tree 9b7fa9d577d74452561d9c8a021146dc4c8df0d8
parent d863b3af2f5d521f9420ff22f7770843c50d24ae
author Matthew Bouyack <mbouyack@google.com> 1494274441 -0700
committer Matthew Bouyack <mbouyack@google.com> 1494274441 -0700

Disable backpressure propagation in SurfaceFlinger for 8x09 devices.

Because the msm8x09 hardware composer has a total latency of
up to 30ms (from 'handleMessageInvalidate' until the image appears
on the screen) backpressure propagation causes us to run at 30Hz.

This change allows us to run smoothly at 60Hz.

Also note that we should be able to revert this change in the event
that we switch to a native HWC2.0 implementation.

Fixes bug: 37941536

Change-Id: Ie045432e4de72ab59b206ae324e26d54795c9b8a