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radeonsi: fix waiting for PS to finish if there are no CB/DB bindings on gfx6-8

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Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31082>
This commit is contained in:
Marek Olšák 2024-09-17 14:25:03 -04:00
parent 495e88eab5
commit e0f8993336
1 changed files with 7 additions and 1 deletions
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8
src/gallium/drivers/radeonsi/si_gfx_cs.c
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@ -986,8 +986,14 @@ void gfx6_emit_cache_flush(struct si_context *sctx, struct radeon_cmdbuf *cs)
/* Wait for shader engines to go idle.
* VS and PS waits are unnecessary if SURFACE_SYNC is going to wait
* for everything including CB/DB cache flushes.
*
* GFX6-8: SURFACE_SYNC with CB_ACTION_ENA doesn't do anything if there are no CB/DB bindings.
* Reproducible with: piglit/arb_framebuffer_no_attachments-atomic
*
* GFX9: The TS event is always written after full pipeline completion regardless of CB/DB
* bindings.
*/
if (!flush_cb_db) {
if (sctx->gfx_level <= GFX8 || !flush_cb_db) {
if (flags & SI_CONTEXT_PS_PARTIAL_FLUSH) {
radeon_event_write(V_028A90_PS_PARTIAL_FLUSH);
/* Only count explicit shader flushes, not implicit ones done by SURFACE_SYNC. */