Demo of reverse depth buffer

[prideout]

Description

There are no demos that exercise Cory's new reversed Z functionality.

Solution

One idea is forking or enhancing the existing Logarithmic Depth Buffer demo.

Alternatives

The logarithmic depth buffer demo is super cool but it might be be more useful to have a demo that exercises reversed Z in combination with other features, like shadow mapping, SSAO, and raycaster picking. This would show that all the pieces still play well together.

Additional context

#29445
#29579