[bug #19350] Cairo: compositing gives wrong image for some modes

[Mark Tracy]

URL:
  <http://savannah.gnu.org/bugs/?19350>

                 Summary: Cairo: compositing gives wrong image for some modes
                 Project: GNUstep
            Submitted by: tracy454
            Submitted on: Tuesday 03/20/2007 at 06:29
                Category: Backend
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

See the TestApp. Using art backend, the compositing operations work as
expected (except Highlight). Cairo backend gives bad rendering of view when
using NSFillRectUsingOperation(rect, op) when op = {SourceIn | SourceOut |
DestinationIn | DestinationATop | PlusDarker}. The strange part is that if
one exports the view as a bitmap image, the composited image is OK. Only the
rendering in the view is wrong.

System: Suse Linux 10.1; Parallels Virtual Machine over Mac OSX; GNUstep svn
24903



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File Attachments:


-------------------------------------------------------
Date: Tuesday 03/20/2007 at 06:29  Name: TestApp.tar.bz2  Size: 72kB   By:
tracy454

<http://savannah.gnu.org/bugs/download.php?file_id=12215>

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  <http://savannah.gnu.org/bugs/?19350>

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