Hello, apologies if this has been answered, but I spent about 2 hours searching and could not find anything that addressed this question. I am fairly new to UE4 and learning fast, but have a lot of ignorance still.
I am trying to create a material that would have the option of allowing a logo to overlay an area of the texture. I have it all working, except that the area I want to overlay is white, and I want to use a black logo overlay. As a test, I basically made a black background TGA file with the logo in red, then used a Multiply with a constant (to allow it to be varied from 0 “off” to 1.0 full) and then run into a LERP on the alpha channel, and then into the base color node. I also tried this without the LERP and just running the multiply into the Opacity Mask, and it looks exactly the same, so either method seems to work. I just can’t find any info about how (or even if) its possible to mask any color other than black for the alpha/masking. I want to be able to have the logo/overlay be all black.
I’m open to other methods than this one, but I would prefer for now to keep it simple (if possible) and within the material itself. I eventually want to try to move some of these to a material function as well, but for now I’m just trying to learn as much as I can and understand how things like this can be accomplished. Thank you.