--- Michel Dänzer <[EMAIL PROTECTED]> wrote:
> On Sun, 2003-10-12 at 17:27, Alex Deucher wrote:
> > Well, I solved the problem...sort of... it happens when I'm using a
> > merged mode that's 2048 wide.  Does anyone know why there would be
> > corruption at 2048x768 (2 heads of 1024x768)?  Has anyone tried a
> > single head at 2048x1536?  
> 
> You could try yourself. :)

I wish I had a monitor that could display 2048x1536.  Mine tops out at
1600x1200 :)
3D works fine as long the width of the crtc(s) is less than 2048. 
virtual desktop size doesn't seem to affect 3D.

> 
> > 3d works fine if I run in single head mode.  however, if I run with
> > mergedfb I get weird corruption in fullscreen apps like screen
> savers. 
> > for example, if I run the atlantis screen saver, there appears to
> be
> > "junk" from previous 3D apps that is colored the same as the blue
> back
> > ground.  then when the whales are drawn you appear to be swimming
> > behind remnants of old whales and gears from glxgears.  running in
> > single head mode works fine and running windowed 3d apps works fine
> on
> > both heads in mergedfb mode.  
> 
> Weird, as there's no fundamental difference between windowed and
> fullscreen.

yeah.

> 
> > On my laptop in mergedfb mode (m6 - r100), fullscreen apps like
> screen 
> > savers show no such corruption; they render fine across both heads.
>  
> > I've tried all the different settings (TCL, frame throttling, etc.)
> 
> > nothing changes.  does anyone know why this could happening?  has 
> > anyone else experienced anything similar?
> 
> I see problems in 2048x1024 on R100, but only with page flipping. Is
> that also true for your problem?
> 

No.  I have pageflipping disabled.  pageflipping doesn't work right in
certain mergedfb modes (leftOf and Above - those where crtc2 precedes
crtc1 in the framebuffer).

Alex



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