diff --git a/include/wlr/types/wlr_scene.h b/include/wlr/types/wlr_scene.h index b5e2d839..c96fbf57 100644 --- a/include/wlr/types/wlr_scene.h +++ b/include/wlr/types/wlr_scene.h @@ -335,11 +335,29 @@ struct wlr_scene_tree *wlr_scene_tree_create(struct wlr_scene_tree *parent); /** * Add a node displaying a single surface to the scene-graph. * - * The child sub-surfaces are ignored. + * The child sub-surfaces are ignored. See wlr_scene_subsurface_tree_create() * - * wlr_surface_send_enter() and wlr_surface_send_leave() will be called - * automatically based on the position of the surface and outputs in - * the scene. + * Note that this helper does multiple things on behalf of the compositor. Some + * of these include protocol implementations where compositors just need to enable + * the protocols: + * - wp_viewporter + * - wp_presentation + * - wp_fractional_scale_v1 + * - wp_alpha_modifier_v1 + * - wp_linux_drm_syncobj_v1 + * - zwp_linux_dmabuf_v1 presentation feedback with wlr_scene_set_linux_dmabuf_v1() + * + * This helper will also transparently: + * - Send preferred buffer scale* + * - Send preferred buffer transform* + * - Restack xwayland surfaces. See wlr_xwayland_surface_restack()** + * - Send output enter/leave events. + * + * * Note that scale and transform sent to the surface will be based on the output + * which has the largest visible surface area. Intelligent visibility calculations + * influence this. + * ** xwayland stacking order is undefined when the xwayland surfaces do not + * intersect. */ struct wlr_scene_surface *wlr_scene_surface_create(struct wlr_scene_tree *parent, struct wlr_surface *surface);