Geometry processing of digital video models and images

摘要

Method, apparatus and computer program products for transforming from model to screen coordinates by assigning specified subsets of the plurality of parallel processing elements respective model space geometric primitives. The respective specified subsets of the plurality of parallel processing elements are then provided a plurality of transformation matrices associated with respective model space geometric primitives. A unified transformation matrix for each primitive is then produced from the plurality of transformation matrices associated with each particular model space geometric primitive. The resulting unified transformation matrices are then applied to said geometric primitives by the processing elements to translate the geometric primitive from model coordinates to screen coordinates. The plurality of parallel processors may receive one of the plurality of transformation matrices and evaluate the received transformation matrix to determine if the received transformation matrix corresponds to the respective geometric primitive associated with the specified subset of the plurality of parallel processors. The received transformation matrix is concatenated with any previously received transformation matrices corresponding to the respective geometric primitive associated with the specified subset of the plurality of parallel processors if the received transformation matrix corresponds to the respective geometric primitive associated with the subset of the plurality of parallel processors. This process may be repeated until all geometric primitives for a region of a screen image have been transformed from model to screen coordinates.