From 438af0c7d4bf60b408b259c88205ff2193195466 Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 21 Sep 2014 18:11:28 +0200 Subject: 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 --- mesalib/src/gallium/auxiliary/util/u_format.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'mesalib/src/gallium/auxiliary/util/u_format.c') 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 @@ -91,6 +91,23 @@ util_format_is_luminance(enum pipe_format format) return FALSE; } +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) { -- cgit v1.2.3