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

114 lines
2.5 KiB
C
Raw Normal View History

/*
gl_dyn_textures.c
Dynamic texture generation.
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
#define NH_DEFINE
#include "namehack.h"
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "QF/image.h"
#include "QF/qtypes.h"
#include "QF/GL/defines.h"
#include "QF/GL/funcs.h"
#include "QF/GL/qf_textures.h"
#include "QF/GL/qf_vid.h"
#include "r_internal.h"
int gl_part_tex;
static GLint part_tex_internal_format = 2;
static void
GDT_InitParticleTexture (void)
{
byte data[64][64][2];
memset (data, 0, sizeof (data));
gl_part_tex = gl_texture_number++;
qfglBindTexture (GL_TEXTURE_2D, gl_part_tex);
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2003-02-06 21:47:33 +00:00
qfglTexImage2D (GL_TEXTURE_2D, 0, part_tex_internal_format, 64, 64, 0, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, data);
}
static void
GDT_InitDotParticleTexture (void)
{
tex_t *tex;
tex = R_DotParticleTexture ();
qfglTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
}
static void
GDT_InitSparkParticleTexture (void)
{
tex_t *tex;
tex = R_SparkParticleTexture ();
qfglTexSubImage2D (GL_TEXTURE_2D, 0, 32, 0, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
}
static void
GDT_InitSmokeParticleTexture (void)
{
tex_t *tex;
tex = R_SmokeParticleTexture ();
qfglTexSubImage2D (GL_TEXTURE_2D, 0, 0, 32, 32, 32, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, tex->data);
free (tex);
}
void
GDT_Init (void)
{
2003-02-06 21:47:33 +00:00
if (gl_feature_mach64)
part_tex_internal_format = 4;
GDT_InitParticleTexture ();
GDT_InitDotParticleTexture ();
GDT_InitSparkParticleTexture ();
GDT_InitSmokeParticleTexture ();
}