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| author | marha <marha@users.sourceforge.net> | 2014-09-21 18:11:28 +0200 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2014-09-21 18:11:28 +0200 |
| commit | 438af0c7d4bf60b408b259c88205ff2193195466 (patch) | |
| tree | 46fd6465cb7431f64a3cb475a40587a261983af4 /mesalib/src/gallium/auxiliary/util/u_format.c | |
| parent | d0f70707dde032e662dbd5bc70df6ac915403abe (diff) | |
| download | vcxsrv-438af0c7d4bf60b408b259c88205ff2193195466.tar.gz vcxsrv-438af0c7d4bf60b408b259c88205ff2193195466.tar.bz2 vcxsrv-438af0c7d4bf60b408b259c88205ff2193195466.zip | |
libxtrans xkeyboard-config xserver mesa plink glproto git update 21 Sep 2014
plink revision 10233
xserver commit 28337cb14e4347e1dd7936c5393a22e042866687
xkeyboard-config commit 48e1c0b351b6711edc0f167cbb81e4424b75291a
glproto commit bd3d751e1eb17efb39f65093271bb4ac071aa9e0
libxtrans commit fb7f198c88e97d22c8c89e76e9cd06b2b2720a96
mesa commit 4eb2bbefd2bf0359aff7ebbb8e931a1c7833606f
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_format.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_format.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_format.c b/mesalib/src/gallium/auxiliary/util/u_format.c index d53dd7884..c1ce40811 100644 --- a/mesalib/src/gallium/auxiliary/util/u_format.c +++ b/mesalib/src/gallium/auxiliary/util/u_format.c @@ -92,6 +92,23 @@ util_format_is_luminance(enum pipe_format format) } boolean +util_format_is_alpha(enum pipe_format format) +{ + const struct util_format_description *desc = + util_format_description(format); + + if ((desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB || + desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) && + desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_0 && + desc->swizzle[1] == UTIL_FORMAT_SWIZZLE_0 && + desc->swizzle[2] == UTIL_FORMAT_SWIZZLE_0 && + desc->swizzle[3] == UTIL_FORMAT_SWIZZLE_X) { + return TRUE; + } + return FALSE; +} + +boolean util_format_is_pure_integer(enum pipe_format format) { const struct util_format_description *desc = util_format_description(format); |