/* * 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 #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_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.ARB_texture_float) { switch (internalFormat) { case GL_ALPHA16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_ALPHA32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_LUMINANCE16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_LUMINANCE32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_LUMINANCE_ALPHA16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_LUMINANCE_ALPHA32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_INTENSITY16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_INTENSITY32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_RGB16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_RGB32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; case GL_RGBA16F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); break; case GL_RGBA32F_ARB: RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32); RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16); break; default: ; /* fallthrough */ } } 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; }