1/*
2 * Mesa 3-D graphics library
3 * Version:  7.1
4 *
5 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25#ifndef TEXCOMPRESS_S3TC_H
26#define TEXCOMPRESS_S3TC_H
27
28#include "compiler.h"
29#include "glheader.h"
30#include "mfeatures.h"
31#include "texstore.h"
32
33struct gl_context;
34struct swrast_texture_image;
35
36#if FEATURE_texture_s3tc
37
38extern GLboolean
39_mesa_texstore_rgb_dxt1(TEXSTORE_PARAMS);
40
41extern GLboolean
42_mesa_texstore_rgba_dxt1(TEXSTORE_PARAMS);
43
44extern GLboolean
45_mesa_texstore_rgba_dxt3(TEXSTORE_PARAMS);
46
47extern GLboolean
48_mesa_texstore_rgba_dxt5(TEXSTORE_PARAMS);
49
50extern void
51_mesa_fetch_texel_rgb_dxt1(const struct swrast_texture_image *texImage,
52                           GLint i, GLint j, GLint k, GLfloat *texel);
53
54extern void
55_mesa_fetch_texel_rgba_dxt1(const struct swrast_texture_image *texImage,
56                            GLint i, GLint j, GLint k, GLfloat *texel);
57
58extern void
59_mesa_fetch_texel_rgba_dxt3(const struct swrast_texture_image *texImage,
60                            GLint i, GLint j, GLint k, GLfloat *texel);
61
62extern void
63_mesa_fetch_texel_rgba_dxt5(const struct swrast_texture_image *texImage,
64                            GLint i, GLint j, GLint k, GLfloat *texel);
65
66extern void
67_mesa_fetch_texel_srgb_dxt1(const struct swrast_texture_image *texImage,
68                            GLint i, GLint j, GLint k, GLfloat *texel);
69
70extern void
71_mesa_fetch_texel_srgba_dxt1(const struct swrast_texture_image *texImage,
72                             GLint i, GLint j, GLint k, GLfloat *texel);
73
74extern void
75_mesa_fetch_texel_srgba_dxt3(const struct swrast_texture_image *texImage,
76                             GLint i, GLint j, GLint k, GLfloat *texel);
77
78extern void
79_mesa_fetch_texel_srgba_dxt5(const struct swrast_texture_image *texImage,
80                             GLint i, GLint j, GLint k, GLfloat *texel);
81
82extern void
83_mesa_init_texture_s3tc(struct gl_context *ctx);
84
85#else /* FEATURE_texture_s3tc */
86
87/* these are used only in texstore_funcs[] */
88#define _mesa_texstore_rgb_dxt1 NULL
89#define _mesa_texstore_rgba_dxt1 NULL
90#define _mesa_texstore_rgba_dxt3 NULL
91#define _mesa_texstore_rgba_dxt5 NULL
92
93/* these are used only in texfetch_funcs[] */
94#define _mesa_fetch_texel_2d_f_rgb_dxt1 NULL
95#define _mesa_fetch_texel_2d_f_rgba_dxt1 NULL
96#define _mesa_fetch_texel_2d_f_rgba_dxt3 NULL
97#define _mesa_fetch_texel_2d_f_rgba_dxt5 NULL
98#define _mesa_fetch_texel_2d_f_srgb_dxt1 NULL
99#define _mesa_fetch_texel_2d_f_srgba_dxt1 NULL
100#define _mesa_fetch_texel_2d_f_srgba_dxt3 NULL
101#define _mesa_fetch_texel_2d_f_srgba_dxt5 NULL
102
103static inline void
104_mesa_init_texture_s3tc(struct gl_context *ctx)
105{
106}
107
108#endif /* FEATURE_texture_s3tc */
109
110#endif /* TEXCOMPRESS_S3TC_H */
111