Stacking texture modules ignores texture alpha.

[micha2it]

Having material that takes a grout texture and a brick texture, where brick texture has alpha, so grout texture can be seen through it. Current behaviour ignores multiple textures and just renders alpha as white for the topmost texture.

Code:

Result (expected to see grout texture through space between bricks):

Grout texture:

Brick texture:

[hmans]

At the moment, the second Texture module will overwrite the color of the first. The way to do this is to put the brick texture into its own layer, and give that layer the correct blend mode. This functionality is WIP (only a few blend modes are currently implemented) and, just like most of the rest of Material Composer, undocumented. I will try to set up a codesandbox with an example soon (I'm playing catch-up with these tasks at the moment, and would like to ask you for a little more patience.)