Alpha Vertex Blend Toggle

[DoobesURU]

Adds a per-layer toggle just below the opacity slider to use the Alpha VCol values and blend the texture. Still needs sanity checks.

[DoobesURU]

Just curious if we need anything else added/subtracted from this to get 'er out the door or if the approach is too troublesome.

[Hoikas]

I wanted to spend some time trying to understand how all this works and if there's a better way to expose what's going in.

[DoobesURU]

I wanted to spend some time trying to understand how all this works and if there's a better way to expose what's going in.

Ah, I understand. Like I had said before, the AlphaBlends are an odd bit of business.

[DoobesURU]

Just to revive this discussion, perhaps it'd be better to use the method that (eep) PyPRP utilized, ie when there's an "Alpha" vertex color, it's used on every layer after the first? That way, it's not quite as exposed as a direct toggle, but the downside would be the end user would lose a bit of control as to which textures would receive the alpha.

Unless maybe we tie it to the existing texture_slot.use_map_alpha toggle? And anything with that on plus the Alpha VCol would get the blending?