ccpr: Indicate path fill type by winding direction of cover triangles

Draws the cover geometry for "nonzero" paths with clockwise triangles,
and "even/odd" paths with counterclockwise. This will allow us to use
a double-sided stencil function to resolve coverage in MSAA mode.

Bug: skia:
Change-Id: I067acbe9a466f97f67223d27fea28d758173d25f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209232
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2 files changed