/*
* 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 "context.h"
#include "glformats.h"
/**
* \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
*/
GLboolean
_mesa_type_is_packed(GLenum type)
{
switch (type) {
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case MESA_UNSIGNED_BYTE_4_4:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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_8_8_MESA:
case GL_UNSIGNED_SHORT_8_8_REV_MESA:
case GL_UNSIGNED_INT_24_8_EXT:
case GL_UNSIGNED_INT_5_9_9_9_REV:
case GL_UNSIGNED_INT_10F_11F_11F_REV:
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Get the size of a GL data type.
*
* \param type GL data type.
*
* \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
* if an invalid type enum.
*/
GLint
_mesa_sizeof_type(GLenum type)
{
switch (type) {
case GL_BITMAP:
return 0;
case GL_UNSIGNED_BYTE:
return sizeof(GLubyte);
case GL_BYTE:
return sizeof(GLbyte);
case GL_UNSIGNED_SHORT:
return sizeof(GLushort);
case GL_SHORT:
return sizeof(GLshort);
case GL_UNSIGNED_INT:
return sizeof(GLuint);
case GL_INT:
return sizeof(GLint);
case GL_FLOAT:
return sizeof(GLfloat);
case GL_DOUBLE:
return sizeof(GLdouble);
case GL_HALF_FLOAT_ARB:
return sizeof(GLhalfARB);
case GL_FIXED:
return sizeof(GLfixed);
default:
return -1;
}
}
/**
* Same as _mesa_sizeof_type() but also accepting the packed pixel
* format data types.
*/
GLint
_mesa_sizeof_packed_type(GLenum type)
{
switch (type) {
case GL_BITMAP:
return 0;
case GL_UNSIGNED_BYTE:
return sizeof(GLubyte);
case GL_BYTE:
return sizeof(GLbyte);
case GL_UNSIGNED_SHORT:
return sizeof(GLushort);
case GL_SHORT:
return sizeof(GLshort);
case GL_UNSIGNED_INT:
return sizeof(GLuint);
case GL_INT:
return sizeof(GLint);
case GL_HALF_FLOAT_ARB:
return sizeof(GLhalfARB);
case GL_FLOAT:
return sizeof(GLfloat);
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case MESA_UNSIGNED_BYTE_4_4:
return sizeof(GLubyte);
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
case GL_UNSIGNED_SHORT_8_8_MESA:
case GL_UNSIGNED_SHORT_8_8_REV_MESA:
return sizeof(GLushort);
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_INT_24_8_EXT:
case GL_UNSIGNED_INT_5_9_9_9_REV:
case GL_UNSIGNED_INT_10F_11F_11F_REV:
return sizeof(GLuint);
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
return 8;
default:
return -1;
}
}
/**
* Get the number of components in a pixel format.
*
* \param format pixel format.
*
* \return the number of components in the given format, or -1 if a bad format.
*/
GLint
_mesa_components_in_format(GLenum format)
{
switch (format) {
case GL_COLOR_INDEX:
case GL_STENCIL_INDEX:
case GL_DEPTH_COMPONENT:
case GL_RED:
case GL_RED_INTEGER_EXT:
case GL_GREEN:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA:
case GL_ALPHA_INTEGER_EXT:
case GL_LUMINANCE:
case GL_LUMINANCE_INTEGER_EXT:
case GL_INTENSITY:
return 1;
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
case GL_RG:
case GL_YCBCR_MESA:
case GL_DEPTH_STENCIL_EXT:
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
case GL_RG_INTEGER:
return 2;
case GL_RGB:
case GL_BGR:
case GL_RGB_INTEGER_EXT:
case GL_BGR_INTEGER_EXT:
return 3;
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
case GL_RGBA_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
return 4;
default:
return -1;
}
}
/**
* Get the bytes per pixel of pixel format type pair.
*
* \param format pixel format.
* \param type pixel type.
*
* \return bytes per pixel, or -1 if a bad format or type was given.
*/
GLint
_mesa_bytes_per_pixel(GLenum format, GLenum type)
{
GLint comps = _mesa_components_in_format(format);
if (comps < 0)
return -1;
switch (type) {
case GL_BITMAP:
return 0; /* special case */
case GL_BYTE:
case GL_UNSIGNED_BYTE:
return comps * sizeof(GLubyte);
case GL_SHORT:
case GL_UNSIGNED_SHORT:
return comps * sizeof(GLshort);
case GL_INT:
case GL_UNSIGNED_INT:
return comps * sizeof(GLint);
case GL_FLOAT:
return comps * sizeof(GLfloat);
case GL_HALF_FLOAT_ARB:
return comps * sizeof(GLhalfARB);
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
if (format == GL_RGB || format == GL_BGR ||
format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
return sizeof(GLubyte);
else
return -1; /* error */
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
if (format == GL_RGB || format == GL_BGR ||
format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
return sizeof(GLushort);
else
return -1; /* error */
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
return sizeof(GLushort);
else
return -1;
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:
if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
return sizeof(GLuint);
else
return -1;
case GL_UNSIGNED_SHORT_8_8_MESA:
case GL_UNSIGNED_SHORT_8_8_REV_MESA:
if (format == GL_YCBCR_MESA)
return sizeof(GLushort);
else
return -1;
case GL_UNSIGNED_INT_24_8_EXT:
if (format == GL_DEPTH_STENCIL_EXT)
return sizeof(GLuint);
else
return -1;
case GL_UNSIGNED_INT_5_9_9_9_REV:
if (format == GL_RGB)
return sizeof(GLuint);
else
return -1;
case GL_UNSIGNED_INT_10F_11F_11F_REV:
if (format == GL_RGB)
return sizeof(GLuint);
else
return -1;
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
if (format == GL_DEPTH_STENCIL)
return 8;
else
return -1;
default:
return -1;
}
}
/**
* 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;
}
}
/**
* Test if the given image format is a color/RGBA format (i.e., not color
* index, depth, stencil, etc).
* \param format the image format value (may by an internal texture format)
* \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
*/
GLboolean
_mesa_is_color_format(GLenum format)
{
switch (format) {
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_R8:
case GL_R16:
case GL_RG:
case GL_RG8:
case GL_RG16:
case 3:
case GL_RGB:
case GL_BGR:
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB565:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
case 4:
case GL_ABGR_EXT:
case GL_RGBA:
case GL_BGRA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
/* float texture formats */
case GL_ALPHA16F_ARB:
case GL_ALPHA32F_ARB:
case GL_LUMINANCE16F_ARB:
case GL_LUMINANCE32F_ARB:
case GL_LUMINANCE_ALPHA16F_ARB:
case GL_LUMINANCE_ALPHA32F_ARB:
case GL_INTENSITY16F_ARB:
case GL_INTENSITY32F_ARB:
case GL_R16F:
case GL_R32F:
case GL_RG16F:
case GL_RG32F:
case GL_RGB16F_ARB:
case GL_RGB32F_ARB:
case GL_RGBA16F_ARB:
case GL_RGBA32F_ARB:
/* compressed formats */
case GL_COMPRESSED_ALPHA:
case GL_COMPRESSED_LUMINANCE:
case GL_COMPRESSED_LUMINANCE_ALPHA:
case GL_COMPRESSED_INTENSITY:
case GL_COMPRESSED_RED:
case GL_COMPRESSED_RG:
case GL_COMPRESSED_RGB:
case GL_COMPRESSED_RGBA:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
#if FEATURE_EXT_texture_sRGB
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
case GL_COMPRESSED_SLUMINANCE_EXT:
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
#endif /* FEATURE_EXT_texture_sRGB */
case GL_COMPRESSED_RED_RGTC1:
case GL_COMPRESSED_SIGNED_RED_RGTC1:
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SIGNED_RG_RGTC2:
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
case GL_ETC1_RGB8_OES:
/* 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_RG_INTEGER:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
/* sized 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:
/* signed, normalized texture formats */
case GL_RED_SNORM:
case GL_R8_SNORM:
case GL_R16_SNORM:
case GL_RG_SNORM:
case GL_RG8_SNORM:
case GL_RG16_SNORM:
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
case GL_RGB16_SNORM:
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
case GL_RGBA16_SNORM:
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
case GL_ALPHA16_SNORM:
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
case GL_LUMINANCE16_SNORM:
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
case GL_LUMINANCE16_ALPHA16_SNORM:
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
case GL_INTENSITY16_SNORM:
case GL_RGB9_E5:
case GL_R11F_G11F_B10F:
case GL_RGB10_A2UI:
return GL_TRUE;
case GL_YCBCR_MESA: /* not considered to be RGB */
/* fall-through */
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a depth component format.
*/
GLboolean
_mesa_is_depth_format(GLenum format)
{
switch (format) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
case GL_DEPTH_COMPONENT32F:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a stencil format.
*/
GLboolean
_mesa_is_stencil_format(GLenum format)
{
switch (format) {
case GL_STENCIL_INDEX:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a YCbCr format.
*/
GLboolean
_mesa_is_ycbcr_format(GLenum format)
{
switch (format) {
case GL_YCBCR_MESA:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a depth+stencil format.
*/
GLboolean
_mesa_is_depthstencil_format(GLenum format)
{
switch (format) {
case GL_DEPTH24_STENCIL8_EXT:
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH32F_STENCIL8:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a depth or stencil format.
*/
GLboolean
_mesa_is_depth_or_stencil_format(GLenum format)
{
switch (format) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
case GL_DEPTH_COMPONENT32F:
case GL_DEPTH32F_STENCIL8:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if the given image format is a dudv format.
*/
GLboolean
_mesa_is_dudv_format(GLenum format)
{
switch (format) {
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Test if an image format is a supported compressed format.
* \param format the internal format token provided by the user.
* \return GL_TRUE if compressed, GL_FALSE if uncompressed
*/
GLboolean
_mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
{
switch (format) {
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return ctx->Extensions.EXT_texture_compression_s3tc;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.EXT_texture_compression_s3tc;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.S3_s3tc;
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.EXT_texture_sRGB
&& ctx->Extensions.EXT_texture_compression_s3tc;
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.TDFX_texture_compression_FXT1;
case GL_COMPRESSED_RED_RGTC1:
case GL_COMPRESSED_SIGNED_RED_RGTC1:
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SIGNED_RG_RGTC2:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.ARB_texture_compression_rgtc;
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
return ctx->API == API_OPENGL
&& ctx->Extensions.EXT_texture_compression_latc;
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
return ctx->API == API_OPENGL
&& ctx->Extensions.ATI_texture_compression_3dc;
case GL_ETC1_RGB8_OES:
return _mesa_is_gles(ctx)
&& ctx->Extensions.OES_compressed_ETC1_RGB8_texture;
#if FEATURE_ES
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
return ctx->API == API_OPENGLES;
#endif
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;
}
/**
* Does the given base texture/renderbuffer format have the channel
* named by 'pname'?
*/
GLboolean
_mesa_base_format_has_channel(GLenum base_format, GLenum pname)
{
switch (pname) {
case GL_TEXTURE_RED_SIZE:
case GL_TEXTURE_RED_TYPE:
case GL_RENDERBUFFER_RED_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
if (base_format == GL_RED ||
base_format == GL_RG ||
base_format == GL_RGB ||
base_format == GL_RGBA) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_GREEN_SIZE:
case GL_TEXTURE_GREEN_TYPE:
case GL_RENDERBUFFER_GREEN_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
if (base_format == GL_RG ||
base_format == GL_RGB ||
base_format == GL_RGBA) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_BLUE_SIZE:
case GL_TEXTURE_BLUE_TYPE:
case GL_RENDERBUFFER_BLUE_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
if (base_format == GL_RGB ||
base_format == GL_RGBA) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_ALPHA_SIZE:
case GL_TEXTURE_ALPHA_TYPE:
case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
if (base_format == GL_RGBA ||
base_format == GL_ALPHA ||
base_format == GL_LUMINANCE_ALPHA) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_LUMINANCE_SIZE:
case GL_TEXTURE_LUMINANCE_TYPE:
if (base_format == GL_LUMINANCE ||
base_format == GL_LUMINANCE_ALPHA) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_INTENSITY_SIZE:
case GL_TEXTURE_INTENSITY_TYPE:
if (base_format == GL_INTENSITY) {
return GL_TRUE;
}
return GL_FALSE;
case GL_TEXTURE_DEPTH_SIZE:
case GL_TEXTURE_DEPTH_TYPE:
case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
if (base_format == GL_DEPTH_STENCIL ||
base_format == GL_DEPTH_COMPONENT) {
return GL_TRUE;
}
return GL_FALSE;
case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
if (base_format == GL_DEPTH_STENCIL ||
base_format == GL_STENCIL_INDEX) {
return GL_TRUE;
}
return GL_FALSE;
default:
_mesa_warning(NULL, "%s: Unexpected channel token 0x%x\n",
__FUNCTION__, pname);
return GL_FALSE;
}
return GL_FALSE;
}
/**
* If format is a generic compressed format, return the corresponding
* non-compressed format. For other formats, return the format as-is.
*/
GLenum
_mesa_generic_compressed_format_to_uncompressed_format(GLenum format)
{
switch (format) {
case GL_COMPRESSED_RED:
return GL_RED;
case GL_COMPRESSED_RG:
return GL_RG;
case GL_COMPRESSED_RGB:
return GL_RGB;
case GL_COMPRESSED_RGBA:
return GL_RGBA;
case GL_COMPRESSED_ALPHA:
return GL_ALPHA;
case GL_COMPRESSED_LUMINANCE:
return GL_LUMINANCE;
case GL_COMPRESSED_LUMINANCE_ALPHA:
return GL_LUMINANCE_ALPHA;
case GL_COMPRESSED_INTENSITY:
return GL_INTENSITY;
/* sRGB formats */
case GL_COMPRESSED_SRGB:
return GL_SRGB;
case GL_COMPRESSED_SRGB_ALPHA:
return GL_SRGB_ALPHA;
case GL_COMPRESSED_SLUMINANCE:
return GL_SLUMINANCE;
case GL_COMPRESSED_SLUMINANCE_ALPHA:
return GL_SLUMINANCE_ALPHA;
default:
return format;
}
}
/**
* Do error checking of format/type combinations for glReadPixels,
* glDrawPixels and glTex[Sub]Image. Note that depending on the format
* and type values, we may either generate GL_INVALID_OPERATION or
* GL_INVALID_ENUM.
*
* \param format pixel format.
* \param type pixel type.
*
* \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
*/
GLenum
_mesa_error_check_format_and_type(const struct gl_context *ctx,
GLenum format, GLenum type)
{
/* special type-based checks (see glReadPixels, glDrawPixels error lists) */
switch (type) {
case GL_BITMAP:
if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) {
return GL_INVALID_ENUM;
}
break;
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
if (format == GL_RGB) {
break; /* OK */
}
if (format == GL_RGB_INTEGER_EXT &&
ctx->Extensions.ARB_texture_rgb10_a2ui) {
break; /* OK */
}
return GL_INVALID_OPERATION;
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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:
if (format == GL_RGBA ||
format == GL_BGRA ||
format == GL_ABGR_EXT) {
break; /* OK */
}
if ((format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT) &&
ctx->Extensions.ARB_texture_rgb10_a2ui) {
break; /* OK */
}
return GL_INVALID_OPERATION;
case GL_UNSIGNED_INT_24_8:
if (!ctx->Extensions.EXT_packed_depth_stencil) {
return GL_INVALID_ENUM;
}
if (format != GL_DEPTH_STENCIL) {
return GL_INVALID_OPERATION;
}
return GL_NO_ERROR;
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
if (!ctx->Extensions.ARB_depth_buffer_float) {
return GL_INVALID_ENUM;
}
if (format != GL_DEPTH_STENCIL) {
return GL_INVALID_OPERATION;
}
return GL_NO_ERROR;
case GL_UNSIGNED_INT_10F_11F_11F_REV:
if (!ctx->Extensions.EXT_packed_float) {
return GL_INVALID_ENUM;
}
if (format != GL_RGB) {
return GL_INVALID_OPERATION;
}
return GL_NO_ERROR;
default:
; /* fall-through */
}
/* now, for each format, check the type for compatibility */
switch (format) {
case GL_COLOR_INDEX:
case GL_STENCIL_INDEX:
switch (type) {
case GL_BITMAP:
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
#if 0 /* not legal! see table 3.6 of the 1.5 spec */
case GL_INTENSITY:
#endif
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_DEPTH_COMPONENT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RG:
if (!ctx->Extensions.ARB_texture_rg)
return GL_INVALID_ENUM;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RGB:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_INT_5_9_9_9_REV:
return ctx->Extensions.EXT_texture_shared_exponent
? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_INT_10F_11F_11F_REV:
return ctx->Extensions.EXT_packed_float
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_BGR:
switch (type) {
/* NOTE: no packed types are supported with BGR. That's
* intentional, according to the GL spec.
*/
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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:
return GL_NO_ERROR;
case GL_HALF_FLOAT:
return ctx->Extensions.ARB_half_float_pixel
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_YCBCR_MESA:
if (!ctx->Extensions.MESA_ycbcr_texture)
return GL_INVALID_ENUM;
if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
return GL_NO_ERROR;
else
return GL_INVALID_OPERATION;
case GL_DEPTH_STENCIL_EXT:
if (ctx->Extensions.EXT_packed_depth_stencil &&
type == GL_UNSIGNED_INT_24_8)
return GL_NO_ERROR;
else if (ctx->Extensions.ARB_depth_buffer_float &&
type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV)
return GL_NO_ERROR;
else
return GL_INVALID_ENUM;
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
if (!ctx->Extensions.ATI_envmap_bumpmap)
return GL_INVALID_ENUM;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_NO_ERROR;
default:
return GL_INVALID_ENUM;
}
/* integer-valued formats */
case GL_RED_INTEGER_EXT:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_RG_INTEGER:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
return (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer)
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RGB_INTEGER_EXT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
return (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer)
? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
return ctx->Extensions.ARB_texture_rgb10_a2ui
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_BGR_INTEGER_EXT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
/* NOTE: no packed formats w/ BGR format */
return (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer)
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_RGBA_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
return (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer)
? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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:
return ctx->Extensions.ARB_texture_rgb10_a2ui
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
return ctx->Extensions.EXT_texture_integer
? GL_NO_ERROR : GL_INVALID_ENUM;
default:
return GL_INVALID_ENUM;
}
default:
return GL_INVALID_ENUM;
}
return GL_NO_ERROR;
}