How can I combine a color texture with a b&w texture and get color?

[Hamesh81]

The picture above shows exactly what I’m trying to do. Basically I’m working on a skin shader and have one color texture for the skin, and over the top of that am applying a black and white detail texture. I then need these two to combine/blend similar to how the Photoshop Luminance or Soft Light blend modes work, to give the third pic below. So the first texture is darkened by the greys and blacks of the second, but the color of the first texture is preserved, if that makes sense. All whites are ignored. This is also similar to what the builtin Diffuse Detail shader does except it would need to work with transparency as well.

At the moment I’m getting this by changing the color of the second texture. This is NOT practical because for many skin tones a color would have to be selected manually each time. I have looked at and taken apart many different shaders but I still can’t get close to this. Any ideas how I could do it?

[Moor]

make a b&w texture as normal map and place both in the Bumped Diffuse shader

[Hamesh81]

I worked it out! Once you setup the two textures to be layered over the top of the other (see the builtin in Decal shader if you don’t know how), for the greyscale texture you simply multiple it by the color of the other texture and… tadaa you have an overlayed greyscale image with the color of the colored texture! Hope this helps someone out