<div dir="ltr">Never mind, I should have just clicked on that rather than thinking it was a repository name.<div><br></div><div>I am able to compile your version and run it and the output looks correct.</div><div><br></div><div>Changing the plot line to this:</div><div><br></div><div> printf ("plot [x=%g:%g] '-' with linespoints ls 1\n", -width*0.5, width*0.5);</div><div><br></div><div>does make it work better, especially for subsample=0, by making the range stay fixed.</div><div><br></div><div>Also if you run it on an older gnuplot that does not understand "pi" you get a lot of warning messages on stderr.</div><div><br></div><div>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.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 13, 2016 at 7:24 AM, Bill Spitzak <span dir="ltr"><<a href="mailto:spitzak@gmail.com" target="_blank">spitzak@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 04/12/2016 01:55 PM, Søren Sandmann wrote:<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
This series is available as a git repository here:<br>
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<a href="https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master" rel="noreferrer" target="_blank">https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master</a><br>
</blockquote>
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Not having much luck with that url:<br>
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fatal: repository '<a href="https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master/" rel="noreferrer" target="_blank">https://cgit.freedesktop.org/~sandmann/pixman/log/?h=spitzak-for-master/</a>' not found<br>
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</blockquote></div><br></div>