Patent ID: 6359630
Filing Date: 2002-03-19
Classification: G06T,G09G

Abstract:
A method for preparing graphical data for display with a computer graphics system, the method comprising:testing vertices of a geometric primitive against a clipping boundary, wherein the geometric primitive has one or more vertices; setting bits in one or more clip registers according to said testing the vertices of the geometric primitive against the clipping boundary, wherein the one or more clip registers comprise one clip register for each of the one or more vertices of the geometric primitive; clip testing the geometric primitive using the bits in the one or more clip registers; trivially accepting the geometric primitive for displaying if said clip testing concludes that the geometric primitive is entirely inside the clipping boundary; trivially rejecting the geometric primitive for displaying if said clip testing concludes that the geometric primitive is entirely outside the clipping boundary; sending an interrupt if said clip testing concludes that the geometric primitive is not entirely inside and not entirely outside the clipping boundary; and clipping the geometric primitive if said clip testing concludes that the geometric primitive is not entirely inside and not entirely outside the clipping boundary.