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-rw-r--r--src/intel_dri.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/intel_dri.c b/src/intel_dri.c
index 25a7b9ec..42b8ee8a 100644
--- a/src/intel_dri.c
+++ b/src/intel_dri.c
@@ -1230,7 +1230,13 @@ I830DRI2ScheduleSwap(ClientPtr client, DrawablePtr draw, DRI2BufferPtr front,
* the swap.
*/
if (divisor == 0 || current_msc < *target_msc) {
- if (flip && I830DRI2ScheduleFlip(intel, draw, swap_info))
+ /*
+ * If we can, schedule the flip directly from here rather
+ * than waiting for an event from the kernel for the current
+ * (or a past) MSC.
+ */
+ if (flip && divisor == 0 && current_msc >= *target_msc &&
+ I830DRI2ScheduleFlip(intel, draw, swap_info))
return TRUE;
vbl.request.type =