Depth3D or Display Depth -> How to get Side by Side Bitmap + Depthmap ?

Hi !
I would like to have in the result :
Left side : Bitmap image
Right side : Depth map ( Grayscale image ).

I tried to use DisplayDepth and Depth3D shaders , none of them have this feature.
I also tried to trick by using the 2 shaders with a Mask between using a custom UImask.png (50/50 black white side by side), it doesn't work.


Maybe in the code ? but i'm not good enough to understand it yet.
Need help ! Thanks !