Chapter 20. Fast Third-Order Texture Filtering
Christian SiggETH Zurich
Markus HadwigerVRVis Research Center
Current programmable graphics hardware makes it possible to implement general convolution filters in fragment shaders for high-quality texture filtering, such as cubic filters (Bjorke 2004). However, several shortcomings are usually associated with these approaches: the need to perform many texture lookups and the inability to antialias lookups with mipmaps, in particular. We address these issues in this chapter for filtering with a cubic B-spline kernel and its first and second derivatives in one, two, and three dimensions.
The major performance bottleneck of higher-order filters is the large number of input texture samples that are required, ...
Get GPU Gems 2: Programming Techniques for High-Performance Graphics and General-Purpose Computation now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
