<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Mask problem in pdf" href="https://bugs.freedesktop.org/show_bug.cgi?id=63302#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Mask problem in pdf" href="https://bugs.freedesktop.org/show_bug.cgi?id=63302">bug 63302</a> from <a class="email" href="mailto:sixtysix@inwind.it" title="Massimo <sixtysix@inwind.it>"> Massimo</a> <pre>(In reply to Massimo from <a href="show_bug.cgi?id=63302#c15">comment #15</a>) > Created <a href="attachment.cgi?id=118973" name="attach_118973" title="test case">attachment 118973</a> <a href="attachment.cgi?id=118973&action=edit" title="test case">[details]</a> > test case The GIMP issue, as I understood it, is probably a poppler bug where a raster surface is resampled using unpremultiplied components and so suffering of color bleeding. the black color attributed to completely transparent pixels is used interpolating partly transparent pixels and appears at the border of white shapes drawn above a white background. The attached program saves a pdf that when opened in GIMP is completely white if you set a resolution of 72 dpi, but shows the grey arc shape when a different resolution is chosen. Similarly behaves pdftocairo: the output of pdftocairo -png -rx 72 -ry 72 bug-63302.pdf bug-63302.72-dpi is completely white, whereas the output of pdftocairo -png bug-63302.pdf bug-63302.150-dpi shows the grey arc outline.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>