[MPlayer-users] WAIT FOR VSYNC ioctl of intelfb in kernel 2.6.19

[Rich Felker]

On Wed, Nov 08, 2006 at 12:26:03AM +0800, kofboy wrote:
> hi,all: 
> 
> The newest driver of intelfb add VSYNC interrupt support in kernel 2.6.19.
> i think this ioctl is useful to the people who useing fbdev as video output. 
> 
> Can we use mplayer -vo fbdev2 -vsync to improve tearing issues? 

I don't think it will work in the current design. You'd need to make
vo_fbdev2 page-flipped, which would in turn preclude using it in some
typical hackish situations that users like, iirc. There should
probably be a second page-flipped fbdev vo. Perhaps fbdev2 should be
this one and the original fbdev should just be left as-is..?

Also, wait-for-vsync hurts performance a lot. It would be better if
the 'page flip at vsync' ioctl works.

Rich