- add uniform_color_dst stage
- add stageupdate option for shaders
More cases we could try to handle in the future:
- perspective (not hard)
- mipmaps (plumbing is there, need to re-call bitmapstate helper)
Before
10025.60 drawAtlas_3 8888
6636.06 drawAtlas_2 8888
After
3566.18 drawAtlas_3 8888
2585.83 ? drawAtlas_2 8888
Change-Id: I656231324c0390029f6d08941c4f9d11ccdb8e87
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/233061
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>