Add SkRuntimeEffect::makeImage()

Allows creation of an image directly from a RTE. Caller provides the
effect input bindings, image info for the image, and optional local
matrix.

The info's alpha type and colorspace are tags for the output image. No
alpha type or color space conversions are applied to the output of RTE.

CPU does not yet support making kUnpremul images.

Bug: chromium:1151490

Change-Id: I69babc9dbbce4431d756cd7a3eef4753e727d6fe
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/357284
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
8 files changed