Add custom glue code for Graphite runtime shaders.
At present, the custom glue code just emits a function that behaves
the same as `sk_runtime_placeholder` (solid magenta). It does
generate a standalone function in the preamble, though, and correctly
passes the local-coords and input color to it.
Change-Id: I0832c406f2273630f853ace420120deb0b7bd745
Bug: skia:13405
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/554080
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
3 files changed
