/*
* Mesa 3-D graphics library
- * Version: 6.5.1
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (c) 2008-2009 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.h
- * Texture formats definitions.
- *
- * \author Gareth Hughes
- */
-
-
#ifndef TEXFORMAT_H
#define TEXFORMAT_H
-#include "mtypes.h"
-
-
-/**
- * Mesa internal texture image formats.
- * All texture images are stored in one of these formats.
- *
- * NOTE: when you add a new format, be sure to update the do_row()
- * function in texstore.c used for auto mipmap generation.
- */
-enum _format {
- /**
- * \name Hardware-friendly formats.
- *
- * Drivers can override the default formats and convert texture images to
- * one of these as required. The driver's
- * dd_function_table::ChooseTextureFormat function will choose one of these
- * formats.
- *
- * \note In the default case, some of these formats will be duplicates of
- * the generic formats listed below. However, these formats guarantee their
- * internal component sizes, while GLchan may vary between GLubyte, GLushort
- * and GLfloat.
- */
- /*@{*/
- /* msb <------ TEXEL BITS -----------> lsb */
- /* ---- ---- ---- ---- ---- ---- ---- ---- */
- MESA_FORMAT_RGBA8888, /* RRRR RRRR GGGG GGGG BBBB BBBB AAAA AAAA */
- MESA_FORMAT_RGBA8888_REV, /* AAAA AAAA BBBB BBBB GGGG GGGG RRRR RRRR */
- MESA_FORMAT_ARGB8888, /* AAAA AAAA RRRR RRRR GGGG GGGG BBBB BBBB */
- MESA_FORMAT_ARGB8888_REV, /* BBBB BBBB GGGG GGGG RRRR RRRR AAAA AAAA */
- MESA_FORMAT_RGB888, /* RRRR RRRR GGGG GGGG BBBB BBBB */
- MESA_FORMAT_BGR888, /* BBBB BBBB GGGG GGGG RRRR RRRR */
- MESA_FORMAT_RGB565, /* RRRR RGGG GGGB BBBB */
- MESA_FORMAT_RGB565_REV, /* GGGB BBBB RRRR RGGG */
- MESA_FORMAT_ARGB4444, /* AAAA RRRR GGGG BBBB */
- MESA_FORMAT_ARGB4444_REV, /* GGGG BBBB AAAA RRRR */
- MESA_FORMAT_ARGB1555, /* ARRR RRGG GGGB BBBB */
- MESA_FORMAT_ARGB1555_REV, /* GGGB BBBB ARRR RRGG */
- MESA_FORMAT_AL88, /* AAAA AAAA LLLL LLLL */
- MESA_FORMAT_AL88_REV, /* LLLL LLLL AAAA AAAA */
- MESA_FORMAT_RGB332, /* RRRG GGBB */
- MESA_FORMAT_A8, /* AAAA AAAA */
- MESA_FORMAT_L8, /* LLLL LLLL */
- MESA_FORMAT_I8, /* IIII IIII */
- MESA_FORMAT_CI8, /* CCCC CCCC */
- MESA_FORMAT_YCBCR, /* YYYY YYYY UorV UorV */
- MESA_FORMAT_YCBCR_REV, /* UorV UorV YYYY YYYY */
- MESA_FORMAT_Z24_S8, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ SSSS SSSS */
- MESA_FORMAT_S8_Z24, /* SSSS SSSS ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
- MESA_FORMAT_Z16, /* ZZZZ ZZZZ ZZZZ ZZZZ */
- MESA_FORMAT_Z32, /* ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ ZZZZ */
- /*@}*/
-
-#if FEATURE_EXT_texture_sRGB
- /**
- * \name 8-bit/channel sRGB formats
- */
- /*@{*/
- MESA_FORMAT_SRGB8,
- MESA_FORMAT_SRGBA8,
- MESA_FORMAT_SL8,
- MESA_FORMAT_SLA8,
- MESA_FORMAT_SRGB_DXT1,
- /*@}*/
-#endif
-
- /**
- * \name Compressed texture formats.
- */
- /*@{*/
-#if FEATURE_texture_fxt1
- MESA_FORMAT_RGB_FXT1,
- MESA_FORMAT_RGBA_FXT1,
-#endif
-#if FEATURE_texture_s3tc
- MESA_FORMAT_RGB_DXT1,
- MESA_FORMAT_RGBA_DXT1,
- MESA_FORMAT_RGBA_DXT3,
- MESA_FORMAT_RGBA_DXT5,
-#endif
- /*@}*/
-
- /**
- * \name Generic GLchan-based formats.
- *
- * Software-oriented texture formats. Texels are arrays of GLchan
- * values so there are no byte order issues.
- *
- * \note Because these are based on the GLchan data type, one cannot assume
- * 8 bits per channel with these formats. If you require GLubyte channels,
- * use one of the hardware formats above.
- */
- /*@{*/
- MESA_FORMAT_RGBA,
- MESA_FORMAT_RGB,
- MESA_FORMAT_ALPHA,
- MESA_FORMAT_LUMINANCE,
- MESA_FORMAT_LUMINANCE_ALPHA,
- MESA_FORMAT_INTENSITY,
- /*@}*/
-
- /**
- * \name Floating point texture formats.
- */
- /*@{*/
- MESA_FORMAT_RGBA_FLOAT32,
- MESA_FORMAT_RGBA_FLOAT16,
- MESA_FORMAT_RGB_FLOAT32,
- MESA_FORMAT_RGB_FLOAT16,
- MESA_FORMAT_ALPHA_FLOAT32,
- MESA_FORMAT_ALPHA_FLOAT16,
- MESA_FORMAT_LUMINANCE_FLOAT32,
- MESA_FORMAT_LUMINANCE_FLOAT16,
- MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
- MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
- MESA_FORMAT_INTENSITY_FLOAT32,
- MESA_FORMAT_INTENSITY_FLOAT16
- /*@}*/
-};
-
-
-/** GLchan-valued formats */
-/*@{*/
-extern const struct gl_texture_format _mesa_texformat_rgba;
-extern const struct gl_texture_format _mesa_texformat_rgb;
-extern const struct gl_texture_format _mesa_texformat_alpha;
-extern const struct gl_texture_format _mesa_texformat_luminance;
-extern const struct gl_texture_format _mesa_texformat_luminance_alpha;
-extern const struct gl_texture_format _mesa_texformat_intensity;
-/*@}*/
-
-#if FEATURE_EXT_texture_sRGB
-/** sRGB (nonlinear) formats */
-/*@{*/
-extern const struct gl_texture_format _mesa_texformat_srgb8;
-extern const struct gl_texture_format _mesa_texformat_srgba8;
-extern const struct gl_texture_format _mesa_texformat_sl8;
-extern const struct gl_texture_format _mesa_texformat_sla8;
-extern const struct gl_texture_format _mesa_texformat_srgb_dxt1;
-/*@}*/
-#endif
-
-/** Floating point texture formats */
-/*@{*/
-extern const struct gl_texture_format _mesa_texformat_rgba_float32;
-extern const struct gl_texture_format _mesa_texformat_rgba_float16;
-extern const struct gl_texture_format _mesa_texformat_rgb_float32;
-extern const struct gl_texture_format _mesa_texformat_rgb_float16;
-extern const struct gl_texture_format _mesa_texformat_alpha_float32;
-extern const struct gl_texture_format _mesa_texformat_alpha_float16;
-extern const struct gl_texture_format _mesa_texformat_luminance_float32;
-extern const struct gl_texture_format _mesa_texformat_luminance_float16;
-extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float32;
-extern const struct gl_texture_format _mesa_texformat_luminance_alpha_float16;
-extern const struct gl_texture_format _mesa_texformat_intensity_float32;
-extern const struct gl_texture_format _mesa_texformat_intensity_float16;
-/*@}*/
-
-/** \name Assorted hardware-friendly formats */
-/*@{*/
-extern const struct gl_texture_format _mesa_texformat_rgba8888;
-extern const struct gl_texture_format _mesa_texformat_rgba8888_rev;
-extern const struct gl_texture_format _mesa_texformat_argb8888;
-extern const struct gl_texture_format _mesa_texformat_argb8888_rev;
-extern const struct gl_texture_format _mesa_texformat_rgb888;
-extern const struct gl_texture_format _mesa_texformat_bgr888;
-extern const struct gl_texture_format _mesa_texformat_rgb565;
-extern const struct gl_texture_format _mesa_texformat_rgb565_rev;
-extern const struct gl_texture_format _mesa_texformat_argb4444;
-extern const struct gl_texture_format _mesa_texformat_argb4444_rev;
-extern const struct gl_texture_format _mesa_texformat_argb1555;
-extern const struct gl_texture_format _mesa_texformat_argb1555_rev;
-extern const struct gl_texture_format _mesa_texformat_al88;
-extern const struct gl_texture_format _mesa_texformat_al88_rev;
-extern const struct gl_texture_format _mesa_texformat_rgb332;
-extern const struct gl_texture_format _mesa_texformat_a8;
-extern const struct gl_texture_format _mesa_texformat_l8;
-extern const struct gl_texture_format _mesa_texformat_i8;
-extern const struct gl_texture_format _mesa_texformat_ci8;
-extern const struct gl_texture_format _mesa_texformat_z24_s8;
-extern const struct gl_texture_format _mesa_texformat_s8_z24;
-extern const struct gl_texture_format _mesa_texformat_z16;
-extern const struct gl_texture_format _mesa_texformat_z32;
-/*@}*/
-
-/** \name YCbCr formats */
-/*@{*/
-extern const struct gl_texture_format _mesa_texformat_ycbcr;
-extern const struct gl_texture_format _mesa_texformat_ycbcr_rev;
-/*@}*/
-
-/** \name Compressed formats */
-/*@{*/
-#if FEATURE_texture_fxt1
-extern const struct gl_texture_format _mesa_texformat_rgb_fxt1;
-extern const struct gl_texture_format _mesa_texformat_rgba_fxt1;
-#endif
-#if FEATURE_texture_s3tc
-extern const struct gl_texture_format _mesa_texformat_rgb_dxt1;
-extern const struct gl_texture_format _mesa_texformat_rgba_dxt1;
-extern const struct gl_texture_format _mesa_texformat_rgba_dxt3;
-extern const struct gl_texture_format _mesa_texformat_rgba_dxt5;
-#endif
-/*@}*/
-
-/** \name The null format */
-/*@{*/
-extern const struct gl_texture_format _mesa_null_texformat;
-/*@}*/
-
-
-extern const struct gl_texture_format *
-_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
- GLenum format, GLenum type );
-
+#include "formats.h"
-extern void
-_mesa_format_to_type_and_comps(const struct gl_texture_format *format,
- GLenum *datatype, GLuint *comps);
+struct gl_context;
+extern mesa_format
+_mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
+ GLint internalFormat, GLenum format, GLenum type);
#endif
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