Question Rendering from a material to a RenderTexture?

I have a texture which I'm using as a background of my UI Toolkit menu.
I would like to animate the tiling of this texture and apply various other graphical effects which, performance-wise, would make the most sense to do in a material shader. UI Builder also has built-in support for the use of RenderTextures as background images, but how does one go about rendering from a material to a RenderTexture?

 

Can’t you just use a normal material with UI Builder?

Rendering to a rendertexture seems like a waste if all you want to do is simple stuff like that.

In any case, look into Custom Rendertextures https://docs.unity3d.com/Manual/class-CustomRenderTexture.html

 

How? I'm not seeing any option to do so. Only Texture, RenderTexture, Sprite and Vector

 

I don’t actually know, it was an honest question.

I haven’t really used UIToolkit, it seems like a terrible, ill-conceived UI solution to me, but I was expecting it would have the capability of allowing you to render a poly with a shader of your choosing, but I guess not.