kin-cheng/android_frameworks_native — pull request #3 by kin-cheng (2014-09-29 16:04:38+00:00)
Title: sf: Clear FrameBuffer only if there are GLES composed layers

Clear FrameBuffer Target only if there are layers to be composed by
GLES. Otherwise, it results unnecessary gl calls and increases power
consumption in full MDP comp use cases.

Change-Id: Ib84c4fe154bb67668e4e8b8ce2f2328c55aed7c6