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Wayland: save energy by not rendering "suspended" windows on compositors that support that

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Note that this breaks kitty on GNOME 45 which has a bug, but it fine on
GNOME 46.
This commit is contained in:
Kovid Goyal
2024-05-05 13:42:51 +05:30
parent 6e1df67e03
commit 849dcd424d
2 changed files with 16 additions and 0 deletions
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2
docs/changelog.rst
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@@ -68,6 +68,8 @@ Detailed list of changes
- Dont clear selections on erase in screen commands unless the erased region intersects a selection (:iss:`7408`)
- Wayland: save energy by not rendering "suspended" windows on compositors that support that
0.34.1 [2024-04-19]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

14
glfw/wl_window.c vendored
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@@ -761,6 +761,7 @@ static const struct xdg_toplevel_listener xdgToplevelListener = {
static void
apply_xdg_configure_changes(_GLFWwindow *window) {
bool suspended_changed = false;
if (window->wl.pending_state & PENDING_STATE_TOPLEVEL) {
uint32_t new_states = window->wl.pending.toplevel_states;
int width = window->wl.pending.width;
@@ -771,6 +772,10 @@ apply_xdg_configure_changes(_GLFWwindow *window) {
window->wl.once.surface_configured = true;
}
#ifdef XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION
suspended_changed = ((new_states & TOPLEVEL_STATE_SUSPENDED) != (window->wl.current.toplevel_states & TOPLEVEL_STATE_SUSPENDED));
#endif
if (new_states != window->wl.current.toplevel_states ||
width != window->wl.current.width ||
height != window->wl.current.height) {
@@ -802,6 +807,12 @@ apply_xdg_configure_changes(_GLFWwindow *window) {
inform_compositor_of_window_geometry(window, "configure");
commit_window_surface_if_safe(window);
window->wl.pending_state = 0;
#ifdef XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION
if (suspended_changed) {
debug("Window occlusion state changed, occluded: %d\n", (window->wl.current.toplevel_states & TOPLEVEL_STATE_SUSPENDED) != 0);
_glfwInputWindowOcclusion(window, window->wl.current.toplevel_states & TOPLEVEL_STATE_SUSPENDED);
}
#endif
}
typedef union pixel {
@@ -1666,6 +1677,9 @@ int _glfwPlatformWindowFocused(_GLFWwindow* window)
int _glfwPlatformWindowOccluded(_GLFWwindow* window UNUSED)
{
#ifdef XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION
return (window->wl.current.toplevel_states & TOPLEVEL_STATE_SUSPENDED) != 0;
#endif
return false;
}