Surface Blending - Unexpected pinching

 From:  Michael Gibson
1546.13 In reply to 1546.12 
Hi Steve, yup that is definitely the sweeper thinking that it got close enough and not adding in enough refinement in that area.

This part tends to be a difficult thing to balance because if the sweeper checks for accuracy in too many places it will cause it to take a really long time to complete in more complex cases. But if it doesn't check enough it can let things like this by.

I've added this to my chunk of sweep-related work to see if I can fix it up.

- Michael