Spotlight to Reveal a Different Background- Need a nudge in the right direction

Hello Unity Community,

I have been playing around with shaders trying to achieve a certain look. I am not a programmer of any kind so jumping into Shaderlab has been...eye ruining; but I am committed.

Basically what I have at the moment is a shader material with two textures. A spotlight does reveal the bottom texture but the top texture is still very visible. I would love to have the light completely fade out the top texture so the bottom one is clearly seen. I've seen plenty of code that uses blending but I don't think it will work for what I want. I am not asking for someone to write me code but to point me in the right direction. The hardest part with trying to figure this out is not knowing what options are available to search for.

** The example file attached is merely for testing. I promise I am not mashing those two styles together.

 

Look into how alphablending works. You're basically trying to alphablend between two textures, based on a light value. You take that value and multiply it by one of the textures, then you multiply the other texture by 1.0 minus the light value, then add those two numbers together.

 

Awesome! Thank you so much for your help. So super appreciated!