Dynamically adjusting a sample-to-pixel filter to compensate for the effects of negative lobes
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United States of America Patent
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Sep 12, 2006
Grant Date -
Jan 17, 2002
app pub date -
Dec 29, 2000
filing date -
Jan 11, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A graphics system comprises a graphics processor, a sample buffer, and a sample-to-pixel calculation unit. The graphics processor generates samples in response to received stream of graphics data. The sample buffer may be configured to store the samples. The sample-to-pixel calculation unit is programmable to generate a plurality of output pixels by filtering the rendered samples using a filter. A filter having negative lobes may be used. The graphics system computes a negativity value for a first frame. The negativity value measures an amount of pixel negativity in the first frame. In response to the negativity value being above a certain threshold, the graphics systems adjusts the filter function and/or filter support in order to reduce the negativity value for subsequent frames.
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