Blender Git Commit Log

Tweak for Speed vector calculus for Ztransp render layer; it used to mask
out moving transparent pixels by checking for alpha>0.95, now it also
checks the solid layer (if present), and if there's no solid face in a
pixel, the speed vector gets also added and used for transparent pixels.

This solves the 'ugly' hard outlines for vectorblur of moving hair.

Before:
http://www.blender.org/bf/h1.jpg
After:
http://www.blender.org/bf/h2.jpg