Blender Git Commit Log

Implement correct drawing of advanced Weight display features.

This adds existing behavior from calc_weightpaint_vert_array
that was missing from the new rendering code:

- No selected Vertex Group displays as a solid pink color.
- Zero weight displays as alert color depending on Options.
- Multipaint mode correctly displays collective weight.

In order to properly implement this variety, a data structure
holding all relevant parameters is introduced.

Reviewers: fclem, campbellbarton

Subscribers: jbakker

Differential Revision: https://developer.blender.org/D3722