Chris Craik 0e87f00f8c Initialize MergingDrawBatch clip with viewport bounds
This allows merged, clipped operations to behave correctly within a
savelayer, even if the base viewport has a large offset.

Additionally, disregard opaqueness when within a
complexclip/savelayer, as the coverage can't be trusted.

Change-Id: Ic908b82a4bb410bc7fac1b4295f4874ed166efc5
2013-06-21 13:16:31 -07:00
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