Re: [Dri-devel] DRI and screen resize in MergedFB mode

[Alex D. <ag...@ya...>]

--- Michel D�nzer <mi...@da...> wrote:
> On Wed, 2003-06-11 at 21:47, Alex Deucher wrote: 
> > I've had several reports of DRI not working after a screen resize
> using
> > mergedfb code.  I haven't really had time to tackle it, and
> > unfortunately, i'm not real familiar with how DRI interacts with a
> mode
> > change or xrandr.
> 
> AFAIK it doesn't care about them at all yet (and it shouldn't need to
> for the former at least).
> 
> 

that's what I thought.


> > As background, mergedfb provides a single framebuffer with two
> > viewports looking into it.  HW accelerated 3D works fine on both
> heads
> > in the inital mode, however I've gotten reports from users that the
> DRI
> > stops working when you change "metamodes" using ctrl-alt-+/-. 
> > metamodes are just mode combinations that describe the mode on each
> > head for mode changes (e.g., 1024x768-1024x768 1024x768-800x600,
> etc.).
> > 
> > More details about the problem are listed here:
> > http://bugs.xfree86.org/cgi-bin/bugzilla/show_bug.cgi?id=276
> 
> Looks like the hanging ioctl is DRM_IOCTL_LOCK, maybe there's a
> DRILock()
> with no corresponding DRIUnlock()?
> 


Maybe... I don't know.  I certainly didn't add or remove any when wrote
mergedfb support.  I don't know why it wouldn't also show up in single
head mode...

Alex


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