Re: [PATCH pixman 02/11] pixman-filter: Correct Simpsons integration
Bill Spitzak <[email protected]>
| Newsgroups | gmane.comp.lib.cairo,gmane.comp.graphics.pixman |
|---|---|
| Message-ID | <[email protected]> |
Actually the previous version did 1,2,6,6...6,6,2,1. Since it divided by 3 it produced almost 2x the correct integration, though this was fixed by the normalization later. It also did not do Simpsons integration, instead it was much more like adding evenly-spaced samples. On 09/10/2014 07:01 PM, Bill Spitzak wrote: > Samples are multiplied in a 1,4,2,4,2,4,1 pattern, previous version > did 1,2,4,4,4,2,1. > > I also reduced the number of samples greatly as there is no > numerical difference with the filter functions. -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo