Never mind, I should have just clicked on that rather than thinking it was a repository name.
I am able to compile your version and run it and the output looks correct. Changing the plot line to this: printf ("plot [x=%g:%g] '-' with linespoints ls 1\n", -width*0.5, width*0.5); does make it work better, especially for subsample=0, by making the range stay fixed. Also if you run it on an older gnuplot that does not understand "pi" you get a lot of warning messages on stderr. It would help a *lot* if you added the pulldown to change the type of filter to the scale demo, so I would recommend adding those patches as well. Being able to directly compare to NEAREST and BILINEAR helps a lot with debugging filters. As is I was only able to confirm the handling of subsample==0 was correct by typing '8' into the subsample field to get a hi-res filter. subsample=1 produces a quite visible shift that I think is a good indication the sampling locations will need to be fixed. On Wed, Apr 13, 2016 at 7:24 AM, Bill Spitzak <spit...@gmail.com> wrote: > On 04/12/2016 01:55 PM, Søren Sandmann wrote: > > This series is available as a git repository here: >> >> https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master >> > > Not having much luck with that url: > > fatal: repository ' > https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master/' > not found > >
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