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Add get_screen_refresh_rate() to OS

Browse source 
This method can be used to get the refresh rate of a given screen.
It is supported on Windows, macOS, Linux, Android and iOS (but not
HTML5).
This commit is contained in:
Hugo Locurcio 2022-03-06 00:34:56 +01:00
parent 8975470bc2
commit cec7c908ca
No known key found for this signature in database
GPG key ID: 39E8F8BE30B0A49C
17 changed files with 177 additions and 1 deletions
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5
core/bind/core_bind.cpp
View file

@ -311,6 +311,10 @@ float _OS::get_screen_max_scale() const {
return OS::get_singleton()->get_screen_max_scale();
}
float _OS::get_screen_refresh_rate(int p_screen) const {
return OS::get_singleton()->get_screen_refresh_rate();
}
Point2 _OS::get_window_position() const {
return OS::get_singleton()->get_window_position();
}
@ -1267,6 +1271,7 @@ void _OS::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_screen_dpi", "screen"), &_OS::get_screen_dpi, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_screen_scale", "screen"), &_OS::get_screen_scale, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_screen_max_scale"), &_OS::get_screen_max_scale);
ClassDB::bind_method(D_METHOD("get_screen_refresh_rate", "screen"), &_OS::get_screen_refresh_rate, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_window_position"), &_OS::get_window_position);
ClassDB::bind_method(D_METHOD("set_window_position", "position"), &_OS::set_window_position);
ClassDB::bind_method(D_METHOD("get_window_size"), &_OS::get_window_size);

1
core/bind/core_bind.h
View file

@ -191,6 +191,7 @@ public:
virtual int get_screen_dpi(int p_screen = -1) const;
virtual float get_screen_scale(int p_screen = -1) const;
virtual float get_screen_max_scale() const;
virtual float get_screen_refresh_rate(int p_screen = -1) const;
virtual Point2 get_window_position() const;
virtual void set_window_position(const Point2 &p_position);
virtual Size2 get_max_window_size() const;

4
core/os/os.h
View file

@ -209,6 +209,9 @@ public:
virtual void open_midi_inputs();
virtual void close_midi_inputs();
// Returned by get_screen_refresh_rate if the method fails.
const float SCREEN_REFRESH_RATE_FALLBACK = -1.0;
virtual int get_screen_count() const { return 1; }
virtual int get_current_screen() const { return 0; }
virtual void set_current_screen(int p_screen) {}
@ -217,6 +220,7 @@ public:
virtual int get_screen_dpi(int p_screen = -1) const { return 72; }
virtual float get_screen_scale(int p_screen = -1) const { return 1.0; }
virtual float get_screen_max_scale() const { return 1.0; };
virtual float get_screen_refresh_rate(int p_screen = -1) const { return SCREEN_REFRESH_RATE_FALLBACK; };
virtual Point2 get_window_position() const { return Vector2(); }
virtual void set_window_position(const Point2 &p_position) {}
virtual Size2 get_max_window_size() const { return Size2(); };

14
doc/classes/OS.xml
View file

@ -408,6 +408,20 @@
Returns the position of the specified screen by index. If [code]screen[/code] is [code]-1[/code] (the default value), the current screen will be used.
</description>
</method>
<method name="get_screen_refresh_rate" qualifiers="const">
<return type="float" />
<argument index="0" name="screen" type="int" default="-1" />
<description>
Returns the current refresh rate of the specified screen. If [code]screen[/code] is [code]-1[/code] (the default value), the current screen will be used.
[b]Note:[/b] Returns [code]-1.0[/code] if Godot fails to find the refresh rate for the specified screen. On HTML5, [method get_screen_refresh_rate] will always return [code]-1.0[/code] as there is no way to retrieve the refresh rate on that platform.
To fallback to a default refresh rate if the method fails, try:
[codeblock]
var refresh_rate = OS.get_screen_refresh_rate()
if refresh_rate &lt; 0:
refresh_rate = 60.0
[/codeblock]
</description>
</method>
<method name="get_screen_scale" qualifiers="const">
<return type="float" />
<argument index="0" name="screen" type="int" default="-1" />

8
platform/android/java/lib/src/org/godotengine/godot/GodotIO.java
View file

@ -226,6 +226,14 @@ public class GodotIO {
return (int)(metrics.density * 160f);
}
public double getScreenRefreshRate(double fallback) {
Display display = activity.getWindowManager().getDefaultDisplay();
if (display != null) {
return display.getRefreshRate();
}
return fallback;
}
public int[] getWindowSafeArea() {
DisplayMetrics metrics = activity.getResources().getDisplayMetrics();
Display display = activity.getWindowManager().getDefaultDisplay();

14
platform/android/java_godot_io_wrapper.cpp
View file

@ -53,6 +53,7 @@ GodotIOJavaWrapper::GodotIOJavaWrapper(JNIEnv *p_env, jobject p_godot_io_instanc
_get_locale = p_env->GetMethodID(cls, "getLocale", "()Ljava/lang/String;");
_get_model = p_env->GetMethodID(cls, "getModel", "()Ljava/lang/String;");
_get_screen_DPI = p_env->GetMethodID(cls, "getScreenDPI", "()I");
_get_screen_refresh_rate = p_env->GetMethodID(cls, "getScreenRefreshRate", "(D)D");
_get_window_safe_area = p_env->GetMethodID(cls, "getWindowSafeArea", "()[I"),
_get_unique_id = p_env->GetMethodID(cls, "getUniqueID", "()Ljava/lang/String;");
_show_keyboard = p_env->GetMethodID(cls, "showKeyboard", "(Ljava/lang/String;ZIII)V");
@ -136,6 +137,19 @@ int GodotIOJavaWrapper::get_screen_dpi() {
}
}
float GodotIOJavaWrapper::get_screen_refresh_rate(float p_fallback) {
if (_get_screen_refresh_rate) {
JNIEnv *env = get_jni_env();
if (env == nullptr) {
ERR_PRINT("An error occurred while trying to get screen refresh rate.");
return p_fallback;
}
return (float)env->CallDoubleMethod(godot_io_instance, _get_screen_refresh_rate, (double)p_fallback);
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return p_fallback;
}
void GodotIOJavaWrapper::get_window_safe_area(int (&p_rect_xywh)[4]) {
if (_get_window_safe_area) {
JNIEnv *env = get_jni_env();

2
platform/android/java_godot_io_wrapper.h
View file

@ -51,6 +51,7 @@ private:
jmethodID _get_locale = 0;
jmethodID _get_model = 0;
jmethodID _get_screen_DPI = 0;
jmethodID _get_screen_refresh_rate = 0;
jmethodID _get_window_safe_area = 0;
jmethodID _get_unique_id = 0;
jmethodID _show_keyboard = 0;
@ -72,6 +73,7 @@ public:
String get_model();
int get_screen_dpi();
void get_window_safe_area(int (&p_rect_xywh)[4]);
float get_screen_refresh_rate(float p_fallback);
String get_unique_id();
bool has_vk();
void show_vk(const String &p_existing, bool p_multiline, int p_max_input_length, int p_cursor_start, int p_cursor_end);

4
platform/android/os_android.cpp
View file

@ -444,6 +444,10 @@ int OS_Android::get_screen_dpi(int p_screen) const {
return godot_io_java->get_screen_dpi();
}
float OS_Android::get_screen_refresh_rate(int p_screen) const {
return godot_io_java->get_screen_refresh_rate(OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK);
}
String OS_Android::get_data_path() const {
return get_user_data_dir();
}

1
platform/android/os_android.h
View file

@ -154,6 +154,7 @@ public:
virtual bool has_clipboard() const;
virtual String get_model_name() const;
virtual int get_screen_dpi(int p_screen = 0) const;
virtual float get_screen_refresh_rate(int p_screen = 0) const;
virtual bool get_window_per_pixel_transparency_enabled() const { return transparency_enabled; }
virtual void set_window_per_pixel_transparency_enabled(bool p_enabled) { ERR_FAIL_MSG("Setting per-pixel transparency is not supported at runtime, please set it in project settings instead."); }

1
platform/iphone/os_iphone.h
View file

@ -130,6 +130,7 @@ public:
virtual bool _check_internal_feature_support(const String &p_feature);
virtual int get_screen_dpi(int p_screen = -1) const;
virtual float get_screen_refresh_rate(int p_screen = -1) const;
void pencil_press(int p_idx, int p_x, int p_y, bool p_pressed, bool p_doubleclick);
void touch_press(int p_idx, int p_x, int p_y, bool p_pressed, bool p_doubleclick);

4
platform/iphone/os_iphone.mm
View file

@ -565,6 +565,10 @@ int OSIPhone::get_screen_dpi(int p_screen) const {
}
}
float OSIPhone::get_screen_refresh_rate(int p_screen) const {
return [UIScreen mainScreen].maximumFramesPerSecond;
}
Rect2 OSIPhone::get_window_safe_area() const {
if (@available(iOS 11, *)) {
UIEdgeInsets insets = UIEdgeInsetsZero;

1
platform/osx/os_osx.h
View file

@ -276,6 +276,7 @@ public:
virtual int get_screen_dpi(int p_screen = -1) const;
virtual float get_screen_scale(int p_screen = -1) const;
virtual float get_screen_max_scale() const;
virtual float get_screen_refresh_rate(int p_screen = -1) const;
virtual Point2 get_window_position() const;
virtual void set_window_position(const Point2 &p_position);

16
platform/osx/os_osx.mm
View file

@ -2564,6 +2564,22 @@ int OS_OSX::get_screen_dpi(int p_screen) const {
return 72;
}
float OS_OSX::get_screen_refresh_rate(int p_screen) const {
if (p_screen < 0) {
p_screen = get_current_screen();
}
NSArray *screenArray = [NSScreen screens];
if ((NSUInteger)p_screen < [screenArray count]) {
NSDictionary *description = [[screenArray objectAtIndex:p_screen] deviceDescription];
const CGDisplayModeRef displayMode = CGDisplayCopyDisplayMode([[description objectForKey:@"NSScreenNumber"] unsignedIntValue]);
const double displayRefreshRate = CGDisplayModeGetRefreshRate(displayMode);
return (float)displayRefreshRate;
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK;
}
Size2 OS_OSX::get_screen_size(int p_screen) const {
if (p_screen < 0) {
p_screen = get_current_screen();

42
platform/windows/os_windows.cpp
View file

@ -1954,6 +1954,12 @@ typedef struct {
int dpi;
} EnumDpiData;
typedef struct {
int count;
int screen;
float rate;
} EnumRefreshRateData;
static BOOL CALLBACK _MonitorEnumProcDpi(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData) {
EnumDpiData *data = (EnumDpiData *)dwData;
if (data->count == data->screen) {
@ -1964,12 +1970,46 @@ static BOOL CALLBACK _MonitorEnumProcDpi(HMONITOR hMonitor, HDC hdcMonitor, LPRE
return TRUE;
}
static BOOL CALLBACK _MonitorEnumProcRefreshRate(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData) {
EnumRefreshRateData *data = (EnumRefreshRateData *)dwData;
if (data->count == data->screen) {
MONITORINFOEXW minfo;
memset(&minfo, 0, sizeof(minfo));
minfo.cbSize = sizeof(minfo);
GetMonitorInfoW(hMonitor, &minfo);
DEVMODEW dm;
memset(&dm, 0, sizeof(dm));
dm.dmSize = sizeof(dm);
EnumDisplaySettingsW(minfo.szDevice, ENUM_CURRENT_SETTINGS, &dm);
data->rate = dm.dmDisplayFrequency;
}
data->count++;
return TRUE;
}
int OS_Windows::get_screen_dpi(int p_screen) const {
EnumDpiData data = { 0, p_screen == -1 ? get_current_screen() : p_screen, 72 };
EnumDpiData data = {
0,
p_screen == -1 ? get_current_screen() : p_screen,
72,
};
EnumDisplayMonitors(NULL, NULL, _MonitorEnumProcDpi, (LPARAM)&data);
return data.dpi;
}
float OS_Windows::get_screen_refresh_rate(int p_screen) const {
EnumRefreshRateData data = {
0,
p_screen == -1 ? get_current_screen() : p_screen,
OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK,
};
EnumDisplayMonitors(nullptr, nullptr, _MonitorEnumProcRefreshRate, (LPARAM)&data);
return data.rate;
}
Point2 OS_Windows::get_window_position() const {
if (minimized) {
return last_pos;

1
platform/windows/os_windows.h
View file

@ -445,6 +445,7 @@ public:
virtual Point2 get_screen_position(int p_screen = -1) const;
virtual Size2 get_screen_size(int p_screen = -1) const;
virtual int get_screen_dpi(int p_screen = -1) const;
virtual float get_screen_refresh_rate(int p_screen = -1) const;
virtual Point2 get_window_position() const;
virtual void set_window_position(const Point2 &p_position);

59
platform/x11/os_x11.cpp
View file

@ -1323,6 +1323,65 @@ int OS_X11::get_screen_dpi(int p_screen) const {
return 96;
}
float OS_X11::get_screen_refresh_rate(int p_screen) const {
if (p_screen == -1) {
p_screen = get_current_screen();
}
//invalid screen?
ERR_FAIL_INDEX_V(p_screen, get_screen_count(), OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK);
//Use xrandr to get screen refresh rate.
if (xrandr_ext_ok) {
XRRScreenResources *screen_info = XRRGetScreenResources(x11_display, x11_window);
if (screen_info) {
RRMode current_mode = 0;
xrr_monitor_info *monitors = nullptr;
if (xrr_get_monitors) {
int count = 0;
monitors = xrr_get_monitors(x11_display, x11_window, true, &count);
ERR_FAIL_INDEX_V(p_screen, count, OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK);
} else {
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK;
}
bool found_active_mode = false;
for (int crtc = 0; crtc < screen_info->ncrtc; crtc++) { // Loop through outputs to find which one is currently outputting.
XRRCrtcInfo *monitor_info = XRRGetCrtcInfo(x11_display, screen_info, screen_info->crtcs[crtc]);
if (monitor_info->x != monitors[p_screen].x || monitor_info->y != monitors[p_screen].y) { // If X and Y aren't the same as the monitor we're looking for, this isn't the right monitor. Continue.
continue;
}
if (monitor_info->mode != None) {
current_mode = monitor_info->mode;
found_active_mode = true;
break;
}
}
if (found_active_mode) {
for (int mode = 0; mode < screen_info->nmode; mode++) {
XRRModeInfo m_info = screen_info->modes[mode];
if (m_info.id == current_mode) {
// Snap to nearest 0.01 to stay consistent with other platforms.
return Math::stepify((float)m_info.dotClock / ((float)m_info.hTotal * (float)m_info.vTotal), 0.01);
}
}
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate."); // We should have returned the refresh rate by now. An error must have occurred.
return OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK;
} else {
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK;
}
}
ERR_PRINT("An error occurred while trying to get the screen refresh rate.");
return OS::get_singleton()->SCREEN_REFRESH_RATE_FALLBACK;
}
Point2 OS_X11::get_window_position() const {
int x, y;
Window child;

1
platform/x11/os_x11.h
View file

@ -296,6 +296,7 @@ public:
virtual Point2 get_screen_position(int p_screen = -1) const;
virtual Size2 get_screen_size(int p_screen = -1) const;
virtual int get_screen_dpi(int p_screen = -1) const;
virtual float get_screen_refresh_rate(int p_screen = -1) const;
virtual Point2 get_window_position() const;
virtual void set_window_position(const Point2 &p_position);
virtual Size2 get_window_size() const;