quakeforge/libs/video/renderer/gl/gl_skin.c

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/*
gl_skin.c
(description)
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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((unused)) const char rcsid[] =
"$Id$";
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#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "QF/console.h"
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#include "QF/cvar.h"
#include "QF/image.h"
#include "QF/render.h"
#include "QF/skin.h"
#include "QF/GL/defines.h"
#include "QF/GL/funcs.h"
#include "QF/GL/qf_textures.h"
#include "compat.h"
#include "r_cvar.h"
static byte translate[256];
static unsigned int translate32[256];
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static int player_width = 296;
static int player_height = 194;
void
Skin_Set_Translate (int top, int bottom, void *_dest)
{
int i;
top = bound (0, top, 13) << 4;
bottom = bound (0, bottom, 13) << 4;
if (VID_Is8bit ()) { // 8bit texture upload
for (i = 0; i < 16; i++) {
// the artists made some backwards ranges. sigh.
if (top < 128)
translate[TOP_RANGE + i] = top + i;
else
translate[TOP_RANGE + i] = top + 15 - i;
if (bottom < 128)
translate[BOTTOM_RANGE + i] = bottom + i;
else
translate[BOTTOM_RANGE + i] = bottom + 15 - i;
}
} else {
if (top < 128)
memcpy (translate32 + TOP_RANGE, d_8to24table + top,
16 * sizeof (unsigned int));
else
for (i = 0; i < 16; i++)
translate32[TOP_RANGE + i] = d_8to24table[top + 15 - i];
if (bottom < 128)
memcpy (translate32 + BOTTOM_RANGE, d_8to24table + bottom,
16 * sizeof (unsigned int));
else
for (i = 0; i < 16; i++)
translate32[BOTTOM_RANGE + i] = d_8to24table[bottom + 15 - i];
}
}
static inline void
build_skin_8 (byte * original, int tinwidth, int tinheight,
unsigned int scaled_width, unsigned int scaled_height,
int inwidth, qboolean alpha)
{
// Improvements should be mirrored in GL_ResampleTexture in gl_textures.c
byte *inrow;
byte pixels[512 * 256], *out;
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unsigned int i, j;
unsigned int frac, fracstep;
out = pixels;
memset (pixels, 0, sizeof (pixels));
fracstep = tinwidth * 0x10000 / scaled_width;
for (i = 0; i < scaled_height; i++, out += scaled_width) {
inrow = original + inwidth * (i * tinheight / scaled_height);
frac = fracstep >> 1;
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for (j = 0; j < scaled_width; j++) {
out[j] = translate[inrow[frac >> 16]];
frac += fracstep;
}
}
GL_Upload8_EXT ((byte *) pixels, scaled_width, scaled_height, false,
alpha);
}
static inline void
build_skin_32 (byte * original, int tinwidth, int tinheight,
unsigned int scaled_width, unsigned int scaled_height,
int inwidth, qboolean alpha)
{
// Improvements should be mirrored in GL_ResampleTexture in gl_textures.c
byte *inrow;
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unsigned int i, j;
int samples = alpha ? gl_alpha_format : gl_solid_format;
unsigned int frac, fracstep;
unsigned int pixels[512 * 256], *out;
out = pixels;
memset (pixels, 0, sizeof (pixels));
fracstep = tinwidth * 0x10000 / scaled_width;
for (i = 0; i < scaled_height; i++, out += scaled_width) {
inrow = original + inwidth * (i * tinheight / scaled_height);
frac = fracstep >> 1;
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for (j = 0; j < scaled_width; j++) {
out[j] = translate32[inrow[frac >> 16]];
frac += fracstep;
}
}
qfglTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, pixels);
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
static void
build_skin (int texnum, byte *ptexels, int width, int height,
int owidth, int oheight, qboolean alpha)
{
unsigned int scaled_width, scaled_height;
// because this happens during gameplay, do it fast
// instead of sending it through GL_Upload8()
qfglBindTexture (GL_TEXTURE_2D, texnum);
// FIXME deek: This 512x256 limit sucks!
scaled_width = min (gl_max_size->int_val, 512);
scaled_height = min (gl_max_size->int_val, 256);
// allow users to crunch sizes down even more if they want
scaled_width >>= gl_playermip->int_val;
scaled_height >>= gl_playermip->int_val;
if (VID_Is8bit ()) { // 8bit texture upload
build_skin_8 (ptexels, owidth, oheight, scaled_width, scaled_height,
width, alpha);
} else {
build_skin_32 (ptexels, owidth, oheight, scaled_width, scaled_height,
width, alpha);
}
}
void
Skin_Do_Translation (skin_t *player_skin, int slot, skin_t *skin)
{
byte *original;
int inwidth, inheight;
int texnum = skin->texture;
tex_t *skin_texels;
if ((skin_texels = (tex_t *) Skin_Cache (player_skin)) != NULL) {
// skin data width
inwidth = 320;
inheight = 200;
original = skin_texels->data;
} else {
original = player_8bit_texels;
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inwidth = player_width;
inheight = player_height;
}
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build_skin (texnum, original, inwidth, inheight,
player_width, player_height, false);
}
void
Skin_Do_Translation_Model (model_t *model, int skinnum, int slot, skin_t *skin)
{
byte *original;
int inwidth, inheight;
int texnum = skin->texture;
aliashdr_t *paliashdr;
maliasskindesc_t *pskindesc;
if (!model) // player doesn't have a model yet
return;
if (model->type != mod_alias) // only translate skins on alias models
return;
paliashdr = Cache_Get (&model->cache);
if (skinnum < 0
|| skinnum >= paliashdr->mdl.numskins) {
Con_Printf ("(%d): Invalid player skin #%d\n", slot,
skinnum);
skinnum = 0;
}
pskindesc = ((maliasskindesc_t *)
((byte *) paliashdr + paliashdr->skindesc)) + skinnum;
//FIXME: broken for skin groups
original = (byte *) paliashdr + pskindesc->skin;
inwidth = paliashdr->mdl.skinwidth;
inheight = paliashdr->mdl.skinheight;
build_skin (texnum, original, inwidth, inheight, inwidth, inheight, false);
Cache_Release (&model->cache);
}
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void
Skin_Player_Model (model_t *model)
{
aliashdr_t *paliashdr;
player_width = 296;
player_height = 194;
if (!model) // player doesn't have a model yet
return;
if (model->type != mod_alias) // only translate skins on alias models
return;
paliashdr = Cache_Get (&model->cache);
player_width = paliashdr->mdl.skinwidth;
player_height = paliashdr->mdl.skinheight;
Cache_Release (&model->cache);
}
void
Skin_Init_Translation (void)
{
int i;
for (i = 0; i < 256; i++) {
translate[i] = i;
translate32[i] = d_8to24table[i];
}
}
void
Skin_Process (skin_t *skin, tex_t *tex)
{
int pixels = tex->width * tex->height;
byte *ptexels = Hunk_TempAlloc (pixels);
skin->fb_texture = 0;
if (Mod_CalcFullbright (tex->data, ptexels, pixels)) {
skin->fb_texture = skin_fb_textures + (skin - skin_cache);
build_skin (skin->fb_texture, ptexels, tex->width, tex->height,
296, 194, true);
}
}