Yank GrPathTessellationShader out of PatchTessellators
The tessellators are now agnostic of the shader class, which makes
them mostly usable by Graphite now. Also moves the code for writing
the middle-out vertex and index buffers into the PatchTessellators,
which makes sense since they also write the instance buffers.
Bug: skia:12524
Change-Id: I6c415645e389e056c0db1d93663b1b295d6b4535
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469631
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
15 files changed