On Mon, 20 Jan 2003, Luugi Marsan wrote:

> Is there a way for a driver to be informed when X has finished a drawing 
> operation? Maybe even tell the driver what section has been modified.

I don't really have any answers.

If you are an accelerated driver, I'd be tempted to say that the operation
is finished when the driver has finished its action and returns to the
server.

shadowfb does software rendering and then updates rectangles that change.
The shadowfb and other code in miext handle clip boxes; you might get some
hints there.

-- 
Dr. Andrew C. Aitchison         Computer Officer, DPMMS, Cambridge
[EMAIL PROTECTED]   http://www.dpmms.cam.ac.uk/~werdna

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