Commit 3064deba authored by Jocelyn Falempe's avatar Jocelyn Falempe
Browse files

drm/mgag200: Add FB_DAMAGE_CLIPS support 



The driver does support damage clips, but doesn't advertise it.
So when running gnome/wayland on Matrox hardware, the full frame is
copied to the slow Matrox memory, which leads to very poor performances.

Add drm_plane_enable_fb_damage_clips() to advertise this capability to
userspace.

With this patch, gnome/wayland becomes usable on Matrox GPU.

Suggested-by: default avatarJonas Ådahl <jadahl@gmail.com>
Signed-off-by: default avatarJocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: default avatarLyude Paul <lyude@redhat.com>
Reviewed-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504134026.283417-2-jfalempe@redhat.com
parent 0f6e2fff

drivers/gpu/drm/mgag200/mgag200_mode.c

+2 −0
Original line number Diff line number Diff line
@@ -1121,6 +1121,8 @@ int mgag200_modeset_init(struct mga_device *mdev) 
		return ret;

	}



	drm_plane_enable_fb_damage_clips(&pipe->plane);



	/* FIXME: legacy gamma tables; convert to CRTC state */

	drm_mode_crtc_set_gamma_size(&pipe->crtc, MGAG200_LUT_SIZE);