US Patent 10388063 Variable rate shading based on temporal reprojection

Methods and devices for performing variable rate shading in graphics processing are described. A transformation pass can be performed over a current frame associate a current pixel in a current frame with a previous pixel in a previous frame. A previous fragment, including the previous pixel, in the previous frame can be analyzed to determine whether the previous fragment includes one or more areas of frequency detail achieving a threshold. A variable shading rate to apply to a current fragment including the current pixel can be determined based on analyzing the previous fragment.