Abstract: A method of rendering an image is disclosed. A plurality of non-overlapping regions of the image is received, each region being associated with a fill compositing stack comprising a plurality of levels to be composited to determine color data of said region, each level being defined by a compositing operation and a color operand. Equivalent ones of the compositing stacks are identified, the equivalent compositing stacks being defined by equivalent sets of graphical commands applied to different color operands. Regions associated with the equivalent compositing stacks are selected. Pixels corresponding to the selected regions are combined into a data structure. The pixels are concurrently rendered using the data structure to render the image.

Abstract: A method of rendering an image. A region of the image having pixels suitable for parallel processing is determined. A multi-threaded rendering unit is assigned to render the determined region using a plurality of threads. A reference, for at least one of the threads rendering a pixel on a scan line of the determined region, to another of the threads rendering a first pixel on said scan line is created. The determined region is rendered by the plurality of threads using the created reference. The image is rendered by combining pixels of the rendered determined region, based on corresponding ones of said threads of the multi-threaded rendering unit, with an output of rendering at least one further region.

Abstract: A method of dithering pixels of a graphical representation is described, the method comprising the steps of receiving the graphical representation which comprises a plurality of regions each being characterized by an attribute type associated with content of the region; selecting, from a group of processors comprising at least a central processing unit (CPU) and a graphics processing unit (GPU), at least one processor to dither pixels of the regions depending upon corresponding sizes and attribute types of the regions; and dithering pixels of the graphical representation using the selected processor.

Abstract: A method of dithering pixels of a graphical representation is described, the method comprising the steps of receiving the graphical representation which comprises a plurality of regions each being characterised by an attribute type associated with content of the region; selecting, from a group of processors comprising at least a central processing unit (CPU) and a graphics processing unit (GPU), at least one processor to dither pixels of the regions depending upon corresponding sizes and attribute types of the regions; and dithering pixels of the graphical representation using the selected processor.

Abstract: A method of rendering an image using a number of threads, by receiving edge data for the image comprising edges identified by indices, each edge having edge scan line crossing coordinates, arranging the coordinates into partitions indexed by the indices to form a data structure that is randomly accessible by a coordinate of a portion of the image; each partition comprising a list of edge scan line crossing coordinates associated with an edge that is identified by the edge index indexing the partition, and rendering the portions of the image concurrently, using corresponding threads by identifying, by randomly accessing a partition in the indexing data structure using a coordinate of said portion in the image, at least one edge in the indexing data structure associated with said portion of the image.

Abstract: A method of rendering an image is disclosed. A plurality of non-overlapping regions of the image is received, each region being associated with a fill compositing stack comprising a plurality of levels to be composited to determine colour data of said region, each level being defined by a compositing operation and a colour operand. Equivalent ones of the compositing stacks are identified, the equivalent compositing stacks being defined by equivalent sets of graphical commands applied to different colour operands. Regions associated with the equivalent compositing stacks are selected. Pixels corresponding to the selected regions are combined into a data structure. The pixels are concurrently rendered using the data structure to render the image.

Abstract: A method of rendering an image. A region of the image having pixels suitable for parallel processing is determined. A multi-threaded rendering unit is assigned to render the determined region using a plurality of threads. A reference, for at least one of the threads rendering a pixel on a scan line of the determined region, to another of the threads rendering a first pixel on said scan line is created. The determined region is rendered by the plurality of threads using the created reference. The image is rendered by combining pixels of the rendered determined region, based on corresponding ones of said threads of the multi-threaded rendering unit, with an output of rendering at least one further region.

Abstract: A method of rendering an image using a number of threads, by receiving edge data for the image comprising edges identified by indices, each edge having edge scan line crossing coordinates, arranging the coordinates into partitions indexed by the indices to form a data structure that is randomly accessible by a coordinate of a portion of the image; each partition comprising a list of edge scan line crossing coordinates associated with an edge that is identified by the edge index indexing the partition, and rendering the portions of the image concurrently, using corresponding threads by identifying, by randomly accessing a partition in the indexing data structure using a coordinate of said portion in the image, at least one edge in the indexing data structure associated with said portion of the image