Req #66887 [Com]: imagescale - poor quality of scaled image

Edit report at https://bugs.php.net/bug.php?id=66887&edit=1 ID: 66887 Comment by: remi@php.net Reported by: mruz at poczta dot onet dot pl Summary: imagescale - poor quality of scaled image Status: Feedback Type: Feature/Change Request Package: GD related Operating System: openSUSE 13.1 PHP Version: 5.5.10 Block user comment: N Private report: N New Comment: New bug #66893 open for ignored parameter. Keeping this one for "poor quality" using default / IMG_BILINEAR_FIXED method. Previous Comments: ------------------------------------------------------------------------ [2014-03-12 14:24:06] mruz at poczta dot onet dot pl Yes, if I run imagesetinterpolation before imagescale it works fine. In this case IMG_BILINEAR_FIXED and IMG_WEIGHTED4 not look nice, the rest of the algorithms is OK. ------------------------------------------------------------------------ [2014-03-12 13:54:12] remi@php.net Can you try with imagesetinterpolation($oryginal, $alg); $img = imagescale($oryginal, 600, 400); $alg option of imagescale is ignored (yes, this is a "goto fail;" bug) It seems IMG_BILINEAR_FIXED produce this bad quality image. IMG_BICUBIC_FIXED and IMG_NEAREST_NEIGHBOUR seems to work better. ------------------------------------------------------------------------ [2014-03-12 11:18:16] mruz at poczta dot onet dot pl Bundled, x86_64 ------------------------------------------------------------------------ [2014-03-12 11:12:15] pajoye@php.net Looks like a bug. Which gd do you use? Bundled or system? See phpinfo I also need to know which architecture you use (cpu) ------------------------------------------------------------------------ [2014-03-12 11:02:25] mruz at poczta dot onet dot pl Sorry, http://mruz.pl/test/tmp0.jpg , available file names: tmp[0-20].jpg ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=66887 -- Edit this bug report at https://bugs.php.net/bug.php?id=66887&edit=1