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/*
* 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;
}
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