From: Javier Martinez Canillas Date: Thu, 23 Nov 2023 22:13:02 +0000 (+0100) Subject: drm/vmwgfx: Disable damage clipping if FB changed since last page-flip X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b83b2a80d662cc8ba9d78db64fb70fbb5a481d9c;p=linux.git drm/vmwgfx: Disable damage clipping if FB changed since last page-flip The driver does per-buffer uploads and needs to force a full plane update if the plane's attached framebuffer has change since the last page-flip. Suggested-by: Sima Vetter Signed-off-by: Javier Martinez Canillas Reviewed-by: Thomas Zimmermann Reviewed-by: Zack Rusin Acked-by: Sima Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20231123221315.3579454-4-javierm@redhat.com --- diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c index bea0abc3d4188..5fd0ccaa0b41b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c @@ -832,10 +832,21 @@ int vmw_du_primary_plane_atomic_check(struct drm_plane *plane, { struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, + plane); struct drm_crtc_state *crtc_state = NULL; struct drm_framebuffer *new_fb = new_state->fb; + struct drm_framebuffer *old_fb = old_state->fb; int ret; + /* + * Ignore damage clips if the framebuffer attached to the plane's state + * has changed since the last plane update (page-flip). In this case, a + * full plane update should happen because uploads are done per-buffer. + */ + if (old_fb != new_fb) + new_state->ignore_damage_clips = true; + if (new_state->crtc) crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);