A method of and system for rendering an image

摘要

This invention relates generally to a method of and system for rendering images. In particular, to a method of rendering an image containing a plurality of opaque and at least partially transparent layers listed in a layer tree. The plurality of layers of a layer tree of an image are separated into a first list of opaque layers and a second list of at least partially transparent layers. Each layer is assigned an index number and the lists are sorted with reference to the assigned index numbers. It is determined whether or not each layer requires rendering and a mask is applied to each layer or certain layers to be rendered if they are overlapped by at least one opaque layer. Layers to be rendered are rendered in order based on their position in their respective sorted list.