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gl_model.c
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gl_model.c
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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// gl_model.c -- model loading and caching
// models are the only shared resource between a client and server running
// on the same machine.
/*
* $Header: /H2 Mission Pack/gl_model.c 11 3/16/98 4:38p Jmonroe $
*/
#include "quakedef.h"
model_t *loadmodel;
char loadname[32]; // for hunk tags
model_t *player_models[MAX_PLAYER_CLASS];
void Mod_LoadSpriteModel (model_t *mod, void *buffer);
void Mod_LoadBrushModel (model_t *mod, void *buffer);
void Mod_LoadAliasModel (model_t *mod, void *buffer);
void Mod_LoadAliasModelNew (model_t *mod, void *buffer);
model_t *Mod_LoadModel (model_t *mod, qboolean crash);
byte mod_novis[MAX_MAP_LEAFS/8];
#define MAX_MOD_KNOWN 2048 // was 1500
model_t mod_known[MAX_MOD_KNOWN];
int mod_numknown;
int entity_file_size;
cvar_t external_lit = {"external_lit","0"};
cvar_t external_vis = {"external_vis","0"};
cvar_t external_ent = {"external_ent","0"};
/*
===============
Mod_Init
===============
*/
void Mod_Init (void)
{
Cvar_RegisterVariable (&external_lit, NULL);
Cvar_RegisterVariable (&external_vis, NULL);
Cvar_RegisterVariable (&external_ent, NULL);
memset (mod_novis, 0xff, sizeof(mod_novis));
}
/*
===============
Mod_Extradata
Caches the data if needed
===============
*/
void *Mod_Extradata (model_t *mod)
{
void *r;
r = Cache_Check (&mod->cache);
if (r)
return r;
Mod_LoadModel (mod, true);
if (!mod->cache.data)
Sys_Error ("Mod_Extradata: caching failed");
return mod->cache.data;
}
/*
===============
Mod_PointInLeaf
===============
*/
mleaf_t *Mod_PointInLeaf (vec3_t p, model_t *model)
{
mnode_t *node;
float d;
mplane_t *plane;
if (!model || !model->nodes)
Sys_Error ("Mod_PointInLeaf: bad model");
node = model->nodes;
while (1)
{
if (node->contents < 0)
return (mleaf_t *)node;
plane = node->plane;
d = DotProduct (p,plane->normal) - plane->dist;
if (d > 0)
node = node->children[0];
else
node = node->children[1];
}
return NULL; // never reached
}
/*
===================
Mod_DecompressVis
===================
*/
byte *Mod_DecompressVis (byte *in, model_t *model)
{
static byte decompressed[MAX_MAP_LEAFS/8];
int c;
byte *out;
int row;
row = (model->numleafs+7)>>3;
out = decompressed;
if (!in)
{ // no vis info, so make all visible
while (row)
{
*out++ = 0xff;
row--;
}
return decompressed;
}
do
{
if (*in)
{
*out++ = *in++;
continue;
}
c = in[1];
in += 2;
while (c)
{
*out++ = 0;
c--;
}
} while (out - decompressed < row);
return decompressed;
}
/*
=================
Mod_LeafPVS
=================
*/
byte *Mod_LeafPVS (mleaf_t *leaf, model_t *model)
{
if (leaf == model->leafs)
return mod_novis;
return Mod_DecompressVis (leaf->compressed_vis, model);
}
/*
===================
Mod_ClearAll
===================
*/
void Mod_ClearAll (void)
{
int i;
model_t *mod;
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
if (mod->type != mod_alias)
mod->needload = true;
}
/*
==================
Mod_FindName
==================
*/
model_t *Mod_FindName (char *name)
{
int i;
model_t *mod;
if (!name[0])
Sys_Error ("Mod_ForName: NULL name");
//
// search the currently loaded models
//
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
if (!strcmp (mod->name, name) )
break;
if (i == mod_numknown)
{
if (mod_numknown == MAX_MOD_KNOWN)
Sys_Error ("mod_numknown == MAX_MOD_KNOWN");
strcpy (mod->name, name);
mod->needload = true;
mod_numknown++;
}
return mod;
}
/*
==================
Mod_TouchModel
==================
*/
void Mod_TouchModel (char *name)
{
model_t *mod;
mod = Mod_FindName (name);
if (!mod->needload)
{
if (mod->type == mod_alias)
Cache_Check (&mod->cache);
}
}
/*
==================
Mod_LoadModel
Loads a model into the cache
==================
*/
model_t *Mod_LoadModel (model_t *mod, qboolean crash)
{
void *d;
unsigned *buf;
byte stackbuf[1024]; // avoid dirtying the cache heap
if (!mod->needload)
{
if (mod->type == mod_alias)
{
d = Cache_Check (&mod->cache);
if (d)
return mod;
}
else
return mod; // not cached at all
}
//
// because the world is so huge, load it one piece at a time
//
if (!crash)
{
}
//
// load the file
//
buf = (unsigned *)COM_LoadStackFile (mod->name, stackbuf, sizeof(stackbuf), NULL);
if (!buf)
{
if (crash)
Sys_Error ("Mod_NumForName: %s not found", mod->name);
return NULL;
}
//
// allocate a new model
//
COM_FileBase (mod->name, loadname);
loadmodel = mod;
//
// fill it in
//
// call the apropriate loader
mod->needload = false;
switch (LittleLong(*(unsigned *)buf))
{
case RAPOLYHEADER:
Mod_LoadAliasModelNew (mod, buf);
break;
case IDPOLYHEADER:
Mod_LoadAliasModel (mod, buf);
break;
case IDSPRITEHEADER:
Mod_LoadSpriteModel (mod, buf);
break;
default:
Mod_LoadBrushModel (mod, buf);
break;
}
return mod;
}
/*
==================
Mod_ForName
Loads in a model for the given name
==================
*/
model_t *Mod_ForName (char *name, qboolean crash)
{
model_t *mod;
mod = Mod_FindName (name);
return Mod_LoadModel (mod, crash);
}
/*
===============================================================================
BRUSHMODEL LOADING
===============================================================================
*/
static int missingtex;
byte *mod_base;
/*
==================
IsFullbright
==================
*/
qboolean IsFullbright (byte *pixels, int size)
{
int i;
for (i=0 ; i<size ; i++)
if (pixels[i] > 237) //hexen2 palette specific
return true;
return false;
}
/*
=================
Mod_LoadTextures
=================
*/
void Mod_LoadTextures (lump_t *l)
{
int i, j, pixels, num, max, altmax;
miptex_t *mt;
texture_t *tx, *tx2;
texture_t *anims[10];
texture_t *altanims[10];
dmiptexlump_t *m;
char texturename[64];
int nummiptex;
unsigned offset;
int mark;
char texname[16 + 1];
// don't return early if no textures; still need to create dummy texture
if (!l->filelen)
{
loadmodel->textures = NULL;
return;
}
m = (dmiptexlump_t *)(mod_base + l->fileofs);
m->nummiptex = LittleLong (m->nummiptex);
loadmodel->numtextures = m->nummiptex;
loadmodel->textures = Hunk_AllocName (m->nummiptex * sizeof(*loadmodel->textures) , loadname);
for (i=0 ; i<m->nummiptex ; i++)
{
m->dataofs[i] = LittleLong(m->dataofs[i]);
if (m->dataofs[i] == -1)
continue;
mt = (miptex_t *)((byte *)m + m->dataofs[i]);
mt->width = LittleLong (mt->width);
mt->height = LittleLong (mt->height);
for (j=0 ; j<MIPLEVELS ; j++)
mt->offsets[j] = LittleLong (mt->offsets[j]);
if ( (mt->width & 15) || (mt->height & 15) )
Sys_Error ("Texture %s is not 16 aligned", mt->name);
pixels = mt->width*mt->height/64*85;
tx = Hunk_AllocName (sizeof(texture_t) +pixels, loadname );
loadmodel->textures[i] = tx;
memcpy (tx->name, mt->name, sizeof(tx->name));
tx->width = mt->width;
tx->height = mt->height;
for (j=0 ; j<MIPLEVELS ; j++)
tx->offsets[j] = mt->offsets[j] + sizeof(texture_t) - sizeof(miptex_t);
// the pixels immediately follow the structures
memcpy ( tx+1, mt+1, pixels);
tx->update_warp = false;
tx->warpimage = NULL;
tx->fullbright = NULL;
if (cls.state != ca_dedicated) // no texture uploading for dedicated server
{
if (!strncasecmp(tx->name,"sky",3)) // sky texture (also note: was strncmp, changed to match qbsp)
{
R_InitSky (tx);
}
else if (tx->name[0] == '*') // warping texture
{
// byte *dummy;
mark = Hunk_LowMark();
sprintf (texturename, "%s:%s", loadmodel->name, tx->name);
offset = (unsigned)(mt+1) - (unsigned)mod_base;
tx->gltexture = GL_LoadTexture (loadmodel, texturename, tx->width, tx->height, SRC_INDEXED, (byte *)(tx+1), loadmodel->name, offset, TEXPREF_NONE);
// now create the warpimage, using dummy data to create the initial image
// dummy = malloc (gl_warpimage_size*gl_warpimage_size*4);
//now create the warpimage, using dummy data from the hunk to create the initial image
Hunk_Alloc (gl_warpimage_size*gl_warpimage_size*4); //make sure hunk is big enough so we don't reach an illegal address
Hunk_FreeToLowMark (mark);
sprintf (texturename, "%s_warp", texturename);
// tx->warpimage = GL_LoadTexture (loadmodel, texturename, gl_warpimage_size, gl_warpimage_size, SRC_RGBA /* SRC_INDEXED */, dummy, "", (unsigned)dummy, TEXPREF_NOPICMIP | TEXPREF_WARPIMAGE);
tx->warpimage = GL_LoadTexture (loadmodel, texturename, gl_warpimage_size, gl_warpimage_size, SRC_RGBA /* SRC_INDEXED */, hunk_base, "", (unsigned)hunk_base, TEXPREF_NOPICMIP | TEXPREF_WARPIMAGE);
tx->update_warp = true;
// free (dummy);
}
else // regular texture
{
offset = (unsigned)(mt+1) - (unsigned)mod_base;
if (IsFullbright ((byte *)(tx+1), pixels))
{
sprintf (texturename, "%s:%s", loadmodel->name, tx->name);
tx->gltexture = GL_LoadTexture (loadmodel, texturename, tx->width, tx->height, SRC_INDEXED, (byte *)(tx+1), loadmodel->name, offset, TEXPREF_MIPMAP | TEXPREF_NOBRIGHT);
sprintf (texturename, "%s:%s_glow", loadmodel->name, tx->name);
tx->fullbright = GL_LoadTexture (loadmodel, texturename, tx->width, tx->height, SRC_INDEXED, (byte *)(tx+1), loadmodel->name, offset, TEXPREF_MIPMAP | TEXPREF_FULLBRIGHT);
}
else
{
sprintf (texturename, "%s:%s", loadmodel->name, tx->name);
tx->gltexture = GL_LoadTexture (loadmodel, texturename, tx->width, tx->height, SRC_INDEXED, (byte *)(tx+1), loadmodel->name, offset, TEXPREF_MIPMAP);
}
}
}
}
// last 2 slots in array should be filled with dummy textures
loadmodel->textures[loadmodel->numtextures-2] = notexture_mip; // for lightmapped surfs
loadmodel->textures[loadmodel->numtextures-1] = notexture_mip2; // for SURF_DRAWTILED surfs
//
// sequence the animations
//
for (i=0 ; i<m->nummiptex ; i++)
{
tx = loadmodel->textures[i];
if (!tx || tx->name[0] != '+')
continue;
if (tx->anim_next)
continue; // already sequenced
// find the number of frames in the animation
memset (anims, 0, sizeof(anims));
memset (altanims, 0, sizeof(altanims));
max = tx->name[1];
altmax = 0;
if (max >= 'a' && max <= 'z')
max -= 'a' - 'A';
if (max >= '0' && max <= '9')
{
max -= '0';
altmax = 0;
anims[max] = tx;
max++;
}
else if (max >= 'A' && max <= 'J')
{
altmax = max - 'A';
max = 0;
altanims[altmax] = tx;
altmax++;
}
else
Sys_Error ("Bad animating texture %s", tx->name);
for (j=i+1 ; j<m->nummiptex ; j++)
{
tx2 = loadmodel->textures[j];
if (!tx2 || tx2->name[0] != '+')
continue;
if (strcmp (tx2->name+2, tx->name+2))
continue;
num = tx2->name[1];
if (num >= 'a' && num <= 'z')
num -= 'a' - 'A';
if (num >= '0' && num <= '9')
{
num -= '0';
anims[num] = tx2;
if (num+1 > max)
max = num + 1;
}
else if (num >= 'A' && num <= 'J')
{
num = num - 'A';
altanims[num] = tx2;
if (num+1 > altmax)
altmax = num+1;
}
else
Sys_Error ("Bad animating texture %s", tx->name);
}
#define ANIM_CYCLE 2
// link them all together
for (j=0 ; j<max ; j++)
{
tx2 = anims[j];
if (!tx2)
Sys_Error ("Missing frame %i of %s",j, tx->name);
tx2->anim_total = max * ANIM_CYCLE;
tx2->anim_min = j * ANIM_CYCLE;
tx2->anim_max = (j+1) * ANIM_CYCLE;
tx2->anim_next = anims[ (j+1)%max ];
if (altmax)
tx2->alternate_anims = altanims[0];
}
for (j=0 ; j<altmax ; j++)
{
tx2 = altanims[j];
if (!tx2)
Sys_Error ("Missing frame %i of %s",j, tx->name);
tx2->anim_total = altmax * ANIM_CYCLE;
tx2->anim_min = j * ANIM_CYCLE;
tx2->anim_max = (j+1) * ANIM_CYCLE;
tx2->anim_next = altanims[ (j+1)%altmax ];
if (max)
tx2->alternate_anims = anims[0];
}
}
}
/*
=================
Mod_LoadLighting
replaced with lit support code via lordhavoc
=================
*/
void Mod_LoadLighting (lump_t *l)
{
// LordHavoc: .lit support
int i;
byte *in, *out, *data;
byte d;
char litfilename[MAX_QPATH];
unsigned int path_id;
loadmodel->lightdata = NULL;
if (loadmodel->isworldmodel && external_lit.value)
{
// LordHavoc: check for a .lit file
strcpy(litfilename, loadmodel->name);
COM_StripExtension(litfilename, litfilename);
strcat(litfilename, ".lit");
Con_DPrintf("trying to load %s\n", litfilename);
data = (byte *) COM_LoadHunkFile (litfilename, &path_id);
if (data)
{
// use .lit file only from the same gamedir as the map
// itself or from a searchpath with higher priority.
if (path_id < loadmodel->path_id)
{
Con_DPrintf("Ignored %s from a gamedir with lower priority\n", litfilename);
}
else if (data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
{
i = LittleLong(((int *)data)[1]);
if (i == 1)
{
Con_DPrintf("%s loaded\n", litfilename);
loadmodel->lightdata = data + 8;
return;
}
else
Con_Printf("Unknown .lit file version (%d)\n", i);
}
else
Con_Printf("Corrupt .lit file (old version?), ignoring\n");
}
}
// LordHavoc: no .lit found, expand the white lighting data to color
if (!l->filelen)
{
return;
}
loadmodel->lightdata = Hunk_AllocName ( l->filelen*3, litfilename);
in = loadmodel->lightdata + l->filelen*2; // place the file at the end, so it will not be overwritten until the very last write
out = loadmodel->lightdata;
memcpy (in, mod_base + l->fileofs, l->filelen);
for (i = 0;i < l->filelen;i++)
{
d = *in++;
*out++ = d;
*out++ = d;
*out++ = d;
}
}
/*
=================
Mod_LoadVisibility
=================
*/
void Mod_LoadVisibility (lump_t *l)
{
if (!l->filelen)
{
loadmodel->visdata = NULL;
return;
}
loadmodel->visdata = Hunk_AllocName ( l->filelen, loadname);
memcpy (loadmodel->visdata, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadEntities
=================
*/
void Mod_LoadEntities (lump_t *l)
{
if (!l->filelen)
{
loadmodel->entities = NULL;
return;
}
loadmodel->entities = Hunk_AllocName ( l->filelen, loadname);
memcpy (loadmodel->entities, mod_base + l->fileofs, l->filelen);
entity_file_size = l->filelen;
}
/*
=================
Mod_LoadVertexes
=================
*/
void Mod_LoadVertexes (lump_t *l)
{
dvertex_t *in;
mvertex_t *out;
int i, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->vertexes = out;
loadmodel->numvertexes = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
out->position[0] = LittleFloat (in->point[0]);
out->position[1] = LittleFloat (in->point[1]);
out->position[2] = LittleFloat (in->point[2]);
}
}
/*
=================
Mod_LoadSubmodels
=================
*/
void Mod_LoadSubmodels (lump_t *l)
{
dmodel_t *in;
dmodel_t *out;
int i, j, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->submodels = out;
loadmodel->numsubmodels = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<3 ; j++)
{ // spread the mins / maxs by a pixel
out->mins[j] = LittleFloat (in->mins[j]) - 1;
out->maxs[j] = LittleFloat (in->maxs[j]) + 1;
out->origin[j] = LittleFloat (in->origin[j]);
}
for (j=0 ; j<MAX_MAP_HULLS ; j++)
out->headnode[j] = LittleLong (in->headnode[j]);
out->visleafs = LittleLong (in->visleafs);
out->firstface = LittleLong (in->firstface);
out->numfaces = LittleLong (in->numfaces);
}
// check world visleafs
out = loadmodel->submodels;
if (out->visleafs > MAX_MAP_LEAFS)
Sys_Error ("Mod_LoadSubmodels: too many visleafs (%d, max = %d) in %s", out->visleafs, MAX_MAP_LEAFS, loadmodel->name);
if (out->visleafs > 8192) // old limit warning
Con_Warning ("Mod_LoadSubmodels: visleafs exceeds standard limit (%d, normal max = %d) in %s\n", out->visleafs, 8192, loadmodel->name);
}
/*
=================
Mod_LoadEdges
=================
*/
void Mod_LoadEdges (lump_t *l)
{
dedge_t *in;
medge_t *out;
int i, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( (count + 1) * sizeof(*out), loadname);
loadmodel->edges = out;
loadmodel->numedges = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
out->v[0] = (unsigned short)LittleShort(in->v[0]);
out->v[1] = (unsigned short)LittleShort(in->v[1]);
}
}
/*
=================
Mod_LoadTexinfo
=================
*/
void Mod_LoadTexinfo (lump_t *l)
{
texinfo_t *in;
mtexinfo_t *out;
int i, j, count;
int miptex;
float len1, len2;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->texinfo = out;
loadmodel->numtexinfo = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<8 ; j++)
out->vecs[0][j] = LittleFloat (in->vecs[0][j]);
len1 = VectorLength (out->vecs[0]);
len2 = VectorLength (out->vecs[1]);
len1 = (len1 + len2)/2;
if (len1 < 0.32)
out->mipadjust = 4;
else if (len1 < 0.49)
out->mipadjust = 3;
else if (len1 < 0.99)
out->mipadjust = 2;
else
out->mipadjust = 1;
miptex = LittleLong (in->miptex);
out->flags = LittleLong (in->flags);
if (miptex >= loadmodel->numtextures-1 || !loadmodel->textures[miptex])
{
if (out->flags & TEX_SPECIAL)
out->texture = loadmodel->textures[loadmodel->numtextures-1]; // checkerboard texture (texture not found)
else
out->texture = loadmodel->textures[loadmodel->numtextures-2]; // checkerboard texture (texture not found)
out->flags |= TEX_MISSING;
}
else
{
out->texture = loadmodel->textures[miptex];
}
}
if (missingtex > 0)
Con_Warning ("Mod_LoadTexinfo: %d texture%s missing in %s\n", missingtex, missingtex == 1 ? " is" : "s are", loadmodel->name);
}
/*
================
CalcSurfaceExtents
Fills in s->texturemins[] and s->extents[]
================
*/
#define MAX_SURF_EXTENTS 2048 // was 512 in glquake, 256 in winquake, fitzquake has 2000
void CalcSurfaceExtents (msurface_t *s)
{
float mins[2], maxs[2], val;
int i,j, e;
mvertex_t *v;
mtexinfo_t *tex;
int bmins[2], bmaxs[2];
mins[0] = mins[1] = 999999;
maxs[0] = maxs[1] = -999999;
tex = s->texinfo;
for (i=0 ; i<s->numedges ; i++)
{
e = loadmodel->surfedges[s->firstedge+i];
if (e >= 0)
v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
else
v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
for (j=0 ; j<2 ; j++)
{
val = v->position[0] * tex->vecs[j][0] +
v->position[1] * tex->vecs[j][1] +
v->position[2] * tex->vecs[j][2] +
tex->vecs[j][3];
if (val < mins[j])
mins[j] = val;
if (val > maxs[j])
maxs[j] = val;
}
}
for (i=0 ; i<2 ; i++)
{
bmins[i] = floor(mins[i]/16);
bmaxs[i] = ceil(maxs[i]/16);
s->texturemins[i] = bmins[i] * 16;
s->extents[i] = (bmaxs[i] - bmins[i]) * 16;
if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 512 /* 256 */ )
Sys_Error ("Bad surface extents");
}
}
/*
================
Mod_PolyForUnlitSurface
creates polys for unlightmapped surfaces (sky and water)
TODO: merge this into R_BuildSurfaceDisplayList?
================
*/
void Mod_PolyForUnlitSurface (msurface_t *fa)
{
vec3_t verts[64];
int numverts, i, lindex;
float *vec;
glpoly_t *poly;
float texscale;
if (fa->flags & (SURF_DRAWTURB | SURF_DRAWSKY))
texscale = (1.0/128.0); // warp animation repeats every 128
else
texscale = (1.0/16.0); // to match notexture_mip
//
// convert edges back to a normal polygon
//
numverts = 0;
for (i=0 ; i<fa->numedges ; i++)
{
lindex = loadmodel->surfedges[fa->firstedge + i];
if (lindex > 0)
vec = loadmodel->vertexes[loadmodel->edges[lindex].v[0]].position;
else
vec = loadmodel->vertexes[loadmodel->edges[-lindex].v[1]].position;
if (numverts >= 64)
Host_Error ("Mod_PolyForUnlitSurface: excessive numverts %i", numverts);
VectorCopy (vec, verts[numverts]);
numverts++;
}
//create the poly
poly = Hunk_AllocName (sizeof(glpoly_t) + (numverts-4) * VERTEXSIZE * sizeof(float), "unlitpoly");
poly->next = NULL;
fa->polys = poly;
poly->numverts = numverts;
for (i=0, vec=(float *)verts; i<numverts; i++, vec+= 3)
{
VectorCopy (vec, poly->verts[i]);
poly->verts[i][3] = DotProduct(vec, fa->texinfo->vecs[0]) * texscale;
poly->verts[i][4] = DotProduct(vec, fa->texinfo->vecs[1]) * texscale;
}
}
/*
=================
Mod_CalcSurfaceBounds
calculate bounding box for per-surface frustum culling
=================
*/
void Mod_CalcSurfaceBounds (msurface_t *s)
{
int i, e;
mvertex_t *v;
s->mins[0] = s->mins[1] = s->mins[2] = 9999;
s->maxs[0] = s->maxs[1] = s->maxs[2] = -9999;
for (i=0 ; i<s->numedges ; i++)
{
e = loadmodel->surfedges[s->firstedge+i];
if (e >= 0)
v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
else
v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
if (s->mins[0] > v->position[0])
s->mins[0] = v->position[0];
if (s->mins[1] > v->position[1])
s->mins[1] = v->position[1];
if (s->mins[2] > v->position[2])
s->mins[2] = v->position[2];
if (s->maxs[0] < v->position[0])
s->maxs[0] = v->position[0];
if (s->maxs[1] < v->position[1])
s->maxs[1] = v->position[1];
if (s->maxs[2] < v->position[2])
s->maxs[2] = v->position[2];
}
}
/*
=================
Mod_LoadFaces
=================
*/
void Mod_LoadFaces (lump_t *l)
{
dface_t *in;
msurface_t *out;
int i, count, surfnum;
int planenum, side;