mirror of
https://git.code.sf.net/p/quake/nuq
synced 2025-02-16 17:11:21 +00:00
c7d8fb3773
type specific code into the appropriate files (which will later be merged as much as possible) and remove all model type specific code from model.c. gl_model.c is no more as it ended up being an exact copy of model.c minus a header include and a prototype, neither of which were needed.
477 lines
11 KiB
C
477 lines
11 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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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "r_local.h"
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#include "sys.h"
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#include "console.h"
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#include "qendian.h"
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#include "checksum.h"
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/*
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==============================================================================
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ALIAS MODELS
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==============================================================================
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*/
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/*
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=================
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Mod_LoadAliasFrame
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=================
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*/
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void * Mod_LoadAliasFrame (void * pin, int *pframeindex, int numv,
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trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name)
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{
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trivertx_t *pframe, *pinframe;
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int i, j;
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daliasframe_t *pdaliasframe;
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pdaliasframe = (daliasframe_t *)pin;
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strcpy (name, pdaliasframe->name);
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for (i=0 ; i<3 ; i++)
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{
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// these are byte values, so we don't have to worry about
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// endianness
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pbboxmin->v[i] = pdaliasframe->bboxmin.v[i];
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pbboxmax->v[i] = pdaliasframe->bboxmax.v[i];
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}
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pinframe = (trivertx_t *)(pdaliasframe + 1);
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pframe = Hunk_AllocName (numv * sizeof(*pframe), loadname);
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*pframeindex = (byte *)pframe - (byte *)pheader;
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for (j=0 ; j<numv ; j++)
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{
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int k;
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// these are all byte values, so no need to deal with endianness
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pframe[j].lightnormalindex = pinframe[j].lightnormalindex;
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for (k=0 ; k<3 ; k++)
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{
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pframe[j].v[k] = pinframe[j].v[k];
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}
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}
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pinframe += numv;
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return (void *)pinframe;
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}
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/*
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=================
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Mod_LoadAliasGroup
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=================
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*/
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void * Mod_LoadAliasGroup (void * pin, int *pframeindex, int numv,
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trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name)
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{
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daliasgroup_t *pingroup;
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maliasgroup_t *paliasgroup;
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int i, numframes;
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daliasinterval_t *pin_intervals;
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float *poutintervals;
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void *ptemp;
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pingroup = (daliasgroup_t *)pin;
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numframes = LittleLong (pingroup->numframes);
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paliasgroup = Hunk_AllocName (sizeof (maliasgroup_t) +
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(numframes - 1) * sizeof (paliasgroup->frames[0]), loadname);
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paliasgroup->numframes = numframes;
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for (i=0 ; i<3 ; i++)
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{
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// these are byte values, so we don't have to worry about endianness
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pbboxmin->v[i] = pingroup->bboxmin.v[i];
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pbboxmax->v[i] = pingroup->bboxmax.v[i];
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}
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*pframeindex = (byte *)paliasgroup - (byte *)pheader;
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pin_intervals = (daliasinterval_t *)(pingroup + 1);
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poutintervals = Hunk_AllocName (numframes * sizeof (float), loadname);
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paliasgroup->intervals = (byte *)poutintervals - (byte *)pheader;
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for (i=0 ; i<numframes ; i++)
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{
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*poutintervals = LittleFloat (pin_intervals->interval);
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if (*poutintervals <= 0.0)
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Sys_Error ("Mod_LoadAliasGroup: interval<=0");
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poutintervals++;
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pin_intervals++;
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}
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ptemp = (void *)pin_intervals;
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for (i=0 ; i<numframes ; i++)
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{
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ptemp = Mod_LoadAliasFrame (ptemp,
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&paliasgroup->frames[i].frame,
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numv,
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&paliasgroup->frames[i].bboxmin,
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&paliasgroup->frames[i].bboxmax,
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pheader, name);
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}
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return ptemp;
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}
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/*
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=================
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Mod_LoadAliasSkin
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=================
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*/
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void * Mod_LoadAliasSkin (void * pin, int *pskinindex, int skinsize,
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aliashdr_t *pheader)
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{
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int i;
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byte *pskin, *pinskin;
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unsigned short *pusskin;
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pskin = Hunk_AllocName (skinsize * r_pixbytes, loadname);
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pinskin = (byte *)pin;
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*pskinindex = (byte *)pskin - (byte *)pheader;
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if (r_pixbytes == 1)
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{
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memcpy (pskin, pinskin, skinsize);
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}
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else if (r_pixbytes == 2)
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{
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pusskin = (unsigned short *)pskin;
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for (i=0 ; i<skinsize ; i++)
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pusskin[i] = d_8to16table[pinskin[i]];
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}
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else
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{
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Sys_Error ("Mod_LoadAliasSkin: driver set invalid r_pixbytes: %d\n",
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r_pixbytes);
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}
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pinskin += skinsize;
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return ((void *)pinskin);
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}
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/*
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=================
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Mod_LoadAliasSkinGroup
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=================
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*/
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void * Mod_LoadAliasSkinGroup (void * pin, int *pskinindex, int skinsize,
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aliashdr_t *pheader)
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{
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daliasskingroup_t *pinskingroup;
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maliasskingroup_t *paliasskingroup;
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int i, numskins;
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daliasskininterval_t *pinskinintervals;
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float *poutskinintervals;
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void *ptemp;
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pinskingroup = (daliasskingroup_t *)pin;
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numskins = LittleLong (pinskingroup->numskins);
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paliasskingroup = Hunk_AllocName (sizeof (maliasskingroup_t) +
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(numskins - 1) * sizeof (paliasskingroup->skindescs[0]),
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loadname);
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paliasskingroup->numskins = numskins;
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*pskinindex = (byte *)paliasskingroup - (byte *)pheader;
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pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1);
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poutskinintervals = Hunk_AllocName (numskins * sizeof (float),loadname);
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paliasskingroup->intervals = (byte *)poutskinintervals - (byte *)pheader;
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for (i=0 ; i<numskins ; i++)
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{
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*poutskinintervals = LittleFloat (pinskinintervals->interval);
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if (*poutskinintervals <= 0)
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Sys_Error ("Mod_LoadAliasSkinGroup: interval<=0");
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poutskinintervals++;
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pinskinintervals++;
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}
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ptemp = (void *)pinskinintervals;
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for (i=0 ; i<numskins ; i++)
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{
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ptemp = Mod_LoadAliasSkin (ptemp,
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&paliasskingroup->skindescs[i].skin, skinsize, pheader);
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}
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return ptemp;
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}
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/*
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=================
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Mod_LoadAliasModel
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=================
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*/
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void Mod_LoadAliasModel (model_t *mod, void *buffer)
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{
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int i;
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mdl_t *pmodel, *pinmodel;
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stvert_t *pstverts, *pinstverts;
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aliashdr_t *pheader;
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mtriangle_t *ptri;
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dtriangle_t *pintriangles;
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int version, numframes, numskins;
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int size;
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daliasframetype_t *pframetype;
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daliasskintype_t *pskintype;
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maliasskindesc_t *pskindesc;
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int skinsize;
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int start, end, total;
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start = Hunk_LowMark ();
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pinmodel = (mdl_t *)buffer;
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version = LittleLong (pinmodel->version);
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if (version != ALIAS_VERSION)
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Sys_Error ("%s has wrong version number (%i should be %i)",
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mod->name, version, ALIAS_VERSION);
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//
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// allocate space for a working header, plus all the data except the frames,
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// skin and group info
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//
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size = sizeof (aliashdr_t) + (LittleLong (pinmodel->numframes) - 1) *
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sizeof (pheader->frames[0]) +
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sizeof (mdl_t) +
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LittleLong (pinmodel->numverts) * sizeof (stvert_t) +
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LittleLong (pinmodel->numtris) * sizeof (mtriangle_t);
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pheader = Hunk_AllocName (size, loadname);
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pmodel = (mdl_t *) ((byte *)&pheader[1] +
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(LittleLong (pinmodel->numframes) - 1) *
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sizeof (pheader->frames[0]));
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// mod->cache.data = pheader;
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mod->flags = LittleLong (pinmodel->flags);
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//
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// endian-adjust and copy the data, starting with the alias model header
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//
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pmodel->boundingradius = LittleFloat (pinmodel->boundingradius);
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pmodel->numskins = LittleLong (pinmodel->numskins);
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pmodel->skinwidth = LittleLong (pinmodel->skinwidth);
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pmodel->skinheight = LittleLong (pinmodel->skinheight);
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if (pmodel->skinheight > MAX_LBM_HEIGHT)
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Sys_Error ("model %s has a skin taller than %d", mod->name,
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MAX_LBM_HEIGHT);
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pmodel->numverts = LittleLong (pinmodel->numverts);
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if (pmodel->numverts <= 0)
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Sys_Error ("model %s has no vertices", mod->name);
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if (pmodel->numverts > MAXALIASVERTS)
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Sys_Error ("model %s has too many vertices", mod->name);
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pmodel->numtris = LittleLong (pinmodel->numtris);
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if (pmodel->numtris <= 0)
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Sys_Error ("model %s has no triangles", mod->name);
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pmodel->numframes = LittleLong (pinmodel->numframes);
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pmodel->size = LittleFloat (pinmodel->size) * ALIAS_BASE_SIZE_RATIO;
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mod->synctype = LittleLong (pinmodel->synctype);
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mod->numframes = pmodel->numframes;
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for (i=0 ; i<3 ; i++)
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{
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pmodel->scale[i] = LittleFloat (pinmodel->scale[i]);
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pmodel->scale_origin[i] = LittleFloat (pinmodel->scale_origin[i]);
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pmodel->eyeposition[i] = LittleFloat (pinmodel->eyeposition[i]);
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}
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numskins = pmodel->numskins;
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numframes = pmodel->numframes;
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if (pmodel->skinwidth & 0x03)
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Sys_Error ("Mod_LoadAliasModel: skinwidth not multiple of 4");
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pheader->model = (byte *)pmodel - (byte *)pheader;
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//
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// load the skins
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//
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skinsize = pmodel->skinheight * pmodel->skinwidth;
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if (numskins < 1)
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Sys_Error ("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
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pskintype = (daliasskintype_t *)&pinmodel[1];
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pskindesc = Hunk_AllocName (numskins * sizeof (maliasskindesc_t),
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loadname);
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pheader->skindesc = (byte *)pskindesc - (byte *)pheader;
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for (i=0 ; i<numskins ; i++)
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{
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aliasskintype_t skintype;
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skintype = LittleLong (pskintype->type);
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pskindesc[i].type = skintype;
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if (skintype == ALIAS_SKIN_SINGLE)
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{
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pskintype = (daliasskintype_t *)
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Mod_LoadAliasSkin (pskintype + 1,
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&pskindesc[i].skin,
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skinsize, pheader);
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}
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else
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{
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pskintype = (daliasskintype_t *)
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Mod_LoadAliasSkinGroup (pskintype + 1,
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&pskindesc[i].skin,
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skinsize, pheader);
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}
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}
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//
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// set base s and t vertices
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//
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pstverts = (stvert_t *)&pmodel[1];
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pinstverts = (stvert_t *)pskintype;
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pheader->stverts = (byte *)pstverts - (byte *)pheader;
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for (i=0 ; i<pmodel->numverts ; i++)
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{
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pstverts[i].onseam = LittleLong (pinstverts[i].onseam);
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// put s and t in 16.16 format
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pstverts[i].s = LittleLong (pinstverts[i].s) << 16;
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pstverts[i].t = LittleLong (pinstverts[i].t) << 16;
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}
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//
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// set up the triangles
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//
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ptri = (mtriangle_t *)&pstverts[pmodel->numverts];
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pintriangles = (dtriangle_t *)&pinstverts[pmodel->numverts];
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pheader->triangles = (byte *)ptri - (byte *)pheader;
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for (i=0 ; i<pmodel->numtris ; i++)
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{
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int j;
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ptri[i].facesfront = LittleLong (pintriangles[i].facesfront);
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for (j=0 ; j<3 ; j++)
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{
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ptri[i].vertindex[j] =
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LittleLong (pintriangles[i].vertindex[j]);
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}
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}
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//
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// load the frames
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//
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if (numframes < 1)
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Sys_Error ("Mod_LoadAliasModel: Invalid # of frames: %d\n", numframes);
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pframetype = (daliasframetype_t *)&pintriangles[pmodel->numtris];
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for (i=0 ; i<numframes ; i++)
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{
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aliasframetype_t frametype;
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frametype = LittleLong (pframetype->type);
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pheader->frames[i].type = frametype;
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if (frametype == ALIAS_SINGLE)
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{
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pframetype = (daliasframetype_t *)
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Mod_LoadAliasFrame (pframetype + 1,
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&pheader->frames[i].frame,
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pmodel->numverts,
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&pheader->frames[i].bboxmin,
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&pheader->frames[i].bboxmax,
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pheader, pheader->frames[i].name);
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}
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else
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{
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pframetype = (daliasframetype_t *)
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Mod_LoadAliasGroup (pframetype + 1,
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&pheader->frames[i].frame,
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pmodel->numverts,
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&pheader->frames[i].bboxmin,
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&pheader->frames[i].bboxmax,
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pheader, pheader->frames[i].name);
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}
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}
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mod->type = mod_alias;
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// FIXME: do this right
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mod->mins[0] = mod->mins[1] = mod->mins[2] = -16;
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mod->maxs[0] = mod->maxs[1] = mod->maxs[2] = 16;
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//
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// move the complete, relocatable alias model to the cache
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//
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end = Hunk_LowMark ();
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total = end - start;
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Cache_Alloc (&mod->cache, total, loadname);
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if (!mod->cache.data)
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return;
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memcpy (mod->cache.data, pheader, total);
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Hunk_FreeToLowMark (start);
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}
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