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quakeforge/libs/models/alias/gl_model_alias.c

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/*
gl_model.c
model loading and caching
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
static const char rcsid[] =
"$Id$";
// models are the only shared resource between a client and server running
// on the same machine.
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "compat.h"
#include "QF/model.h"
#include "QF/qendian.h"
#include "QF/skin.h"
#include "QF/sys.h"
#include "QF/texture.h"
#include "QF/tga.h"
#include "QF/vfs.h"
#include "QF/vid.h"
#include "QF/GL/qf_textures.h"
byte player_8bit_texels[320 * 200];
/*
ALIAS MODELS
*/
// a pose is a single set of vertexes. a frame may be
// an animating sequence of poses
//=========================================================
/*
Mod_FloodFillSkin
Fill background pixels so mipmapping doesn't have haloes - Ed
*/
typedef struct {
short x, y;
} floodfill_t;
// must be a power of 2
#define FLOODFILL_FIFO_SIZE 0x1000
#define FLOODFILL_FIFO_MASK (FLOODFILL_FIFO_SIZE - 1)
#define FLOODFILL_STEP( off, dx, dy ) \
{ \
if (pos[off] == fillcolor) \
{ \
pos[off] = 255; \
fifo[inpt].x = x + (dx), fifo[inpt].y = y + (dy); \
inpt = (inpt + 1) & FLOODFILL_FIFO_MASK; \
} \
else if (pos[off] != 255) fdc = pos[off]; \
}
void
Mod_FloodFillSkin (byte * skin, int skinwidth, int skinheight)
{
byte fillcolor = *skin; // assume this is the pixel to fill
floodfill_t fifo[FLOODFILL_FIFO_SIZE];
int inpt = 0, outpt = 0;
int filledcolor = -1;
int i;
if (filledcolor == -1) {
filledcolor = 0;
// attempt to find opaque black
for (i = 0; i < 256; ++i)
if (d_8to24table[i] == (255 << 0)) // alpha 1.0
{
filledcolor = i;
break;
}
}
// can't fill to filled color or transparent color (used as visited marker)
if ((fillcolor == filledcolor) || (fillcolor == 255)) {
//Sys_Printf ("not filling skin from %d to %d\n", fillcolor, filledcolor);
return;
}
fifo[inpt].x = 0, fifo[inpt].y = 0;
inpt = (inpt + 1) & FLOODFILL_FIFO_MASK;
while (outpt != inpt) {
int x = fifo[outpt].x, y = fifo[outpt].y;
int fdc = filledcolor;
byte *pos = &skin[x + skinwidth * y];
outpt = (outpt + 1) & FLOODFILL_FIFO_MASK;
if (x > 0)
FLOODFILL_STEP (-1, -1, 0);
if (x < skinwidth - 1)
FLOODFILL_STEP (1, 1, 0);
if (y > 0)
FLOODFILL_STEP (-skinwidth, 0, -1);
if (y < skinheight - 1)
FLOODFILL_STEP (skinwidth, 0, 1);
skin[x + skinwidth * y] = fdc;
}
}
void *
Mod_LoadSkin (byte * skin, int skinsize, int snum, int gnum, qboolean group,
maliasskindesc_t *skindesc)
{
char name[32];
int fb_texnum = 0;
int texnum = 0;
byte *pskin;
pskin = Hunk_AllocName (skinsize, loadname);
skindesc->skin = (byte *) pskin - (byte *) pheader;
memcpy (pskin, skin, skinsize);
Mod_FloodFillSkin (pskin, pheader->mdl.skinwidth, pheader->mdl.skinheight);
// save 8 bit texels for the player model to remap
if (strequal (loadmodel->name, "progs/player.mdl")) {
if (skinsize > sizeof (player_8bit_texels))
Sys_Error ("Player skin too large");
memcpy (player_8bit_texels, pskin, skinsize);
}
if (!loadmodel->fullbright) {
if (group) {
snprintf (name, sizeof (name), "fb_%s_%i_%i", loadmodel->name,
snum, gnum);
} else {
snprintf (name, sizeof (name), "fb_%s_%i", loadmodel->name, snum);
}
fb_texnum = Mod_Fullbright (pskin, pheader->mdl.skinwidth,
pheader->mdl.skinheight, name);
}
if (group) {
snprintf (name, sizeof (name), "%s_%i_%i", loadmodel->name, snum, gnum);
} else {
snprintf (name, sizeof (name), "%s_%i", loadmodel->name, snum);
}
texnum = GL_LoadTexture (name, pheader->mdl.skinwidth,
pheader->mdl.skinheight, pskin, true, false, 1);
skindesc->texnum = texnum;
skindesc->fb_texnum = fb_texnum;
loadmodel->hasfullbrights = fb_texnum;
// alpha param was true for non group skins
return skin + skinsize;
}
void *
Mod_LoadAliasFrame (void *pin, int *posenum, maliasframedesc_t *frame, int extra)
{
trivertx_t *pinframe;
int i;
daliasframe_t *pdaliasframe;
pdaliasframe = (daliasframe_t *) pin;
strcpy (frame->name, pdaliasframe->name);
frame->firstpose = (*posenum);
frame->numposes = 1;
for (i = 0; i < 3; i++) {
// byte values, don't worry about endianness
frame->bboxmin.v[i] = pdaliasframe->bboxmin.v[i];
frame->bboxmax.v[i] = pdaliasframe->bboxmax.v[i];
}
pinframe = (trivertx_t *) (pdaliasframe + 1);
poseverts[(*posenum)] = pinframe;
(*posenum)++;
if (extra)
pinframe += pheader->mdl.numverts * 2;
else
pinframe += pheader->mdl.numverts;
return (void *) pinframe;
}
void *
Mod_LoadAliasGroup (void *pin, int *posenum, maliasframedesc_t *frame, int extra)
{
daliasgroup_t *pingroup;
int i, numframes;
daliasinterval_t *pin_intervals;
void *ptemp;
pingroup = (daliasgroup_t *) pin;
numframes = LittleLong (pingroup->numframes);
frame->firstpose = (*posenum);
frame->numposes = numframes;
for (i = 0; i < 3; i++) {
// these are byte values, so we don't have to worry about endianness
frame->bboxmin.v[i] = pingroup->bboxmin.v[i];
frame->bboxmax.v[i] = pingroup->bboxmax.v[i];
}
pin_intervals = (daliasinterval_t *) (pingroup + 1);
frame->interval = LittleFloat (pin_intervals->interval);
pin_intervals += numframes;
ptemp = (void *) pin_intervals;
for (i = 0; i < numframes; i++) {
poseverts[(*posenum)] = (trivertx_t *) ((daliasframe_t *) ptemp + 1);
(*posenum)++;
if (extra)
ptemp = (trivertx_t *) ((daliasframe_t *) ptemp + 1)
+ pheader->mdl.numverts * 2;
else
ptemp = (trivertx_t *) ((daliasframe_t *) ptemp + 1)
+ pheader->mdl.numverts;
}
return ptemp;
}
void
Mod_FinalizeAliasModel (model_t *m, aliashdr_t *hdr)
{
if (strequal (m->name, "progs/eyes.mdl")) {
hdr->mdl.scale_origin[2] -= (22 + 8);
VectorScale (hdr->mdl.scale, 2, hdr->mdl.scale);
}
}
void
Mod_LoadExternalSkin (maliasskindesc_t *pskindesc, char *filename)
{
VFile *f;
tex_t *targa;
COM_FOpenFile (filename, &f);
if (f)
{
targa = LoadTGA (f);
Qclose (f);
if (targa->format < 4)
pskindesc->texnum = GL_LoadTexture ("", targa->width,
targa->height, targa->data, true, false, 3);
else
pskindesc->texnum = GL_LoadTexture ("", targa->width,
targa->height, targa->data, true, true, 4);
}
}
void
Mod_LoadExternalSkins (model_t *mod)
{
char filename[MAX_QPATH + 4];
maliasskindesc_t *pskindesc;
maliasskingroup_t *pskingroup;
int i, j;
for (i = 0; i < pheader->mdl.numskins; i++) {
pskindesc = ((maliasskindesc_t *)
((byte *) pheader + pheader->skindesc)) + i;
if (pskindesc->type == ALIAS_SKIN_SINGLE) {
snprintf (filename, sizeof (filename), "%s_%i.tga", mod->name, i);
Mod_LoadExternalSkin (pskindesc, filename);
} else {
pskingroup = (maliasskingroup_t *)
((byte *) pheader + pskindesc->skin);
for (j = 0; j < pskingroup->numskins; j++) {
snprintf (filename, sizeof (filename), "%s_%i_%i.tga", mod->name, i, j);
Mod_LoadExternalSkin (pskingroup->skindescs + j, filename);
}
}
}
}
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