL;
770         loadmodel->Draw = R_Q1BSP_Draw;
771         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
772         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
773         loadmodel->DrawLight = R_Q1BSP_DrawLight;
774         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
775
776         loadmodel->num_surfaces = 1;
777         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
778         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int));
779         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
780         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
781         loadmodel->surfacelist[0] = 0;
782
783         loadmodel->numskins = LittleLong(pinmodel->numskins);
784         BOUNDI(loadmodel->numskins,0,65536);
785         skinwidth = LittleLong (pinmodel->skinwidth);
786         BOUNDI(skinwidth,0,65536);
787         skinheight = LittleLong (pinmodel->skinheight);
788         BOUNDI(skinheight,0,65536);
789         numverts = LittleLong(pinmodel->numverts);
790         BOUNDI(numverts,0,65536);
791         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->numtris);
792         BOUNDI(loadmodel->surfmesh.num_triangles,0,65536);
793         loadmodel->numframes = LittleLong(pinmodel->numframes);
794         BOUNDI(loadmodel->numframes,0,65536);
795         loadmodel->synctype = (synctype_t)LittleLong (pinmodel->synctype);
796         BOUNDI(loadmodel->synctype,0,2);
797         loadmodel->flags = LittleLong (pinmodel->flags);
798
799         for (i = 0;i < 3;i++)
800         {
801                 loadmodel->surfmesh.num_morphmdlframescale[i] = LittleFloat (pinmodel->scale[i]);
802                 loadmodel->surfmesh.num_morphmdlframetranslate[i] = LittleFloat (pinmodel->scale_origin[i]);
803         }
804
805         startskins = datapointer;
806         totalskins = 0;
807         for (i = 0;i < loadmodel->numskins;i++)
808         {
809                 pinskintype = (daliasskintype_t *)datapointer;
810                 datapointer += sizeof(daliasskintype_t);
811                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
812                         groupskins = 1;
813                 else
814                 {
815                         pinskingroup = (daliasskingroup_t *)datapointer;
816                         datapointer += sizeof(daliasskingroup_t);
817                         groupskins = LittleLong(pinskingroup->numskins);
818                         datapointer += sizeof(daliasskininterval_t) * groupskins;
819                 }
820
821                 for (j = 0;j < groupskins;j++)
822                 {
823                         datapointer += skinwidth * skinheight;
824                         totalskins++;
825                 }
826         }
827
828         pinstverts = (stvert_t *)datapointer;
829         datapointer += sizeof(stvert_t) * numverts;
830
831         pintriangles = (dtriangle_t *)datapointer;
832         datapointer += sizeof(dtriangle_t) * loadmodel->surfmesh.num_triangles;
833
834         startframes = datapointer;
835         loadmodel->surfmesh.num_morphframes = 0;
836         for (i = 0;i < loadmodel->numframes;i++)
837         {
838                 pinframetype = (daliasframetype_t *)datapointer;
839                 datapointer += sizeof(daliasframetype_t);
840                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
841                         groupframes = 1;
842                 else
843                 {
844                         pinframegroup = (daliasgroup_t *)datapointer;
845                         datapointer += sizeof(daliasgroup_t);
846                         groupframes = LittleLong(pinframegroup->numframes);
847                         datapointer += sizeof(daliasinterval_t) * groupframes;
848                 }
849
850                 for (j = 0;j < groupframes;j++)
851                 {
852                         datapointer += sizeof(daliasframe_t);
853                         datapointer += sizeof(trivertx_t) * numverts;
854                         loadmodel->surfmesh.num_morphframes++;
855                 }
856         }
857
858         // store texture coordinates into temporary array, they will be stored
859         // after usage is determined (triangle data)
860         vertst = (float *)Mem_Alloc(tempmempool, numverts * 2 * sizeof(float[2]));
861         vertremap = (int *)Mem_Alloc(tempmempool, numverts * 3 * sizeof(int));
862         vertonseam = vertremap + numverts * 2;
863
864         scales = 1.0 / skinwidth;
865         scalet = 1.0 / skinheight;
866         for (i = 0;i < numverts;i++)
867         {
868                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
869                 vertst[i*2+0] = (LittleLong(pinstverts[i].s) + 0.5) * scales;
870                 vertst[i*2+1] = (LittleLong(pinstverts[i].t) + 0.5) * scalet;
871                 vertst[(i+numverts)*2+0] = vertst[i*2+0] + 0.5;
872                 vertst[(i+numverts)*2+1] = vertst[i*2+1];
873         }
874
875 // load triangle data
876         loadmodel->surfmesh.data_element3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->surfmesh.num_triangles);
877
878         // read the triangle elements
879         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
880                 for (j = 0;j < 3;j++)
881                         loadmodel->surfmesh.data_element3i[i*3+j] = LittleLong(pintriangles[i].vertindex[j]);
882         // validate (note numverts is used because this is the original data)
883         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, numverts, __FILE__, __LINE__);
884         // now butcher the elements according to vertonseam and tri->facesfront
885         // and then compact the vertex set to remove duplicates
886         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
887                 if (!LittleLong(pintriangles[i].facesfront)) // backface
888                         for (j = 0;j < 3;j++)
889                                 if (vertonseam[loadmodel->surfmesh.data_element3i[i*3+j]])
890                                         loadmodel->surfmesh.data_element3i[i*3+j] += numverts;
891         // count the usage
892         // (this uses vertremap to count usage to save some memory)
893         for (i = 0;i < numverts*2;i++)
894                 vertremap[i] = 0;
895         for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
896                 vertremap[loadmodel->surfmesh.data_element3i[i]]++;
897         // build remapping table and compact array
898         loadmodel->surfmesh.num_vertices = 0;
899         for (i = 0;i < numverts*2;i++)
900         {
901                 if (vertremap[i])
902                 {
903                         vertremap[i] = loadmodel->surfmesh.num_vertices;
904                         vertst[loadmodel->surfmesh.num_vertices*2+0] = vertst[i*2+0];
905                         vertst[loadmodel->surfmesh.num_vertices*2+1] = vertst[i*2+1];
906                         loadmodel->surfmesh.num_vertices++;
907                 }
908                 else
909                         vertremap[i] = -1; // not used at all
910         }
911         // remap the elements to the new vertex set
912         for (i = 0;i < loadmodel->surfmesh.num_triangles * 3;i++)
913                 loadmodel->surfmesh.data_element3i[i] = vertremap[loadmodel->surfmesh.data_element3i[i]];
914         // store the texture coordinates
915         loadmodel->surfmesh.data_texcoordtexture2f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * loadmodel->surfmesh.num_vertices);
916         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
917         {
918                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = vertst[i*2+0];
919                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = vertst[i*2+1];
920         }
921
922 // load the frames
923         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
924         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * loadmodel->surfmesh.num_morphframes * loadmodel->surfmesh.num_vertices);
925         loadmodel->surfmesh.data_neighbor3i = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_triangles * sizeof(int[3]));
926         Mod_MDL_LoadFrames (startframes, numverts, vertremap);
927         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
928         Mod_Alias_CalculateBoundingBox();
929         Mod_Alias_Mesh_CompileFrameZero();
930
931         Mem_Free(vertst);
932         Mem_Free(vertremap);
933
934         // load the skins
935         skinfiles = Mod_LoadSkinFiles();
936         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
937         loadmodel->num_textures = loadmodel->num_surfaces;
938         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
939         if (skinfiles)
940         {
941                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
942                 Mod_FreeSkinFiles(skinfiles);
943                 for (i = 0;i < loadmodel->numskins;i++)
944                 {
945                         loadmodel->skinscenes[i].firstframe = i;
946                         loadmodel->skinscenes[i].framecount = 1;
947                         loadmodel->skinscenes[i].loop = true;
948                         loadmodel->skinscenes[i].framerate = 10;
949                 }
950         }
951         else
952         {
953                 totalskins = 0;
954                 datapointer = startskins;
955                 for (i = 0;i < loadmodel->numskins;i++)
956                 {
957                         pinskintype = (daliasskintype_t *)datapointer;
958                         datapointer += sizeof(daliasskintype_t);
959
960                         if (pinskintype->type == ALIAS_SKIN_SINGLE)
961                         {
962                                 groupskins = 1;
963                                 interval = 0.1f;
964                         }
965                         else
966                         {
967                                 pinskingroup = (daliasskingroup_t *)datapointer;
968                                 datapointer += sizeof(daliasskingroup_t);
969
970                                 groupskins = LittleLong (pinskingroup->numskins);
971
972                                 pinskinintervals = (daliasskininterval_t *)datapointer;
973                                 datapointer += sizeof(daliasskininterval_t) * groupskins;
974
975                                 interval = LittleFloat(pinskinintervals[0].interval);
976                                 if (interval < 0.01f)
977                                 {
978                                         Con_Printf("%s has an invalid interval %f, changing to 0.1\n", loadmodel->name, interval);
979                                         interval = 0.1f;
980                                 }
981                         }
982
983                         sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
984                         loadmodel->skinscenes[i].firstframe = totalskins;
985                         loadmodel->skinscenes[i].framecount = groupskins;
986                         loadmodel->skinscenes[i].framerate = 1.0f / interval;
987                         loadmodel->skinscenes[i].loop = true;
988
989                         for (j = 0;j < groupskins;j++)
990                         {
991                                 if (groupskins > 1)
992                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
993                                 else
994                                         sprintf (name, "%s_%i", loadmodel->name, i);
995                                 tempskinframe = R_SkinFrame_LoadExternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP);
996                                 if (!tempskinframe)
997                                         tempskinframe = R_SkinFrame_LoadInternal(name, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_PICMIP, true, r_fullbrights.integer, (unsigned char *)datapointer, skinwidth, skinheight, 8, NULL, NULL);
998                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
999                                 datapointer += skinwidth * skinheight;
1000                                 totalskins++;
1001                         }
1002                 }
1003                 // check for skins that don't exist in the model, but do exist as external images
1004                 // (this was added because yummyluv kept pestering me about support for it)
1005                 while ((tempskinframe = R_SkinFrame_LoadExternal(va("%s_%i", loadmodel->name, loadmodel->numskins), (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP)))
1006                 {
1007                         // expand the arrays to make room
1008                         tempskinscenes = loadmodel->skinscenes;
1009                         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, (loadmodel->numskins + 1) * sizeof(animscene_t));
1010                         memcpy(loadmodel->skinscenes, tempskinscenes, loadmodel->numskins * sizeof(animscene_t));
1011                         Mem_Free(tempskinscenes);
1012
1013                         tempaliasskins = loadmodel->data_textures;
1014                         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * (totalskins + 1) * sizeof(texture_t));
1015                         memcpy(loadmodel->data_textures, tempaliasskins, loadmodel->num_surfaces * totalskins * sizeof(texture_t));
1016                         Mem_Free(tempaliasskins);
1017
1018                         // store the info about the new skin
1019                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + totalskins * loadmodel->num_surfaces, tempskinframe);
1020                         strlcpy(loadmodel->skinscenes[loadmodel->numskins].name, name, sizeof(loadmodel->skinscenes[loadmodel->numskins].name));
1021                         loadmodel->skinscenes[loadmodel->numskins].firstframe = totalskins;
1022                         loadmodel->skinscenes[loadmodel->numskins].framecount = 1;
1023                         loadmodel->skinscenes[loadmodel->numskins].framerate = 10.0f;
1024                         loadmodel->skinscenes[loadmodel->numskins].loop = true;
1025
1026                         //increase skin counts
1027                         loadmodel->numskins++;
1028                         totalskins++;
1029
1030                         // fix up the pointers since they are pointing at the old textures array
1031                         // FIXME: this is a hack!
1032                         for (j = 0;j < loadmodel->numskins * loadmodel->num_surfaces;j++)
1033                                 loadmodel->data_textures[j].currentframe = &loadmodel->data_textures[j];
1034                 }
1035         }
1036
1037         surface = loadmodel->data_surfaces;
1038         surface->texture = loadmodel->data_textures;
1039         surface->num_firsttriangle = 0;
1040         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1041         surface->num_firstvertex = 0;
1042         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1043
1044         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1045 }
1046
1047 void Mod_IDP2_Load(model_t *mod, void *buffer, void *bufferend)
1048 {
1049         int i, j, hashindex, numxyz, numst, xyz, st, skinwidth, skinheight, *vertremap, version, end;
1050         float iskinwidth, iskinheight;
1051         unsigned char *data;
1052         msurface_t *surface;
1053         md2_t *pinmodel;
1054         unsigned char *base, *datapointer;
1055         md2frame_t *pinframe;
1056         char *inskin;
1057         md2triangle_t *intri;
1058         unsigned short *inst;
1059         struct md2verthash_s
1060         {
1061                 struct md2verthash_s *next;
1062                 unsigned short xyz;
1063                 unsigned short st;
1064         }
1065         *hash, **md2verthash, *md2verthashdata;
1066         skinframe_t *tempskinframe;
1067         skinfile_t *skinfiles;
1068
1069         pinmodel = (md2_t *)buffer;
1070         base = (unsigned char *)buffer;
1071
1072         version = LittleLong (pinmodel->version);
1073         if (version != MD2ALIAS_VERSION)
1074                 Host_Error ("%s has wrong version number (%i should be %i)",
1075                         loadmodel->name, version, MD2ALIAS_VERSION);
1076
1077         loadmodel->type = mod_alias;
1078         loadmodel->DrawSky = NULL;
1079         loadmodel->Draw = R_Q1BSP_Draw;
1080         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1081         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1082         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1083         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1084
1085         if (LittleLong(pinmodel->num_tris) < 1 || LittleLong(pinmodel->num_tris) > 65536)
1086                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
1087         if (LittleLong(pinmodel->num_xyz) < 1 || LittleLong(pinmodel->num_xyz) > 65536)
1088                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
1089         if (LittleLong(pinmodel->num_frames) < 1 || LittleLong(pinmodel->num_frames) > 65536)
1090                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
1091         if (LittleLong(pinmodel->num_skins) < 0 || LittleLong(pinmodel->num_skins) > 256)
1092                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
1093
1094         end = LittleLong(pinmodel->ofs_end);
1095         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins) <= 0 || LittleLong(pinmodel->ofs_skins) >= end))
1096                 Host_Error ("%s is not a valid model", loadmodel->name);
1097         if (LittleLong(pinmodel->ofs_st) <= 0 || LittleLong(pinmodel->ofs_st) >= end)
1098                 Host_Error ("%s is not a valid model", loadmodel->name);
1099         if (LittleLong(pinmodel->ofs_tris) <= 0 || LittleLong(pinmodel->ofs_tris) >= end)
1100                 Host_Error ("%s is not a valid model", loadmodel->name);
1101         if (LittleLong(pinmodel->ofs_frames) <= 0 || LittleLong(pinmodel->ofs_frames) >= end)
1102                 Host_Error ("%s is not a valid model", loadmodel->name);
1103         if (LittleLong(pinmodel->ofs_glcmds) <= 0 || LittleLong(pinmodel->ofs_glcmds) >= end)
1104                 Host_Error ("%s is not a valid model", loadmodel->name);
1105
1106         loadmodel->numskins = LittleLong(pinmodel->num_skins);
1107         numxyz = LittleLong(pinmodel->num_xyz);
1108         numst = LittleLong(pinmodel->num_st);
1109         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
1110         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1111         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
1112         skinwidth = LittleLong(pinmodel->skinwidth);
1113         skinheight = LittleLong(pinmodel->skinheight);
1114         iskinwidth = 1.0f / skinwidth;
1115         iskinheight = 1.0f / skinheight;
1116
1117         loadmodel->num_surfaces = 1;
1118         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1119         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]));
1120         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1121         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1122         loadmodel->surfacelist[0] = 0;
1123         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1124         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
1125         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1126         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
1127
1128         loadmodel->flags = 0; // there are no MD2 flags
1129         loadmodel->synctype = ST_RAND;
1130
1131         // load the skins
1132         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
1133         skinfiles = Mod_LoadSkinFiles();
1134         if (skinfiles)
1135         {
1136                 loadmodel->num_textures = loadmodel->num_surfaces;
1137                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1138                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
1139                 Mod_FreeSkinFiles(skinfiles);
1140         }
1141         else if (loadmodel->numskins)
1142         {
1143                 // skins found (most likely not a player model)
1144                 loadmodel->num_textures = loadmodel->num_surfaces;
1145                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1146                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
1147                 {
1148                         tempskinframe = R_SkinFrame_LoadExternal(inskin, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
1149                         if (!tempskinframe)
1150                                 Con_Printf("%s is missing skin \"%s\"\n", loadmodel->name, inskin);
1151                         Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i * loadmodel->num_surfaces, tempskinframe);
1152                 }
1153         }
1154         else
1155         {
1156                 // no skins (most likely a player model)
1157                 loadmodel->numskins = 1;
1158                 loadmodel->num_textures = loadmodel->num_surfaces;
1159                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
1160                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
1161         }
1162
1163         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1164         for (i = 0;i < loadmodel->numskins;i++)
1165         {
1166                 loadmodel->skinscenes[i].firstframe = i;
1167                 loadmodel->skinscenes[i].framecount = 1;
1168                 loadmodel->skinscenes[i].loop = true;
1169                 loadmodel->skinscenes[i].framerate = 10;
1170         }
1171
1172         // load the triangles and stvert data
1173         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
1174         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
1175         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
1176         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
1177         // swap the triangle list
1178         loadmodel->surfmesh.num_vertices = 0;
1179         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
1180         {
1181                 for (j = 0;j < 3;j++)
1182                 {
1183                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
1184                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
1185                         if (xyz >= numxyz)
1186                         {
1187                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
1188                                 xyz = 0;
1189                         }
1190                         if (st >= numst)
1191                         {
1192                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
1193                                 st = 0;
1194                         }
1195                         hashindex = (xyz * 256 + st) & 65535;
1196                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
1197                                 if (hash->xyz == xyz && hash->st == st)
1198                                         break;
1199                         if (hash == NULL)
1200                         {
1201                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
1202                                 hash->xyz = xyz;
1203                                 hash->st = st;
1204                                 hash->next = md2verthash[hashindex];
1205                                 md2verthash[hashindex] = hash;
1206                         }
1207                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
1208                 }
1209         }
1210
1211         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
1212         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t));
1213         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
1214         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
1215         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
1216         {
1217                 int sts, stt;
1218                 hash = md2verthashdata + i;
1219                 vertremap[i] = hash->xyz;
1220                 sts = LittleShort(inst[hash->st*2+0]);
1221                 stt = LittleShort(inst[hash->st*2+1]);
1222                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
1223                 {
1224                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
1225                         sts = 0;
1226                         stt = 0;
1227                 }
1228                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
1229                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
1230         }
1231
1232         Mem_Free(md2verthash);
1233         Mem_Free(md2verthashdata);
1234
1235         // load the frames
1236         datapointer = (base + LittleLong(pinmodel->ofs_frames));
1237         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
1238         {
1239                 int k;
1240                 trivertx_t *v;
1241                 trivertx_t *out;
1242                 pinframe = (md2frame_t *)datapointer;
1243                 datapointer += sizeof(md2frame_t);
1244                 // store the frame scale/translate into the appropriate array
1245                 for (j = 0;j < 3;j++)
1246                 {
1247                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
1248                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
1249                 }
1250                 // convert the vertices
1251                 v = (trivertx_t *)datapointer;
1252                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
1253                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
1254                         out[k] = v[vertremap[k]];
1255                 datapointer += numxyz * sizeof(trivertx_t);
1256
1257                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1258                 loadmodel->animscenes[i].firstframe = i;
1259                 loadmodel->animscenes[i].framecount = 1;
1260                 loadmodel->animscenes[i].framerate = 10;
1261                 loadmodel->animscenes[i].loop = true;
1262         }
1263
1264         Mem_Free(vertremap);
1265
1266         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1267         Mod_Alias_CalculateBoundingBox();
1268         Mod_Alias_Mesh_CompileFrameZero();
1269
1270         surface = loadmodel->data_surfaces;
1271         surface->texture = loadmodel->data_textures;
1272         surface->num_firsttriangle = 0;
1273         surface->num_triangles = loadmodel->surfmesh.num_triangles;
1274         surface->num_firstvertex = 0;
1275         surface->num_vertices = loadmodel->surfmesh.num_vertices;
1276
1277         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1278 }
1279
1280 void Mod_IDP3_Load(model_t *mod, void *buffer, void *bufferend)
1281 {
1282         int i, j, k, version, meshvertices, meshtriangles;
1283         unsigned char *data;
1284         msurface_t *surface;
1285         md3modelheader_t *pinmodel;
1286         md3frameinfo_t *pinframe;
1287         md3mesh_t *pinmesh;
1288         md3tag_t *pintag;
1289         skinfile_t *skinfiles;
1290
1291         pinmodel = (md3modelheader_t *)buffer;
1292
1293         if (memcmp(pinmodel->identifier, "IDP3", 4))
1294                 Host_Error ("%s is not a MD3 (IDP3) file", loadmodel->name);
1295         version = LittleLong (pinmodel->version);
1296         if (version != MD3VERSION)
1297                 Host_Error ("%s has wrong version number (%i should be %i)",
1298                         loadmodel->name, version, MD3VERSION);
1299
1300         skinfiles = Mod_LoadSkinFiles();
1301         if (loadmodel->numskins < 1)
1302                 loadmodel->numskins = 1;
1303
1304         loadmodel->type = mod_alias;
1305         loadmodel->DrawSky = NULL;
1306         loadmodel->Draw = R_Q1BSP_Draw;
1307         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1308         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1309         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1310         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1311         loadmodel->flags = LittleLong(pinmodel->flags);
1312         loadmodel->synctype = ST_RAND;
1313
1314         // set up some global info about the model
1315         loadmodel->numframes = LittleLong(pinmodel->num_frames);
1316         loadmodel->num_surfaces = LittleLong(pinmodel->num_meshes);
1317
1318         // make skinscenes for the skins (no groups)
1319         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1320         for (i = 0;i < loadmodel->numskins;i++)
1321         {
1322                 loadmodel->skinscenes[i].firstframe = i;
1323                 loadmodel->skinscenes[i].framecount = 1;
1324                 loadmodel->skinscenes[i].loop = true;
1325                 loadmodel->skinscenes[i].framerate = 10;
1326         }
1327
1328         // load frameinfo
1329         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
1330         for (i = 0, pinframe = (md3frameinfo_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_frameinfo));i < loadmodel->numframes;i++, pinframe++)
1331         {
1332                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
1333                 loadmodel->animscenes[i].firstframe = i;
1334                 loadmodel->animscenes[i].framecount = 1;
1335                 loadmodel->animscenes[i].framerate = 10;
1336                 loadmodel->animscenes[i].loop = true;
1337         }
1338
1339         // load tags
1340         loadmodel->num_tagframes = loadmodel->numframes;
1341         loadmodel->num_tags = LittleLong(pinmodel->num_tags);
1342         loadmodel->data_tags = (aliastag_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_tagframes * loadmodel->num_tags * sizeof(aliastag_t));
1343         for (i = 0, pintag = (md3tag_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_tags));i < loadmodel->num_tagframes * loadmodel->num_tags;i++, pintag++)
1344         {
1345                 strlcpy(loadmodel->data_tags[i].name, pintag->name, sizeof(loadmodel->data_tags[i].name));
1346                 for (j = 0;j < 9;j++)
1347                         loadmodel->data_tags[i].matrixgl[j] = LittleFloat(pintag->rotationmatrix[j]);
1348                 for (j = 0;j < 3;j++)
1349                         loadmodel->data_tags[i].matrixgl[9+j] = LittleFloat(pintag->origin[j]);
1350                 //Con_Printf("model \"%s\" frame #%i tag #%i \"%s\"\n", loadmodel->name, i / loadmodel->num_tags, i % loadmodel->num_tags, loadmodel->data_tags[i].name);
1351         }
1352
1353         // load meshes
1354         meshvertices = 0;
1355         meshtriangles = 0;
1356         for (i = 0, pinmesh = (md3mesh_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->num_surfaces;i++, pinmesh = (md3mesh_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_end)))
1357         {
1358                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1359                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1360                 if (LittleLong(pinmesh->num_frames) != loadmodel->numframes)
1361                         Host_Error("Mod_IDP3_Load: mesh numframes differs from header");
1362                 meshvertices += LittleLong(pinmesh->num_vertices);
1363                 meshtriangles += LittleLong(pinmesh->num_triangles);
1364         }
1365
1366         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1367         loadmodel->num_textures = loadmodel->num_surfaces;
1368         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * sizeof(float[2]) + meshvertices * loadmodel->numframes * sizeof(md3vertex_t));
1369         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1370         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1371         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1372         loadmodel->surfmesh.num_vertices = meshvertices;
1373         loadmodel->surfmesh.num_triangles = meshtriangles;
1374         loadmodel->surfmesh.num_morphframes = loadmodel->numframes; // TODO: remove?
1375         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1376         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1377         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1378         loadmodel->surfmesh.data_morphmd3vertex = (md3vertex_t *)data;data += meshvertices * loadmodel->numframes * sizeof(md3vertex_t);
1379
1380         meshvertices = 0;
1381         meshtriangles = 0;
1382         for (i = 0, pinmesh = (md3mesh_t *)((unsigned char *)pinmodel + LittleLong(pinmodel->lump_meshes));i < loadmodel->num_surfaces;i++, pinmesh = (md3mesh_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_end)))
1383         {
1384                 if (memcmp(pinmesh->identifier, "IDP3", 4))
1385                         Host_Error("Mod_IDP3_Load: invalid mesh identifier (not IDP3)");
1386                 loadmodel->surfacelist[i] = i;
1387                 surface = loadmodel->data_surfaces + i;
1388                 surface->texture = loadmodel->data_textures + i;
1389                 surface->num_firsttriangle = meshtriangles;
1390                 surface->num_triangles = LittleLong(pinmesh->num_triangles);
1391                 surface->num_firstvertex = meshvertices;
1392                 surface->num_vertices = LittleLong(pinmesh->num_vertices);
1393                 meshvertices += surface->num_vertices;
1394                 meshtriangles += surface->num_triangles;
1395
1396                 for (j = 0;j < surface->num_triangles * 3;j++)
1397                         loadmodel->surfmesh.data_element3i[j + surface->num_firsttriangle * 3] = surface->num_firstvertex + LittleLong(((int *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_elements)))[j]);
1398                 for (j = 0;j < surface->num_vertices;j++)
1399                 {
1400                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 0] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 0]);
1401                         loadmodel->surfmesh.data_texcoordtexture2f[(j + surface->num_firstvertex) * 2 + 1] = LittleFloat(((float *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_texcoords)))[j * 2 + 1]);
1402                 }
1403                 for (j = 0;j < loadmodel->numframes;j++)
1404                 {
1405                         const md3vertex_t *in = (md3vertex_t *)((unsigned char *)pinmesh + LittleLong(pinmesh->lump_framevertices)) + j * surface->num_vertices;
1406                         md3vertex_t *out = loadmodel->surfmesh.data_morphmd3vertex + surface->num_firstvertex + j * loadmodel->surfmesh.num_vertices;
1407                         for (k = 0;k < surface->num_vertices;k++, in++, out++)
1408                         {
1409                                 out->origin[0] = LittleShort(in->origin[0]);
1410                                 out->origin[1] = LittleShort(in->origin[1]);
1411                                 out->origin[2] = LittleShort(in->origin[2]);
1412                                 out->pitch = in->pitch;
1413                                 out->yaw = in->yaw;
1414                         }
1415                 }
1416
1417                 if (LittleLong(pinmesh->num_shaders) >= 1)
1418                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, pinmesh->name, ((md3shader_t *)((unsigned char *) pinmesh + LittleLong(pinmesh->lump_shaders)))->name);
1419                 else
1420                         for (j = 0;j < loadmodel->numskins;j++)
1421                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1422
1423                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
1424         }
1425         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1426         Mod_Alias_Mesh_CompileFrameZero();
1427         Mod_Alias_CalculateBoundingBox();
1428         Mod_FreeSkinFiles(skinfiles);
1429
1430         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1431 }
1432
1433 void Mod_ZYMOTICMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1434 {
1435         zymtype1header_t *pinmodel, *pheader;
1436         unsigned char *pbase;
1437         int i, j, k, numposes, meshvertices, meshtriangles, *bonecount, *vertbonecounts, count, *renderlist, *renderlistend, *outelements;
1438         float modelradius, corner[2], *poses, *intexcoord2f, *outtexcoord2f, *bonepose;
1439         zymvertex_t *verts, *vertdata;
1440         zymscene_t *scene;
1441         zymbone_t *bone;
1442         char *shadername;
1443         skinfile_t *skinfiles;
1444         unsigned char *data;
1445         msurface_t *surface;
1446
1447         pinmodel = (zymtype1header_t *)buffer;
1448         pbase = (unsigned char *)buffer;
1449         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
1450                 Host_Error ("Mod_ZYMOTICMODEL_Load: %s is not a zymotic model", loadmodel->name);
1451         if (BigLong(pinmodel->type) != 1)
1452                 Host_Error ("Mod_ZYMOTICMODEL_Load: only type 1 (skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1453
1454         loadmodel->type = mod_alias;
1455         loadmodel->flags = 0; // there are no flags on zym models
1456         loadmodel->synctype = ST_RAND;
1457
1458         // byteswap header
1459         pheader = pinmodel;
1460         pheader->type = BigLong(pinmodel->type);
1461         pheader->filesize = BigLong(pinmodel->filesize);
1462         pheader->mins[0] = BigFloat(pinmodel->mins[0]);
1463         pheader->mins[1] = BigFloat(pinmodel->mins[1]);
1464         pheader->mins[2] = BigFloat(pinmodel->mins[2]);
1465         pheader->maxs[0] = BigFloat(pinmodel->maxs[0]);
1466         pheader->maxs[1] = BigFloat(pinmodel->maxs[1]);
1467         pheader->maxs[2] = BigFloat(pinmodel->maxs[2]);
1468         pheader->radius = BigFloat(pinmodel->radius);
1469         pheader->numverts = BigLong(pinmodel->numverts);
1470         pheader->numtris = BigLong(pinmodel->numtris);
1471         pheader->numshaders = BigLong(pinmodel->numshaders);
1472         pheader->numbones = BigLong(pinmodel->numbones);
1473         pheader->numscenes = BigLong(pinmodel->numscenes);
1474         pheader->lump_scenes.start = BigLong(pinmodel->lump_scenes.start);
1475         pheader->lump_scenes.length = BigLong(pinmodel->lump_scenes.length);
1476         pheader->lump_poses.start = BigLong(pinmodel->lump_poses.start);
1477         pheader->lump_poses.length = BigLong(pinmodel->lump_poses.length);
1478         pheader->lump_bones.start = BigLong(pinmodel->lump_bones.start);
1479         pheader->lump_bones.length = BigLong(pinmodel->lump_bones.length);
1480         pheader->lump_vertbonecounts.start = BigLong(pinmodel->lump_vertbonecounts.start);
1481         pheader->lump_vertbonecounts.length = BigLong(pinmodel->lump_vertbonecounts.length);
1482         pheader->lump_verts.start = BigLong(pinmodel->lump_verts.start);
1483         pheader->lump_verts.length = BigLong(pinmodel->lump_verts.length);
1484         pheader->lump_texcoords.start = BigLong(pinmodel->lump_texcoords.start);
1485         pheader->lump_texcoords.length = BigLong(pinmodel->lump_texcoords.length);
1486         pheader->lump_render.start = BigLong(pinmodel->lump_render.start);
1487         pheader->lump_render.length = BigLong(pinmodel->lump_render.length);
1488         pheader->lump_shaders.start = BigLong(pinmodel->lump_shaders.start);
1489         pheader->lump_shaders.length = BigLong(pinmodel->lump_shaders.length);
1490         pheader->lump_trizone.start = BigLong(pinmodel->lump_trizone.start);
1491         pheader->lump_trizone.length = BigLong(pinmodel->lump_trizone.length);
1492
1493         if (pheader->numtris < 1 || pheader->numverts < 3 || pheader->numshaders < 1)
1494         {
1495                 Con_Printf("%s has no geometry\n", loadmodel->name);
1496                 return;
1497         }
1498         if (pheader->numscenes < 1 || pheader->lump_poses.length < (int)sizeof(float[3][4]))
1499         {
1500                 Con_Printf("%s has no animations\n", loadmodel->name);
1501                 return;
1502         }
1503
1504         loadmodel->DrawSky = NULL;
1505         loadmodel->Draw = R_Q1BSP_Draw;
1506         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1507         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1508         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1509         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1510
1511         loadmodel->numframes = pheader->numscenes;
1512         loadmodel->num_surfaces = pheader->numshaders;
1513
1514         skinfiles = Mod_LoadSkinFiles();
1515         if (loadmodel->numskins < 1)
1516                 loadmodel->numskins = 1;
1517
1518         // make skinscenes for the skins (no groups)
1519         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
1520         for (i = 0;i < loadmodel->numskins;i++)
1521         {
1522                 loadmodel->skinscenes[i].firstframe = i;
1523                 loadmodel->skinscenes[i].framecount = 1;
1524                 loadmodel->skinscenes[i].loop = true;
1525                 loadmodel->skinscenes[i].framerate = 10;
1526         }
1527
1528         // model bbox
1529         modelradius = pheader->radius;
1530         for (i = 0;i < 3;i++)
1531         {
1532                 loadmodel->normalmins[i] = pheader->mins[i];
1533                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1534                 loadmodel->rotatedmins[i] = -modelradius;
1535                 loadmodel->rotatedmaxs[i] = modelradius;
1536         }
1537         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
1538         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
1539         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
1540         if (loadmodel->yawmaxs[0] > modelradius)
1541                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
1542         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
1543         loadmodel->yawmins[2] = loadmodel->normalmins[2];
1544         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
1545         loadmodel->radius = modelradius;
1546         loadmodel->radius2 = modelradius * modelradius;
1547
1548         // go through the lumps, swapping things
1549
1550         //zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
1551         loadmodel->animscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
1552         scene = (zymscene_t *) (pheader->lump_scenes.start + pbase);
1553         numposes = pheader->lump_poses.length / pheader->numbones / sizeof(float[3][4]);
1554         for (i = 0;i < pheader->numscenes;i++)
1555         {
1556                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
1557                 loadmodel->animscenes[i].firstframe = BigLong(scene->start);
1558                 loadmodel->animscenes[i].framecount = BigLong(scene->length);
1559                 loadmodel->animscenes[i].framerate = BigFloat(scene->framerate);
1560                 loadmodel->animscenes[i].loop = (BigLong(scene->flags) & ZYMSCENEFLAG_NOLOOP) == 0;
1561                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= (unsigned int) numposes)
1562                         Host_Error("%s scene->firstframe (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, numposes);
1563                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > (unsigned int) numposes)
1564                         Host_Error("%s scene->firstframe (%i) + framecount (%i) >= numposes (%i)", loadmodel->name, loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
1565                 if (loadmodel->animscenes[i].framerate < 0)
1566                         Host_Error("%s scene->framerate (%f) < 0", loadmodel->name, loadmodel->animscenes[i].framerate);
1567                 scene++;
1568         }
1569
1570         //zymlump_t lump_bones; // zymbone_t bone[numbones];
1571         loadmodel->num_bones = pheader->numbones;
1572         loadmodel->data_bones = (aliasbone_t *)Mem_Alloc(loadmodel->mempool, pheader->numbones * sizeof(aliasbone_t));
1573         bone = (zymbone_t *) (pheader->lump_bones.start + pbase);
1574         for (i = 0;i < pheader->numbones;i++)
1575         {
1576                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1577                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1578                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1579                 if (loadmodel->data_bones[i].parent >= i)
1580                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1581         }
1582
1583         //zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
1584         vertbonecounts = (int *)Mem_Alloc(loadmodel->mempool, pheader->numverts * sizeof(int));
1585         bonecount = (int *) (pheader->lump_vertbonecounts.start + pbase);
1586         for (i = 0;i < pheader->numverts;i++)
1587         {
1588                 vertbonecounts[i] = BigLong(bonecount[i]);
1589                 if (vertbonecounts[i] != 1)
1590                         Host_Error("%s bonecount[%i] != 1 (vertex weight support is impossible in this format)", loadmodel->name, i);
1591         }
1592
1593         loadmodel->num_poses = pheader->lump_poses.length / sizeof(float[3][4]);
1594
1595         meshvertices = pheader->numverts;
1596         meshtriangles = pheader->numtris;
1597
1598         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
1599         loadmodel->num_textures = loadmodel->num_surfaces;
1600         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * sizeof(float[14]) + meshvertices * sizeof(int[4]) + meshvertices * sizeof(float[4]) + loadmodel->num_poses * sizeof(float[12]) + loadmodel->num_bones * sizeof(float[12]));
1601         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1602         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1603         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1604         loadmodel->surfmesh.num_vertices = meshvertices;
1605         loadmodel->surfmesh.num_triangles = meshtriangles;
1606         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1607         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1608         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1609         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1610         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1611         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1612         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1613         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1614         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1615         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1616         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1617
1618         //zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
1619         poses = (float *) (pheader->lump_poses.start + pbase);
1620         for (i = 0;i < pheader->lump_poses.length / 4;i++)
1621                 loadmodel->data_poses[i] = BigFloat(poses[i]);
1622
1623         //zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
1624         verts = (zymvertex_t *)Mem_Alloc(loadmodel->mempool, pheader->lump_verts.length);
1625         vertdata = (zymvertex_t *) (pheader->lump_verts.start + pbase);
1626         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1627         // (converting from weight-blending skeletal animation to
1628         //  deformation-based skeletal animation)
1629         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1630         for (i = 0;i < loadmodel->num_bones;i++)
1631         {
1632                 const float *m = loadmodel->data_poses + i * 12;
1633                 if (loadmodel->data_bones[i].parent >= 0)
1634                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1635                 else
1636                         for (k = 0;k < 12;k++)
1637                                 bonepose[12*i+k] = m[k];
1638         }
1639         for (j = 0;j < pheader->numverts;j++)
1640         {
1641                 // this format really should have had a per vertexweight weight value...
1642                 // but since it does not, the weighting is completely ignored and
1643                 // only one weight is allowed per vertex
1644                 int boneindex = BigLong(vertdata[j].bonenum);
1645                 const float *m = bonepose + 12 * boneindex;
1646                 float relativeorigin[3];
1647                 relativeorigin[0] = BigFloat(vertdata[j].origin[0]);
1648                 relativeorigin[1] = BigFloat(vertdata[j].origin[1]);
1649                 relativeorigin[2] = BigFloat(vertdata[j].origin[2]);
1650                 // transform the vertex bone weight into the base mesh
1651                 loadmodel->surfmesh.data_vertex3f[j*3+0] = relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + m[ 3];
1652                 loadmodel->surfmesh.data_vertex3f[j*3+1] = relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + m[ 7];
1653                 loadmodel->surfmesh.data_vertex3f[j*3+2] = relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + m[11];
1654                 // store the weight as the primary weight on this vertex
1655                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1656                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = 1;
1657         }
1658         Z_Free(bonepose);
1659         // normals and tangents are calculated after elements are loaded
1660
1661         //zymlump_t lump_texcoords; // float texcoords[numvertices][2];
1662         outtexcoord2f = loadmodel->surfmesh.data_texcoordtexture2f;
1663         intexcoord2f = (float *) (pheader->lump_texcoords.start + pbase);
1664         for (i = 0;i < pheader->numverts;i++)
1665         {
1666                 outtexcoord2f[i*2+0] = BigFloat(intexcoord2f[i*2+0]);
1667                 // flip T coordinate for OpenGL
1668                 outtexcoord2f[i*2+1] = 1 - BigFloat(intexcoord2f[i*2+1]);
1669         }
1670
1671         //zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
1672         //loadmodel->alias.zymdata_trizone = Mem_Alloc(loadmodel->mempool, pheader->numtris);
1673         //memcpy(loadmodel->alias.zymdata_trizone, (void *) (pheader->lump_trizone.start + pbase), pheader->numtris);
1674
1675         //zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
1676         //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)
1677         // byteswap, validate, and swap winding order of tris
1678         count = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
1679         if (pheader->lump_render.length != count)
1680                 Host_Error("%s renderlist is wrong size (%i bytes, should be %i bytes)", loadmodel->name, pheader->lump_render.length, count);
1681         renderlist = (int *) (pheader->lump_render.start + pbase);
1682         renderlistend = (int *) ((unsigned char *) renderlist + pheader->lump_render.length);
1683         meshtriangles = 0;
1684         for (i = 0;i < loadmodel->num_surfaces;i++)
1685         {
1686                 int firstvertex, lastvertex;
1687                 if (renderlist >= renderlistend)
1688                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1689                 count = BigLong(*renderlist);renderlist++;
1690                 if (renderlist + count * 3 > renderlistend || (i == pheader->numshaders - 1 && renderlist + count * 3 != renderlistend))
1691                         Host_Error("%s corrupt renderlist (wrong size)", loadmodel->name);
1692
1693                 loadmodel->surfacelist[i] = i;
1694                 surface = loadmodel->data_surfaces + i;
1695                 surface->texture = loadmodel->data_textures + i;
1696                 surface->num_firsttriangle = meshtriangles;
1697                 surface->num_triangles = count;
1698                 meshtriangles += surface->num_triangles;
1699
1700                 // load the elements
1701                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1702                 for (j = 0;j < surface->num_triangles;j++, renderlist += 3)
1703                 {
1704                         outelements[j*3+2] = BigLong(renderlist[0]);
1705                         outelements[j*3+1] = BigLong(renderlist[1]);
1706                         outelements[j*3+0] = BigLong(renderlist[2]);
1707                 }
1708                 // validate the elements and find the used vertex range
1709                 firstvertex = meshvertices;
1710                 lastvertex = 0;
1711                 for (j = 0;j < surface->num_triangles * 3;j++)
1712                 {
1713                         if ((unsigned int)outelements[j] >= (unsigned int)meshvertices)
1714                                 Host_Error("%s corrupt renderlist (out of bounds index)", loadmodel->name);
1715                         firstvertex = min(firstvertex, outelements[j]);
1716                         lastvertex = max(lastvertex, outelements[j]);
1717                 }
1718                 surface->num_firstvertex = firstvertex;
1719                 surface->num_vertices = lastvertex + 1 - firstvertex;
1720
1721                 // since zym models do not have named sections, reuse their shader
1722                 // name as the section name
1723                 shadername = (char *) (pheader->lump_shaders.start + pbase) + i * 32;
1724                 if (shadername[0])
1725                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, shadername, shadername);
1726                 else
1727                         for (j = 0;j < loadmodel->numskins;j++)
1728                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
1729         }
1730         Mod_FreeSkinFiles(skinfiles);
1731         Mem_Free(vertbonecounts);
1732         Mem_Free(verts);
1733
1734         // compute all the mesh information that was not loaded from the file
1735         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
1736         Mod_BuildBaseBonePoses();
1737         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
1738         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
1739         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
1740
1741         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
1742 }
1743
1744 void Mod_DARKPLACESMODEL_Load(model_t *mod, void *buffer, void *bufferend)
1745 {
1746         dpmheader_t *pheader;
1747         dpmframe_t *frame;
1748         dpmbone_t *bone;
1749         dpmmesh_t *dpmmesh;
1750         unsigned char *pbase;
1751         int i, j, k, meshvertices, meshtriangles;
1752         skinfile_t *skinfiles;
1753         unsigned char *data;
1754         float *bonepose;
1755
1756         pheader = (dpmheader_t *)buffer;
1757         pbase = (unsigned char *)buffer;
1758         if (memcmp(pheader->id, "DARKPLACESMODEL\0", 16))
1759                 Host_Error ("Mod_DARKPLACESMODEL_Load: %s is not a darkplaces model", loadmodel->name);
1760         if (BigLong(pheader->type) != 2)
1761                 Host_Error ("Mod_DARKPLACESMODEL_Load: only type 2 (hierarchical skeletal pose) models are currently supported (name = %s)", loadmodel->name);
1762
1763         loadmodel->type = mod_alias;
1764         loadmodel->flags = 0; // there are no flags on zym models
1765         loadmodel->synctype = ST_RAND;
1766
1767         // byteswap header
1768         pheader->type = BigLong(pheader->type);
1769         pheader->filesize = BigLong(pheader->filesize);
1770         pheader->mins[0] = BigFloat(pheader->mins[0]);
1771         pheader->mins[1] = BigFloat(pheader->mins[1]);
1772         pheader->mins[2] = BigFloat(pheader->mins[2]);
1773         pheader->maxs[0] = BigFloat(pheader->maxs[0]);
1774         pheader->maxs[1] = BigFloat(pheader->maxs[1]);
1775         pheader->maxs[2] = BigFloat(pheader->maxs[2]);
1776         pheader->yawradius = BigFloat(pheader->yawradius);
1777         pheader->allradius = BigFloat(pheader->allradius);
1778         pheader->num_bones = BigLong(pheader->num_bones);
1779         pheader->num_meshs = BigLong(pheader->num_meshs);
1780         pheader->num_frames = BigLong(pheader->num_frames);
1781         pheader->ofs_bones = BigLong(pheader->ofs_bones);
1782         pheader->ofs_meshs = BigLong(pheader->ofs_meshs);
1783         pheader->ofs_frames = BigLong(pheader->ofs_frames);
1784
1785         if (pheader->num_bones < 1 || pheader->num_meshs < 1)
1786         {
1787                 Con_Printf("%s has no geometry\n", loadmodel->name);
1788                 return;
1789         }
1790         if (pheader->num_frames < 1)
1791         {
1792                 Con_Printf("%s has no frames\n", loadmodel->name);
1793                 return;
1794         }
1795
1796         loadmodel->DrawSky = NULL;
1797         loadmodel->Draw = R_Q1BSP_Draw;
1798         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
1799         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
1800         loadmodel->DrawLight = R_Q1BSP_DrawLight;
1801         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
1802
1803         // model bbox
1804         for (i = 0;i < 3;i++)
1805         {
1806                 loadmodel->normalmins[i] = pheader->mins[i];
1807                 loadmodel->normalmaxs[i] = pheader->maxs[i];
1808                 loadmodel->yawmins[i] = i != 2 ? -pheader->yawradius : pheader->mins[i];
1809                 loadmodel->yawmaxs[i] = i != 2 ? pheader->yawradius : pheader->maxs[i];
1810                 loadmodel->rotatedmins[i] = -pheader->allradius;
1811                 loadmodel->rotatedmaxs[i] = pheader->allradius;
1812         }
1813         loadmodel->radius = pheader->allradius;
1814         loadmodel->radius2 = pheader->allradius * pheader->allradius;
1815
1816         // load external .skin files if present
1817         skinfiles = Mod_LoadSkinFiles();
1818         if (loadmodel->numskins < 1)
1819                 loadmodel->numskins = 1;
1820
1821         meshvertices = 0;
1822         meshtriangles = 0;
1823
1824         // gather combined statistics from the meshes
1825         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1826         for (i = 0;i < (int)pheader->num_meshs;i++)
1827         {
1828                 int numverts = BigLong(dpmmesh->num_verts);
1829                 meshvertices += numverts;;
1830                 meshtriangles += BigLong(dpmmesh->num_tris);
1831                 dpmmesh++;
1832         }
1833
1834         loadmodel->numframes = pheader->num_frames;
1835         loadmodel->num_bones = pheader->num_bones;
1836         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
1837         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = pheader->num_meshs;
1838         // do most allocations as one merged chunk
1839         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(int[4]) + sizeof(float[4])) + loadmodel->num_poses * sizeof(float[12]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
1840         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
1841         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
1842         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
1843         loadmodel->surfmesh.num_vertices = meshvertices;
1844         loadmodel->surfmesh.num_triangles = meshtriangles;
1845         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1846         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
1847         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
1848         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1849         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
1850         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
1851         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
1852         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
1853         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
1854         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
1855         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
1856         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
1857         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
1858         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
1859
1860         for (i = 0;i < loadmodel->numskins;i++)
1861         {
1862                 loadmodel->skinscenes[i].firstframe = i;
1863                 loadmodel->skinscenes[i].framecount = 1;
1864                 loadmodel->skinscenes[i].loop = true;
1865                 loadmodel->skinscenes[i].framerate = 10;
1866         }
1867
1868         // load the bone info
1869         bone = (dpmbone_t *) (pbase + pheader->ofs_bones);
1870         for (i = 0;i < loadmodel->num_bones;i++)
1871         {
1872                 memcpy(loadmodel->data_bones[i].name, bone[i].name, sizeof(bone[i].name));
1873                 loadmodel->data_bones[i].flags = BigLong(bone[i].flags);
1874                 loadmodel->data_bones[i].parent = BigLong(bone[i].parent);
1875                 if (loadmodel->data_bones[i].parent >= i)
1876                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, i, i);
1877         }
1878
1879         // load the frames
1880         frame = (dpmframe_t *) (pbase + pheader->ofs_frames);
1881         for (i = 0;i < loadmodel->numframes;i++)
1882         {
1883                 const float *poses;
1884                 memcpy(loadmodel->animscenes[i].name, frame->name, sizeof(frame->name));
1885                 loadmodel->animscenes[i].firstframe = i;
1886                 loadmodel->animscenes[i].framecount = 1;
1887                 loadmodel->animscenes[i].loop = true;
1888                 loadmodel->animscenes[i].framerate = 10;
1889                 // load the bone poses for this frame
1890                 poses = (float *) (pbase + BigLong(frame->ofs_bonepositions));
1891                 for (j = 0;j < loadmodel->num_bones*12;j++)
1892                         loadmodel->data_poses[i * loadmodel->num_bones*12 + j] = BigFloat(poses[j]);
1893                 // stuff not processed here: mins, maxs, yawradius, allradius
1894                 frame++;
1895         }
1896
1897         // load the meshes now
1898         dpmmesh = (dpmmesh_t *) (pbase + pheader->ofs_meshs);
1899         meshvertices = 0;
1900         meshtriangles = 0;
1901         // reconstruct frame 0 matrices to allow reconstruction of the base mesh
1902         // (converting from weight-blending skeletal animation to
1903         //  deformation-based skeletal animation)
1904         bonepose = (float *)Z_Malloc(loadmodel->num_bones * sizeof(float[12]));
1905         for (i = 0;i < loadmodel->num_bones;i++)
1906         {
1907                 const float *m = loadmodel->data_poses + i * 12;
1908                 if (loadmodel->data_bones[i].parent >= 0)
1909                         R_ConcatTransforms(bonepose + 12 * loadmodel->data_bones[i].parent, m, bonepose + 12 * i);
1910                 else
1911                         for (k = 0;k < 12;k++)
1912                                 bonepose[12*i+k] = m[k];
1913         }
1914         for (i = 0;i < loadmodel->num_surfaces;i++, dpmmesh++)
1915         {
1916                 const int *inelements;
1917                 int *outelements;
1918                 const float *intexcoord;
1919                 msurface_t *surface;
1920
1921                 loadmodel->surfacelist[i] = i;
1922                 surface = loadmodel->data_surfaces + i;
1923                 surface->texture = loadmodel->data_textures + i;
1924                 surface->num_firsttriangle = meshtriangles;
1925                 surface->num_triangles = BigLong(dpmmesh->num_tris);
1926                 surface->num_firstvertex = meshvertices;
1927                 surface->num_vertices = BigLong(dpmmesh->num_verts);
1928                 meshvertices += surface->num_vertices;
1929                 meshtriangles += surface->num_triangles;
1930
1931                 inelements = (int *) (pbase + BigLong(dpmmesh->ofs_indices));
1932                 outelements = loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3;
1933                 for (j = 0;j < surface->num_triangles;j++)
1934                 {
1935                         // swap element order to flip triangles, because Quake uses clockwise (rare) and dpm uses counterclockwise (standard)
1936                         outelements[0] = surface->num_firstvertex + BigLong(inelements[2]);
1937                         outelements[1] = surface->num_firstvertex + BigLong(inelements[1]);
1938                         outelements[2] = surface->num_firstvertex + BigLong(inelements[0]);
1939                         inelements += 3;
1940                         outelements += 3;
1941                 }
1942
1943                 intexcoord = (float *) (pbase + BigLong(dpmmesh->ofs_texcoords));
1944                 for (j = 0;j < surface->num_vertices*2;j++)
1945                         loadmodel->surfmesh.data_texcoordtexture2f[j + surface->num_firstvertex * 2] = BigFloat(intexcoord[j]);
1946
1947                 data = (unsigned char *) (pbase + BigLong(dpmmesh->ofs_verts));
1948                 for (j = surface->num_firstvertex;j < surface->num_firstvertex + surface->num_vertices;j++)
1949                 {
1950                         float sum;
1951                         int l;
1952                         int numweights = BigLong(((dpmvertex_t *)data)->numbones);
1953                         data += sizeof(dpmvertex_t);
1954                         for (k = 0;k < numweights;k++)
1955                         {
1956                                 const dpmbonevert_t *vert = (dpmbonevert_t *) data;
1957                                 int boneindex = BigLong(vert->bonenum);
1958                                 const float *m = bonepose + 12 * boneindex;
1959                                 float influence = BigFloat(vert->influence);
1960                                 float relativeorigin[3], relativenormal[3];
1961                                 relativeorigin[0] = BigFloat(vert->origin[0]);
1962                                 relativeorigin[1] = BigFloat(vert->origin[1]);
1963                                 relativeorigin[2] = BigFloat(vert->origin[2]);
1964                                 relativenormal[0] = BigFloat(vert->normal[0]);
1965                                 relativenormal[1] = BigFloat(vert->normal[1]);
1966                                 relativenormal[2] = BigFloat(vert->normal[2]);
1967                                 // blend the vertex bone weights into the base mesh
1968                                 loadmodel->surfmesh.data_vertex3f[j*3+0] += relativeorigin[0] * m[0] + relativeorigin[1] * m[1] + relativeorigin[2] * m[ 2] + influence * m[ 3];
1969                                 loadmodel->surfmesh.data_vertex3f[j*3+1] += relativeorigin[0] * m[4] + relativeorigin[1] * m[5] + relativeorigin[2] * m[ 6] + influence * m[ 7];
1970                                 loadmodel->surfmesh.data_vertex3f[j*3+2] += relativeorigin[0] * m[8] + relativeorigin[1] * m[9] + relativeorigin[2] * m[10] + influence * m[11];
1971                                 loadmodel->surfmesh.data_normal3f[j*3+0] += relativenormal[0] * m[0] + relativenormal[1] * m[1] + relativenormal[2] * m[ 2];
1972                                 loadmodel->surfmesh.data_normal3f[j*3+1] += relativenormal[0] * m[4] + relativenormal[1] * m[5] + relativenormal[2] * m[ 6];
1973                                 loadmodel->surfmesh.data_normal3f[j*3+2] += relativenormal[0] * m[8] + relativenormal[1] * m[9] + relativenormal[2] * m[10];
1974                                 if (!k)
1975                                 {
1976                                         // store the first (and often only) weight
1977                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+0] = influence;
1978                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+0] = boneindex;
1979                                 }
1980                                 else
1981                                 {
1982                                         // sort the new weight into this vertex's weight table
1983                                         // (which only accepts up to 4 bones per vertex)
1984                                         for (l = 0;l < 4;l++)
1985                                         {
1986                                                 if (loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] < influence)
1987                                                 {
1988                                                         // move weaker influence weights out of the way first
1989                                                         int l2;
1990                                                         for (l2 = 3;l2 > l;l2--)
1991                                                         {
1992                                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l2-1];
1993                                                                 loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[j*4+l2-1];
1994                                                         }
1995                                                         // store the new weight
1996                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] = influence;
1997                                                         loadmodel->surfmesh.data_vertexweightindex4i[j*4+l] = boneindex;
1998                                                         break;
1999                                                 }
2000                                         }
2001                                 }
2002                                 data += sizeof(dpmbonevert_t);
2003                         }
2004                         sum = 0;
2005                         for (l = 0;l < 4;l++)
2006                                 sum += loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l];
2007                         if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2008                         {
2009                                 float f = 1.0f / sum;
2010                                 for (l = 0;l < 4;l++)
2011                                         loadmodel->surfmesh.data_vertexweightinfluence4f[j*4+l] *= f;
2012                         }
2013                 }
2014
2015                 // since dpm models do not have named sections, reuse their shader name as the section name
2016                 if (dpmmesh->shadername[0])
2017                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + i, skinfiles, dpmmesh->shadername, dpmmesh->shadername);
2018                 else
2019                         for (j = 0;j < loadmodel->numskins;j++)
2020                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + i + j * loadmodel->num_surfaces, NULL);
2021
2022                 Mod_ValidateElements(loadmodel->surfmesh.data_element3i + surface->num_firsttriangle * 3, surface->num_triangles, surface->num_firstvertex, surface->num_vertices, __FILE__, __LINE__);
2023         }
2024         Z_Free(bonepose);
2025         Mod_FreeSkinFiles(skinfiles);
2026
2027         // compute all the mesh information that was not loaded from the file
2028         Mod_BuildBaseBonePoses();
2029         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2030         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2031
2032         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2033 }
2034
2035 // no idea why PSK/PSA files contain weird quaternions but they do...
2036 #define PSKQUATNEGATIONS
2037 void Mod_PSKMODEL_Load(model_t *mod, void *buffer, void *bufferend)
2038 {
2039         int i, j, index, version, recordsize, numrecords, meshvertices, meshtriangles;
2040         int numpnts, numvtxw, numfaces, nummatts, numbones, numrawweights, numanimbones, numanims, numanimkeys;
2041         fs_offset_t filesize;
2042         pskpnts_t *pnts;
2043         pskvtxw_t *vtxw;
2044         pskface_t *faces;
2045         pskmatt_t *matts;
2046         pskboneinfo_t *bones;
2047         pskrawweights_t *rawweights;
2048         pskboneinfo_t *animbones;
2049         pskaniminfo_t *anims;
2050         pskanimkeys_t *animkeys;
2051         void *animfilebuffer, *animbuffer, *animbufferend;
2052         unsigned char *data;
2053         pskchunk_t *pchunk;
2054         skinfile_t *skinfiles;
2055         char animname[MAX_QPATH];
2056
2057         pchunk = (pskchunk_t *)buffer;
2058         if (strcmp(pchunk->id, "ACTRHEAD"))
2059                 Host_Error ("Mod_PSKMODEL_Load: %s is not an Unreal Engine ActorX (.psk + .psa) model", loadmodel->name);
2060
2061         loadmodel->type = mod_alias;
2062         loadmodel->DrawSky = NULL;
2063         loadmodel->Draw = R_Q1BSP_Draw;
2064         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
2065         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
2066         loadmodel->DrawLight = R_Q1BSP_DrawLight;
2067         loadmodel->TraceBox = Mod_MDLMD2MD3_TraceBox;
2068         loadmodel->flags = 0; // there are no flags on zym models
2069         loadmodel->synctype = ST_RAND;
2070
2071         FS_StripExtension(loadmodel->name, animname, sizeof(animname));
2072         strlcat(animname, ".psa", sizeof(animname));
2073         animbuffer = animfilebuffer = FS_LoadFile(animname, loadmodel->mempool, false, &filesize);
2074         animbufferend = (void *)((unsigned char*)animbuffer + (int)filesize);
2075         if (animbuffer == NULL)
2076                 Host_Error("%s: can't find .psa file (%s)", loadmodel->name, animname);
2077
2078         numpnts = 0;
2079         pnts = NULL;
2080         numvtxw = 0;
2081         vtxw = NULL;
2082         numfaces = 0;
2083         faces = NULL;
2084         nummatts = 0;
2085         matts = NULL;
2086         numbones = 0;
2087         bones = NULL;
2088         numrawweights = 0;
2089         rawweights = NULL;
2090         numanims = 0;
2091         anims = NULL;
2092         numanimkeys = 0;
2093         animkeys = NULL;
2094
2095         while (buffer < bufferend)
2096         {
2097                 pchunk = (pskchunk_t *)buffer;
2098                 buffer = (void *)((unsigned char *)buffer + sizeof(pskchunk_t));
2099                 version = LittleLong(pchunk->version);
2100                 recordsize = LittleLong(pchunk->recordsize);
2101                 numrecords = LittleLong(pchunk->numrecords);
2102                 if (developer.integer >= 100)
2103                         Con_Printf("%s: %s %x: %i * %i = %i\n", loadmodel->name, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2104                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2105                         Con_Printf ("%s: chunk %s has unknown version %x (0x1e83b9, 0x1e9179, 0x2e, 0x12f2bc, 0x12f2f0 are currently supported), trying to load anyway!\n", loadmodel->name, pchunk->id, version);
2106                 if (!strcmp(pchunk->id, "ACTRHEAD"))
2107                 {
2108                         // nothing to do
2109                 }
2110                 else if (!strcmp(pchunk->id, "PNTS0000"))
2111                 {
2112                         pskpnts_t *p;
2113                         if (recordsize != sizeof(*p))
2114                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2115                         // byteswap in place and keep the pointer
2116                         numpnts = numrecords;
2117                         pnts = (pskpnts_t *)buffer;
2118                         for (index = 0, p = (pskpnts_t *)buffer;index < numrecords;index++, p++)
2119                         {
2120                                 p->origin[0] = LittleFloat(p->origin[0]);
2121                                 p->origin[1] = LittleFloat(p->origin[1]);
2122                                 p->origin[2] = LittleFloat(p->origin[2]);
2123                         }
2124                         buffer = p;
2125                 }
2126                 else if (!strcmp(pchunk->id, "VTXW0000"))
2127                 {
2128                         pskvtxw_t *p;
2129                         if (recordsize != sizeof(*p))
2130                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2131                         // byteswap in place and keep the pointer
2132                         numvtxw = numrecords;
2133                         vtxw = (pskvtxw_t *)buffer;
2134                         for (index = 0, p = (pskvtxw_t *)buffer;index < numrecords;index++, p++)
2135                         {
2136                                 p->pntsindex = LittleShort(p->pntsindex);
2137                                 p->texcoord[0] = LittleFloat(p->texcoord[0]);
2138                                 p->texcoord[1] = LittleFloat(p->texcoord[1]);
2139                                 if (p->pntsindex >= numpnts)
2140                                 {
2141                                         Con_Printf("%s: vtxw->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2142                                         p->pntsindex = 0;
2143                                 }
2144                         }
2145                         buffer = p;
2146                 }
2147                 else if (!strcmp(pchunk->id, "FACE0000"))
2148                 {
2149                         pskface_t *p;
2150                         if (recordsize != sizeof(*p))
2151                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2152                         // byteswap in place and keep the pointer
2153                         numfaces = numrecords;
2154                         faces = (pskface_t *)buffer;
2155                         for (index = 0, p = (pskface_t *)buffer;index < numrecords;index++, p++)
2156                         {
2157                                 p->vtxwindex[0] = LittleShort(p->vtxwindex[0]);
2158                                 p->vtxwindex[1] = LittleShort(p->vtxwindex[1]);
2159                                 p->vtxwindex[2] = LittleShort(p->vtxwindex[2]);
2160                                 p->group = LittleLong(p->group);
2161                                 if (p->vtxwindex[0] >= numvtxw)
2162                                 {
2163                                         Con_Printf("%s: face->vtxwindex[0] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[0], numvtxw);
2164                                         p->vtxwindex[0] = 0;
2165                                 }
2166                                 if (p->vtxwindex[1] >= numvtxw)
2167                                 {
2168                                         Con_Printf("%s: face->vtxwindex[1] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[1], numvtxw);
2169                                         p->vtxwindex[1] = 0;
2170                                 }
2171                                 if (p->vtxwindex[2] >= numvtxw)
2172                                 {
2173                                         Con_Printf("%s: face->vtxwindex[2] %i >= numvtxw %i\n", loadmodel->name, p->vtxwindex[2], numvtxw);
2174                                         p->vtxwindex[2] = 0;
2175                                 }
2176                         }
2177                         buffer = p;
2178                 }
2179                 else if (!strcmp(pchunk->id, "MATT0000"))
2180                 {
2181                         pskmatt_t *p;
2182                         if (recordsize != sizeof(*p))
2183                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2184                         // byteswap in place and keep the pointer
2185                         nummatts = numrecords;
2186                         matts = (pskmatt_t *)buffer;
2187                         for (index = 0, p = (pskmatt_t *)buffer;index < numrecords;index++, p++)
2188                         {
2189                                 // nothing to do
2190                         }
2191                         buffer = p;
2192                 }
2193                 else if (!strcmp(pchunk->id, "REFSKELT"))
2194                 {
2195                         pskboneinfo_t *p;
2196                         if (recordsize != sizeof(*p))
2197                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2198                         // byteswap in place and keep the pointer
2199                         numbones = numrecords;
2200                         bones = (pskboneinfo_t *)buffer;
2201                         for (index = 0, p = (pskboneinfo_t *)buffer;index < numrecords;index++, p++)
2202                         {
2203                                 p->numchildren = LittleLong(p->numchildren);
2204                                 p->parent = LittleLong(p->parent);
2205                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2206                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2207                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2208                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2209                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2210                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2211                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2212                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2213                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2214                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2215                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2216 #ifdef PSKQUATNEGATIONS
2217                                 if (index)
2218                                 {
2219                                         p->basepose.quat[0] *= -1;
2220                                         p->basepose.quat[1] *= -1;
2221                                         p->basepose.quat[2] *= -1;
2222                                 }
2223                                 else
2224                                 {
2225                                         p->basepose.quat[0] *=  1;
2226                                         p->basepose.quat[1] *= -1;
2227                                         p->basepose.quat[2] *=  1;
2228                                 }
2229 #endif
2230                                 if (p->parent < 0 || p->parent >= numbones)
2231                                 {
2232                                         Con_Printf("%s: bone->parent %i >= numbones %i\n", loadmodel->name, p->parent, numbones);
2233                                         p->parent = 0;
2234                                 }
2235                         }
2236                         buffer = p;
2237                 }
2238                 else if (!strcmp(pchunk->id, "RAWWEIGHTS"))
2239                 {
2240                         pskrawweights_t *p;
2241                         if (recordsize != sizeof(*p))
2242                                 Host_Error("%s: %s has unsupported recordsize", loadmodel->name, pchunk->id);
2243                         // byteswap in place and keep the pointer
2244                         numrawweights = numrecords;
2245                         rawweights = (pskrawweights_t *)buffer;
2246                         for (index = 0, p = (pskrawweights_t *)buffer;index < numrecords;index++, p++)
2247                         {
2248                                 p->weight = LittleFloat(p->weight);
2249                                 p->pntsindex = LittleLong(p->pntsindex);
2250                                 p->boneindex = LittleLong(p->boneindex);
2251                                 if (p->pntsindex < 0 || p->pntsindex >= numpnts)
2252                                 {
2253                                         Con_Printf("%s: weight->pntsindex %i >= numpnts %i\n", loadmodel->name, p->pntsindex, numpnts);
2254                                         p->pntsindex = 0;
2255                                 }
2256                                 if (p->boneindex < 0 || p->boneindex >= numbones)
2257                                 {
2258                                         Con_Printf("%s: weight->boneindex %i >= numbones %i\n", loadmodel->name, p->boneindex, numbones);
2259                                         p->boneindex = 0;
2260                                 }
2261                         }
2262                         buffer = p;
2263                 }
2264         }
2265
2266         while (animbuffer < animbufferend)
2267         {
2268                 pchunk = (pskchunk_t *)animbuffer;
2269                 animbuffer = (void *)((unsigned char *)animbuffer + sizeof(pskchunk_t));
2270                 version = LittleLong(pchunk->version);
2271                 recordsize = LittleLong(pchunk->recordsize);
2272                 numrecords = LittleLong(pchunk->numrecords);
2273                 if (developer.integer >= 100)
2274                         Con_Printf("%s: %s %x: %i * %i = %i\n", animname, pchunk->id, version, recordsize, numrecords, recordsize * numrecords);
2275                 if (version != 0x1e83b9 && version != 0x1e9179 && version != 0x2e && version != 0x12f2bc && version != 0x12f2f0)
2276                         Con_Printf ("%s: chunk %s has unknown version %x (0x1e83b9, 0x1e9179, 0x2e, 0x12f2bc, 0x12f2f0 are currently supported), trying to load anyway!\n", animname, pchunk->id, version);
2277                 if (!strcmp(pchunk->id, "ANIMHEAD"))
2278                 {
2279                         // nothing to do
2280                 }
2281                 else if (!strcmp(pchunk->id, "BONENAMES"))
2282                 {
2283                         pskboneinfo_t *p;
2284                         if (recordsize != sizeof(*p))
2285                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2286                         // byteswap in place and keep the pointer
2287                         numanimbones = numrecords;
2288                         animbones = (pskboneinfo_t *)animbuffer;
2289                         // NOTE: supposedly psa does not need to match the psk model, the
2290                         // bones missing from the psa would simply use their base
2291                         // positions from the psk, but this is hard for me to implement
2292                         // and people can easily make animations that match.
2293                         if (numanimbones != numbones)
2294                                 Host_Error("%s: this loader only supports animations with the same bones as the mesh", loadmodel->name);
2295                         for (index = 0, p = (pskboneinfo_t *)animbuffer;index < numrecords;index++, p++)
2296                         {
2297                                 p->numchildren = LittleLong(p->numchildren);
2298                                 p->parent = LittleLong(p->parent);
2299                                 p->basepose.quat[0] = LittleFloat(p->basepose.quat[0]);
2300                                 p->basepose.quat[1] = LittleFloat(p->basepose.quat[1]);
2301                                 p->basepose.quat[2] = LittleFloat(p->basepose.quat[2]);
2302                                 p->basepose.quat[3] = LittleFloat(p->basepose.quat[3]);
2303                                 p->basepose.origin[0] = LittleFloat(p->basepose.origin[0]);
2304                                 p->basepose.origin[1] = LittleFloat(p->basepose.origin[1]);
2305                                 p->basepose.origin[2] = LittleFloat(p->basepose.origin[2]);
2306                                 p->basepose.unknown = LittleFloat(p->basepose.unknown);
2307                                 p->basepose.size[0] = LittleFloat(p->basepose.size[0]);
2308                                 p->basepose.size[1] = LittleFloat(p->basepose.size[1]);
2309                                 p->basepose.size[2] = LittleFloat(p->basepose.size[2]);
2310 #ifdef PSKQUATNEGATIONS
2311                                 if (index)
2312                                 {
2313                                         p->basepose.quat[0] *= -1;
2314                                         p->basepose.quat[1] *= -1;
2315                                         p->basepose.quat[2] *= -1;
2316                                 }
2317                                 else
2318                                 {
2319                                         p->basepose.quat[0] *=  1;
2320                                         p->basepose.quat[1] *= -1;
2321                                         p->basepose.quat[2] *=  1;
2322                                 }
2323 #endif
2324                                 if (p->parent < 0 || p->parent >= numanimbones)
2325                                 {
2326                                         Con_Printf("%s: bone->parent %i >= numanimbones %i\n", animname, p->parent, numanimbones);
2327                                         p->parent = 0;
2328                                 }
2329                                 // check that bones are the same as in the base
2330                                 if (strcmp(p->name, bones[index].name) || p->parent != bones[index].parent)
2331                                         Host_Error("%s: this loader only supports animations with the same bones as the mesh", animname);
2332                         }
2333                         animbuffer = p;
2334                 }
2335                 else if (!strcmp(pchunk->id, "ANIMINFO"))
2336                 {
2337                         pskaniminfo_t *p;
2338                         if (recordsize != sizeof(*p))
2339                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2340                         // byteswap in place and keep the pointer
2341                         numanims = numrecords;
2342                         anims = (pskaniminfo_t *)animbuffer;
2343                         for (index = 0, p = (pskaniminfo_t *)animbuffer;index < numrecords;index++, p++)
2344                         {
2345                                 p->numbones = LittleLong(p->numbones);
2346                                 p->playtime = LittleFloat(p->playtime);
2347                                 p->fps = LittleFloat(p->fps);
2348                                 p->firstframe = LittleLong(p->firstframe);
2349                                 p->numframes = LittleLong(p->numframes);
2350                                 if (p->numbones != numbones)
2351                                         Con_Printf("%s: animinfo->numbones != numbones, trying to load anyway!\n", animname);
2352                         }
2353                         animbuffer = p;
2354                 }
2355                 else if (!strcmp(pchunk->id, "ANIMKEYS"))
2356                 {
2357                         pskanimkeys_t *p;
2358                         if (recordsize != sizeof(*p))
2359                                 Host_Error("%s: %s has unsupported recordsize", animname, pchunk->id);
2360                         numanimkeys = numrecords;
2361                         animkeys = (pskanimkeys_t *)animbuffer;
2362                         for (index = 0, p = (pskanimkeys_t *)animbuffer;index < numrecords;index++, p++)
2363                         {
2364                                 p->origin[0] = LittleFloat(p->origin[0]);
2365                                 p->origin[1] = LittleFloat(p->origin[1]);
2366                                 p->origin[2] = LittleFloat(p->origin[2]);
2367                                 p->quat[0] = LittleFloat(p->quat[0]);
2368                                 p->quat[1] = LittleFloat(p->quat[1]);
2369                                 p->quat[2] = LittleFloat(p->quat[2]);
2370                                 p->quat[3] = LittleFloat(p->quat[3]);
2371                                 p->frametime = LittleFloat(p->frametime);
2372 #ifdef PSKQUATNEGATIONS
2373                                 if (index % numbones)
2374                                 {
2375                                         p->quat[0] *= -1;
2376                                         p->quat[1] *= -1;
2377                                         p->quat[2] *= -1;
2378                                 }
2379                                 else
2380                                 {
2381                                         p->quat[0] *=  1;
2382                                         p->quat[1] *= -1;
2383                                         p->quat[2] *=  1;
2384                                 }
2385 #endif
2386                         }
2387                         animbuffer = p;
2388                         // TODO: allocate bonepose stuff
2389                 }
2390                 else
2391                         Con_Printf("%s: unknown chunk ID \"%s\"\n", animname, pchunk->id);
2392         }
2393
2394         if (!numpnts || !pnts || !numvtxw || !vtxw || !numfaces || !faces || !nummatts || !matts || !numbones || !bones || !numrawweights || !rawweights || !numanims || !anims || !numanimkeys || !animkeys)
2395                 Host_Error("%s: missing required chunks", loadmodel->name);
2396
2397         loadmodel->numframes = 0;
2398         for (index = 0;index < numanims;index++)
2399                 loadmodel->numframes += anims[index].numframes;
2400
2401         if (numanimkeys != numbones * loadmodel->numframes)
2402                 Host_Error("%s: %s has incorrect number of animation keys", animname, pchunk->id);
2403
2404         meshvertices = numvtxw;
2405         meshtriangles = numfaces;
2406
2407         // load external .skin files if present
2408         skinfiles = Mod_LoadSkinFiles();
2409         if (loadmodel->numskins < 1)
2410                 loadmodel->numskins = 1;
2411         loadmodel->num_bones = numbones;
2412         loadmodel->num_poses = loadmodel->num_bones * loadmodel->numframes;
2413         loadmodel->num_textures = loadmodel->nummodelsurfaces = loadmodel->num_surfaces = nummatts;
2414         // do most allocations as one merged chunk
2415         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t) + meshtriangles * sizeof(int[3]) + meshtriangles * sizeof(int[3]) + meshvertices * (sizeof(float[14]) + sizeof(int[4]) + sizeof(float[4])) + loadmodel->num_poses * sizeof(float[12]) + loadmodel->num_bones * sizeof(float[12]) + loadmodel->numskins * sizeof(animscene_t) + loadmodel->num_bones * sizeof(aliasbone_t) + loadmodel->numframes * sizeof(animscene_t));
2416         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
2417         loadmodel->surfacelist = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
2418         loadmodel->data_textures = (texture_t *)data;data += loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t);
2419         loadmodel->surfmesh.num_vertices = meshvertices;
2420         loadmodel->surfmesh.num_triangles = meshtriangles;
2421         loadmodel->surfmesh.data_element3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2422         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += meshtriangles * sizeof(int[3]);
2423         loadmodel->surfmesh.data_vertex3f = (float *)data;data += meshvertices * sizeof(float[3]);
2424         loadmodel->surfmesh.data_svector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2425         loadmodel->surfmesh.data_tvector3f = (float *)data;data += meshvertices * sizeof(float[3]);
2426         loadmodel->surfmesh.data_normal3f = (float *)data;data += meshvertices * sizeof(float[3]);
2427         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += meshvertices * sizeof(float[2]);
2428         loadmodel->surfmesh.data_vertexweightindex4i = (int *)data;data += meshvertices * sizeof(int[4]);
2429         loadmodel->surfmesh.data_vertexweightinfluence4f = (float *)data;data += meshvertices * sizeof(float[4]);
2430         loadmodel->data_poses = (float *)data;data += loadmodel->num_poses * sizeof(float[12]);
2431         loadmodel->data_baseboneposeinverse = (float *)data;data += loadmodel->num_bones * sizeof(float[12]);
2432         loadmodel->skinscenes = (animscene_t *)data;data += loadmodel->numskins * sizeof(animscene_t);
2433         loadmodel->data_bones = (aliasbone_t *)data;data += loadmodel->num_bones * sizeof(aliasbone_t);
2434         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
2435
2436         for (i = 0;i < loadmodel->numskins;i++)
2437         {
2438                 loadmodel->skinscenes[i].firstframe = i;
2439                 loadmodel->skinscenes[i].framecount = 1;
2440                 loadmodel->skinscenes[i].loop = true;
2441                 loadmodel->skinscenes[i].framerate = 10;
2442         }
2443
2444         // create surfaces
2445         for (index = 0, i = 0;index < nummatts;index++)
2446         {
2447                 // since psk models do not have named sections, reuse their shader name as the section name
2448                 if (matts[index].name[0])
2449                         Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + index, skinfiles, matts[index].name, matts[index].name);
2450                 else
2451                         for (j = 0;j < loadmodel->numskins;j++)
2452                                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures + index + j * loadmodel->num_surfaces, NULL);
2453                 loadmodel->surfacelist[index] = index;
2454                 loadmodel->data_surfaces[index].texture = loadmodel->data_textures + index;
2455                 loadmodel->data_surfaces[index].num_firstvertex = 0;
2456                 loadmodel->data_surfaces[index].num_vertices = loadmodel->surfmesh.num_vertices;
2457         }
2458
2459         // copy over the vertex locations and texcoords
2460         for (index = 0;index < numvtxw;index++)
2461         {
2462                 loadmodel->surfmesh.data_vertex3f[index*3+0] = pnts[vtxw[index].pntsindex].origin[0];
2463                 loadmodel->surfmesh.data_vertex3f[index*3+1] = pnts[vtxw[index].pntsindex].origin[1];
2464                 loadmodel->surfmesh.data_vertex3f[index*3+2] = pnts[vtxw[index].pntsindex].origin[2];
2465                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+0] = vtxw[index].texcoord[0];
2466                 loadmodel->surfmesh.data_texcoordtexture2f[index*2+1] = vtxw[index].texcoord[1];
2467         }
2468
2469         // loading the faces is complicated because we need to sort them into surfaces by mattindex
2470         for (index = 0;index < numfaces;index++)
2471                 loadmodel->data_surfaces[faces[index].mattindex].num_triangles++;
2472         for (index = 0, i = 0;index < nummatts;index++)
2473         {
2474                 loadmodel->data_surfaces[index].num_firsttriangle = i;
2475                 i += loadmodel->data_surfaces[index].num_triangles;
2476                 loadmodel->data_surfaces[index].num_triangles = 0;
2477         }
2478         for (index = 0;index < numfaces;index++)
2479         {
2480                 i = (loadmodel->data_surfaces[faces[index].mattindex].num_firsttriangle + loadmodel->data_surfaces[faces[index].mattindex].num_triangles++)*3;
2481                 loadmodel->surfmesh.data_element3i[i+0] = faces[index].vtxwindex[0];
2482                 loadmodel->surfmesh.data_element3i[i+1] = faces[index].vtxwindex[1];
2483                 loadmodel->surfmesh.data_element3i[i+2] = faces[index].vtxwindex[2];
2484         }
2485
2486         // copy over the bones
2487         for (index = 0;index < numbones;index++)
2488         {
2489                 strlcpy(loadmodel->data_bones[index].name, bones[index].name, sizeof(loadmodel->data_bones[index].name));
2490                 loadmodel->data_bones[index].parent = (index || bones[index].parent > 0) ? bones[index].parent : -1;
2491                 if (loadmodel->data_bones[index].parent >= index)
2492                         Host_Error("%s bone[%i].parent >= %i", loadmodel->name, index, index);
2493         }
2494
2495         // sort the psk point weights into the vertex weight tables
2496         // (which only accept up to 4 bones per vertex)
2497         for (index = 0;index < numvtxw;index++)
2498         {
2499                 int l;
2500                 float sum;
2501                 for (j = 0;j < numrawweights;j++)
2502                 {
2503                         if (rawweights[j].pntsindex == vtxw[index].pntsindex)
2504                         {
2505                                 int boneindex = rawweights[j].boneindex;
2506                                 float influence = rawweights[j].weight;
2507                                 for (l = 0;l < 4;l++)
2508                                 {
2509                                         if (loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] < influence)
2510                                         {
2511                                                 // move lower influence weights out of the way first
2512                                                 int l2;
2513                                                 for (l2 = 3;l2 > l;l2--)
2514                                                 {
2515                                                         loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2] = loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l2-1];
2516                                                         loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2] = loadmodel->surfmesh.data_vertexweightindex4i[index*4+l2-1];
2517                                                 }
2518                                                 // store the new weight
2519                                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] = influence;
2520                                                 loadmodel->surfmesh.data_vertexweightindex4i[index*4+l] = boneindex;
2521                                                 break;
2522                                         }
2523                                 }
2524                         }
2525                 }
2526                 sum = 0;
2527                 for (l = 0;l < 4;l++)
2528                         sum += loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l];
2529                 if (sum && fabs(sum - 1) > (1.0f / 256.0f))
2530                 {
2531                         float f = 1.0f / sum;
2532                         for (l = 0;l < 4;l++)
2533                                 loadmodel->surfmesh.data_vertexweightinfluence4f[index*4+l] *= f;
2534                 }
2535         }
2536
2537         // set up the animscenes based on the anims
2538         for (index = 0, i = 0;index < numanims;index++)
2539         {
2540                 for (j = 0;j < anims[index].numframes;j++, i++)
2541                 {
2542                         dpsnprintf(loadmodel->animscenes[i].name, sizeof(loadmodel->animscenes[i].name), "%s_%d", anims[index].name, j);
2543                         loadmodel->animscenes[i].firstframe = i;
2544                         loadmodel->animscenes[i].framecount = 1;
2545                         loadmodel->animscenes[i].loop = true;
2546                         loadmodel->animscenes[i].framerate = 10;
2547                 }
2548         }
2549
2550         // load the poses from the animkeys
2551         for (index = 0;index < numanimkeys;index++)
2552         {
2553                 pskanimkeys_t *k = animkeys + index;
2554                 matrix4x4_t matrix;
2555                 Matrix4x4_FromOriginQuat(&matrix, k->origin[0], k->origin[1], k->origin[2], k->quat[0], k->quat[1], k->quat[2], k->quat[3]);
2556                 Matrix4x4_ToArray12FloatD3D(&matrix, loadmodel->data_poses + index*12);
2557         }
2558         Mod_FreeSkinFiles(skinfiles);
2559         Mem_Free(animfilebuffer);
2560
2561         // compute all the mesh information that was not loaded from the file
2562         // TODO: honor smoothing groups somehow?
2563         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
2564         Mod_BuildBaseBonePoses();
2565         Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
2566         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2567         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
2568         Mod_Alias_CalculateBoundingBox();
2569
2570         loadmodel->surfmesh.isanimated = loadmodel->numframes > 1 || loadmodel->animscenes[0].framecount > 1;
2571 }
2572