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mesa/glformats: Add a helper function _mesa_is_srgb_format()

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Returns true if the passed format is an sRGB format, false otherwise.

Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Eduardo Lima Mitev 2016-02-03 13:40:27 +01:00
parent 87b2de3998
commit b1755535ec
2 changed files with 48 additions and 0 deletions
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45
src/mesa/main/glformats.c
View file

@ -1338,6 +1338,51 @@ _mesa_is_compressed_format(const struct gl_context *ctx, GLenum format)
}
}
/**
* Test if the given format represents an sRGB format.
* \param format the GL format (can be an internal format)
* \return GL_TRUE if format is sRGB, GL_FALSE otherwise
*/
GLboolean
_mesa_is_srgb_format(GLenum format)
{
switch (format) {
case GL_SRGB:
case GL_SRGB8:
case GL_SRGB_ALPHA:
case GL_SRGB8_ALPHA8:
case GL_COMPRESSED_SRGB:
case GL_COMPRESSED_SRGB_ALPHA:
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:
case GL_COMPRESSED_SRGB8_ETC2:
case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
return GL_TRUE;
default:
break;
}
return GL_FALSE;
}
/**
* Convert various unpack formats to the corresponding base format.
*/

3
src/mesa/main/glformats.h
View file

@ -101,6 +101,9 @@ _mesa_is_depth_or_stencil_format(GLenum format);
extern GLboolean
_mesa_is_compressed_format(const struct gl_context *ctx, GLenum format);
extern GLboolean
_mesa_is_srgb_format(GLenum format);
extern GLenum
_mesa_base_format_to_integer_format(GLenum format);