+++ /dev/null
-/*
- * 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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