Via Technologies, Inc.

Jiangming Xu

Liang Li

John Wakefield Brothers

Boris Prokopenko

Yuanfeng Wang

Wen-Chung Chen

Provided are methods, systems and graphics processing apparatus, for improving graphics system performance using an adaptive missing table in a multiple cache scheme, such that the table size is dependent on the completeness of the graphics data.

Texture cache control using an adaptive missing data table in a multiple cache computer graphics environment

The computer graphics system is configured to improve the performance of a stencil shadow volume method for rendering shadows. The apparatus and methods utilize a combination of compressed and uncompressed stencil buffers in coordination with compressed and uncompressed depth data buffers. An uncompressed stencil buffer is capable of storing stencil shadow volume data for each pixel and a compressed stencil buffer is capable of storing stencil shadow volume data for a group of pixels. The compressed stencil buffer is utilized with a compressed stencil buffer cache to perform a stencil shadow volume operation more efficiently than present methods.

Apparatus and method of an improved stencil shadow volume operation

The computer graphics system is configured to generate a shadow effect with a stencil shadow volume method using a combination of compressed and uncompressed stencil buffers in coordination with compressed and uncompressed depth data buffers. An uncompressed stencil buffer is capable of storing stencil shadow volume data for each pixel and a compressed stencil buffer is capable of storing stencil shadow volume data for a group of pixels.

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San Jose, CA, United States of America

Jiangming Xu