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author | marha <marha@users.sourceforge.net> | 2009-10-09 06:31:44 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-10-09 06:31:44 +0000 |
commit | 06456f5db88b434c3634ede42bdbfdce78fc4249 (patch) | |
tree | 97f5174e2d3da40faee7f2ad8858233da3d0166e /mesalib/src/mesa/main/texformat.c | |
parent | 7b230a3fe2d6c83488d9eec43067fe8ba8ac081b (diff) | |
parent | a0c4815433ccd57322f4f7703ca35e9ccfa59250 (diff) | |
download | vcxsrv-06456f5db88b434c3634ede42bdbfdce78fc4249.tar.gz vcxsrv-06456f5db88b434c3634ede42bdbfdce78fc4249.tar.bz2 vcxsrv-06456f5db88b434c3634ede42bdbfdce78fc4249.zip |
svn merge ^/branches/released . --username marha
Diffstat (limited to 'mesalib/src/mesa/main/texformat.c')
-rw-r--r-- | mesalib/src/mesa/main/texformat.c | 1989 |
1 files changed, 1989 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c new file mode 100644 index 000000000..c70900478 --- /dev/null +++ b/mesalib/src/mesa/main/texformat.c @@ -0,0 +1,1989 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5.1 + * + * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * Copyright (c) 2008 VMware, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file texformat.c + * Texture formats. + * + * \author Gareth Hughes + */ + + +#include "colormac.h" +#include "context.h" +#include "texformat.h" +#include "texstore.h" + + +#if FEATURE_EXT_texture_sRGB + +/** + * Convert an 8-bit sRGB value from non-linear space to a + * linear RGB value in [0, 1]. + * Implemented with a 256-entry lookup table. + */ +static INLINE GLfloat +nonlinear_to_linear(GLubyte cs8) +{ + static GLfloat table[256]; + static GLboolean tableReady = GL_FALSE; + if (!tableReady) { + /* compute lookup table now */ + GLuint i; + for (i = 0; i < 256; i++) { + const GLfloat cs = UBYTE_TO_FLOAT(i); + if (cs <= 0.04045) { + table[i] = cs / 12.92f; + } + else { + table[i] = (GLfloat) _mesa_pow((cs + 0.055) / 1.055, 2.4); + } + } + tableReady = GL_TRUE; + } + return table[cs8]; +} + + +#endif /* FEATURE_EXT_texture_sRGB */ + + +/* Texel fetch routines for all supported formats + */ +#define DIM 1 +#include "texformat_tmp.h" + +#define DIM 2 +#include "texformat_tmp.h" + +#define DIM 3 +#include "texformat_tmp.h" + +/** + * Null texel fetch function. + * + * Have to have this so the FetchTexel function pointer is never NULL. + */ +static void fetch_null_texel( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + (void) texImage; (void) i; (void) j; (void) k; + texel[RCOMP] = 0; + texel[GCOMP] = 0; + texel[BCOMP] = 0; + texel[ACOMP] = 0; + _mesa_warning(NULL, "fetch_null_texel() called!"); +} + +static void fetch_null_texelf( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + (void) texImage; (void) i; (void) j; (void) k; + texel[RCOMP] = 0.0; + texel[GCOMP] = 0.0; + texel[BCOMP] = 0.0; + texel[ACOMP] = 0.0; + _mesa_warning(NULL, "fetch_null_texelf() called!"); +} + +static void store_null_texel(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const void *texel) +{ + (void) texImage; + (void) i; + (void) j; + (void) k; + (void) texel; + /* no-op */ +} + + +/** + * Notes about the predefined gl_texture_formats: + * + * 1. There are 1D, 2D and 3D functions for fetching texels from texture + * images, returning both GLchan values and GLfloat values. (six + * functions in total) + * You don't have to provide both the GLchan and GLfloat functions; + * just one or the other is OK. Mesa will use an "adaptor" to convert + * between GLchan/GLfloat when needed. + * Since the adaptors have small performance penalty, we provide both + * GLchan and GLfloat functions for some common formats like RGB, RGBA. + */ + + +/***************************************************************/ +/** \name Default GLchan-based formats */ +/*@{*/ + +const struct gl_texture_format _mesa_texformat_rgba = { + MESA_FORMAT_RGBA, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + CHAN_BITS, /* RedBits */ + CHAN_BITS, /* GreenBits */ + CHAN_BITS, /* BlueBits */ + CHAN_BITS, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4 * sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgba, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba, /* FetchTexel3Df */ + store_texel_rgba /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb = { + MESA_FORMAT_RGB, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + CHAN_BITS, /* RedBits */ + CHAN_BITS, /* GreenBits */ + CHAN_BITS, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3 * sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgb, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb, /* FetchTexel3Df */ + store_texel_rgb /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_alpha = { + MESA_FORMAT_ALPHA, /* MesaFormat */ + GL_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + CHAN_BITS, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_alpha, /* FetchTexel1Df */ + fetch_texel_2d_f_alpha, /* FetchTexel2Df */ + fetch_texel_3d_f_alpha, /* FetchTexel3Df */ + store_texel_alpha /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance = { + MESA_FORMAT_LUMINANCE, /* MesaFormat */ + GL_LUMINANCE, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + CHAN_BITS, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance, /* FetchTexel1Df */ + fetch_texel_2d_f_luminance, /* FetchTexel2Df */ + fetch_texel_3d_f_luminance, /* FetchTexel3Df */ + store_texel_luminance /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance_alpha = { + MESA_FORMAT_LUMINANCE_ALPHA, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + CHAN_BITS, /* AlphaBits */ + CHAN_BITS, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2 * sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance_alpha, /* FetchTexel1Df */ + fetch_texel_2d_f_luminance_alpha, /* FetchTexel2Df */ + fetch_texel_3d_f_luminance_alpha, /* FetchTexel3Df */ + store_texel_luminance_alpha /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_intensity = { + MESA_FORMAT_INTENSITY, /* MesaFormat */ + GL_INTENSITY, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + CHAN_BITS, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + sizeof(GLchan), /* TexelBytes */ + _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_intensity, /* FetchTexel1Df */ + fetch_texel_2d_f_intensity, /* FetchTexel2Df */ + fetch_texel_3d_f_intensity, /* FetchTexel3Df */ + store_texel_intensity /* StoreTexel */ +}; + + +#if FEATURE_EXT_texture_sRGB + +const struct gl_texture_format _mesa_texformat_srgb8 = { + MESA_FORMAT_SRGB8, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3, /* TexelBytes */ + _mesa_texstore_srgb8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_srgb8, /* FetchTexel1Df */ + fetch_texel_2d_srgb8, /* FetchTexel2Df */ + fetch_texel_3d_srgb8, /* FetchTexel3Df */ + store_texel_srgb8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_srgba8 = { + MESA_FORMAT_SRGBA8, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_srgba8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_srgba8, /* FetchTexel1Df */ + fetch_texel_2d_srgba8, /* FetchTexel2Df */ + fetch_texel_3d_srgba8, /* FetchTexel3Df */ + store_texel_srgba8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_sargb8 = { + MESA_FORMAT_SARGB8, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_sargb8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_sargb8, /* FetchTexel1Df */ + fetch_texel_2d_sargb8, /* FetchTexel2Df */ + fetch_texel_3d_sargb8, /* FetchTexel3Df */ + store_texel_sargb8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_sl8 = { + MESA_FORMAT_SL8, /* MesaFormat */ + GL_LUMINANCE, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 8, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_sl8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_sl8, /* FetchTexel1Df */ + fetch_texel_2d_sl8, /* FetchTexel2Df */ + fetch_texel_3d_sl8, /* FetchTexel3Df */ + store_texel_sl8 /* StoreTexel */ +}; + +/* Note: this format name looks like a misnomer, make it sal8? */ +const struct gl_texture_format _mesa_texformat_sla8 = { + MESA_FORMAT_SLA8, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8, /* AlphaBits */ + 8, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_sla8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_sla8, /* FetchTexel1Df */ + fetch_texel_2d_sla8, /* FetchTexel2Df */ + fetch_texel_3d_sla8, /* FetchTexel3Df */ + store_texel_sla8 /* StoreTexel */ +}; + +#endif /* FEATURE_EXT_texture_sRGB */ + +const struct gl_texture_format _mesa_texformat_rgba_float32 = { + MESA_FORMAT_RGBA_FLOAT32, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 8 * sizeof(GLfloat), /* RedBits */ + 8 * sizeof(GLfloat), /* GreenBits */ + 8 * sizeof(GLfloat), /* BlueBits */ + 8 * sizeof(GLfloat), /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_rgba_f32, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba_f32, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba_f32, /* FetchTexel3Df */ + store_texel_rgba_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgba_float16 = { + MESA_FORMAT_RGBA_FLOAT16, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 8 * sizeof(GLhalfARB), /* RedBits */ + 8 * sizeof(GLhalfARB), /* GreenBits */ + 8 * sizeof(GLhalfARB), /* BlueBits */ + 8 * sizeof(GLhalfARB), /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_rgba_f16, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba_f16, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba_f16, /* FetchTexel3Df */ + store_texel_rgba_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb_float32 = { + MESA_FORMAT_RGB_FLOAT32, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 8 * sizeof(GLfloat), /* RedBits */ + 8 * sizeof(GLfloat), /* GreenBits */ + 8 * sizeof(GLfloat), /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_rgb_f32, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb_f32, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb_f32, /* FetchTexel3Df */ + store_texel_rgb_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb_float16 = { + MESA_FORMAT_RGB_FLOAT16, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 8 * sizeof(GLhalfARB), /* RedBits */ + 8 * sizeof(GLhalfARB), /* GreenBits */ + 8 * sizeof(GLhalfARB), /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_rgb_f16, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb_f16, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb_f16, /* FetchTexel3Df */ + store_texel_rgb_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_alpha_float32 = { + MESA_FORMAT_ALPHA_FLOAT32, /* MesaFormat */ + GL_ALPHA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8 * sizeof(GLfloat), /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_alpha_f32, /* FetchTexel1Df */ + fetch_texel_2d_f_alpha_f32, /* FetchTexel2Df */ + fetch_texel_3d_f_alpha_f32, /* FetchTexel3Df */ + store_texel_alpha_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_alpha_float16 = { + MESA_FORMAT_ALPHA_FLOAT16, /* MesaFormat */ + GL_ALPHA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8 * sizeof(GLhalfARB), /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_alpha_f16, /* FetchTexel1Df */ + fetch_texel_2d_f_alpha_f16, /* FetchTexel2Df */ + fetch_texel_3d_f_alpha_f16, /* FetchTexel3Df */ + store_texel_alpha_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance_float32 = { + MESA_FORMAT_LUMINANCE_FLOAT32, /* MesaFormat */ + GL_LUMINANCE, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 8 * sizeof(GLfloat), /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance_f32, /* FetchTexel1Df */ + fetch_texel_2d_f_luminance_f32, /* FetchTexel2Df */ + fetch_texel_3d_f_luminance_f32, /* FetchTexel3Df */ + store_texel_luminance_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance_float16 = { + MESA_FORMAT_LUMINANCE_FLOAT16, /* MesaFormat */ + GL_LUMINANCE, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 8 * sizeof(GLhalfARB), /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance_f16, /* FetchTexel1Df */ + fetch_texel_2d_f_luminance_f16, /* FetchTexel2Df */ + fetch_texel_3d_f_luminance_f16, /* FetchTexel3Df */ + store_texel_luminance_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance_alpha_float32 = { + MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8 * sizeof(GLfloat), /* AlphaBits */ + 8 * sizeof(GLfloat), /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance_alpha_f32,/* FetchTexel1Df */ + fetch_texel_2d_f_luminance_alpha_f32,/* FetchTexel2Df */ + fetch_texel_3d_f_luminance_alpha_f32,/* FetchTexel3Df */ + store_texel_luminance_alpha_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_luminance_alpha_float16 = { + MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8 * sizeof(GLhalfARB), /* AlphaBits */ + 8 * sizeof(GLhalfARB), /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_luminance_alpha_f16,/* FetchTexel1Df */ + fetch_texel_2d_f_luminance_alpha_f16,/* FetchTexel2Df */ + fetch_texel_3d_f_luminance_alpha_f16,/* FetchTexel3Df */ + store_texel_luminance_alpha_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_intensity_float32 = { + MESA_FORMAT_INTENSITY_FLOAT32, /* MesaFormat */ + GL_INTENSITY, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 8 * sizeof(GLfloat), /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLfloat), /* TexelBytes */ + _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_intensity_f32, /* FetchTexel1Df */ + fetch_texel_2d_f_intensity_f32, /* FetchTexel2Df */ + fetch_texel_3d_f_intensity_f32, /* FetchTexel3Df */ + store_texel_intensity_f32 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_intensity_float16 = { + MESA_FORMAT_INTENSITY_FLOAT16, /* MesaFormat */ + GL_INTENSITY, /* BaseFormat */ + GL_FLOAT, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 8 * sizeof(GLhalfARB), /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1 * sizeof(GLhalfARB), /* TexelBytes */ + _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_intensity_f16, /* FetchTexel1Df */ + fetch_texel_2d_f_intensity_f16, /* FetchTexel2Df */ + fetch_texel_3d_f_intensity_f16, /* FetchTexel3Df */ + store_texel_intensity_f16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_dudv8 = { + MESA_FORMAT_DUDV8, /* MesaFormat */ + GL_DUDV_ATI, /* BaseFormat */ + GL_SIGNED_NORMALIZED, /* DataType */ + /* maybe should add dudvBits field, but spec seems to be + lacking the ability to query with GetTexLevelParameter anyway */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_dudv8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_dudv8, /* FetchTexel1Df */ + fetch_texel_2d_dudv8, /* FetchTexel2Df */ + fetch_texel_3d_dudv8, /* FetchTexel3Df */ + NULL /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_signed_rgba8888 = { + MESA_FORMAT_SIGNED_RGBA8888, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_SIGNED_NORMALIZED, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_signed_rgba8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_signed_rgba8888, /* FetchTexel1Df */ + fetch_texel_2d_signed_rgba8888, /* FetchTexel2Df */ + fetch_texel_3d_signed_rgba8888, /* FetchTexel3Df */ + store_texel_signed_rgba8888 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_signed_rgba8888_rev = { + MESA_FORMAT_SIGNED_RGBA8888_REV, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_SIGNED_NORMALIZED, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_signed_rgba8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_signed_rgba8888_rev, /* FetchTexel1Df */ + fetch_texel_2d_signed_rgba8888_rev, /* FetchTexel2Df */ + fetch_texel_3d_signed_rgba8888_rev, /* FetchTexel3Df */ + store_texel_signed_rgba8888_rev /* StoreTexel */ +}; + +/*@}*/ + + +/***************************************************************/ +/** \name Hardware formats */ +/*@{*/ + +const struct gl_texture_format _mesa_texformat_rgba8888 = { + MESA_FORMAT_RGBA8888, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_rgba8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgba8888, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba8888, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba8888, /* FetchTexel3Df */ + store_texel_rgba8888 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgba8888_rev = { + MESA_FORMAT_RGBA8888_REV, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_rgba8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgba8888_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba8888_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba8888_rev, /* FetchTexel3Df */ + store_texel_rgba8888_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb8888 = { + MESA_FORMAT_ARGB8888, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_argb8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb8888, /* FetchTexel1Df */ + fetch_texel_2d_f_argb8888, /* FetchTexel2Df */ + fetch_texel_3d_f_argb8888, /* FetchTexel3Df */ + store_texel_argb8888 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb8888_rev = { + MESA_FORMAT_ARGB8888_REV, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_argb8888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb8888_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_argb8888_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_argb8888_rev, /* FetchTexel3Df */ + store_texel_argb8888_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb888 = { + MESA_FORMAT_RGB888, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3, /* TexelBytes */ + _mesa_texstore_rgb888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgb888, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb888, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb888, /* FetchTexel3Df */ + store_texel_rgb888 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_bgr888 = { + MESA_FORMAT_BGR888, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 8, /* RedBits */ + 8, /* GreenBits */ + 8, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 3, /* TexelBytes */ + _mesa_texstore_bgr888, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_bgr888, /* FetchTexel1Df */ + fetch_texel_2d_f_bgr888, /* FetchTexel2Df */ + fetch_texel_3d_f_bgr888, /* FetchTexel3Df */ + store_texel_bgr888 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb565 = { + MESA_FORMAT_RGB565, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 5, /* RedBits */ + 6, /* GreenBits */ + 5, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_rgb565, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgb565, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb565, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb565, /* FetchTexel3Df */ + store_texel_rgb565 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb565_rev = { + MESA_FORMAT_RGB565_REV, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 5, /* RedBits */ + 6, /* GreenBits */ + 5, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_rgb565, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgb565_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb565_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb565_rev, /* FetchTexel3Df */ + store_texel_rgb565_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgba4444 = { + MESA_FORMAT_RGBA4444, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /* RedBits */ + 4, /* GreenBits */ + 4, /* BlueBits */ + 4, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_rgba4444, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgba4444, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba4444, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba4444, /* FetchTexel3Df */ + store_texel_rgba4444 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb4444 = { + MESA_FORMAT_ARGB4444, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /* RedBits */ + 4, /* GreenBits */ + 4, /* BlueBits */ + 4, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_argb4444, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb4444, /* FetchTexel1Df */ + fetch_texel_2d_f_argb4444, /* FetchTexel2Df */ + fetch_texel_3d_f_argb4444, /* FetchTexel3Df */ + store_texel_argb4444 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb4444_rev = { + MESA_FORMAT_ARGB4444_REV, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /* RedBits */ + 4, /* GreenBits */ + 4, /* BlueBits */ + 4, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_argb4444, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb4444_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_argb4444_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_argb4444_rev, /* FetchTexel3Df */ + store_texel_argb4444_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgba5551 = { + MESA_FORMAT_RGBA5551, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 5, /* RedBits */ + 5, /* GreenBits */ + 5, /* BlueBits */ + 1, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_rgba5551, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgba5551, /* FetchTexel1Df */ + fetch_texel_2d_f_rgba5551, /* FetchTexel2Df */ + fetch_texel_3d_f_rgba5551, /* FetchTexel3Df */ + store_texel_rgba5551 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb1555 = { + MESA_FORMAT_ARGB1555, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 5, /* RedBits */ + 5, /* GreenBits */ + 5, /* BlueBits */ + 1, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_argb1555, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb1555, /* FetchTexel1Df */ + fetch_texel_2d_f_argb1555, /* FetchTexel2Df */ + fetch_texel_3d_f_argb1555, /* FetchTexel3Df */ + store_texel_argb1555 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_argb1555_rev = { + MESA_FORMAT_ARGB1555_REV, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 5, /* RedBits */ + 5, /* GreenBits */ + 5, /* BlueBits */ + 1, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_argb1555, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_argb1555_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_argb1555_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_argb1555_rev, /* FetchTexel3Df */ + store_texel_argb1555_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_al88 = { + MESA_FORMAT_AL88, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8, /* AlphaBits */ + 8, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_al88, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_al88, /* FetchTexel1Df */ + fetch_texel_2d_f_al88, /* FetchTexel2Df */ + fetch_texel_3d_f_al88, /* FetchTexel3Df */ + store_texel_al88 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_al88_rev = { + MESA_FORMAT_AL88_REV, /* MesaFormat */ + GL_LUMINANCE_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8, /* AlphaBits */ + 8, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_al88, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_al88_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_al88_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_al88_rev, /* FetchTexel3Df */ + store_texel_al88_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_rgb332 = { + MESA_FORMAT_RGB332, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 3, /* RedBits */ + 3, /* GreenBits */ + 2, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_rgb332, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_rgb332, /* FetchTexel1Df */ + fetch_texel_2d_f_rgb332, /* FetchTexel2Df */ + fetch_texel_3d_f_rgb332, /* FetchTexel3Df */ + store_texel_rgb332 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_a8 = { + MESA_FORMAT_A8, /* MesaFormat */ + GL_ALPHA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 8, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_a8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_a8, /* FetchTexel1Df */ + fetch_texel_2d_f_a8, /* FetchTexel2Df */ + fetch_texel_3d_f_a8, /* FetchTexel3Df */ + store_texel_a8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_l8 = { + MESA_FORMAT_L8, /* MesaFormat */ + GL_LUMINANCE, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 8, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_l8, /* FetchTexel1Df */ + fetch_texel_2d_f_l8, /* FetchTexel2Df */ + fetch_texel_3d_f_l8, /* FetchTexel3Df */ + store_texel_l8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_i8 = { + MESA_FORMAT_I8, /* MesaFormat */ + GL_INTENSITY, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 8, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_i8, /* FetchTexel1Df */ + fetch_texel_2d_f_i8, /* FetchTexel2Df */ + fetch_texel_3d_f_i8, /* FetchTexel3Df */ + store_texel_i8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_ci8 = { + MESA_FORMAT_CI8, /* MesaFormat */ + GL_COLOR_INDEX, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 8, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 1, /* TexelBytes */ + _mesa_texstore_ci8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_ci8, /* FetchTexel1Df */ + fetch_texel_2d_f_ci8, /* FetchTexel2Df */ + fetch_texel_3d_f_ci8, /* FetchTexel3Df */ + store_texel_ci8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_ycbcr = { + MESA_FORMAT_YCBCR, /* MesaFormat */ + GL_YCBCR_MESA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_ycbcr, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_ycbcr, /* FetchTexel1Df */ + fetch_texel_2d_f_ycbcr, /* FetchTexel2Df */ + fetch_texel_3d_f_ycbcr, /* FetchTexel3Df */ + store_texel_ycbcr /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_ycbcr_rev = { + MESA_FORMAT_YCBCR_REV, /* MesaFormat */ + GL_YCBCR_MESA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 2, /* TexelBytes */ + _mesa_texstore_ycbcr, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_ycbcr_rev, /* FetchTexel1Df */ + fetch_texel_2d_f_ycbcr_rev, /* FetchTexel2Df */ + fetch_texel_3d_f_ycbcr_rev, /* FetchTexel3Df */ + store_texel_ycbcr_rev /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_z24_s8 = { + MESA_FORMAT_Z24_S8, /* MesaFormat */ + GL_DEPTH_STENCIL_EXT, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 24, /* DepthBits */ + 8, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_z24_s8, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_z24_s8, /* FetchTexel1Df */ + fetch_texel_2d_f_z24_s8, /* FetchTexel2Df */ + fetch_texel_3d_f_z24_s8, /* FetchTexel3Df */ + store_texel_z24_s8 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_s8_z24 = { + MESA_FORMAT_S8_Z24, /* MesaFormat */ + GL_DEPTH_STENCIL_EXT, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 24, /* DepthBits */ + 8, /* StencilBits */ + 4, /* TexelBytes */ + _mesa_texstore_s8_z24, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel2D */ + NULL, /* FetchTexel3D */ + fetch_texel_1d_f_s8_z24, /* FetchTexel1Df */ + fetch_texel_2d_f_s8_z24, /* FetchTexel2Df */ + fetch_texel_3d_f_s8_z24, /* FetchTexel3Df */ + store_texel_s8_z24 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_z16 = { + MESA_FORMAT_Z16, /* MesaFormat */ + GL_DEPTH_COMPONENT, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + sizeof(GLushort) * 8, /* DepthBits */ + 0, /* StencilBits */ + sizeof(GLushort), /* TexelBytes */ + _mesa_texstore_z16, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_z16, /* FetchTexel1Df */ + fetch_texel_2d_f_z16, /* FetchTexel2Df */ + fetch_texel_3d_f_z16, /* FetchTexel3Df */ + store_texel_z16 /* StoreTexel */ +}; + +const struct gl_texture_format _mesa_texformat_z32 = { + MESA_FORMAT_Z32, /* MesaFormat */ + GL_DEPTH_COMPONENT, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + sizeof(GLuint) * 8, /* DepthBits */ + 0, /* StencilBits */ + sizeof(GLuint), /* TexelBytes */ + _mesa_texstore_z32, /* StoreTexImageFunc */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + NULL, /* FetchTexel1D */ + fetch_texel_1d_f_z32, /* FetchTexel1Df */ + fetch_texel_2d_f_z32, /* FetchTexel2Df */ + fetch_texel_3d_f_z32, /* FetchTexel3Df */ + store_texel_z32 /* StoreTexel */ +}; + +/*@}*/ + + +/***************************************************************/ +/** \name Null format (useful for proxy textures) */ +/*@{*/ + +const struct gl_texture_format _mesa_null_texformat = { + -1, /* MesaFormat */ + 0, /* BaseFormat */ + GL_NONE, /* DataType */ + 0, /* RedBits */ + 0, /* GreenBits */ + 0, /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* StencilBits */ + 0, /* TexelBytes */ + NULL, /* StoreTexImageFunc */ + fetch_null_texel, /* FetchTexel1D */ + fetch_null_texel, /* FetchTexel2D */ + fetch_null_texel, /* FetchTexel3D */ + fetch_null_texelf, /* FetchTexel1Df */ + fetch_null_texelf, /* FetchTexel2Df */ + fetch_null_texelf, /* FetchTexel3Df */ + store_null_texel /* StoreTexel */ +}; + +/*@}*/ + + +/** + * Choose an appropriate texture format given the format, type and + * internalFormat parameters passed to glTexImage(). + * + * \param ctx the GL context. + * \param internalFormat user's prefered internal texture format. + * \param format incoming image pixel format. + * \param type incoming image data type. + * + * \return a pointer to a gl_texture_format object which describes the + * choosen texture format, or NULL on failure. + * + * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers + * will typically override this function with a specialized version. + */ +const struct gl_texture_format * +_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat, + GLenum format, GLenum type ) +{ + (void) format; + (void) type; + + switch (internalFormat) { + /* RGBA formats */ + case 4: + case GL_RGBA: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return &_mesa_texformat_rgba; + case GL_RGBA8: + return &_mesa_texformat_rgba8888; + case GL_RGB5_A1: + return &_mesa_texformat_argb1555; + case GL_RGBA2: + return &_mesa_texformat_argb4444_rev; /* just to test another format*/ + case GL_RGBA4: + return &_mesa_texformat_argb4444; + + /* RGB formats */ + case 3: + case GL_RGB: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return &_mesa_texformat_rgb; + case GL_RGB8: + return &_mesa_texformat_rgb888; + case GL_R3_G3_B2: + return &_mesa_texformat_rgb332; + case GL_RGB4: + return &_mesa_texformat_rgb565_rev; /* just to test another format */ + case GL_RGB5: + return &_mesa_texformat_rgb565; + + /* Alpha formats */ + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA12: + case GL_ALPHA16: + return &_mesa_texformat_alpha; + case GL_ALPHA8: + return &_mesa_texformat_a8; + + /* Luminance formats */ + case 1: + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return &_mesa_texformat_luminance; + case GL_LUMINANCE8: + return &_mesa_texformat_l8; + + /* Luminance/Alpha formats */ + case 2: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return &_mesa_texformat_luminance_alpha; + case GL_LUMINANCE8_ALPHA8: + return &_mesa_texformat_al88; + + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY12: + case GL_INTENSITY16: + return &_mesa_texformat_intensity; + case GL_INTENSITY8: + return &_mesa_texformat_i8; + + case GL_COLOR_INDEX: + case GL_COLOR_INDEX1_EXT: + case GL_COLOR_INDEX2_EXT: + case GL_COLOR_INDEX4_EXT: + case GL_COLOR_INDEX12_EXT: + case GL_COLOR_INDEX16_EXT: + case GL_COLOR_INDEX8_EXT: + return &_mesa_texformat_ci8; + + default: + ; /* fallthrough */ + } + + if (ctx->Extensions.ARB_depth_texture) { + switch (internalFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return &_mesa_texformat_z32; + case GL_DEPTH_COMPONENT16: + return &_mesa_texformat_z16; + default: + ; /* fallthrough */ + } + } + + switch (internalFormat) { + case GL_COMPRESSED_ALPHA_ARB: + return &_mesa_texformat_alpha; + case GL_COMPRESSED_LUMINANCE_ARB: + return &_mesa_texformat_luminance; + case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: + return &_mesa_texformat_luminance_alpha; + case GL_COMPRESSED_INTENSITY_ARB: + return &_mesa_texformat_intensity; + case GL_COMPRESSED_RGB_ARB: +#if FEATURE_texture_fxt1 + if (ctx->Extensions.TDFX_texture_compression_FXT1) + return &_mesa_texformat_rgb_fxt1; +#endif +#if FEATURE_texture_s3tc + if (ctx->Extensions.EXT_texture_compression_s3tc || + ctx->Extensions.S3_s3tc) + return &_mesa_texformat_rgb_dxt1; +#endif + return &_mesa_texformat_rgb; + case GL_COMPRESSED_RGBA_ARB: +#if FEATURE_texture_fxt1 + if (ctx->Extensions.TDFX_texture_compression_FXT1) + return &_mesa_texformat_rgba_fxt1; +#endif +#if FEATURE_texture_s3tc + if (ctx->Extensions.EXT_texture_compression_s3tc || + ctx->Extensions.S3_s3tc) + return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */ +#endif + return &_mesa_texformat_rgba; + default: + ; /* fallthrough */ + } + + if (ctx->Extensions.MESA_ycbcr_texture) { + if (internalFormat == GL_YCBCR_MESA) { + if (type == GL_UNSIGNED_SHORT_8_8_MESA) + return &_mesa_texformat_ycbcr; + else + return &_mesa_texformat_ycbcr_rev; + } + } + +#if FEATURE_texture_fxt1 + if (ctx->Extensions.TDFX_texture_compression_FXT1) { + switch (internalFormat) { + case GL_COMPRESSED_RGB_FXT1_3DFX: + return &_mesa_texformat_rgb_fxt1; + case GL_COMPRESSED_RGBA_FXT1_3DFX: + return &_mesa_texformat_rgba_fxt1; + default: + ; /* fallthrough */ + } + } +#endif + +#if FEATURE_texture_s3tc + if (ctx->Extensions.EXT_texture_compression_s3tc) { + switch (internalFormat) { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + return &_mesa_texformat_rgb_dxt1; + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + return &_mesa_texformat_rgba_dxt1; + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + return &_mesa_texformat_rgba_dxt3; + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + return &_mesa_texformat_rgba_dxt5; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.S3_s3tc) { + switch (internalFormat) { + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + return &_mesa_texformat_rgb_dxt1; + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + return &_mesa_texformat_rgba_dxt3; + default: + ; /* fallthrough */ + } + } +#endif + + if (ctx->Extensions.ARB_texture_float) { + switch (internalFormat) { + case GL_ALPHA16F_ARB: + return &_mesa_texformat_alpha_float16; + case GL_ALPHA32F_ARB: + return &_mesa_texformat_alpha_float32; + case GL_LUMINANCE16F_ARB: + return &_mesa_texformat_luminance_float16; + case GL_LUMINANCE32F_ARB: + return &_mesa_texformat_luminance_float32; + case GL_LUMINANCE_ALPHA16F_ARB: + return &_mesa_texformat_luminance_alpha_float16; + case GL_LUMINANCE_ALPHA32F_ARB: + return &_mesa_texformat_luminance_alpha_float32; + case GL_INTENSITY16F_ARB: + return &_mesa_texformat_intensity_float16; + case GL_INTENSITY32F_ARB: + return &_mesa_texformat_intensity_float32; + case GL_RGB16F_ARB: + return &_mesa_texformat_rgb_float16; + case GL_RGB32F_ARB: + return &_mesa_texformat_rgb_float32; + case GL_RGBA16F_ARB: + return &_mesa_texformat_rgba_float16; + case GL_RGBA32F_ARB: + return &_mesa_texformat_rgba_float32; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.EXT_packed_depth_stencil) { + switch (internalFormat) { + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + return &_mesa_texformat_z24_s8; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.ATI_envmap_bumpmap) { + switch (internalFormat) { + case GL_DUDV_ATI: + case GL_DU8DV8_ATI: + return &_mesa_texformat_dudv8; + default: + ; /* fallthrough */ + } + } + + if (ctx->Extensions.MESA_texture_signed_rgba) { + switch (internalFormat) { + case GL_RGBA_SNORM: + case GL_RGBA8_SNORM: + return &_mesa_texformat_signed_rgba8888; + default: + ; /* fallthrough */ + } + } + + +#if FEATURE_EXT_texture_sRGB + if (ctx->Extensions.EXT_texture_sRGB) { + switch (internalFormat) { + case GL_SRGB_EXT: + case GL_SRGB8_EXT: + return &_mesa_texformat_srgb8; + case GL_SRGB_ALPHA_EXT: + case GL_SRGB8_ALPHA8_EXT: + return &_mesa_texformat_srgba8; + case GL_SLUMINANCE_EXT: + case GL_SLUMINANCE8_EXT: + return &_mesa_texformat_sl8; + case GL_SLUMINANCE_ALPHA_EXT: + case GL_SLUMINANCE8_ALPHA8_EXT: + return &_mesa_texformat_sla8; + case GL_COMPRESSED_SLUMINANCE_EXT: + return &_mesa_texformat_sl8; + case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: + return &_mesa_texformat_sla8; + case GL_COMPRESSED_SRGB_EXT: +#if FEATURE_texture_s3tc + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgb_dxt1; +#endif + return &_mesa_texformat_srgb8; + case GL_COMPRESSED_SRGB_ALPHA_EXT: +#if FEATURE_texture_s3tc + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgba_dxt3; /* Not srgba_dxt1, see spec */ +#endif + return &_mesa_texformat_srgba8; +#if FEATURE_texture_s3tc + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgb_dxt1; + break; + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgba_dxt1; + break; + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgba_dxt3; + break; + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + if (ctx->Extensions.EXT_texture_compression_s3tc) + return &_mesa_texformat_srgba_dxt5; + break; +#endif + default: + ; /* fallthrough */ + } + } +#endif /* FEATURE_EXT_texture_sRGB */ + + _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()"); + return NULL; +} + + + +/** + * Return datatype and number of components per texel for the + * given gl_texture_format. + */ +void +_mesa_format_to_type_and_comps(const struct gl_texture_format *format, + GLenum *datatype, GLuint *comps) +{ + switch (format->MesaFormat) { + case MESA_FORMAT_RGBA8888: + case MESA_FORMAT_RGBA8888_REV: + case MESA_FORMAT_ARGB8888: + case MESA_FORMAT_ARGB8888_REV: + *datatype = CHAN_TYPE; + *comps = 4; + return; + case MESA_FORMAT_RGB888: + case MESA_FORMAT_BGR888: + *datatype = GL_UNSIGNED_BYTE; + *comps = 3; + return; + case MESA_FORMAT_RGB565: + case MESA_FORMAT_RGB565_REV: + *datatype = GL_UNSIGNED_SHORT_5_6_5; + *comps = 3; + return; + + case MESA_FORMAT_ARGB4444: + case MESA_FORMAT_ARGB4444_REV: + *datatype = GL_UNSIGNED_SHORT_4_4_4_4; + *comps = 4; + return; + + case MESA_FORMAT_ARGB1555: + case MESA_FORMAT_ARGB1555_REV: + *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV; + *comps = 4; + return; + + case MESA_FORMAT_AL88: + case MESA_FORMAT_AL88_REV: + *datatype = GL_UNSIGNED_BYTE; + *comps = 2; + return; + case MESA_FORMAT_RGB332: + *datatype = GL_UNSIGNED_BYTE_3_3_2; + *comps = 3; + return; + + case MESA_FORMAT_A8: + case MESA_FORMAT_L8: + case MESA_FORMAT_I8: + case MESA_FORMAT_CI8: + *datatype = GL_UNSIGNED_BYTE; + *comps = 1; + return; + + case MESA_FORMAT_YCBCR: + case MESA_FORMAT_YCBCR_REV: + *datatype = GL_UNSIGNED_SHORT; + *comps = 2; + return; + + case MESA_FORMAT_Z24_S8: + *datatype = GL_UNSIGNED_INT; + *comps = 1; /* XXX OK? */ + return; + + case MESA_FORMAT_S8_Z24: + *datatype = GL_UNSIGNED_INT; + *comps = 1; /* XXX OK? */ + return; + + case MESA_FORMAT_Z16: + *datatype = GL_UNSIGNED_SHORT; + *comps = 1; + return; + + case MESA_FORMAT_Z32: + *datatype = GL_UNSIGNED_INT; + *comps = 1; + return; + + case MESA_FORMAT_DUDV8: + *datatype = GL_BYTE; + *comps = 2; + return; + + case MESA_FORMAT_SIGNED_RGBA8888: + case MESA_FORMAT_SIGNED_RGBA8888_REV: + *datatype = GL_BYTE; + *comps = 4; + return; + +#if FEATURE_EXT_texture_sRGB + case MESA_FORMAT_SRGB8: + *datatype = GL_UNSIGNED_BYTE; + *comps = 3; + return; + case MESA_FORMAT_SRGBA8: + case MESA_FORMAT_SARGB8: + *datatype = GL_UNSIGNED_BYTE; + *comps = 4; + return; + case MESA_FORMAT_SL8: + *datatype = GL_UNSIGNED_BYTE; + *comps = 1; + return; + case MESA_FORMAT_SLA8: + *datatype = GL_UNSIGNED_BYTE; + *comps = 2; + return; +#endif + +#if FEATURE_texture_fxt1 + case MESA_FORMAT_RGB_FXT1: + case MESA_FORMAT_RGBA_FXT1: +#endif +#if FEATURE_texture_s3tc + case MESA_FORMAT_RGB_DXT1: + case MESA_FORMAT_RGBA_DXT1: + case MESA_FORMAT_RGBA_DXT3: + case MESA_FORMAT_RGBA_DXT5: +#if FEATURE_EXT_texture_sRGB + case MESA_FORMAT_SRGB_DXT1: + case MESA_FORMAT_SRGBA_DXT1: + case MESA_FORMAT_SRGBA_DXT3: + case MESA_FORMAT_SRGBA_DXT5: +#endif + /* XXX generate error instead? */ + *datatype = GL_UNSIGNED_BYTE; + *comps = 0; + return; +#endif + + case MESA_FORMAT_RGBA: + *datatype = CHAN_TYPE; + *comps = 4; + return; + case MESA_FORMAT_RGB: + *datatype = CHAN_TYPE; + *comps = 3; + return; + case MESA_FORMAT_LUMINANCE_ALPHA: + *datatype = CHAN_TYPE; + *comps = 2; + return; + case MESA_FORMAT_ALPHA: + case MESA_FORMAT_LUMINANCE: + case MESA_FORMAT_INTENSITY: + *datatype = CHAN_TYPE; + *comps = 1; + return; + + case MESA_FORMAT_RGBA_FLOAT32: + *datatype = GL_FLOAT; + *comps = 4; + return; + case MESA_FORMAT_RGBA_FLOAT16: + *datatype = GL_HALF_FLOAT_ARB; + *comps = 4; + return; + case MESA_FORMAT_RGB_FLOAT32: + *datatype = GL_FLOAT; + *comps = 3; + return; + case MESA_FORMAT_RGB_FLOAT16: + *datatype = GL_HALF_FLOAT_ARB; + *comps = 3; + return; + case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32: + *datatype = GL_FLOAT; + *comps = 2; + return; + case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16: + *datatype = GL_HALF_FLOAT_ARB; + *comps = 2; + return; + case MESA_FORMAT_ALPHA_FLOAT32: + case MESA_FORMAT_LUMINANCE_FLOAT32: + case MESA_FORMAT_INTENSITY_FLOAT32: + *datatype = GL_FLOAT; + *comps = 1; + return; + case MESA_FORMAT_ALPHA_FLOAT16: + case MESA_FORMAT_LUMINANCE_FLOAT16: + case MESA_FORMAT_INTENSITY_FLOAT16: + *datatype = GL_HALF_FLOAT_ARB; + *comps = 1; + return; + + default: + _mesa_problem(NULL, "bad format in _mesa_format_to_type_and_comps"); + *datatype = 0; + *comps = 1; + } +} |