Add onPrePrepareDraws & createProgramInfo methods to GrDrawVerticesOp (take 2)
This CL also incidentally adds:
1) a GrMeshDrawOp::Target 'outputView' virtual and switches GrOpFlushState over to overriding it.
2) a createProgramInfo helper to GrSimpleMeshDrawOpHelper
Bug: skia:9455
Change-Id: I88ce51c585b1458ee79a9aaa7024190e9f19198c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/274506
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
23 files changed