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anv/formats: Don't use an RGBX format if it isn't renderable

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The whole point of using RGBX is so that we can render to it so if it isn't
renderable, that kind-of defeats the purpose.  Some formats (one example is
R32G32B32X32_SFLOAT) exist in the format table but aren't actually
renderable.  Eventually, we'd like to get away from RGBX entirely, but this
fixes hangs on BDW today.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jason Ekstrand
2016-07-26 11:33:45 -07:00
parent 4f3f8bb59d
commit fb90291dd5
1 changed files with 2 additions and 1 deletions
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3
src/intel/vulkan/anv_formats.c
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@@ -278,7 +278,8 @@ anv_get_format(const struct brw_device_info *devinfo, VkFormat vk_format,
* hood.
*/
enum isl_format rgbx = isl_format_rgb_to_rgbx(format.isl_format);
if (rgbx != ISL_FORMAT_UNSUPPORTED) {
if (rgbx != ISL_FORMAT_UNSUPPORTED &&
isl_format_supports_rendering(devinfo, rgbx)) {
format.isl_format = rgbx;
} else {
format.isl_format = isl_format_rgb_to_rgba(format.isl_format);