Generating subdivision surfaces on a graphics hardware with floating-point fragment shaders
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United States of America Patent
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Issued Date -
Feb 2, 2006
app pub date -
Jul 18, 2005
filing date -
Jul 30, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
One or more fragment programs are executed on a graphics processor to generate the vertices of a subdivision curve or subdivision surface (using an arbitrary subdivision scheme) into a floating point texture. A plurality of faces are simultaneously processed during each subdivision iteration by using a super buffer that contains the vertices, their neighbors, and information about each face. Following the subdivision iterations, the texture is mapped as a vertex array (or a readback is performed), and the subdivided faces are rendered as complex curves or surfaces.
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