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wayland: Guard surface_frame_listener for OpenGL, document why it exists

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Ethan Lee 2021-05-01 09:00:24 -04:00 committed by Ryan C. Gordon
parent 3d47ddc422
commit 2092855035
1 changed files with 8 additions and 2 deletions
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10
src/video/wayland/SDL_waylandwindow.c
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@ -1012,8 +1012,14 @@ int Wayland_CreateWindow(_THIS, SDL_Window *window)
wl_compositor_create_surface(c->compositor);
wl_surface_add_listener(data->surface, &surface_listener, data);
/* fire a callback when the compositor wants a new frame rendered. */
wl_callback_add_listener(wl_surface_frame(data->surface), &surface_frame_listener, data);
/* Fire a callback when the compositor wants a new frame rendered.
* Right now this only matters for OpenGL; we use this callback to add a
* wait timeout that avoids getting deadlocked by the compositor when the
* window isn't visible.
*/
if (window->flags & SDL_WINDOW_OPENGL) {
wl_callback_add_listener(wl_surface_frame(data->surface), &surface_frame_listener, data);
}
#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
if (c->surface_extension) {