Simplify perspective shadows to match future MD specs.
* For ambient we outset a constant amount around the perspective shape.
* For spot we compute the projection of the bounds from the light's
perspective, and from that compute a matrix to transform the path.
Bug: skia:7971
Change-Id: I7fffdd1446423956773d145ff4fae0a81602ad5b
Reviewed-on: https://skia-review.googlesource.com/150471
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
4 files changed