Preview what is being rendered on a render texture

Hello!

I would like to leave a suggestion: with render textures we can make several incredible effects, but a big barrier for not using them very often is that we can’t see what is being rendered inside it.

It would be very useful if we had a node or a panel tab where we could check the texture output to debug before completing our effect.

This would help a lot in productivity, because when we do something wrong we need to erase and do it again.