https://bugzilla.gnome.org/show_bug.cgi?id=729215
gtk+ | Backend: Wayland | 3.13.x
Summary: Please implement Wayland subsurfaces
Classification: Platform
Product: gtk+
Version: 3.13.x
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: Backend: Wayland
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
CC: [email protected], [email protected]
GNOME version: ---
Created an attachment (id=275441)
--> (https://bugzilla.gnome.org/attachment.cgi?id=275441)
gdkwayland-subsurfaces.diff
In order to provide the same level of functionalities with GDK-Wayland that we
have with GDK-X11/Win32, we need a way to draw in a GTK+ window using an
external backend (such as OpenGL, SDL...) and keep the drawing area consistent
in terms of location, size... as we move the GTK+ window around.
Real-world examples : GL application (GtkGLgears), media players, video games.
Wayland subsurfaces allow that. Please consider this patch, which implements
this workflow :
gdk_wayland_window_set_use_custom_subsurface (window, <x>, <y>);
struct wl_surface *surf = gdk_wayland_window_get_subsurface (window).
*and draw to the wl_surface
(PS : it has been said it would be possible to achieve that functionality by
other means ; that needs more details, though).
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