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Method and apparatus for video graphics antialiasing with memory overflow optimization
Method and apparatus for video graphics antialiasing with memory overflow optimization
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机译：具有存储器溢出优化的视频图形抗锯齿的方法和装置
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摘要
A method and apparatus for antialiasing in a video graphics system is accomplished by determining if a pixel sample set, which results from oversampling, can be reduced to a compressed sample set, where the compressed sample set contains information describing a corresponding pixel. When the pixel sample set can be reduced to a compressed sample set, the compressed sample set is stored in a frame buffer at a location corresponding to the particular pixel that the sample set describes. When the pixel sample set cannot be reduced to a compressed sample set, a pointer is stored at the frame buffer location corresponding to the particular pixel. The pointer points to a selected address in a sample memory at which the complete sample set for the pixel is stored. When the sample memory reaches capacity, storage of the complete sample set in the sample memory is reduced to a subset of the complete set, allowing all pixels in each frame to be accommodated, but removing the loss-less characteristic of the compression technique.
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