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Diffstat (limited to 'src/mesa/main/glformats.c')
| -rw-r--r-- | src/mesa/main/glformats.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c new file mode 100644 index 00000000000..5b5008ed6cc --- /dev/null +++ b/src/mesa/main/glformats.c @@ -0,0 +1,201 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (c) 2008-2009 VMware, Inc. + * Copyright (c) 2012 Intel Corporation + * + * 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 + * THE AUTHORS 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. + */ + + +#include "imports.h" +#include "glformats.h" + + +/** + * Test if the given format is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_enum_format_integer(GLenum format) +{ + switch (format) { + /* generic integer formats */ + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RGB_INTEGER_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: + /* specific integer formats */ + case GL_RGBA32UI_EXT: + case GL_RGB32UI_EXT: + case GL_RG32UI: + case GL_R32UI: + case GL_ALPHA32UI_EXT: + case GL_INTENSITY32UI_EXT: + case GL_LUMINANCE32UI_EXT: + case GL_LUMINANCE_ALPHA32UI_EXT: + case GL_RGBA16UI_EXT: + case GL_RGB16UI_EXT: + case GL_RG16UI: + case GL_R16UI: + case GL_ALPHA16UI_EXT: + case GL_INTENSITY16UI_EXT: + case GL_LUMINANCE16UI_EXT: + case GL_LUMINANCE_ALPHA16UI_EXT: + case GL_RGBA8UI_EXT: + case GL_RGB8UI_EXT: + case GL_RG8UI: + case GL_R8UI: + case GL_ALPHA8UI_EXT: + case GL_INTENSITY8UI_EXT: + case GL_LUMINANCE8UI_EXT: + case GL_LUMINANCE_ALPHA8UI_EXT: + case GL_RGBA32I_EXT: + case GL_RGB32I_EXT: + case GL_RG32I: + case GL_R32I: + case GL_ALPHA32I_EXT: + case GL_INTENSITY32I_EXT: + case GL_LUMINANCE32I_EXT: + case GL_LUMINANCE_ALPHA32I_EXT: + case GL_RGBA16I_EXT: + case GL_RGB16I_EXT: + case GL_RG16I: + case GL_R16I: + case GL_ALPHA16I_EXT: + case GL_INTENSITY16I_EXT: + case GL_LUMINANCE16I_EXT: + case GL_LUMINANCE_ALPHA16I_EXT: + case GL_RGBA8I_EXT: + case GL_RGB8I_EXT: + case GL_RG8I: + case GL_R8I: + case GL_ALPHA8I_EXT: + case GL_INTENSITY8I_EXT: + case GL_LUMINANCE8I_EXT: + case GL_LUMINANCE_ALPHA8I_EXT: + case GL_RGB10_A2UI: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given type is an integer (non-normalized) format. + */ +GLboolean +_mesa_is_type_integer(GLenum type) +{ + switch (type) { + case GL_INT: + case GL_UNSIGNED_INT: + case GL_SHORT: + case GL_UNSIGNED_SHORT: + case GL_BYTE: + case GL_UNSIGNED_BYTE: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if the given format or type is an integer (non-normalized) format. + */ +extern GLboolean +_mesa_is_enum_format_or_type_integer(GLenum format, GLenum type) +{ + return _mesa_is_enum_format_integer(format) || _mesa_is_type_integer(type); +} + + +GLboolean +_mesa_is_type_unsigned(GLenum type) +{ + switch (type) { + case GL_UNSIGNED_INT: + case GL_UNSIGNED_INT_8_8_8_8: + case GL_UNSIGNED_INT_8_8_8_8_REV: + case GL_UNSIGNED_INT_10_10_10_2: + case GL_UNSIGNED_INT_2_10_10_10_REV: + + case GL_UNSIGNED_SHORT: + case GL_UNSIGNED_SHORT_4_4_4_4: + case GL_UNSIGNED_SHORT_5_5_5_1: + case GL_UNSIGNED_SHORT_5_6_5: + case GL_UNSIGNED_SHORT_5_6_5_REV: + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + case GL_UNSIGNED_SHORT_8_8_MESA: + case GL_UNSIGNED_SHORT_8_8_REV_MESA: + + case GL_UNSIGNED_BYTE: + case GL_UNSIGNED_BYTE_3_3_2: + case GL_UNSIGNED_BYTE_2_3_3_REV: + return GL_TRUE; + + default: + return GL_FALSE; + } +} + + +/** + * Convert various base formats to the cooresponding integer format. + */ +GLenum +_mesa_base_format_to_integer_format(GLenum format) +{ + switch(format) { + case GL_RED: + return GL_RED_INTEGER; + case GL_GREEN: + return GL_GREEN_INTEGER; + case GL_BLUE: + return GL_BLUE_INTEGER; + case GL_RG: + return GL_RG_INTEGER; + case GL_RGB: + return GL_RGB_INTEGER; + case GL_RGBA: + return GL_RGBA_INTEGER; + case GL_BGR: + return GL_BGR_INTEGER; + case GL_BGRA: + return GL_BGRA_INTEGER; + case GL_ALPHA: + return GL_ALPHA_INTEGER; + case GL_LUMINANCE: + return GL_LUMINANCE_INTEGER_EXT; + case GL_LUMINANCE_ALPHA: + return GL_LUMINANCE_ALPHA_INTEGER_EXT; + } + + return format; +} + |