radv: add a comment about VK_AMD_mixed_attachment_samples on GFX6-GFX7

There is some CTS failures.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3808>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3808>

diff --git a/src/amd/vulkan/radv_extensions.py b/src/amd/vulkan/radv_extensions.py
index 1a405ee2d2cc9e2681c5cfaae5f0ece8c21b97d0..a8d1d0748b18188cbb3bc150cee9fe61585e167e 100644 (file)
--- a/src/amd/vulkan/radv_extensions.py
+++ b/src/amd/vulkan/radv_extensions.py
@@ -156,6 +156,7 @@ EXTENSIONS = [
     Extension('VK_AMD_gcn_shader',                        1, True),
     Extension('VK_AMD_gpu_shader_half_float',             1, '!device->use_aco && device->rad_info.chip_class >= GFX9'),
     Extension('VK_AMD_gpu_shader_int16',                  1, '!device->use_aco && device->rad_info.chip_class >= GFX9'),
+    # Disable mixed attachment samples on GFX6-GFX7 until the CTS failures have been resolved.
     Extension('VK_AMD_mixed_attachment_samples',          1, 'device->rad_info.chip_class >= GFX8'),
     Extension('VK_AMD_rasterization_order',               1, 'device->rad_info.has_out_of_order_rast'),
     Extension('VK_AMD_shader_ballot',                     1, 'device->use_shader_ballot'),