03bd418d16
Issue here is that "show diffuse" option does not respect its intended purpose which is to be used only for masking. There are a couple of caveats here: Dyntopo and multires -always- have mask data enabled, and thus as soon as one goes to dyntopo mode or adds a multires modifier he would get the default grey color instead. Matcaps would break when nodes asked for a diffuse material color (this was broken before too). Solved by adding global material state for when matcaps are enabled. Also matcaps don't always played well with VBOs off. Added a few more missing updates for mask operators to notify show_diffuse property as changed. This was also needed on rebuilding dyntopo pbvh. Also make zero mask color duller again after artist feedback.