(In reply to comment #43)
> @Fredrik:
> the commit is not commented - what was the reason behind this (possibly
> related to a special driver version?)

With DRI2 drivers there is no need to rebind the window pixmap to the
texture every time the window is damaged. The texture and the pixmap
reference the same memory buffer.

This commit has no effect on the GLES backend however, since it always
enables loose binding unconditionally.

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https://bugs.launchpad.net/bugs/1061073

Title:
  Desktop effects are slow and desktop corruption using mesa 9

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