Fix some shadow issues.
* Clamp path polygon points to nearest 1/16th of a pixel to help
with floating point issues.
* Added check for multiple contour paths.
* Return empty SkVertices for certain degenerate cases to avoid
unnecessary blurs.
* Check iteration count in SkOffsetPolygon to avoid infinite loops.
* Add new tests to verify these.
Bug: skia:
Change-Id: Ie6ad48d2504e065dcc822609d369f90c56ef3ad3
Reviewed-on: https://skia-review.googlesource.com/136701
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
4 files changed