From: Nicolai Hähnle <[email protected]>
There is never a read-after-write hazard because the command doesn't read.
---
src/gallium/drivers/radeonsi/si_cp_dma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c
b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 33220d9f0fa..80673f3f5f2 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -182,21 +182,22 @@ static void si_cp_dma_prepare(struct si_context *sctx,
struct pipe_resource *dst
r600_resource(src),
RADEON_USAGE_READ,
RADEON_PRIO_CP_DMA);
}
/* Flush the caches for the first copy only.
* Also wait for the previous CP DMA operations.
*/
if (!(user_flags & SI_CPDMA_SKIP_GFX_SYNC) && sctx->flags)
si_emit_cache_flush(sctx);
- if (!(user_flags & SI_CPDMA_SKIP_SYNC_BEFORE) && *is_first)
+ if (!(user_flags & SI_CPDMA_SKIP_SYNC_BEFORE) && *is_first &&
+ !(*packet_flags & CP_DMA_CLEAR))
*packet_flags |= CP_DMA_RAW_WAIT;
*is_first = false;
/* Do the synchronization after the last dma, so that all data
* is written to memory.
*/
if (!(user_flags & SI_CPDMA_SKIP_SYNC_AFTER) &&
byte_count == remaining_size) {
*packet_flags |= CP_DMA_SYNC;
--
2.19.1
_______________________________________________
mesa-dev mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
