While investigating the nightly regression report I came across a problem with the rendering of Altona-Testsuite_p2_S_x3.pdf at 72 dpi. There are white horizontal lines within the gradient in the upper left hand corner. Rendering at higher (i.e. 80 dpi) or lower (i.e. 60 dpi) causes the white lines to disappear. Similarly they do not appear with Adobe Acrobat. The command line I'm using: bin/gs -sDEVICE=ppmraw -r72 -o test.ppm Altona-Testsuite_p2_S_x3.pdf Note that this isn't technically a regression, since I couldn't find a copy of Ghostscript that ever rendered this image without the white lines.
Created attachment 4129 [details] Altona-Testsuite_p2_S_x3.pdf
Created attachment 4130 [details] screenshot.png
Can't reproduce. Please specify exact revision number. I do see a difference appeared with revision 8790, but that difference is minor : a shift of white lines. It's an expected difference. The lines also visible with gs8.50 . Returning to the author.
I can confirm this appearance with gv in several resolutions (0.5 ... 2.0).
I've changed the title to to indicate this is not a regression, The white lines shown in the screenshot do not appear when the file is opened in Acrobat or Apple Preview.
Downgrade the priority because it's not a regression.
More white lines in shadings for robin...
Having backtracked all the way to 9.00 I can't reproduce this any more. Therefore closing.