-/* $Id: texformat.h,v 1.5 2001/03/22 06:26:18 gareth Exp $ */
+/**
+ * \file texformat.h
+ * Texture formats definitions.
+ *
+ * \author Gareth Hughes
+ */
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 5.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* 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.
- *
- * Author:
- * Gareth Hughes <gareth@valinux.com>
*/
+
#ifndef TEXFORMAT_H
#define TEXFORMAT_H
#include "mtypes.h"
-/* The Mesa internal texture image types. These will be set to their
- * default value, but may be changed by drivers as required.
+/**
+ * Mesa internal texture image types.
+ *
+ * All texture images must be stored in one of these formats.
*/
enum _format {
- /* Hardware-friendly formats. Drivers can override the default
- * formats and convert texture images to one of these as required.
- * These formats are all little endian, as shown below. They will be
- * most useful for x86-based PC graphics card drivers.
+ /**
+ * \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. These formats are all little endian, as shown below. They will
+ * be most useful for x86-based PC graphics card drivers.
*
- * NOTE: In the default case, some of these formats will be
- * duplicates of the default formats listed above. However, these
- * formats guarantee their internal component sizes, while GLchan may
- * vary betwen GLubyte, GLushort and GLfloat.
+ * \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_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 */
+ /*@}*/
- /* Generic GLchan-based formats. These are the default formats used
- * by the software rasterizer and, unless the driver overrides the
- * texture image functions, incoming images will be converted to one
- * of these formats. Components are arrays of GLchan values, so
- * there will be no big/little endian issues.
+ MESA_FORMAT_RGB_FXT1,
+ MESA_FORMAT_RGBA_FXT1,
+ MESA_FORMAT_RGB_DXT1,
+ MESA_FORMAT_RGBA_DXT1,
+ MESA_FORMAT_RGBA_DXT3,
+ MESA_FORMAT_RGBA_DXT5,
+
+#if 0
+ /**
+ * \name Upcoming little-endian formats
+ */
+ /*@{*/
+ /* msb <------ TEXEL BITS -----------> lsb */
+ /* ---- ---- ---- ---- ---- ---- ---- ---- */
+ MESA_FORMAT_ABGR8888, /* AAAA AAAA BBBB BBBB GGGG GGGG RRRR RRRR */
+ MESA_FORMAT_BGRA8888, /* BBBB BBBB GGGG GGGG RRRR RRRR AAAA AAAA */
+ MESA_FORMAT_BGR888, /* BBBB BBBB GGGG GGGG RRRR RRRR */
+ MESA_FORMAT_BGR565, /* BBBB BGGG GGGR RRRR */
+ MESA_FORMAT_BGRA4444, /* BBBB GGGG RRRR AAAA */
+ MESA_FORMAT_BGRA5551, /* BBBB BGGG GGRR RRRA */
+ MESA_FORMAT_LA88, /* LLLL LLLL AAAA AAAA */
+ MESA_FORMAT_BGR233, /* BBGG GRRR */
+ /*@}*/
+#endif
+
+ /**
+ * \name Generic GLchan-based formats.
*
- * NOTE: Because these are based on the GLchan datatype, one cannot
- * assume 8 bits per channel with these formats. If you require
- * GLubyte per channel, use one of the hardware formats below.
+ * These are the default formats used by the software rasterizer and, unless
+ * the driver overrides the texture image functions, incoming images will be
+ * converted to one of these formats. Components are arrays of GLchan
+ * values, so there will be no big/little endian 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_INTENSITY,
MESA_FORMAT_COLOR_INDEX,
MESA_FORMAT_DEPTH_COMPONENT
+ /*@}*/
};
-extern void
-_mesa_init_tex_format( GLcontext *ctx, GLenum internalFormat,
- struct gl_texture_image *texImage );
+extern GLboolean
+_mesa_is_hardware_tex_format( const struct gl_texture_format *format );
+extern const struct gl_texture_format *
+_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
+ GLenum format, GLenum type );
-/* The default formats, GLchan per component:
- */
+extern GLint
+_mesa_base_compressed_texformat(GLcontext *ctx, GLint intFormat);
+
+
+/** The default formats, GLchan per component */
+/*@{*/
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_intensity;
extern const struct gl_texture_format _mesa_texformat_color_index;
extern const struct gl_texture_format _mesa_texformat_depth_component;
+/*@}*/
-/* The hardware-friendly formats:
- */
+/** \name The hardware-friendly formats */
+/*@{*/
extern const struct gl_texture_format _mesa_texformat_rgba8888;
extern const struct gl_texture_format _mesa_texformat_argb8888;
extern const struct gl_texture_format _mesa_texformat_rgb888;
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_ycbcr;
+extern const struct gl_texture_format _mesa_texformat_ycbcr_rev;
+extern const struct gl_texture_format _mesa_texformat_rgb_fxt1;
+extern const struct gl_texture_format _mesa_texformat_rgba_fxt1;
+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;
+/*@}*/
-/* The null format:
- */
+/** \name The null format */
+/*@{*/
extern const struct gl_texture_format _mesa_null_texformat;
+/*@}*/
#endif
projects / mesa.git / blobdiff