Commits on Sep 11, 2017

1. Add recycle() to free list, and support cloning weak handles.

   

   gw3583 committed Sep 11, 2017
   813d7f2

2. Introduce ClipStore, an arena for storing clip sources. …

   This reduces a lot of memory copying and allocations, since
   the clip stack built each frame now just contains handles
   into the clip store, rather than copying the entire mask cache.

   

   gw3583 committed Sep 11, 2017
   b0ff1e6

3. Move MaskBounds into the ClipSources (from the MaskCacheInfo struct).

   

   gw3583 committed Sep 11, 2017
   55ff4d4

4. Move remaining mask cache code into ClipSources, and simplify it. …

   We no longer need to copy the border sources etc into the mask
   cache structures - they can be referenced directly from the clip sources.
   
   We also use a separate GPU cache handle for each clip now, so the
   ClipAddressRange code is no longer needed. This is possible since
   we use the GpuCache now, which doesn't need to allocate space
   during initialization.
   
   This also simplifies the code in the clip batcher that adds
   clip instances to the render targets.
   
   Add support for multiple image masks (a by-product of removing
   the init step of the mask cache code).

   

   gw3583 committed Sep 11, 2017

   Loading status checks…
   fe7444e

5. Switch handles to use tuples in clip.rs

   

   gw3583 committed Sep 11, 2017

   Loading status checks…
   e1ef408