This isn't quite true. Fast-clear without CCS compression (also known as
CCS_D) is supported on gen9. There is, however, a bug with blending and
non-0/1 clear colors that we don't currently bother handling in anv. See also:
https://gitlab.freedesktop.org/mesa/mesa/blob/master/src/mesa/drivers/dri/i965/intel_mipmap_tree.c#L2672
On December 21, 2018 06:26:31 Samuel Iglesias Gonsálvez
<sigles...@igalia.com> wrote:
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108911
Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
Lionel, I have doubts if this is only for gen9 or it should be gen9+.
Can you confirm on gen10 if the sRGB bug is happening there and if this
fixes it? (You would need to adapt the GEN_GEN == 9 to >=).
src/intel/vulkan/genX_cmd_buffer.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/intel/vulkan/genX_cmd_buffer.c
b/src/intel/vulkan/genX_cmd_buffer.c
index 93b5269c6ba..cb08ef8df1e 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -324,6 +324,10 @@ color_attachment_compute_aux_usage(struct anv_device *
device,
break;
}
+ /* Gen9 doesn't support fast clear on single-sampled SRGB buffers */
+ if (GEN_GEN == 9 && isl_format_is_srgb(iview->planes[0].isl.format)
&& iview->image->samples == 1)
+ att_state->fast_clear = false;
+
/* Potentially, we could do partial fast-clears but doing so has crazy
* alignment restrictions. It's easier to just restrict to full size
* fast clears for now.
--
2.19.1
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