[Mesa-dev] [PATCH 3/5] radv: add a workaround for fast clears with DCC and MSAA textures
Samuel Pitoiset
samuel.pitoiset at gmail.com
Tue Apr 17 14:05:16 UTC 2018
This should be fixed at some point in order to improve
performance.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
src/amd/vulkan/radv_meta_clear.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/amd/vulkan/radv_meta_clear.c b/src/amd/vulkan/radv_meta_clear.c
index 86e0bc17ed8..858e3368b65 100644
--- a/src/amd/vulkan/radv_meta_clear.c
+++ b/src/amd/vulkan/radv_meta_clear.c
@@ -1062,6 +1062,15 @@ emit_fast_color_clear(struct radv_cmd_buffer *cmd_buffer,
if (iview->image->info.samples > 1) {
/* DCC fast clear with MSAA should clear CMASK. */
+ /* FIXME: This doesn't work for now. There is a
+ * hardware bug with fast clears and DCC for MSAA
+ * textures. AMDVLK has a workaround but it doesn't
+ * seem to work here. Note that we might emit useless
+ * CB flushes but that shouldn't matter.
+ */
+ if (!can_avoid_fast_clear_elim)
+ goto fail;
+
assert(radv_image_has_cmask(iview->image));
flush_bits = radv_clear_cmask(cmd_buffer, iview->image,
--
2.17.0
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