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: Jonas Ådahl <jad...@gmail.com>
Signed-off-by: Jocelyn Falempe <jfale...@redhat.com>
---
drivers/gpu/drm/mgag200/mgag200_mode.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c
b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 6e18d3bbd720..cff2e76f3fa0 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1107,6 +1107,8 @@ 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);
--
2.35.1
