On Mon, 25 Sep 2006 00:45:34 +0100, Richard June <[EMAIL PROTECTED]> wrote:

> Then I completely misunderstood the purpose of Xdamage. I thought it would
> transmit only the parts of the page which had changed, no matter the reason.

If this where the case - for video - most pixels will change from frame to 
frame anyway (think about motion tracking codecs for example) and computing the 
difference between successive frames would be very processor intensive, as 
would applying the diffs at the other end. The only way I can see round this 
would be to pass the video to clients compressed and have it uncompressed 
there. There would be lots of ways to do this, like passing the video file in 
whatever format it happened to be in over to the client for display. I have 
really wanted to run VLC as a local app for this purpose, but not got round to 
it.

There's a short Xdamage summary here: 
http://freedesktop.org/wiki/Software/XDamage

-- 
 From Ben Green


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