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

[Ben Widawsky]

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/

> ---
>  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
> 
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev