Custom vertex data to shader

Question

I'm using ArrayMesh to generate a mesh, but now I would like to pass some custom data only available while generating the mesh into a custom shader. ArrayMesh only provides the default position, color, uv, etc. But i would like to pass something other than these values into the shader (namely a single int). From my OpenGL experience, I recall you could basically dump whatever data you need into an AttribArray and send it to the shader pipeline. Is anything like this possible within godot?

Answer 1

Uniforms are what you're looking for.
You can then access your parameters through code with setshaderparam().

Comments

Sadly uniforms are an identical value per material instance. What I need is a way to pass custom vertex specific data to the shader, like the position, normal or UV.