Mesa (main): radv: perform a FCE for MSAA images that might have been fast-cleared

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Module: Mesa
Branch: main
Commit: f136838d1ec784382ece8099d195422e28ec5e5c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f136838d1ec784382ece8099d195422e28ec5e5c

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Tue Aug  3 11:36:36 2021 +0200

radv: perform a FCE for MSAA images that might have been fast-cleared

FMASK_DECOMPRESS can't eliminate DCC fast clears. This will allow to
enable DCC MSAA fast clears that require a FCE.

Only supported on GFX10+.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12180>

---

 src/amd/vulkan/radv_meta_fast_clear.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amd/vulkan/radv_meta_fast_clear.c b/src/amd/vulkan/radv_meta_fast_clear.c
index 5b7d4e33814..f4d918a5181 100644
--- a/src/amd/vulkan/radv_meta_fast_clear.c
+++ b/src/amd/vulkan/radv_meta_fast_clear.c
@@ -783,6 +783,13 @@ radv_fast_clear_flush_image_inplace(struct radv_cmd_buffer *cmd_buffer, struct r
                                     const VkImageSubresourceRange *subresourceRange)
 {
    if (radv_image_has_fmask(image) && !image->tc_compatible_cmask) {
+      if (radv_image_has_dcc(image) && radv_image_has_cmask(image)) {
+         /* MSAA images with DCC and CMASK might have been fast-cleared and might require a FCE but
+          * FMASK_DECOMPRESS can't eliminate DCC fast clears.
+          */
+         radv_fast_clear_eliminate(cmd_buffer, image, subresourceRange);
+      }
+
       radv_fmask_decompress(cmd_buffer, image, subresourceRange);
    } else {
       radv_fast_clear_eliminate(cmd_buffer, image, subresourceRange);