OpenXR Toolkit (upscaling, world scale, hand tracking...) - Release thread

[mbucchia]

Lol I mean to observe that HAM does make a difference in perf! There was a time it did not:

Monoscopic Virtual Reality (VR)

The hidden area mesh is typically used for stenciling (meaning create a region where nothing is rendered to), in the case of VR one of the reason you want to do that is to avoid rendering unnecessary pixels (meaning less invocation of the pixel shaders) that are not visible due to the lens distortion. However, I’ve observed that if I make OpenXR Toolkit return a hidden area mesh that covers one entire eye (meaning don’t render anything for that eye), there is nothing rendered indeed, but the pe…

However, I’ve observed that if I make OpenXR Toolkit return a hidden area mesh that covers one entire eye (meaning don’t render anything for that eye), there is nothing rendered indeed, but the performance is unchanged. This would indicate that somehow the stenciling isn’t correctly applied, and pixel shaders are still called for these pixels, even though they are discarded.

Fortunately it sounds like this issue has been fixed in SU10!