S3 Graphics Co., Ltd.

Eric Young

Roger Swanson

Daniel Hung

Graphic processor compares z-buffer values of 3D objects to detect and mark interpenetrating pixels. Tag buffer stores marked values for antialiasing effectively by over-sampling, area-based, blending, alpha edge or other pixel-processing scheme. Performance is improved by selectively antialiasing at edges and/or interpenetrations. Cost is reduced by leveraging z-buffer storage therefor. Super-sampling antialiasing reduces sampling of select interpenetration elements, thereby avoiding processing entire image.

z-buffer based interpenetrating object detection for antialiasing

Graphic processor compares z-buffer values of 3D objects to detect and mark interpenetrating pixels. Tag buffer stores marked values for antialiazing effectively by over-sampling, area-based, blending, alpha edge or other pixel-processing scheme. Performance is improved by selectively antialiazing at edges and/or interpenetrations. Cost is reduced by leveraging z-buffer storage therefor. Super-sampling antialiazing reduces sampling of select interpenetration elements, thereby avoiding processing entire image.

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San Jose, CA, United States of America

Eric Young