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reactos/dll/opengl/mesa/main/texformat.c

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/*
* Mesa 3-D graphics library
* Version: 7.7
*
* 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"),
* 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
* \author Brian Paul
*/
#include <precomp.h>
#define RETURN_IF_SUPPORTED(f) do { \
if (ctx->TextureFormatSupported[f]) \
return f; \
} while (0)
/**
* 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.
*/
gl_format
_mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
GLenum format, GLenum type )
{
(void) format;
(void) type;
switch (internalFormat) {
/* shallow RGBA formats */
case 4:
case GL_RGBA:
if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
} else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
}
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB5_A1:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
break;
case GL_RGBA2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
case GL_RGBA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
/* deep RGBA formats */
case GL_RGB10_A2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA12:
case GL_RGBA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* shallow RGB formats */
case 3:
case GL_RGB:
case GL_RGB8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_R3_G3_B2:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB4:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
case GL_RGB5:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
/* deep RGB formats */
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* Alpha formats */
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
case GL_ALPHA12:
case GL_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
/* Luminance formats */
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
case GL_LUMINANCE12:
case GL_LUMINANCE16:
RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
/* Luminance/Alpha formats */
case GL_LUMINANCE4_ALPHA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_INTENSITY12:
case GL_INTENSITY16:
RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
default:
; /* fallthrough */
}
if (ctx->Extensions.MESA_ycbcr_texture) {
if (internalFormat == GL_YCBCR_MESA) {
if (type == GL_UNSIGNED_SHORT_8_8_MESA)
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
else
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
}
}
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_ALPHA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_ALPHA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_ALPHA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_ALPHA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_ALPHA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_ALPHA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_LUMINANCE8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_LUMINANCE16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_LUMINANCE32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_LUMINANCE8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_LUMINANCE16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_LUMINANCE32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_LUMINANCE_ALPHA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_LUMINANCE_ALPHA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_LUMINANCE_ALPHA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_LUMINANCE_ALPHA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_LUMINANCE_ALPHA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_LUMINANCE_ALPHA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_INTENSITY8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_INTENSITY16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_INTENSITY32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_INTENSITY8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_INTENSITY16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_INTENSITY32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
}
}
if (ctx->VersionMajor >= 3 ||
ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGB8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_RGB16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_RGB32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_RGB8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_RGB16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_RGB32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_RGBA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_RGBA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_RGBA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_RGBA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
case GL_RGBA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_RGBA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
}
}
_mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
_mesa_lookup_enum_by_nr(internalFormat));
return MESA_FORMAT_NONE;
}
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