[PATCH] present: Execute right away if target_msc equals current_msc

[Jammy Zhou]

It is according to the protocol:

"If 'options' contains PresentOptionAsync, and the 'target-msc'
is less than or equal to the current msc for 'window', then
the operation will be performed as soon as possible, not
necessarily waiting for the next vertical blank interval."

Signed-off-by: Jammy Zhou <Jammy.Zhou at amd.com>
---
 present/present.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/present/present.c b/present/present.c
index beb4ff0..5900c22 100644
--- a/present/present.c
+++ b/present/present.c
@@ -871,7 +871,7 @@ present_pixmap(WindowPtr window,
 
     xorg_list_add(&vblank->event_queue, &present_exec_queue);
     vblank->queued = TRUE;
-    if ((pixmap && target_msc >= crtc_msc) || (!pixmap && target_msc > crtc_msc)) {
+    if (target_msc > crtc_msc) {
         ret = present_queue_vblank(screen, target_crtc, vblank->event_id, target_msc);
         if (ret == Success)
             return Success;
-- 
1.9.1