1. A variable resolution virtual reality display system comprising at least one display viewable by a user and comprising a plurality of display pixels, wherein said plurality of display pixels is partitioned into at least two display regions; wherein each display region of said at least two display regions is partitioned into a grid of grid elements, each grid element comprising one or more display pixels; at least two of said at least two display regions have different ratios of display pixels per grid element; a 3D model of a scene; a scene renderer coupled to said at least one display, to said at least two display regions, and to said 3D model, wherein said scene renderer calculates a 2D projection of said 3D model onto said grid of grid elements of each of said at least two display regions, to form a grid element value for each grid element; for each grid element, assigns a pixel value to said one or more display pixels associated with said grid element based on said grid element value of said grid element.