wlr_scene: Introduce buffer opaque region metadata

1 files changed, 8 insertions, 0 deletions

diff --git a/include/wlr/types/wlr_scene.h b/include/wlr/types/wlr_scene.h
index efdd6061..d6b89156 100644
--- a/include/wlr/types/wlr_scene.h
+++ b/include/wlr/types/wlr_scene.h
@@ -156,6 +156,7 @@ struct wlr_scene_buffer {
 	struct wlr_fbox src_box;
 	int dst_width, dst_height;
 	enum wl_output_transform transform;
+	pixman_region32_t opaque_region;
 };
 
 struct wlr_scene_output_render_list {
@@ -347,6 +348,13 @@ void wlr_scene_buffer_set_buffer_with_damage(struct wlr_scene_buffer *scene_buff
 	struct wlr_buffer *buffer, pixman_region32_t *region);
 
 /**
+ * Sets the buffer's opaque region. This is an optimization hint used to
+ * determine if buffers which reside under this one need to be rendered or not.
+ */
+void wlr_scene_buffer_set_opaque_region(struct wlr_scene_buffer *scene_buffer,
+	pixman_region32_t *region);
+
+/**
  * Set the source rectangle describing the region of the buffer which will be
  * sampled to render this node. This allows cropping the buffer.
  *