tree 022fc23512ae5adfbe3f86351305bc9f4538a68a
parent e222e359a0aab985488a711f6edb76820fe8c6df
author Chris Craik <ccraik@google.com> 1408048441 -0700
committer Chris Craik <ccraik@google.com> 1408064384 +0000

Define shadow casting behavior within layers

bug:15860114

Savelayers and HW layers both now support shadow casting.

For save layers, the light source should always be correct, for HW
layers, the light source position is set when the layer is created,
and updated when it is resized.

Change-Id: Ie85567dd43c2bb0a0b08fd0bd4db41efa793ac2b