08c1f5bf33
This patch uses the sampling method described in "A Low Distortion Map Between Triangle and Square" by Eric Heitz. The benefit is avoiding sqrt in the calculation, which could be cheaper on some architectures, and the result is more even sampling across the triangle surface. Based on ideas from https://pharr.org/matt/blog/2019/02/27/triangle-sampling-1.html https://pharr.org/matt/blog/2019/03/13/triangle-sampling-1.5.html Reviewed By: Brecht Van Lommel Differential Revision: https://developer.blender.org/D6566