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newtree/source/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
$Id$
*/
// 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 "console.h"
#include "glquake.h"
#include "model.h"
#include "qendian.h"
#include "server.h"
#include "skin.h"
extern model_t *loadmodel;
/*
==============================================================================
ALIAS MODELS
==============================================================================
*/
extern aliashdr_t *pheader;
extern stvert_t stverts[MAXALIASVERTS];
extern mtriangle_t triangles[MAXALIASTRIS];
// a pose is a single set of vertexes. a frame may be
// an animating sequence of poses
extern trivertx_t *poseverts[MAXALIASFRAMES];
extern int posenum;
//=========================================================
/*
=================
Mod_FloodFillSkin
Fill background pixels so mipmapping doesn't have haloes - Ed
=================
*/
typedef struct {
short x, y;
} floodfill_t;
extern unsigned int d_8to24table[];
// 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 to transparent color (used as visited
// marker)
if ((fillcolor == filledcolor) || (fillcolor == 255)) {
// 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;
}
}
int Mod_Fullbright (byte * skin, int width, int height, char *name);
void *
Mod_LoadSkin (byte * skin, int skinsize, int snum, int gnum, qboolean group)
{
char name[32];
int fbtexnum;
Mod_FloodFillSkin (skin, pheader->mdl.skinwidth, pheader->mdl.skinheight);
// save 8 bit texels for the player model to remap
if (!strcmp (loadmodel->name, "progs/player.mdl")) {
if (skinsize > sizeof (player_8bit_texels))
SV_Error ("Player skin too large");
memcpy (player_8bit_texels, skin, skinsize);
}
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);
}
fbtexnum =
Mod_Fullbright (skin + 1, pheader->mdl.skinwidth,
pheader->mdl.skinheight, name);
if ((loadmodel->hasfullbrights = (fbtexnum))) {
pheader->gl_fb_texturenum[snum][gnum] = fbtexnum;
}
if (group) {
snprintf (name, sizeof (name), "%s_%i_%i", loadmodel->name, snum, gnum);
} else {
snprintf (name, sizeof (name), "%s_%i", loadmodel->name, snum);
}
pheader->gl_texturenum[snum][gnum] =
GL_LoadTexture (name, pheader->mdl.skinwidth,
pheader->mdl.skinheight, skin, true, false, 1);
// alpha param was true for non group skins
return skin + skinsize;
}
/*
===============
Mod_LoadAllSkins
===============
*/
void *
Mod_LoadAllSkins (int numskins, daliasskintype_t *pskintype, int *pskinindex)
{
int i, j, k;
int skinsize;
byte *skin;
daliasskingroup_t *pinskingroup;
int groupskins;
daliasskininterval_t *pinskinintervals;
if (numskins < 1 || numskins > MAX_SKINS)
SV_Error ("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
skinsize = pheader->mdl.skinwidth * pheader->mdl.skinheight;
for (i = 0; i < numskins; i++) {
if (pskintype->type == ALIAS_SKIN_SINGLE) {
skin = (byte *) (pskintype + 1);
skin = Mod_LoadSkin (skin, skinsize, i, 0, false);
for (j = 1; j < 4; j++) {
pheader->gl_texturenum[i][j] = pheader->gl_texturenum[i][j - 1];
pheader->gl_fb_texturenum[i][j] =
pheader->gl_fb_texturenum[i][j - 1];
}
} else {
// animating skin group. yuck.
// Con_Printf("Animating Skin Group, if you get this message
// please notify warp@debian.org\n");
pskintype++;
pinskingroup = (daliasskingroup_t *) pskintype;
groupskins = LittleLong (pinskingroup->numskins);
pinskinintervals = (daliasskininterval_t *) (pinskingroup + 1);
pskintype = (void *) (pinskinintervals + groupskins);
skin = (byte *) pskintype;
for (j = 0; j < groupskins; j++) {
skin = Mod_LoadSkin (skin, skinsize, i, j & 3, true);
}
k = j;
for ( /* */ ; j < 4; j++) {
pheader->gl_texturenum[i][j] = pheader->gl_texturenum[i][j - k];
pheader->gl_fb_texturenum[i][j] =
pheader->gl_fb_texturenum[i][j - k];
}
}
pskintype = (daliasskintype_t *) skin;
}
return pskintype;
}
/*
=================
Mod_LoadAliasFrame
=================
*/
void *
Mod_LoadAliasFrame (void *pin, maliasframedesc_t *frame)
{
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->bboxmin.v[i] = pdaliasframe->bboxmax.v[i];
}
pinframe = (trivertx_t *) (pdaliasframe + 1);
poseverts[posenum] = pinframe;
posenum++;
pinframe += pheader->mdl.numverts;
return (void *) pinframe;
}
/*
=================
Mod_LoadAliasGroup
=================
*/
void *
Mod_LoadAliasGroup (void *pin, maliasframedesc_t *frame)
{
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->bboxmin.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++;
ptemp = (trivertx_t *) ((daliasframe_t *) ptemp + 1) + pheader->mdl.numverts;
}
return ptemp;
}
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