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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - surface change serial / damage API"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=30003#c5">Comment # 5</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - surface change serial / damage API"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=30003">bug 30003</a>
              from <span class="vcard"><a class="email" href="mailto:psychon@znc.in" title="Uli Schlachter <psychon@znc.in>"> <span class="fn">Uli Schlachter</span></a>
</span></b>
        <pre>This only adresses the original "callback when surface content changes", but
you can (ab)use cairo_surface_set_mime_data() to get a callback when a surface
is modified.

An example for this can be found here:
<a href="https://bugzilla.mozilla.org/attachment.cgi?id=624394&action=diff">https://bugzilla.mozilla.org/attachment.cgi?id=624394&action=diff</a></pre>
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