tree 378faa3353b69fc08344488d191f7c9d733efcde
parent fc60b94db9081adb4835bd44eacdd0573fc4d644
author Mathias Agopian <mathias@google.com> 1316750224 -0700
committer Mathias Agopian <mathias@google.com> 1316750224 -0700

don't clear the framebuffer when the framebuffer is not used

when areas of the FB are undefined (transparent windows on top of
nothing), we clear those areas before composition.
however, it makes no sense to do this when the FB is not in use
(case where hwc handles all layers)

Bug: 5360529
Change-Id: If51bb669307e8419bbe1f3a89d1c88e0ec1f216c