YORO Increases VR Frame Rates By Rendering One Eye & Synthesizing The Other
Researchers developed a technique to increase the frame rate of VR by synthesizing the second eye's view instead of rendering it.
The paper is titled "You Only Render Once: Enhancing Energy and Computation Efficiency of Mobile Virtual Reality", and it comes from two researchers from University of California San Diego, two from University of Colorado Denver, one from University of Nebraska–Lincoln, and one from Guangdong University of Technology.
Stereoscopic rendering - the need to render a separate view for each eye - is one of the primary reasons that VR games are more difficult to run than flatscreen, leading to their lower relative graphical fidelity. This makes VR less appealing to many mainstream gamers.
While standalone VR headsets like Quests can optimize the CPU draw calls of stereo rendering, through a technique called Single Pass Stereo, the GPU still has to render both eyes, including the expensive per-pixel shading and memory overhead.
You Only Render Once (YORO) is a fascinating new approach. It starts by rendering one eye, as usual. But instead of rendering the other eye's view at all, it efficiently synthesizes it through two stages: Reprojection and Patching.
