How synchronisation works in Framebuffer backend

[David Herrmann]

Hi

On Sat, Mar 22, 2014 at 6:33 PM, Sannu K <sannumail4foss at gmail.com> wrote:
> Hi,
>
> I was going through weston's framebuffer backend code. It does not call
> FBIO_WAITFORVSYNC ioctl.
> http://cgit.freedesktop.org/wayland/weston/tree/src/compositor-fbdev.c#n188
> says that it is not used intentionally. In this case, how weston syncs frame
> with the framebuffer clock? How tearing is avoided?
>
> Thanks in advance for the help.

It doesn't.

Don't use fbdev if you want vsync.

Thanks
David