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present: Also flush before using a flip to unflip

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

(Ported from radeon commit 9a951a3e551db58ba50e7a594521ceac54d90615)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer
2017-03-03 16:28:41 +09:00
committed by Michel Dänzer
parent f6a3c87c30
commit b31489c086
1 changed files with 1 additions and 0 deletions
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src/amdgpu_present.c
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@@ -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))