Re: [PATCH] drm/virtio: Enable fb damage clips property for the primary plane

[Thomas Zimmermann]

Hi Javier

Am 10.03.23 um 13:59 schrieb Javier Martinez Canillas:
> Christian Hergert reports that the driver doesn't enable the property and
> that leads to always doing a full plane update, even when the driver does
> support damage clipping for the primary plane.
>
> Don't enable it for the cursor plane, because its .atomic_update callback
> doesn't handle damage clips.
>
> Reported-by: Christian Hergert <chergert@xxxxxxxxxx>
> Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
> ---
>
>   drivers/gpu/drm/virtio/virtgpu_plane.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
> index 4c09e313bebc..a2e045f3a000 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_plane.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
> @@ -390,5 +390,9 @@ struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,

virtio_gpu_plane_init() should really be two separate functions. But 
withing the constrains of the current code

Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

Best regards
Thomas

>   		return plane;
>   
>   	drm_plane_helper_add(plane, funcs);
> +
> +	if (type == DRM_PLANE_TYPE_PRIMARY)
> +		drm_plane_enable_fb_damage_clips(plane);
> +
>   	return plane;
>   }
>
> base-commit: 3e853b9f89e4bcc8aa342fa350d83ff0df67d7e9

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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