[cairo-bugs] [Bug 101866] New: raster source pattern callback weirdness

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101866

            Bug ID: 101866
           Summary: raster source pattern callback weirdness
           Product: cairo
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: chris at chris-wilson.co.uk
          Reporter: reiter.christoph at gmail.com
        QA Contact: cairo-bugs at cairographics.org

Created attachment 132810
  --> https://bugs.freedesktop.org/attachment.cgi?id=132810&action=edit
example program

I'm currently trying to bind raster source patterns in pycairo and hitting some
problems I don't understand.

See the example program:

1) Set a callback through cairo_raster_source_pattern_set_acquire
2) Wait until the callback is called

Expected:

  The first parameter passed to the callback is the pattern

Actual:

  Some different pattern is passed and it is dead, so doing anything with it
crashes.

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