mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-05 20:50:43 +00:00
306 lines
6.6 KiB
C
306 lines
6.6 KiB
C
/*
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model.c
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model loading and caching
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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// Models are the only shared resource between a client and server running
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// on the same machine.
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((unused)) const char rcsid[] =
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"$Id$";
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/cvar.h"
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#include "QF/model.h"
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#include "QF/qendian.h"
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#include "QF/quakefs.h"
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#include "QF/sys.h"
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#include "compat.h"
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model_t *loadmodel;
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char *loadname; // for hunk tags
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#define MAX_MOD_KNOWN 512
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model_t mod_known[MAX_MOD_KNOWN];
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int mod_numknown;
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texture_t *r_notexture_mip;
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cvar_t *gl_mesh_cache;
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cvar_t *gl_subdivide_size;
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cvar_t *gl_alias_render_tri;
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cvar_t *gl_textures_external;
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static void Mod_CallbackLoad (void *object, cache_allocator_t allocator);
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void
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Mod_Init (void)
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{
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byte *dest;
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int m, x, y;
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int mip0size = 16*16, mip1size = 8*8, mip2size = 4*4, mip3size = 2*2;
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memset (mod_novis, 0xff, sizeof (mod_novis));
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r_notexture_mip = Hunk_AllocName (sizeof (texture_t) + mip0size + mip1size
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+ mip2size + mip3size, "notexture");
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r_notexture_mip->width = r_notexture_mip->height = 16;
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r_notexture_mip->offsets[0] = sizeof (texture_t);
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r_notexture_mip->offsets[1] = r_notexture_mip->offsets[0] + mip0size;
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r_notexture_mip->offsets[2] = r_notexture_mip->offsets[1] + mip1size;
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r_notexture_mip->offsets[3] = r_notexture_mip->offsets[2] + mip2size;
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for (m = 0; m < 4; m++) {
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dest = (byte *) r_notexture_mip + r_notexture_mip->offsets[m];
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for (y = 0; y < (16 >> m); y++)
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for (x = 0; x < (16 >> m); x++) {
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if ((y < (8 >> m)) ^ (x < (8 >> m)))
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*dest++ = 0;
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else
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*dest++ = 0xff;
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}
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}
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}
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void
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Mod_Init_Cvars (void)
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{
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gl_subdivide_size =
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Cvar_Get ("gl_subdivide_size", "128", CVAR_ARCHIVE, NULL,
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"Sets the division value for the sky brushes.");
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gl_mesh_cache = Cvar_Get ("gl_mesh_cache", "256", CVAR_ARCHIVE, NULL,
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"minimum triangle count in a model for its mesh"
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" to be cached. 0 to disable caching");
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gl_alias_render_tri =
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Cvar_Get ("gl_alias_render_tri", "0", CVAR_ARCHIVE, NULL, "When "
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"loading alias models mesh for pure triangle rendering");
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gl_textures_external =
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Cvar_Get ("gl_textures_external", "1", CVAR_ARCHIVE, NULL,
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"Use external textures to replace BSP textures");
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}
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void
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Mod_ClearAll (void)
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{
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int i;
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model_t *mod;
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for (i = 0, mod = mod_known; i < mod_numknown; i++, mod++) {
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if (mod->type != mod_alias)
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mod->needload = true;
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if (mod->type == mod_sprite)
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mod->cache.data = 0;
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}
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}
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model_t *
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Mod_FindName (const char *name)
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{
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int i;
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model_t *mod;
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if (!name[0])
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Sys_Error ("Mod_FindName: empty name");
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// search the currently loaded models
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for (i = 0, mod = mod_known; i < mod_numknown; i++, mod++)
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if (!strcmp (mod->name, name))
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break;
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if (i == mod_numknown) {
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if (mod_numknown == MAX_MOD_KNOWN)
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Sys_Error ("mod_numknown == MAX_MOD_KNOWN");
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strcpy (mod->name, name);
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mod->needload = true;
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mod_numknown++;
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Cache_Add (&mod->cache, mod, Mod_CallbackLoad);
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}
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return mod;
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}
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static model_t *
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Mod_RealLoadModel (model_t *mod, qboolean crash, cache_allocator_t allocator)
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{
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unsigned int *buf;
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// load the file
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buf = (unsigned int *) QFS_LoadFile (mod->name, 0);
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if (!buf) {
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if (crash)
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Sys_Error ("Mod_LoadModel: %s not found", mod->name);
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return NULL;
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}
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// allocate a new model
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if (loadname)
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free (loadname);
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loadname = QFS_FileBase (mod->name);
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loadmodel = mod;
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// fill it in
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if (strequal (mod->name, "progs/grenade.mdl")) {
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mod->shadow_alpha = 0;
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} else {
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mod->shadow_alpha = 255;
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}
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if (strnequal (mod->name, "progs/flame", 11)
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|| strnequal (mod->name, "progs/bolt", 10)) {
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mod->fullbright = 1;
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mod->shadow_alpha = 0;
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} else {
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mod->fullbright = 0;
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}
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if (strequal (mod->name, "progs/player.mdl")) {
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mod->min_light = 0.04;
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} else if (strnequal (mod->name, "progs/v_", 8)) {
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mod->min_light = 0.12;
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} else {
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mod->min_light = 0.0;
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}
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// call the apropriate loader
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mod->needload = false;
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mod->hasfullbrights = false;
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switch (LittleLong (*(unsigned int *) buf)) {
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case IDPOLYHEADER:
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case POLYHEADER16:
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Mod_LoadAliasModel (mod, buf, allocator);
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break;
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case IDSPRITEHEADER:
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Mod_LoadSpriteModel (mod, buf);
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break;
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default:
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Mod_LoadBrushModel (mod, buf);
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if (gl_textures_external->int_val)
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Mod_LoadExternalTextures (mod);
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break;
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}
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free (buf);
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return mod;
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}
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/*
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Mod_LoadModel
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Loads a model into the cache
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*/
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static model_t *
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Mod_LoadModel (model_t *mod, qboolean crash)
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{
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if (!mod->needload) {
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if (mod->type == mod_alias) {
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if (Cache_Check (&mod->cache))
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return mod;
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} else
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return mod; // not cached at all
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}
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return Mod_RealLoadModel (mod, crash, Cache_Alloc);
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}
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/*
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Mod_CallbackLoad
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Callback used to load model automatically
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*/
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static void
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Mod_CallbackLoad (void *object, cache_allocator_t allocator)
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{
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if (((model_t *)object)->type != mod_alias)
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Sys_Error ("Mod_CallbackLoad for non-alias model? FIXME!");
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// FIXME: do we want crash set to true?
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Mod_RealLoadModel (object, true, allocator);
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}
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/*
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Mod_ForName
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Loads in a model for the given name
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*/
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model_t *
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Mod_ForName (const char *name, qboolean crash)
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{
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model_t *mod;
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mod = Mod_FindName (name);
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Sys_DPrintf ("Mod_ForName: %s, %p\n", name, mod);
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return Mod_LoadModel (mod, crash);
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}
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void
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Mod_TouchModel (const char *name)
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{
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model_t *mod;
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mod = Mod_FindName (name);
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if (!mod->needload) {
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if (mod->type == mod_alias)
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Cache_Check (&mod->cache);
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}
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}
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void
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Mod_Print (void)
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{
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int i;
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model_t *mod;
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Sys_Printf ("Cached models:\n");
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for (i = 0, mod = mod_known; i < mod_numknown; i++, mod++) {
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Sys_Printf ("%8p : %s\n", mod->cache.data, mod->name);
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}
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}
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float
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RadiusFromBounds (const vec3_t mins, const vec3_t maxs)
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{
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int i;
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vec3_t corner;
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for (i = 0; i < 3; i++)
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corner[i] = max (fabs (mins[i]), fabs (maxs[i]));
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return VectorLength (corner);
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}
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