1. A method of displaying an image, comprising: providing a first graphics texture comprising a first feature having an edge with a second feature; providing a second graphics texture; using a first graphics texture in combination with the second graphics texture to apply a texture to a graphics primitive or primitives representing the image to be displayed in order to display the image; and displaying the graphics primitive or primitives representing the image having the applied texture to display the image; wherein the second graphics texture and the combining operation are configured such that using the first graphics texture in combination with the second texture causes the first feature to be bordered, in the displayed image, by a border region that represents a border to that feature, wherein the first feature is perceived to be in a different horizontal or vertical plane from the second feature.