Remove GrBlendFragmentProcessor::Behavior::kComposeTwo.
Most uses can just use kComposeOne because the input colors to the
children are not used. However, SkShaders::Blend() cannot. Lift the
compose-two behavior to a new helper,
GrFragmentProcessor::MakeInputOpaqueAndPostApplyAlpha, and use that
in SkShaders::Blend().
Bug: skia:10457
Change-Id: I8ce8a26db41e6a9d7dc28e236290827233a3d07b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/425459
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
8 files changed