When it comes to VR, NVIDIA has two SMP-powered technologies that they are making available to developers. The first, dubbed Single Pass Stereo, is essentially the full implementation of the above VR scenario. Besides using SMP to reproject the scene geometry across multiple viewpoints and viewports, Single Pass Stereo also encompasses optimizations at the scene submission and driver/OS stage. In this case, developers using Single Pass Stereo need only submit the scene once, and the driver will take care of setting up the second instance for the second eye. Maxwell 2 already supported the application-side optimizations, as the CPU benefits of the scene submission optimization alone can be quite significant, but that architecture still required the GPU to setup the geometry twice. However with Pascal this has been bundled with SMP so that not only is a scene only submitted to the driver once, but the GPU also only has to setup the geometry once.
The other VR-centric technology being exposed to developers is what NVIDIA calls Lens Matched Shading, and this is one of those more novel uses where SMP’s geometry reprojection can be used to avoid pixel shading work farther down the line. Lens Matched Shading is based around the physical properties of the lenses in a VR headset, which because they warp the view coming out of them, requires the OLED screen in a VR headset to be fed an oppositely warped view. In practice, Lens Matched Shading is the successor to NVIDIA’s earlier Multi-Res Shading technology for Maxwell 2, which tried something similar within the greater limitations of the Maxwell 2 architecture.
außer man will den knüppel zwischen den beinen haben. hrhr
