[4/5] WineD3D: Enable the draw buffers extension only when used

[Stefan Dösinger]

Am Montag, 22. Oktober 2007 17:41:33 schrieb H. Verbeet:
> Probably, but the warnings are a driver problem, not a wined3d
> problem. The really bad part is that if the drivers ever get fixed we
> end up with workarounds for problems that no longer exist.
This is a good point, if we put such a workaround in it is pretty unlikely 
that we'll retest for it and remove it, unless it makes active problems.

On the other hand, broken drivers tend stay around even if the newest version. 
This here happens on MacOS 10.4, and since 10.5 is due to ship in a few days, 
I don't expect any more than security updates for 10.4, but it will remain 
important for quite some more time because the update is not free.

I looked for some other reports of this issue, and it seems that some fglrx 
and card combinations are affected by a similar problem. I never saw it 
myself, but fglrx floods us with spec-violating success messages, so I never 
spent much attention at the driver output...
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