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anv/formats: Set the swizzle to RGB1 when using an RGBA format to fake RGB 

This way we get correct sampling from RGB formats that are faked as RGBA.
This should also cause it to disable rendering and blending on those
formats.  We should be able to render to them and, on Broadwell and above,
we can blend on them with work-arounds.  However, we'll add support for
that more properly later when it's deemed useful.  For now, disabling
rendering and blending should be safe.
This commit is contained in:
Jason Ekstrand 2016-05-15 21:50:47 -07:00
parent ce375fba41
commit 100db3d31c
1 changed files with 5 additions and 2 deletions
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7
src/intel/vulkan/anv_formats.c
View File

@ -34,6 +34,7 @@
#define RGBA ISL_SWIZZLE(RED, GREEN, BLUE, ALPHA)
#define BGRA ISL_SWIZZLE(BLUE, GREEN, RED, ALPHA)
#define RGB1 ISL_SWIZZLE(RED, GREEN, BLUE, ONE)
#define swiz_fmt(__vk_fmt, __hw_fmt, __swizzle) \
[__vk_fmt] = { \
@ -278,10 +279,12 @@ anv_get_format(VkFormat vk_format, VkImageAspectFlags aspect,
* hood.
*/
enum isl_format rgbx = isl_format_rgb_to_rgbx(format.isl_format);
if (rgbx != ISL_FORMAT_UNSUPPORTED)
if (rgbx != ISL_FORMAT_UNSUPPORTED) {
format.isl_format = rgbx;
else
} else {
format.isl_format = isl_format_rgb_to_rgba(format.isl_format);
format.swizzle = (struct anv_format_swizzle) RGB1;
}
}
return format;