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http://www.openoffice.org/issues/show_bug.cgi?id=88795
                 Issue #|88795
                 Summary|Aqua: no need to emulate modern graphics operations
               Component|gsl
                 Version|DEV300m10
                Platform|Macintosh
                     URL|
              OS/Version|Mac OS X
                  Status|NEW
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|ENHANCEMENT
                Priority|P3
            Subcomponent|code
             Assigned to|hdu
             Reported by|hdu





------- Additional comments from [EMAIL PROTECTED] Mon Apr 28 08:54:34 +0000 
2008 -------
While working on issue 87689 I noticed that some old parts of GSL code spend a 
lot of energy to emulate 
common graphics operations, e.g. by using the XOR trick to emulate polygon 
shaped clipping of gradient 
areas.

That emulation layer was certainly useful for primitive graphics targets, but 
on a powerful graphics system 
like Quartz it does more harm than good. It should be disabled. In the example 
of the XOR trick I 
mentioned above that can be perfectly replaced by using Quartz's polygon 
clipping support.

Unfortunately we'll still need a different kind of emulation to handle legacy 
documents. E.g. old metafiles 
sometimes need XOR, but Quartz doesn't support this obsolete blend mode.

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