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mesa: add helper _mesa_is_format_etc2 

v2: renamed GLboolean -> bool

Reviewed-by: Glenn Kennard <glenn.kennard@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Marek Olšák 2014-08-02 20:24:34 +02:00
parent f24be73401
commit ddc8003c61
2 changed files with 28 additions and 0 deletions
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25
src/mesa/main/formats.c
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@ -376,6 +376,31 @@ _mesa_get_format_color_encoding(mesa_format format)
}
/**
* Return TRUE if format is an ETC2 compressed format specified
* by GL_ARB_ES3_compatibility.
*/
bool
_mesa_is_format_etc2(mesa_format format)
{
switch (format) {
case MESA_FORMAT_ETC2_RGB8:
case MESA_FORMAT_ETC2_SRGB8:
case MESA_FORMAT_ETC2_RGBA8_EAC:
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
case MESA_FORMAT_ETC2_R11_EAC:
case MESA_FORMAT_ETC2_RG11_EAC:
case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
return GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* For an sRGB format, return the corresponding linear color space format.
* For non-sRGB formats, return the format as-is.

3
src/mesa/main/formats.h
View File

@ -476,6 +476,9 @@ _mesa_is_format_signed(mesa_format format);
extern GLboolean
_mesa_is_format_integer(mesa_format format);
extern bool
_mesa_is_format_etc2(mesa_format format);
extern GLenum
_mesa_get_format_color_encoding(mesa_format format);