To provide a method of accelerating rasterization of a start tile at a raster stage of a graphics pipeline.

The method includes a step of defining a window for clipping a produced image, and a step of receiving a graphics primitive for rasterizing at a raster stage of a graphics processor. The start tile having at least a partial cover range of the graphics primitive is determined by executing binary search relating to the window. The start tile includes a plurality of pixels. The raster stage rasterizes the graphics primitive by producing a plurality of adjacent tiles each having at least a partial cover range of the graphics primitive based on the start tile.