Commits on Nov 22, 2018

1. Make reftest failure messages more useful.

   

   gw3583 committed Nov 22, 2018
   0eeabbb

2. Make animation example more useful for picture caching debugging.

   

   gw3583 committed Nov 22, 2018
   0870bd8

3. Add is_image_dirty to check if an image was updated.

   

   gw3583 committed Nov 22, 2018
   e52ba83

4. Support using the instance rect as the source for stretch size.

   

   gw3583 committed Nov 22, 2018
   a521a1d

5. Support not having per-segment rects.

   

   gw3583 committed Nov 22, 2018
   602151d

6. Add method to get float value from property id.

   

   gw3583 committed Nov 22, 2018
   83e4c3c

7. Picture caching support, part 1 (of 2). …

   This patch introduces a picture composite mode that caches the
   surface in a grid of tiles in the texture cache. This is enabled
   by setting the picture composite mode to PictureCompositeMode::TileCache.
   
   Basic overview:
    * During initial picture traversal, any tile caches encountered
      are pushed / popped onto the PictureUpdateState stack.
    * If a tile cache is present, and if the transforms have changed
      since last frame build, then the primitive instances are walked,
      mapping each prim instance to a set of tiles in the cache. This
      allows dependencies for each tile (transforms, images, animated
      property bindings etc) to be set. Although this does involve an
      extra pass of primitive instances, it's only used when the tile
      cache mappings (the relative transforms) have changed, so it's
      done quite rarely. In addition, in the future we can move much
      of the second primitive traversal (clip chain building) etc to
      also happen here, which will mean that doesn't get done each
      frame build.
    * During prim prepare, a picture with tile cache enabled checks
      the dependencies on each tile, to see if it needs to be invalidated.
      It builds a dirty rect that is the union of the set of dirty
      tiles for this picture. Right now, we support only a single
      dirty rect for simplicity, but this can easily be expanded in
      the future to support a number of regions as required. This
      dirty rect is then passed via the PictureContext to any child
      primitives, and is used as the culling rect for primitive, clip
      mask and child picture allocations.
    * The picture preparation step also maintains a list of texture
      cache handles per tile, and records a series of blit commands
      for the renderer to execute after drawing the picture. These
      blits are executed to cache the picture output in texture
      cache tiles.
    * On subsequent frames, if the tile(s) are not invalid, they are
      drawn as a series of images with the brush_image shader.

   

   gw3583 committed Nov 22, 2018
   7c3453f

8. Address review comments.

   

   gw3583 committed Nov 22, 2018
   e9ac545

9. Address some more review comments

   

   gw3583 committed Nov 22, 2018
   ea5f781

10. Rebase on recent opacity bindings change.

    

    gw3583 committed Nov 22, 2018

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