Patent ID: 8743135

Claim:
A method of rendering a shape defined by a smooth curve in a graphics processing system, the method comprising: applying a graphics texture representing a curve corresponding to the curve defining the shape to at least one primitive to be rendered by sampling texture values in the texture for sampling positions within the at least one primitive; and using the sampled texture values to determine which side of the curve the sampling positions should be treated as being on; wherein: the graphics texture is configured such that all positions in the texture on one side of the curve that the texture represents will return a sampled texture value that is less than a selected threshold value and all positions in the texture on the other side of the curve will return a sampled texture value that is greater than the selected threshold value; and the method comprises: comparing the sampled texture values for the sampled sampling positions of the at least one primitive to the selected threshold texture value for the curve to determine which side of the curve the sampled sampling positions of the at least one primitive should be treated as being on; and wherein: the texture is configured such that the texture will represent the smooth curve most accurately when the texture is sampled using a particular, selected texture filtering process; and the method comprises: sampling the texture values in the texture using the particular, selected texture filtering process that the texture is configured for.