OpenGL uses a depth range between -1 and 1, which is then normalized.
Metal & Vulkan uses a depth range between 0 and 1, which is already normalized.
The final plan would be to default to a depth range between 0 and 1, but
for now the depth ranges are retargetted so they won't be clipped away.
This solves the next issues for users:
- Navigate control will be rendered correctly
- Ortographic view clipping artifacts
Jeroen Bakker