Intel i915GM (xf86-video-intel modesetting) Tearing

[kofboy]

hi,will

> > >  it appears
> > > there is nothing in the XV code that would synchronise to the vertical
> > > blanking period for display (overlay?) updates?
> > 
> > Right, the textured video adaptor doesn't delay for vsync; that's
> > because we don't have the infrastructure in place to do this without
> > spinning inside the driver, which wastes a lot of CPU time.
> 
> Thanks for confirming this. I certainly had issues with CPU spinning when
> using double buffering (in the previous i810 driver) it would often end up
> eating all the CPU time. In the end I hacked the xine video out loop and put
> in a glx wait which seemed to fix things.
>


would you please post your patch for xine video out?

i have searched the whole list, and find you are the only one who fixed
tearing issues useing XV for intel gfx-card without overlay.

 				

　　　　　　　　kofboy
　　　　　　　　kofboy at 163.com
　　　　　　　　　　2007-08-01