[PATCH xf86-video-amdgpu 4/9] present: Also flush before using a flip to unflip

[michel@xxxxxxxxxxx (Michel Dänzer)]

From: Michel Dänzer <michel.daenzer@xxxxxxx>

Not doing so might result in intermittently scanning out stale contents
of the screen pixmap.

(Ported from radeon commit 9a951a3e551db58ba50e7a594521ceac54d90615)

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/amdgpu_present.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/amdgpu_present.c b/src/amdgpu_present.c
index cf6e36b2f..4048f9844 100644
--- a/src/amdgpu_present.c
+++ b/src/amdgpu_present.c
@@ -366,6 +366,7 @@ amdgpu_present_unflip(ScreenPtr screen, uint64_t event_id)
 	event->event_id = event_id;
 	event->unflip = TRUE;
 
+	amdgpu_glamor_flush(scrn);
 	if (amdgpu_do_pageflip(scrn, AMDGPU_DRM_QUEUE_CLIENT_DEFAULT, pixmap,
 			       event_id, event, -1, amdgpu_present_flip_event,
 			       amdgpu_present_flip_abort, FLIP_VSYNC, 0))
-- 
2.11.0