Bug 68457 - cairo_dfb_surface does not unlock directfb surface after lock
Summary: cairo_dfb_surface does not unlock directfb surface after lock
Status: RESOLVED NOTABUG
Alias: None
Product: cairo
Classification: Unclassified
Component: directfb backend (show other bugs)
Version: 1.12.14
Hardware: All All
: medium critical
Assignee: cairo-bugs mailing list
QA Contact: cairo-bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-08-22 23:38 UTC by frank.chou
Modified: 2013-08-23 08:12 UTC (History)
0 users

See Also:
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Attachments

Description frank.chou 2013-08-22 23:38:23 UTC 

    


    


      



        
          Comment 1
        

        
          frank.chou

        

        
        

        
          2013-08-22 23:40:23 UTC
        

      






There is a bug in Cairo DirectFB backend. After applying the patch from the link below to cairo-1.12.14
http://cgit.freedesktop.org/cairo/commit/?id=631bf299256e11a17511977f357e0353fb5615f7

The directfb surface is locked in _cairo_dfb_surface_map_to_image() but not unlocked in _cairo_dfb_surface_unmap_image(). Therefore, it is preventing the application from using that directfb surface, such as surface->flip.

    


    


      



        
          Comment 2
        

        
          Chris Wilson

        

        
        

        
          2013-08-23 08:12:34 UTC
        

      






Yes, that is quite deliberate. Note that you are expected to call cairo_surface_flush() before manipulating any cairo surface directly (and has been in the documented interface since 1.0).

    



  






  














    


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