Rewrite VirtualDisplaySurface
The previous implementation assumed that the HWC could read and write
the same buffer on frames that involved both GLES and HWC composition.
It turns out some hardware can't do this. The new implementation
maintains a scratch buffer pool to use on these mixed frames, but on
GLES-only or HWC-only frames still does composition directly into the
output buffer.
Bug: 8384764
Change-Id: I7a3addb34fad9bfcbdabbb8b635083e10223df69
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
index 10bca38..3f51345 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
@@ -72,6 +72,10 @@
return getBufferQueue();
}
+status_t FramebufferSurface::prepareFrame(CompositionType compositionType) {
+ return NO_ERROR;
+}
+
status_t FramebufferSurface::advanceFrame() {
// Once we remove FB HAL support, we can call nextBuffer() from here
// instead of using onFrameAvailable(). No real benefit, except it'll be