Modifications to GrTextureOp outsetting, edge equation code.

Factor out to its own function to be reused with perspective.

Avoid initial shuffles to fan order using nextCW and nextCCW helpers that
assume tri strip order.

Make sign test stay in 4f.

Use fmas.

Change-Id: I60cff205f6193c4e01ea84218812a663ce74038f
Reviewed-on: https://skia-review.googlesource.com/129175
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed