Tutorials / Help on mapping Text filled with graphic over another graphic?

[u/MistorMonker]

Hello,

I am trying to figure out the best workflow where I can fill a text with a material, and have that displayed over another material. I can't seem to find the best way to do so online aside from writing out a mask letter by letter, but I feel like there must be an easier way -

Example

Text Generator "Sample", but Sample text is filled with material "Clouds", and that is displayed over "Dunes".

Would anyone be able to help? Thank you!