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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - painting an xlib surface with source set to another surface created with cairo_image_surface_create_from_png fails if xlib surface is set to the exact size of the png image."
href="https://bugs.freedesktop.org/show_bug.cgi?id=103614#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - painting an xlib surface with source set to another surface created with cairo_image_surface_create_from_png fails if xlib surface is set to the exact size of the png image."
href="https://bugs.freedesktop.org/show_bug.cgi?id=103614">bug 103614</a>
from <span class="vcard"><a class="email" href="mailto:psychon@znc.in" title="Uli Schlachter <psychon@znc.in>"> <span class="fn">Uli Schlachter</span></a>
</span></b>
<pre>I took a quick look and something in cairo-tor-scan-converter.c seems to
mishandle your line. I don't know the details, sorry.
This polygon is its input (I am rendering your line to a 20x20 image surface):
polygon: extents=(0.000000, 0.000000), (20.000000, 20.000000)
[0] = [(0.000000, 0.000000), (0.000000, 20.000000)], top=0.000000,
bottom=1.414062, dir=-1
[1] = [(-200000.707031, -199999.292969), (199999.292969, 200000.707031)],
top=1.414062, bottom=20.000000, dir=-1
[2] = [(20.000000, 0.000000), (20.000000, 20.000000)], top=18.585938,
bottom=20.000000, dir=1
[3] = [(-199999.292969, -200000.707031), (200000.707031, 199999.292969)],
top=0.000000, bottom=18.585938, dir=1
I am not quite sure, but this seems more or less okay. The scan converter then
ends up with 0 spans most of the time, but just some spans on the last two
lines.
So... no idea.</pre>
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