SF: use peak refresh rate for HWC backpressure
The logic we have for selecting which fence to use to detect
backpressure replies on the assumption that continuously presents as
the rate of vsync. This is not true for VRR displays.
Bug: 296635687
Test: adb root && adb shell service call SurfaceFlinger 1045 f 0.9
Change-Id: Iaceb45741fd657b8c551f51b3c76a643df116da8
diff --git a/services/surfaceflinger/Scheduler/VSyncTracker.h b/services/surfaceflinger/Scheduler/VSyncTracker.h
index 2ae5c0b..aa18897 100644
--- a/services/surfaceflinger/Scheduler/VSyncTracker.h
+++ b/services/surfaceflinger/Scheduler/VSyncTracker.h
@@ -68,6 +68,11 @@
*/
virtual nsecs_t currentPeriod() const = 0;
+ /*
+ * The minimal period frames can be displayed.
+ */
+ virtual Period minFramePeriod() const = 0;
+
/* Inform the tracker that the samples it has are not accurate for prediction. */
virtual void resetModel() = 0;