Add support for passing an inputFP to SkColorFilter objects.
The existing two-argument `asFragmentProcessor` method has been
supplanted by a new three-argument API that also takes an input FP and
returns a GrFragmentProcessor::MakeResult. A helper method
`colorFilterAcceptsInputFP` has also been added; SkColorFilters
that have been updated to absorb an input FP must also override this
method to return `true`.
Calling the "wrong" `asFragmentProcessor` method is supported. If you
invoke the newer, input-FP-consuming method on an older ColorFilter,
we detect this, and RunInSeries is used to emulate this support. If you
invoke the no-input-FP method on a newer ColorFilter, nullptr is
automatically passed in for the input FP. All of these assistance
features are transitional only, and will be removed once we have
completed the migration to the new API.
This CL also migrates SkLumaColorFilter and SkColorFilter_Matrix to the
new API to exercise the new functionality.
Change-Id: I49f9d962c8c0003a5e27a9675150f6783d631141
Bug: skia:10217
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298507
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
7 files changed