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Fix lag on events 

Found on sanctum2, returning 0 in XPending & XEventsQueued make the SDL do something else than polling events and makes lag the event loop.
Now the event loop returns 0 when there are no more events.
This commit is contained in:
Nemirtingas 2019-09-03 17:24:34 +02:00
parent 9fa4053551
commit 1016e7f47f
4 changed files with 78 additions and 69 deletions
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19
ImGui/impls/linux/imgui_impl_x11.cpp
View File

@ -23,8 +23,9 @@
// X11 Data
static Display* g_Display = nullptr;
static uint64_t g_Time = 0;
static uint64_t g_TicksPerSecond = 0;
static Window g_Window = 0;
static uint64_t g_Time = 0;
static uint64_t g_TicksPerSecond = 0;
static ImGuiMouseCursor g_LastMouseCursor = ImGuiMouseCursor_COUNT;
static bool g_HasGamepad = false;
static bool g_WantUpdateHasGamepad = true;
@ -56,7 +57,7 @@ bool IsKeySys(int key)
}
// Functions
bool ImGui_ImplX11_Init(void *display)
bool ImGui_ImplX11_Init(void *display, void *window)
{
timespec ts, tsres;
clock_getres(CLOCK_MONOTONIC_RAW, &tsres);
@ -72,6 +73,7 @@ bool ImGui_ImplX11_Init(void *display)
// Setup back-end capabilities flags
g_Display = reinterpret_cast<Display*>(display);
g_Window = reinterpret_cast<Window>(window);
ImGuiIO& io = ImGui::GetIO();
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
@ -107,6 +109,7 @@ bool ImGui_ImplX11_Init(void *display)
void ImGui_ImplX11_Shutdown()
{
g_Display = nullptr;
g_Window = 0;
}
static bool ImGui_ImplX11_UpdateMouseCursor()
@ -143,7 +146,7 @@ static bool ImGui_ImplX11_UpdateMouseCursor()
return true;
}
static void ImGui_ImplX11_UpdateMousePos(Window window)
static void ImGui_ImplX11_UpdateMousePos()
{
ImGuiIO& io = ImGui::GetIO();
@ -160,7 +163,7 @@ static void ImGui_ImplX11_UpdateMousePos(Window window)
int rx, ry, x, y;
unsigned int mask;
XQueryPointer(g_Display, window, &unused_window, &unused_window, &rx, &ry, &x, &y, &mask);
XQueryPointer(g_Display, g_Window, &unused_window, &unused_window, &rx, &ry, &x, &y, &mask);
io.MousePos.x = x;
io.MousePos.y = y;
@ -215,7 +218,7 @@ static void ImGui_ImplX11_UpdateGamepads()
*/
}
void ImGui_ImplX11_NewFrame(void* window)
void ImGui_ImplX11_NewFrame()
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
@ -225,7 +228,7 @@ void ImGui_ImplX11_NewFrame(void* window)
int unused_int;
unsigned int unused_unsigned_int;
XGetGeometry(g_Display, (Window)window, &unused_window, &unused_int, &unused_int, &width, &height, &unused_unsigned_int, &unused_unsigned_int);
XGetGeometry(g_Display, (Window)g_Window, &unused_window, &unused_int, &unused_int, &width, &height, &unused_unsigned_int, &unused_unsigned_int);
io.DisplaySize.x = width;
io.DisplaySize.y = height;
@ -249,7 +252,7 @@ void ImGui_ImplX11_NewFrame(void* window)
// io.KeysDown[], io.MousePos, io.MouseDown[], io.MouseWheel: filled by the WndProc handler below.
// Update OS mouse position
ImGui_ImplX11_UpdateMousePos((Window)window);
ImGui_ImplX11_UpdateMousePos();
/*
// Update OS mouse cursor with the cursor requested by imgui
ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();

4
ImGui/impls/linux/imgui_impl_x11.h
View File

@ -9,9 +9,9 @@
#pragma once
IMGUI_IMPL_API bool ImGui_ImplX11_Init(void* display);
IMGUI_IMPL_API bool ImGui_ImplX11_Init(void* display, void* window);
IMGUI_IMPL_API void ImGui_ImplX11_Shutdown();
IMGUI_IMPL_API void ImGui_ImplX11_NewFrame(void* window);
IMGUI_IMPL_API void ImGui_ImplX11_NewFrame();
// Handler for Win32 messages, update mouse/keyboard data.
// You may or not need this for your implementation, but it can serve as reference for handling inputs.

123
overlay_experimental/linux/X11_Hook.cpp
View File

@ -41,14 +41,14 @@ void X11_Hook::prepareForOverlay(Display *display, Window wnd)
{
if (!initialized)
{
ImGui_ImplX11_Init(display);
ImGui_ImplX11_Init(display, (void*)wnd);
game_wnd = wnd;
initialized = true;
}
ImGui_ImplX11_NewFrame((void*)wnd);
ImGui_ImplX11_NewFrame();
}
/////////////////////////////////////////////////////////////////////////////////////
@ -68,6 +68,65 @@ bool IgnoreEvent(XEvent &event)
return false;
}
int X11_Hook::check_for_overlay(Display *d, int num_events)
{
static Time prev_time = {};
X11_Hook* inst = Inst();
if( inst->initialized )
{
XEvent event;
while(num_events)
{
//inst->_XPeekEvent(d, &event);
XPeekEvent(d, &event);
Steam_Overlay* overlay = get_steam_client()->steam_overlay;
bool show = overlay->ShowOverlay();
// Is the event is a key press
if (event.type == KeyPress)
{
// Tab is pressed and was not pressed before
//if (event.xkey.keycode == inst->_XKeysymToKeycode(d, XK_Tab) && event.xkey.state & ShiftMask)
if (event.xkey.keycode == XKeysymToKeycode(d, XK_Tab) && event.xkey.state & ShiftMask)
{
// if key TAB is held, don't make the overlay flicker :p
if( event.xkey.time != prev_time)
{
overlay->ShowOverlay(!overlay->ShowOverlay());
if (overlay->ShowOverlay())
show = true;
}
}
}
//else if(event.type == KeyRelease && event.xkey.keycode == inst->_XKeysymToKeycode(d, XK_Tab))
else if(event.type == KeyRelease && event.xkey.keycode == XKeysymToKeycode(d, XK_Tab))
{
prev_time = event.xkey.time;
}
if (show)
{
ImGui_ImplX11_EventHandler(event);
if (IgnoreEvent(event))
{
//inst->_XNextEvent(d, &event);
XNextEvent(d, &event);
--num_events;
}
else
break;
}
else
break;
}
}
return num_events;
}
int X11_Hook::MyXEventsQueued(Display *display, int mode)
{
X11_Hook* inst = X11_Hook::Inst();
@ -76,53 +135,9 @@ int X11_Hook::MyXEventsQueued(Display *display, int mode)
if( res )
{
static Time prev_time = {};
XEvent event;
//inst->_XPeekEvent(display, &event);
XPeekEvent(display, &event);
Steam_Overlay* overlay = get_steam_client()->steam_overlay;
bool show = overlay->ShowOverlay();
// Is the event is a key press
if (event.type == KeyPress)
{
// Tab is pressed and was not pressed before
//if (event.xkey.keycode == inst->_XKeysymToKeycode(display, XK_Tab) && event.xkey.state & ShiftMask)
if (event.xkey.keycode == XKeysymToKeycode(display, XK_Tab) && event.xkey.state & ShiftMask)
{
// if key TAB is held, don't make the overlay flicker :p
if( event.xkey.time != prev_time)
{
overlay->ShowOverlay(!overlay->ShowOverlay());
if (overlay->ShowOverlay())
show = true;
}
}
}
//else if(event.type == KeyRelease && event.xkey.keycode == inst->_XKeysymToKeycode(display, XK_Tab))
else if(event.type == KeyRelease && event.xkey.keycode == XKeysymToKeycode(display, XK_Tab))
{
prev_time = event.xkey.time;
}
if (show)
{
ImGui_ImplX11_EventHandler(event);
if (IgnoreEvent(event))
{
//inst->_XNextEvent(display, &event);
XNextEvent(display, &event);
return 0;
}
}
res = inst->check_for_overlay(display, res);
}
// XEventsQueued returns the num of events available.
// Usually, games tend to read all events queued before calling again XEventsQueued
// making us unavailable to intercept undesired events
return res;
}
@ -140,19 +155,9 @@ int X11_Hook::MyXPending(Display* display)
{
int res = Inst()->_XPending(display);
if( res && get_steam_client()->steam_overlay->ShowOverlay() )
if( res )
{
XEvent event;
//Inst()->_XPeekEvent(display, &event);
XPeekEvent(display, &event);
if( IgnoreEvent(event) )
{
ImGui_ImplX11_EventHandler(event);
//Inst()->_XNextEvent(display, &event);
XNextEvent(display, &event);
res = 0;
}
res = Inst()->check_for_overlay(display, res);
}
return res;

1
overlay_experimental/linux/X11_Hook.h
View File

@ -24,6 +24,7 @@ private:
// Functions
X11_Hook();
int check_for_overlay(Display *d, int num_events);
// Hook to X11 window messages