Right now Qt asserts when tring to do a shallow copy of ImageBuffer. We want to use that feature for TextureMapper (see https://bugs.webkit.org/show_bug.cgi?id=77148).
Created attachment 125207 [details] Patch
Created attachment 125347 [details] Patch
Comment on attachment 125347 [details] Patch Clearing flags on attachment: 125347 Committed r106804: <http://trac.webkit.org/changeset/106804>
All reviewed patches have been landed. Closing bug.