hi guys
I was following shaders tutos trying to understand the complicated shadders world, I still have not got it of course, but I'm working on it.
Working on the mirror effect I have observed the following:

1- If you add the mirror effect to a model, all the models in the scene inherit / have the same mirror effect as well.
In both videos, only the glass contains such effect, notwithstanding the walls, the floor, etc., presents the mirror effect as well.

2- the mirror effact is only activated in the parts of the model exposed to the ambient light, sun / moon.

3- The objects exposed to the GG lights, do not present this effect, it does not matter if the lights are dynamic or static.

4- I only manage to reflect the shadow of the wizard, I have tried with mirrors since I want to reflect its face.

5- Something curious, the wizard reflects his shadow on the floor, but seems to be the T-pose of the char .

mirror effect test




mirror effect test1



3com

I'm also getting a bit nearer to mirror effect....