radv: synchronize after performing a separate depth/stencil fast clears

For depth+stencil images, the driver might use an optimized path
if only one aspect is cleared. It either clears the depth or the
stencil part of HTILE. Because the two separate aspects might use
the same HTILE memory we have to synchronize.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

diff --git a/src/amd/vulkan/radv_meta_clear.c b/src/amd/vulkan/radv_meta_clear.c
index 29905f0..04f0b8a 100644 (file)
--- a/src/amd/vulkan/radv_meta_clear.c
+++ b/src/amd/vulkan/radv_meta_clear.c
@@ -1108,6 +1108,16 @@ radv_fast_clear_depth(struct radv_cmd_buffer *cmd_buffer,
                                              htile_mask);
        }
 
+       if (iview->image->planes[0].surface.has_stencil &&
+           !(aspects == (VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT))) {
+               /* Synchronize after performing a depth-only or a stencil-only
+                * fast clear because the driver uses an optimized path which
+                * performs a read-modify-write operation, and the two separate
+                * aspects might use the same HTILE memory.
+                */
+               cmd_buffer->state.flush_bits |= flush_bits;
+       }
+
        radv_update_ds_clear_metadata(cmd_buffer, iview, clear_value, aspects);
        if (post_flush) {
                *post_flush |= flush_bits;