[PATCH v5 01/13] xf86: Add PRIME flipping functions to Screen

[Alex Goins]

I meant __GL_SYNC_DISPLAY_DEVICE=<slave output name>.

Thanks
Alex

On Fri, 29 Apr 2016, Alex Goins wrote:

> The reference implementation in modesetting doesn't use it, but our driver uses
> it so that we can be aware of the outputs available on the CRTC.
> 
> This allows users to set __GL_SYNC_TO_VBLANK=<slave output name> so that OpenGL
> applications can sync to the slave's vblank in the same fashion that they do for
> native heads in our driver.
> 
> Thanks,
> Alex
> 
> On Fri, 29 Apr 2016, Dave Airlie wrote:
> 
> > On 13 April 2016 at 14:17, Alex Goins <agoins at nvidia.com> wrote:
> > > Adds typedefs for (*RRStartFlippingPixmapTrackingProcPtr),
> > > (*RREnableSharedPixmapFlippingProcPtr),
> > > and (*RRDisableSharedPixmapFlippingProcPtr) in randrstr.h.
> > >
> > > Adds typedefs for (*PresentSharedPixmapProcPtr),
> > > (*SharedPixmapNotifyDamageProcPtr),
> > > (*RequestSharedPixmapNotifyDamageProcPtr), and
> > > (*StopFlippingPixmapTrackingProcPtr) in scrnintstr.h.
> > >
> > > Adds RR(Enable/Disable)SharedPixmapFlipping, and
> > > RRStartFlippingPixmapTracking to rrScrnPrivRec.
> > >
> > > Adds StopFlippingPixmapTracking, PresentSharedPixmap,
> > > SharedPixmapNotifyDamage, and RequestSharedPixmapNotifyDamage to ScreenRec.
> > >
> > > rrScrnPrivRec used for functions that use RandR-private data types, and
> > > ScreenRec used for the rest.
> > >
> > > RREnableSharedPixmapFlipping will allow the sink driver to setup for
> > > flipping between two shared pixmaps.
> > >
> > > RRDisableSharedPixmapFlipping will allow the sink driver to do teardown
> > > associated with flipping between two shared pixmaps.
> > >
> > > (RRStart/Stop)FlippingPixmapTracking are merely the double-buffered
> > > equivalents of (Start/Stop)PixmapTracking, allowing the source driver to do
> > > whatever setup and teardown necessary for presenting on the two shared
> > > pixmaps.
> > 
> > Why does Start take a crtc? I can't see it being used here, do you need it
> > for some reason in some other case, I think it should be migrated to Screen
> > it it doesn't need the crtc. It would also be more symmetrical.
> > 
> > Dave.
> > 
>