mesa: fix SRGB alpha channel value in pack_float_R8G8B8X8_SRGB

Jason pointed out the bug on review adding new formats,
but the existing format also appears to have the bug, so
use 255 as the max, these are SRGB no SNORM.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/mesa/main/format_pack.c b/src/mesa/main/format_pack.c
index 6cbf859..6bf174a 100644 (file)
--- a/src/mesa/main/format_pack.c
+++ b/src/mesa/main/format_pack.c
@@ -1713,7 +1713,7 @@ pack_float_R8G8B8X8_SRGB(const GLfloat src[4], void *dst)
    GLubyte r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
    GLubyte g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
    GLubyte b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(127, b, g, r);
+   *d = PACK_COLOR_8888(255, b, g, r);
 }