Hi All,
I want to use a simple lerp to split out two constant values on my material. I want to have specific Metallic, Spec and Roughness according to a black and white alpha image, but i get an error every time. It should be simple no? Anyone know why am I getting this error and how do i get around it?
Thx
Because you’re plugging float3 into float. The last pin is alpha.
Can you elaborate? I don’t know what that means.
Yes, you should plug only one of the channel
Using a texture for a single black & white mask means that you have that same mask on the three channels
You should take a look at some channel packing techniques so you could save some texture memory using the 3 (or 4) channels as individual masks
The last pin on the Texture Sample node is alpha. You’re using the entire image as alpha.
The details are somewhere in the middle of this doc, search for The TextureSample expression outputs:
Ahhhhh, that makes sense now! Thanks for the help.
