Commits on Oct 26, 2016

1. Use texture layers for render target allocations, remove render phases. …

   Instead of splitting the scene into multiple phases, use texture
   layers to allocate slices as needed for each pass of the render
   frame. These are pooled and only allocated when the frame render
   target configuration changes.
   
   Previously, the code asserted if it was unable to fit the render
   tasks into a single render target for a single tile. Now, this
   (pathological) case is handled correctly.
   
   This makes the upcoming dynamic primitive cache support a lot
   simpler to add. It also means that we don't use a ping-pong
   allocation style, which typically performs badly on mobile / tiled
   rendering architectures.

   

   gw3583 committed Oct 26, 2016

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