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Merge pull request #54326 from nekomatata/x11-fix-input-delay

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Rémi Verschelde 2021-10-28 08:57:37 +02:00 committed by GitHub
commit d4067e661c
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2 changed files with 31 additions and 20 deletions
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50
platform/linuxbsd/display_server_x11.cpp
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@ -2725,30 +2725,37 @@ void DisplayServerX11::_poll_events() {
{
MutexLock mutex_lock(events_mutex);
// Non-blocking wait for next event and remove it from the queue.
XEvent ev;
while (XCheckIfEvent(x11_display, &ev, _predicate_all_events, nullptr)) {
// Check if the input manager wants to process the event.
if (XFilterEvent(&ev, None)) {
// Event has been filtered by the Input Manager,
// it has to be ignored and a new one will be received.
continue;
}
// Handle selection request events directly in the event thread, because
// communication through the x server takes several events sent back and forth
// and we don't want to block other programs while processing only one each frame.
if (ev.type == SelectionRequest) {
_handle_selection_request_event(&(ev.xselectionrequest));
continue;
}
polled_events.push_back(ev);
}
_check_pending_events(polled_events);
}
}
}
void DisplayServerX11::_check_pending_events(LocalVector<XEvent> &r_events) {
// Flush to make sure to gather all pending events.
XFlush(x11_display);
// Non-blocking wait for next event and remove it from the queue.
XEvent ev;
while (XCheckIfEvent(x11_display, &ev, _predicate_all_events, nullptr)) {
// Check if the input manager wants to process the event.
if (XFilterEvent(&ev, None)) {
// Event has been filtered by the Input Manager,
// it has to be ignored and a new one will be received.
continue;
}
// Handle selection request events directly in the event thread, because
// communication through the x server takes several events sent back and forth
// and we don't want to block other programs while processing only one each frame.
if (ev.type == SelectionRequest) {
_handle_selection_request_event(&(ev.xselectionrequest));
continue;
}
r_events.push_back(ev);
}
}
void DisplayServerX11::process_events() {
_THREAD_SAFE_METHOD_
@ -2798,6 +2805,9 @@ void DisplayServerX11::process_events() {
MutexLock mutex_lock(events_mutex);
events = polled_events;
polled_events.clear();
// Check for more pending events to avoid an extra frame delay.
_check_pending_events(events);
}
for (uint32_t event_index = 0; event_index < events.size(); ++event_index) {

1
platform/linuxbsd/display_server_x11.h
View File

@ -268,6 +268,7 @@ class DisplayServerX11 : public DisplayServer {
static void _poll_events_thread(void *ud);
bool _wait_for_events() const;
void _poll_events();
void _check_pending_events(LocalVector<XEvent> &r_events);
static Bool _predicate_all_events(Display *display, XEvent *event, XPointer arg);
static Bool _predicate_clipboard_selection(Display *display, XEvent *event, XPointer arg);