Render an object into texture space

Question

How can you render an object into texture space in Unreal Engine?

An example:

• uv coordinates becomes the geometry in uv space.
• The xyz coordiates of the geometry becomes the color components of the texture target.

This would then require me to specify that the render target is unbounded float rgb.

I would of course provide a geometry with non-overlapping uv-coordinates etc.

Thanks for any feedback.