Hi pablocael,
Yes, you can do this in SRWorks now. Please try the following steps:
[in Attached Pic 1]
1. Place a quad under "[ViveSR]->DaulCamera(head)->TrackedCamera(Left)->Anchor(Left)" (As a sibling to ImagePlane-left, and also, check the layer is still "Default")
2. Make the quad local position=(0,0,2), scale=(4.57, 3.42, 1). (I believe that is what you mentioned "does not have the same proportion")
3. Use CameraDepthMaskMaterial, Color Write to "None" (Set to "All" for visualization)
[in Attached Pic 2]
4. When running with enabling depth processing, check the toggle box "Update Depth Material"
5. You can try to toggle some other settings in the blue squares
6. There you go :smileyhappy: !
Cheers