Bug 84286 - clip-polygons.xcb-render-0_0.argb32 failure
Summary: clip-polygons.xcb-render-0_0.argb32 failure
Status: RESOLVED MOVED
Alias: None
Product: cairo
Classification: Unclassified
Component: xcb backend (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Uli Schlachter
QA Contact: cairo-bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-09-24 15:13 UTC by Massimo
Modified: 2018-08-25 13:43 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
quick hack (2.12 KB, text/plain)
2014-09-24 15:13 UTC, Massimo
Details

Description Massimo 2014-09-24 15:13:16 UTC
Created attachment 106795 [details]
quick hack

The problem is that the clip contains multiple self-intersecting paths,
in that case _cairo_clip_combine_with_surface (src/cairo-clip-surface.c:78)
uses each path separately with a fill (OPERATOR_IN), for each pixel on the
contour of more than one path that results in a different pixel coverage
than filling once with the path intersection of all paths.

In get_clip_surface (src/cairo-xcb-surface-render.c:1698) using a temoporary
clear image surface and painting in white (OPERATOR_ADD) to perform the
clip fixes

clip-polygons.xcb-render-0_0.argb32
clip-group-shapes-circles.xcb-render-0_0 .argb32 and .rgb24
Comment 1 GitLab Migration User 2018-08-25 13:43:19 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/cairo/cairo/issues/158.


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.