Mesa (master): radv: prevent fast-clearing uncompressed DCC levels

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Module: Mesa
Branch: master
Commit: 5537c9de73a2af8a9203d261ed914df92b7ae467
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5537c9de73a2af8a9203d261ed914df92b7ae467

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Wed Jan 13 10:31:15 2021 +0100

radv: prevent fast-clearing uncompressed DCC levels

When size is 0, this means the level can't be compressed.

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/8468>

---

 src/amd/vulkan/radv_meta_clear.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/amd/vulkan/radv_meta_clear.c b/src/amd/vulkan/radv_meta_clear.c
index 021232708ec..4cad6c57bb4 100644
--- a/src/amd/vulkan/radv_meta_clear.c
+++ b/src/amd/vulkan/radv_meta_clear.c
@@ -1437,6 +1437,10 @@ radv_clear_dcc(struct radv_cmd_buffer *cmd_buffer,
 			size = surf_level->dcc_slice_fast_clear_size * radv_get_layerCount(image, range);
 		}
 
+		/* Do not clear this level if it can't be compressed. */
+		if (!size)
+			continue;
+
 		flush_bits |= radv_fill_buffer(cmd_buffer, image->bo, offset,
 					       size, value);
 	}