Do you get any errors on the console? What is the code for the entire shader look like?
Looking at the screenshot, I think the issue is that you do not have a texture called reflectTex defined as a uniform in the shader, or if it is defined then it probably isn’t assigned to a texture. This is probably why it is just black, since Godot cannot access the texture.
That said, I’m not really experienced with shader code, so please take this with a grain of salt.
Hopefully this helps :smile:
