A display method using a display system according to claim 7 operable to display an image to a viewer, the method comprising: detecting an initial position and/or orientation of an image view, being an in-game camera view of a computer game; rendering foreground portions of an image according to the detected initial position and/or orientation, at an image display rate; rendering background portions of the image according to the detected initial position and/or orientation, at an image rendering rate lower than the image display rate; at the image display rate: (i) detecting (1030, 1060) a current position and/or orientation of the image view; (ii) re-projecting (1040, 1070) the background portions of a most recent image according to any differences between the initial position and/or orientation and the current position and/or orientation of the image view; and (iii) combining (1050, 1080) the foreground portions and the re-projected background portions to generate an image for display; in which: the step of rendering background portions comprises providing depth data indicating the image depth of one or more image features; and the step of re-projecting comprises: re-projecting the depth data; mapping the re-projected depth data to a coordinate system of the most recent image; and associating pixel data derived from the most recent image with the re-projected depth data, in which, for any pixel position at which re-projected depth data does not exist, depth data and pixel data derived from a previous image are used. detecting an initial position and/or orientation of an image view, being an in-game camera view of a computer game; rendering foreground portions of an image according to the detected initial position and/or orientation, at an image display rate; rendering background portions of the image according to the detected initial position and/or orientation, at an image rendering rate lower than the image display rate; at the image display rate: (i) detecting (1030, 1060) a current position and/or orientation of the image view; (ii) re-projecting (1040, 1070) the background portions of a most recent image according to any differences between the initial position and/or orientation and the current position and/or orientation of the image view; and (iii) combining (1050, 1080) the foreground portions and the re-projected background portions to generate an image for display; (i) detecting (1030, 1060) a current position and/or orientation of the image view; (ii) re-projecting (1040, 1070) the background portions of a most recent image according to any differences between the initial position and/or orientation and the current position and/or orientation of the image view; and (iii) combining (1050, 1080) the foreground portions and the re-projected background portions to generate an image for display; in which: the step of rendering background portions comprises providing depth data indicating the image depth of one or more image features; and the step of re-projecting comprises: re-projecting the depth data; mapping the re-projected depth data to a coordinate system of the most recent image; and associating pixel data derived from the most recent image with the re-projected depth data, in which, for any pixel position at which re-projected depth data does not exist, depth data and pixel data derived from a previous image are used. the step of rendering background portions comprises providing depth data indicating the image depth of one or more image features; and the step of re-projecting comprises: re-projecting the depth data; mapping the re-projected depth data to a coordinate system of the most recent image; and associating pixel data derived from the most recent image with the re-projected depth data, in which, for any pixel position at which re-projected depth data does not exist, depth data and pixel data derived from a previous image are used. re-projecting the depth data; mapping the re-projected depth data to a coordinate system of the most recent image; and associating pixel data derived from the most recent image with the re-projected depth data, in which, for any pixel position at which re-projected depth data does not exist, depth data and pixel data derived from a previous image are used.