surfaceflinger: return fence fd from RenderEngine::flush
The caller does not need to work with EGLSync after this chnage.
Test: SurfaceFlinger_test
Change-Id: I1cf7d11d3023d09be8a73001493c39b4309e7542
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
index bd5eac2..074e97c 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.h
@@ -77,7 +77,8 @@
virtual void dump(String8& result);
// helpers
- void flush();
+ // flush returns -1 or a valid native fence fd owned by the caller
+ int flush(bool wait);
void clearWithColor(float red, float green, float blue, float alpha);
void fillRegionWithColor(const Region& region, uint32_t height,
float red, float green, float blue, float alpha);