How render texture works?

Unity Engine
1

Im trying to use render texture in a second camera with culling mask for UI.

The idea is to make some kin of blurry shadow for my UI.

the problem is that my render texture don’t get any data renderer from my UI at all. i did some test and the render texture works but not with Canvas elements.

So, how can i use the render texture for my canvas UI?

2

i still can not make it to work.

any help?

3

no luck yet… i can’t render my canvas in render texture!