Bug 83896

Summary: xlib.fallback occasionally incorrectly treats OVER as SOURCE
Product: cairo Reporter: Massimo <sixtysix>
Component: xlib backendAssignee: Chris Wilson <chris>
Status: RESOLVED MOVED QA Contact: cairo-bugs mailing list <cairo-bugs>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
i915 platform: i915 features:
Attachments: quick hack

Description Massimo 2014-09-15 15:39:56 UTC
Created attachment 106329 [details]
quick hack

the xlib.fallback composer calls a fill_reduces_to_source in
src/cairo.image-compositor.c that simplifies an OVER operator fill
to a SOURCE operator fill whenever the destination is clear.

This means that you have to mark the shm-image-surface as no longer clear
after it is filled as the attached quick hack does.
It fixes    

all .xlib.fallback.rgb24
Comment 1 GitLab Migration User 2018-08-25 14:02:43 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/328.

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.