[Mesa-dev] [PATCH 2/2] i965: Set Y-tiling for qualified rotated scanout buffers

[Vivek Kasireddy]

On Thu, 22 Oct 2015 21:12:02 -0700
Ben Widawsky <ben at bwidawsk.net> wrote:

> On Thu, Oct 22, 2015 at 06:44:53PM -0700, Vivek Kasireddy wrote:
> > On newer hardware platforms that support rotation, if the gbm
> > interface requests to create a rotated scanout buffer via the
> > flag __DRI_IMAGE_USE_SCANOUT_ROTATED_90_270, set Y-tiling
> > while creating the buffer.
> > 
> > Cc: Kristian Hogsberg <krh at bitplanet.net>
> > Signed-off-by: Vivek Kasireddy <vivek.kasireddy at intel.com>
> 
> FYI, I'd been hoping to land a superset of this for quite a while. My
> understanding was the DDX doesn't support it.
> 
> http://patchwork.freedesktop.org/patch/46984/

Hi Ben,
I am sorry I wasn't aware of your patch. I am testing this feature with
a Wayland/Weston based compositor. 

Thanks and Regards,
Vivek

> 
> > ---
> >  src/mesa/drivers/dri/i965/intel_screen.c | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/src/mesa/drivers/dri/i965/intel_screen.c
> > b/src/mesa/drivers/dri/i965/intel_screen.c index 590c45d..1079676
> > 100644 --- a/src/mesa/drivers/dri/i965/intel_screen.c
> > +++ b/src/mesa/drivers/dri/i965/intel_screen.c
> > @@ -525,6 +525,12 @@ intel_create_image(__DRIscreen *screen,
> >  
> >     if (use & __DRI_IMAGE_USE_LINEAR)
> >        tiling = I915_TILING_NONE;
> > +   else if (use & __DRI_IMAGE_USE_SCANOUT_ROTATED_90_270) {
> > +      if (intelScreen->devinfo->gen >= 9)
> > +         tiling = I915_TILING_Y;
> > +      else
> > +         return NULL;
> > +   }
> >  
> >     image = intel_allocate_image(format, loaderPrivate);
> >     if (image == NULL)
> > -- 
> > 2.4.3
> > 
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