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362 lines
12 KiB
C
362 lines
12 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.7
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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* Copyright (c) 2008-2009 VMware, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file texformat.c
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* Texture formats.
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*
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* \author Gareth Hughes
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* \author Brian Paul
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*/
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#include <precomp.h>
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#define RETURN_IF_SUPPORTED(f) do { \
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if (ctx->TextureFormatSupported[f]) \
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return f; \
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} while (0)
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/**
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* Choose an appropriate texture format given the format, type and
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* internalFormat parameters passed to glTexImage().
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*
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* \param ctx the GL context.
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* \param internalFormat user's prefered internal texture format.
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* \param format incoming image pixel format.
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* \param type incoming image data type.
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*
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* \return a pointer to a gl_texture_format object which describes the
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* choosen texture format, or NULL on failure.
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*
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* This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
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* will typically override this function with a specialized version.
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*/
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gl_format
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_mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
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GLenum format, GLenum type )
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{
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(void) format;
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(void) type;
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switch (internalFormat) {
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/* shallow RGBA formats */
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case 4:
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case GL_RGBA:
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if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
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} else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
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}
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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case GL_RGBA8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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case GL_RGB5_A1:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
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break;
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case GL_RGBA2:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
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break;
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case GL_RGBA4:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
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break;
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/* deep RGBA formats */
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case GL_RGB10_A2:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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case GL_RGBA12:
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case GL_RGBA16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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/* shallow RGB formats */
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case 3:
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case GL_RGB:
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case GL_RGB8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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case GL_R3_G3_B2:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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case GL_RGB4:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
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break;
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case GL_RGB5:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
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break;
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/* deep RGB formats */
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case GL_RGB10:
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case GL_RGB12:
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case GL_RGB16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
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RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
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break;
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/* Alpha formats */
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case GL_ALPHA:
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case GL_ALPHA4:
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case GL_ALPHA8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
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break;
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case GL_ALPHA12:
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case GL_ALPHA16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
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break;
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/* Luminance formats */
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case 1:
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case GL_LUMINANCE:
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case GL_LUMINANCE4:
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case GL_LUMINANCE8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
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break;
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case GL_LUMINANCE12:
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case GL_LUMINANCE16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
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break;
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/* Luminance/Alpha formats */
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case GL_LUMINANCE4_ALPHA4:
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RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
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RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
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break;
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case 2:
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case GL_LUMINANCE_ALPHA:
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case GL_LUMINANCE6_ALPHA2:
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case GL_LUMINANCE8_ALPHA8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
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break;
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case GL_LUMINANCE12_ALPHA4:
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case GL_LUMINANCE12_ALPHA12:
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case GL_LUMINANCE16_ALPHA16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
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RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
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break;
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case GL_INTENSITY:
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case GL_INTENSITY4:
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case GL_INTENSITY8:
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RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
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break;
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case GL_INTENSITY12:
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case GL_INTENSITY16:
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RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
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break;
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default:
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; /* fallthrough */
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}
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if (ctx->Extensions.MESA_ycbcr_texture) {
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if (internalFormat == GL_YCBCR_MESA) {
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if (type == GL_UNSIGNED_SHORT_8_8_MESA)
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RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
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else
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RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
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}
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}
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if (ctx->Extensions.EXT_texture_integer) {
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switch (internalFormat) {
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case GL_ALPHA8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_ALPHA16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_ALPHA32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_ALPHA8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_ALPHA16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_ALPHA32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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case GL_LUMINANCE8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_LUMINANCE16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_LUMINANCE32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_LUMINANCE8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_LUMINANCE16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_LUMINANCE32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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case GL_LUMINANCE_ALPHA8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_LUMINANCE_ALPHA16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_LUMINANCE_ALPHA32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_LUMINANCE_ALPHA8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_LUMINANCE_ALPHA16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_LUMINANCE_ALPHA32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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case GL_INTENSITY8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_INTENSITY16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_INTENSITY32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_INTENSITY8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_INTENSITY16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_INTENSITY32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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}
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}
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if (ctx->VersionMajor >= 3 ||
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ctx->Extensions.EXT_texture_integer) {
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switch (internalFormat) {
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case GL_RGB8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_RGB16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_RGB32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_RGB8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_RGB16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_RGB32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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case GL_RGBA8UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
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break;
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case GL_RGBA16UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
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break;
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case GL_RGBA32UI_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
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break;
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case GL_RGBA8I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
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break;
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case GL_RGBA16I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
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break;
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case GL_RGBA32I_EXT:
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RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
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break;
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}
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}
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_mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
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_mesa_lookup_enum_by_nr(internalFormat));
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return MESA_FORMAT_NONE;
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}
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