[Intel-gfx] [PATCH] Make DGA optional

[Zhenyu Wang]

On 2009.09.15 08:11:41 -0700, Keith Packard wrote:
> On Tue, 2009-09-15 at 15:14 +0800, Zhenyu Wang wrote:
> 
> > As DGA is optional in xserver, revert that one might crash X in start.
> > Or we just fake to init DGA proto, not sure if there's any DGA callbacks
> > that driver can use for framebuffer open later?
> 
> DGA isn't really optional; you'd have to recompile the X server to
> disable it. And, as we know, many applications depend on it (but only
> for input).

ok, so looks we have to revert that patch for now.

> 
> > DGA did not work correctly in KMS before, but some close-source games were
> > still working makes me think they might just check if DGA proto exists...
> 
> The only thing these games use DGA for is to get relative mouse motion;
> they don't use it for drawing (at least, very few use it for drawing
> anymore). Those requests never come near our driver.
> 

thanks.

-- 
Open Source Technology Center, Intel ltd.

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