On Fri, 18 Mar 2011 16:58:39 -0500 (CDT) Ilija Hadzic <ihadzic at research.bell-labs.com> wrote:
> > Hi Alex, > > Below is a patch against the master branch of xf86-video-ati that adds > support for waits on vblank events on CRTCs that are greater than 1 (and > thus cannot be represented using current primary/secondary flags > interface). The patch makes use of GET_CAP ioctl to check whether > vblanks on crtc > 1 are supported by the kernel. If they are not > falls back to legacy behavior. Otherwise, it uses correct crtc numbers > when waiting on vblank and thus corrects the problem seen in certain > multiscreen configurations. > > The issue was discussed on the dri-devel list in these two threads > > http://lists.freedesktop.org/archives/dri-devel/2011-March/009009.html > http://lists.freedesktop.org/archives/dri-devel/2011-March/009025.html > The duplicated code in each function is begging to get pulled out into a separate function... -- Jesse Barnes, Intel Open Source Technology Center
