2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
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28 * Texture formats definitions.
30 * \author Gareth Hughes
42 * Mesa internal texture image formats.
43 * All texture images are stored in one of these formats.
45 * NOTE: when you add a new format, be sure to update the do_row()
46 * function in texstore.c used for auto mipmap generation.
50 * \name Hardware-friendly formats.
52 * Drivers can override the default formats and convert texture images to
53 * one of these as required. The driver's
54 * dd_function_table::ChooseTextureFormat function will choose one of these
57 * \note In the default case, some of these formats will be duplicates of
58 * the generic formats listed below. However, these formats guarantee their
59 * internal component sizes, while GLchan may vary between GLubyte, GLushort
63 /* msb <------ TEXEL BITS -----------> lsb */
64 /* ---- ---- ---- ---- ---- ---- ---- ---- */
65 MESA_FORMAT_RGBA8888
, /* RRRR RRRR GGGG GGGG BBBB BBBB AAAA AAAA */
66 MESA_FORMAT_RGBA8888_REV
, /* AAAA AAAA BBBB BBBB GGGG GGGG RRRR RRRR */
67 MESA_FORMAT_ARGB8888
, /* AAAA AAAA RRRR RRRR GGGG GGGG BBBB BBBB */
68 MESA_FORMAT_ARGB8888_REV
, /* BBBB BBBB GGGG GGGG RRRR RRRR AAAA AAAA */
69 MESA_FORMAT_RGB888
, /* RRRR RRRR GGGG GGGG BBBB BBBB */
70 MESA_FORMAT_BGR888
, /* BBBB BBBB GGGG GGGG RRRR RRRR */
71 MESA_FORMAT_RGB565
, /* RRRR RGGG GGGB BBBB */
72 MESA_FORMAT_RGB565_REV
, /* GGGB BBBB RRRR RGGG */
73 MESA_FORMAT_ARGB4444
, /* AAAA RRRR GGGG BBBB */
74 MESA_FORMAT_ARGB4444_REV
, /* GGGG BBBB AAAA RRRR */
75 MESA_FORMAT_ARGB1555
, /* ARRR RRGG GGGB BBBB */
76 MESA_FORMAT_ARGB1555_REV
, /* GGGB BBBB ARRR RRGG */
77 MESA_FORMAT_AL88
, /* AAAA AAAA LLLL LLLL */
78 MESA_FORMAT_AL88_REV
, /* LLLL LLLL AAAA AAAA */
79 MESA_FORMAT_RGB332
, /* RRRG GGBB */
80 MESA_FORMAT_A8
, /* AAAA AAAA */
81 MESA_FORMAT_L8
, /* LLLL LLLL */
82 MESA_FORMAT_I8
, /* IIII IIII */
83 MESA_FORMAT_CI8
, /* CCCC CCCC */
84 MESA_FORMAT_YCBCR
, /* YYYY YYYY UorV UorV */
85 MESA_FORMAT_YCBCR_REV
, /* UorV UorV YYYY YYYY */
86 MESA_FORMAT_Z24_S8
, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ SSSS SSSS */
87 MESA_FORMAT_S8_Z24
, /* SSSS SSSS ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
88 MESA_FORMAT_Z16
, /* ZZZZ ZZZZ ZZZZ ZZZZ */
89 MESA_FORMAT_Z32
, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
92 #if FEATURE_EXT_texture_sRGB
94 * \name 8-bit/channel sRGB formats
101 MESA_FORMAT_SRGB_DXT1
,
106 * \name Compressed texture formats.
109 #if FEATURE_texture_fxt1
110 MESA_FORMAT_RGB_FXT1
,
111 MESA_FORMAT_RGBA_FXT1
,
113 #if FEATURE_texture_s3tc
114 MESA_FORMAT_RGB_DXT1
,
115 MESA_FORMAT_RGBA_DXT1
,
116 MESA_FORMAT_RGBA_DXT3
,
117 MESA_FORMAT_RGBA_DXT5
,
122 * \name Generic GLchan-based formats.
124 * Software-oriented texture formats. Texels are arrays of GLchan
125 * values so there are no byte order issues.
127 * \note Because these are based on the GLchan data type, one cannot assume
128 * 8 bits per channel with these formats. If you require GLubyte channels,
129 * use one of the hardware formats above.
135 MESA_FORMAT_LUMINANCE
,
136 MESA_FORMAT_LUMINANCE_ALPHA
,
137 MESA_FORMAT_INTENSITY
,
141 * \name Floating point texture formats.
144 MESA_FORMAT_RGBA_FLOAT32
,
145 MESA_FORMAT_RGBA_FLOAT16
,
146 MESA_FORMAT_RGB_FLOAT32
,
147 MESA_FORMAT_RGB_FLOAT16
,
148 MESA_FORMAT_ALPHA_FLOAT32
,
149 MESA_FORMAT_ALPHA_FLOAT16
,
150 MESA_FORMAT_LUMINANCE_FLOAT32
,
151 MESA_FORMAT_LUMINANCE_FLOAT16
,
152 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32
,
153 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16
,
154 MESA_FORMAT_INTENSITY_FLOAT32
,
155 MESA_FORMAT_INTENSITY_FLOAT16
160 /** GLchan-valued formats */
162 extern const struct gl_texture_format _mesa_texformat_rgba
;
163 extern const struct gl_texture_format _mesa_texformat_rgb
;
164 extern const struct gl_texture_format _mesa_texformat_alpha
;
165 extern const struct gl_texture_format _mesa_texformat_luminance
;
166 extern const struct gl_texture_format _mesa_texformat_luminance_alpha
;
167 extern const struct gl_texture_format _mesa_texformat_intensity
;
170 #if FEATURE_EXT_texture_sRGB
171 /** sRGB (nonlinear) formats */
173 extern const struct gl_texture_format _mesa_texformat_srgb8
;
174 extern const struct gl_texture_format _mesa_texformat_srgba8
;
175 extern const struct gl_texture_format _mesa_texformat_sl8
;
176 extern const struct gl_texture_format _mesa_texformat_sla8
;
177 extern const struct gl_texture_format _mesa_texformat_srgb_dxt1
;
181 /** Floating point texture formats */
183 extern const struct gl_texture_format _mesa_texformat_rgba_float32
;
184 extern const struct gl_texture_format _mesa_texformat_rgba_float16
;
185 extern const struct gl_texture_format _mesa_texformat_rgb_float32
;
186 extern const struct gl_texture_format _mesa_texformat_rgb_float16
;
187 extern const struct gl_texture_format _mesa_texformat_alpha_float32
;
188 extern const struct gl_texture_format _mesa_texformat_alpha_float16
;
189 extern const struct gl_texture_format _mesa_texformat_luminance_float32
;
190 extern const struct gl_texture_format _mesa_texformat_luminance_float16
;
191 extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float32
;
192 extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float16
;
193 extern const struct gl_texture_format _mesa_texformat_intensity_float32
;
194 extern const struct gl_texture_format _mesa_texformat_intensity_float16
;
197 /** \name Assorted hardware-friendly formats */
199 extern const struct gl_texture_format _mesa_texformat_rgba8888
;
200 extern const struct gl_texture_format _mesa_texformat_rgba8888_rev
;
201 extern const struct gl_texture_format _mesa_texformat_argb8888
;
202 extern const struct gl_texture_format _mesa_texformat_argb8888_rev
;
203 extern const struct gl_texture_format _mesa_texformat_rgb888
;
204 extern const struct gl_texture_format _mesa_texformat_bgr888
;
205 extern const struct gl_texture_format _mesa_texformat_rgb565
;
206 extern const struct gl_texture_format _mesa_texformat_rgb565_rev
;
207 extern const struct gl_texture_format _mesa_texformat_argb4444
;
208 extern const struct gl_texture_format _mesa_texformat_argb4444_rev
;
209 extern const struct gl_texture_format _mesa_texformat_argb1555
;
210 extern const struct gl_texture_format _mesa_texformat_argb1555_rev
;
211 extern const struct gl_texture_format _mesa_texformat_al88
;
212 extern const struct gl_texture_format _mesa_texformat_al88_rev
;
213 extern const struct gl_texture_format _mesa_texformat_rgb332
;
214 extern const struct gl_texture_format _mesa_texformat_a8
;
215 extern const struct gl_texture_format _mesa_texformat_l8
;
216 extern const struct gl_texture_format _mesa_texformat_i8
;
217 extern const struct gl_texture_format _mesa_texformat_ci8
;
218 extern const struct gl_texture_format _mesa_texformat_z24_s8
;
219 extern const struct gl_texture_format _mesa_texformat_s8_z24
;
220 extern const struct gl_texture_format _mesa_texformat_z16
;
221 extern const struct gl_texture_format _mesa_texformat_z32
;
224 /** \name YCbCr formats */
226 extern const struct gl_texture_format _mesa_texformat_ycbcr
;
227 extern const struct gl_texture_format _mesa_texformat_ycbcr_rev
;
230 /** \name Compressed formats */
232 #if FEATURE_texture_fxt1
233 extern const struct gl_texture_format _mesa_texformat_rgb_fxt1
;
234 extern const struct gl_texture_format _mesa_texformat_rgba_fxt1
;
236 #if FEATURE_texture_s3tc
237 extern const struct gl_texture_format _mesa_texformat_rgb_dxt1
;
238 extern const struct gl_texture_format _mesa_texformat_rgba_dxt1
;
239 extern const struct gl_texture_format _mesa_texformat_rgba_dxt3
;
240 extern const struct gl_texture_format _mesa_texformat_rgba_dxt5
;
244 /** \name The null format */
246 extern const struct gl_texture_format _mesa_null_texformat
;
250 extern const struct gl_texture_format
*
251 _mesa_choose_tex_format( GLcontext
*ctx
, GLint internalFormat
,
252 GLenum format
, GLenum type
);
256 _mesa_format_to_type_and_comps(const struct gl_texture_format
*format
,
257 GLenum
*datatype
, GLuint
*comps
);