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	scene: set output damage during direct scan-out
This allows the backend to have access to the frame damage, as reported by the scanned-out client. Some KMS drivers can make use of it (e.g. for PSR, or optimized USB transfers in the GUD driver), and the Wayland/X11 backends forward it to the parent compositor.
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					 1 changed files with 27 additions and 11 deletions
				
			
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			@ -1378,6 +1378,21 @@ static bool construct_render_list_iterator(struct wlr_scene_node *node,
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	return false;
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}
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static void get_frame_damage(struct wlr_scene_output *scene_output, pixman_region32_t *frame_damage) {
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	struct wlr_output *output = scene_output->output;
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	int tr_width, tr_height;
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	wlr_output_transformed_resolution(output, &tr_width, &tr_height);
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	enum wl_output_transform transform =
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		wlr_output_transform_invert(output->transform);
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	pixman_region32_init(frame_damage);
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	wlr_region_transform(frame_damage,
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		&scene_output->damage_ring.current,
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		transform, tr_width, tr_height);
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}
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static bool scene_node_try_direct_scanout(struct wlr_scene_node *node,
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		struct wlr_scene_output *scene_output, struct wlr_box *box) {
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	if (!scene_output->scene->direct_scanout) {
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			@ -1433,7 +1448,17 @@ static bool scene_node_try_direct_scanout(struct wlr_scene_node *node,
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		return false;
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	}
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	return wlr_output_commit_state(output, &state);
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	state.committed |= WLR_OUTPUT_STATE_DAMAGE;
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	get_frame_damage(scene_output, &state.damage);
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	bool ok = wlr_output_commit_state(output, &state);
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	pixman_region32_fini(&state.damage);
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	if (!ok) {
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		return false;
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	}
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	wlr_damage_ring_rotate(&scene_output->damage_ring);
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	return true;
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}
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bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
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			@ -1634,17 +1659,8 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
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	wlr_renderer_end(renderer);
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	pixman_region32_fini(&damage);
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	int tr_width, tr_height;
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	wlr_output_transformed_resolution(output, &tr_width, &tr_height);
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	enum wl_output_transform transform =
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		wlr_output_transform_invert(output->transform);
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	pixman_region32_t frame_damage;
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	pixman_region32_init(&frame_damage);
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	wlr_region_transform(&frame_damage,
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		&scene_output->damage_ring.current,
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		transform, tr_width, tr_height);
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	get_frame_damage(scene_output, &frame_damage);
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	wlr_output_set_damage(output, &frame_damage);
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	pixman_region32_fini(&frame_damage);
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