Created attachment 85987 [details] screenshot When you move mouse over the rounded graph in Gnome Disk Usage Analyzer, there occasionally appears black thin vertical lines. This doesn't happen with UXA. Screenshot atached. GPU: gm45 xf86-video-intel: 825557ce44b16b59438df31fd6df2ed82462be89 Kernel: 3.10.11-100.fc18.x86_64 Libdrm: 2.4.45-1.fc18
As anticipated it is a seam introduced by the Imprecise trapezoidation. Not sure yet if it is fixable.
Hmm, actually the corruption is always on the very left of the rendered area - so an artifact of the trapezoid clipping.
My apologies for assuming that this was just an Imprecise trapezoid artifact and not giving it the attention it deserved. commit c724098f2215ff4f4193bbae3d8e42889701edf0 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Mon Sep 30 23:34:02 2013 +0100 sna/trapezoids: Fix clipping on the far left Edges that extend past the left hand side of the clip box cannot simply be ignored (since they contribute to the scanline to their right, our region of interest) but they need to calculated separately rather than merged into the first cell. Reported-by: Pavel Ondračka <pavel.ondracka@email.cz> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69469 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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