Runtime effects: Allow null children
Two related things:
1) SkRuntimeEffect will allow null child shaders when calling
makeshader. This will produce a GrSkSLFP with null FP children.
Fix some code that assumed that children were non-null.
2) Change the input color passed to any children to be the SkSLFP's
input color, rather than the default (white). This lets nullptr
children in runtime effect have the desired behavior (they are the
paint color or similar, depending on context).
Change-Id: Iabffc50b0a893a56403c5240f32a5da6a88d81f6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301980
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
4 files changed