Set uninitialized frame number to 0
Now that the frame number is a uint instead of an int it's clearer if the uninitailized value is 0. Frame numbers start from 1 so 0 doesn't collide with any valid frame numbers. It also means comparing frame numbers to check if the frame is newer always works even when comparing to the uninitialized frame number.
Test: N/A
Change-Id: I0901ffeaefbdd6378e59d8858a06de92b0104cd9
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 852cbda6..ec91e66 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -281,7 +281,8 @@
// Need at least 4 because we do quad buffer. Add a 5th for good measure.
RingBuffer<SwapHistory, 5> mSwapHistory;
- uint64_t mFrameNumber = -1;
+ // Frame numbers start at 1, 0 means uninitialized
+ uint64_t mFrameNumber = 0;
int64_t mDamageId = 0;
// last vsync for a dropped frame due to stuffed queue
