Implement two-argument atan in public SkSL, improve GM
This completes all of the "Angle and Trigonometry Functions"
Made the graphs larger in the GM, and laid them out to make better use
of space. Also changed how the shaders are assembled to support
two-argument functions (at least partially).
Bug: skia:10913
Change-Id: I3ae6288f76fb9b3200c843595b065a6afbf92230
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/334416
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
8 files changed