Changes

[[Multi-resolution shading]] renders different parts of the image with different resolutions to better match the [[pixel density ]] of a warped image. When a flat image is viewed from the lenses of an HMD, the image is distorted. The processor has to perform an additional task that "de-distort" or warps the image. The warp pass compresses the edges of the image, reducing pixels there. Multi-res shading renders a warped image directly, keeping full resolution in the center of image while reducing the resolution of the edges of the image.<ref name="GameWorks_VR_Site">https://developer.nvidia.com/virtual-reality-development</ref>