Hello,
      I don't paint the colorkey in driver. And I have think that if app programe ask 
for colorkey and set the colorkey value, 
then the driver set the relatived registers . and if the app programe don't ask for 
colorkey , the driver do nothing. Now it 
seems that my thougnt is too simple. But I have another question, when we auto paint 
the key color through the driver, if 
the efficiency will be very slow ? I look at some founction in ati and nv' xv driver 
in putvideo, it seems that they use 2D 
founction, it's do that ? 

Thanks very much
Hzeng

> 
>    The driver should be painting the colorkey like it is in all the
> other drivers.  The client choosing to paint the key should be optional
> behavior selected by the client specifically turning off the AUTOPAINT.
> Yes, there are problems when the client quits and autopainting is
> still left disabled.  There's not really a solution for that. 
> Having the client paint the key itself is a kludge in this API and
> is discouraged.
> 
> 
> Mark.
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