Update bundled glfw

glfw/cocoa_platform.h

@@ -88,9 +88,10 @@ typedef struct _GLFWwindowNS
 
     GLFWbool        maximized;
 
-    // Cached window and framebuffer sizes used to filter out duplicate events
+    // Cached window properties to filter out duplicate events
     int             width, height;
     int             fbWidth, fbHeight;
+    float           xscale, yscale;
 
     // The total sum of the distances the cursor has been warped
     // since the last cursor motion event was processed

glfw/cocoa_window.m

@@ -574,6 +574,16 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
         window->ns.fbHeight = fbRect.size.height;
         _glfwInputFramebufferSize(window, fbRect.size.width, fbRect.size.height);
     }
+
+    const float xscale = fbRect.size.width / contentRect.size.width;
+    const float yscale = fbRect.size.height / contentRect.size.height;
+
+    if (xscale != window->ns.xscale || yscale != window->ns.yscale)
+    {
+        window->ns.xscale = xscale;
+        window->ns.yscale = yscale;
+        _glfwInputWindowContentScale(window, xscale, yscale);
+    }
 }
 
 - (void)drawRect:(NSRect)rect
@@ -1478,6 +1488,20 @@ int _glfwPlatformWindowMaximized(_GLFWwindow* window)
     return [window->ns.object isZoomed];
 }
 
+int _glfwPlatformWindowHovered(_GLFWwindow* window)
+{
+    const NSPoint point = [NSEvent mouseLocation];
+
+    if ([NSWindow windowNumberAtPoint:point belowWindowWithWindowNumber:0] !=
+        [window->ns.object windowNumber])
+    {
+        return GLFW_FALSE;
+    }
+
+    return NSPointInRect(point,
+        [window->ns.object convertRectToScreen:[window->ns.view bounds]]);
+}
+
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
 {
     return ![window->ns.object isOpaque] && ![window->ns.view isOpaque];

glfw/context.c

@@ -321,10 +321,11 @@ const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired,
     return closest;
 }
 
-GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
+GLFWbool _glfwRefreshContextAttribs(_GLFWwindow* window,
+                                    const _GLFWctxconfig* ctxconfig)
 {
     int i;
-    _GLFWwindow* window;
+    _GLFWwindow* previous;
     const char* version;
     const char* prefixes[] =
     {
@@ -334,11 +335,12 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
         NULL
     };
 
-    window = _glfwPlatformGetTls(&_glfw.contextSlot);
-
     window->context.source = ctxconfig->source;
     window->context.client = GLFW_OPENGL_API;
 
+    previous = _glfwPlatformGetTls(&_glfw.contextSlot);;
+    glfwMakeContextCurrent((GLFWwindow*) window);
+
     window->context.GetIntegerv = (PFNGLGETINTEGERVPROC)
         window->context.getProcAddress("glGetIntegerv");
     window->context.GetString = (PFNGLGETSTRINGPROC)
@@ -346,6 +348,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
     if (!window->context.GetIntegerv || !window->context.GetString)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR, "Entry point retrieval is broken");
+        glfwMakeContextCurrent((GLFWwindow*) previous);
         return GLFW_FALSE;
     }
 
@@ -363,6 +366,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
                             "OpenGL ES version string retrieval is broken");
         }
 
+        glfwMakeContextCurrent((GLFWwindow*) previous);
         return GLFW_FALSE;
     }
 
@@ -394,6 +398,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
                             "No version found in OpenGL ES version string");
         }
 
+        glfwMakeContextCurrent((GLFWwindow*) previous);
         return GLFW_FALSE;
     }
 
@@ -423,6 +428,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
                             window->context.major, window->context.minor);
         }
 
+        glfwMakeContextCurrent((GLFWwindow*) previous);
         return GLFW_FALSE;
     }
 
@@ -438,6 +444,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
         {
             _glfwInputError(GLFW_PLATFORM_ERROR,
                             "Entry point retrieval is broken");
+            glfwMakeContextCurrent((GLFWwindow*) previous);
             return GLFW_FALSE;
         }
     }
@@ -544,6 +551,7 @@ GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig)
         window->context.swapBuffers(window);
     }
 
+    glfwMakeContextCurrent((GLFWwindow*) previous);
     return GLFW_TRUE;
 }
 

glfw/glfw3.h

@@ -814,6 +814,7 @@ extern "C" {
  *  [window attribute](@ref GLFW_TRANSPARENT_FRAMEBUFFER_attrib).
  */
 #define GLFW_TRANSPARENT_FRAMEBUFFER 0x0002000A
+#define GLFW_HOVERED                0x0002000B
 
 /*! @brief Framebuffer bit depth hint.
  *
@@ -1278,6 +1279,24 @@ typedef void (* GLFWwindowmaximizefun)(GLFWwindow*,int);
  */
 typedef void (* GLFWframebuffersizefun)(GLFWwindow*,int,int);
 
+/*! @brief The function signature for window content scale callbacks.
+ *
+ *  This is the function signature for window content scale callback
+ *  functions.
+ *
+ *  @param[in] window The window whose content scale changed.
+ *  @param[in] xscale The new x-axis content scale of the window.
+ *  @param[in] yscale The new y-axis content scale of the window.
+ *
+ *  @sa @ref window_scale
+ *  @sa @ref glfwSetWindowContentScaleCallback
+ *
+ *  @since Added in version 3.3.
+ *
+ *  @ingroup window
+ */
+typedef void (* GLFWwindowcontentscalefun)(GLFWwindow*,float,float);
+
 /*! @brief The function signature for mouse button callbacks.
  *
  *  This is the function signature for mouse button callback functions.
@@ -2913,6 +2932,7 @@ GLFWAPI void glfwGetWindowFrameSize(GLFWwindow* window, int* left, int* top, int
  *  @thread_safety This function must only be called from the main thread.
  *
  *  @sa @ref window_scale
+ *  @sa @ref glfwSetWindowContentScaleCallback
  *  @sa @ref glfwGetMonitorContentScale
  *
  *  @since Added in version 3.3.
@@ -3602,6 +3622,30 @@ GLFWAPI GLFWwindowmaximizefun glfwSetWindowMaximizeCallback(GLFWwindow* window,
  */
 GLFWAPI GLFWframebuffersizefun glfwSetFramebufferSizeCallback(GLFWwindow* window, GLFWframebuffersizefun cbfun);
 
+/*! @brief Sets the window content scale callback for the specified window.
+ *
+ *  This function sets the window content scale callback of the specified window,
+ *  which is called when the content scale of the specified window changes.
+ *
+ *  @param[in] window The window whose callback to set.
+ *  @param[in] cbfun The new callback, or `NULL` to remove the currently set
+ *  callback.
+ *  @return The previously set callback, or `NULL` if no callback was set or the
+ *  library had not been [initialized](@ref intro_init).
+ *
+ *  @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
+ *
+ *  @thread_safety This function must only be called from the main thread.
+ *
+ *  @sa @ref window_scale
+ *  @sa @ref glfwGetWindowContentScale
+ *
+ *  @since Added in version 3.3.
+ *
+ *  @ingroup window
+ */
+GLFWAPI GLFWwindowcontentscalefun glfwSetWindowContentScaleCallback(GLFWwindow* window, GLFWwindowcontentscalefun cbfun);
+
 /*! @brief Processes all pending events.
  *
  *  This function processes only those events that are already in the event

glfw/internal.h

@@ -437,6 +437,7 @@ struct _GLFWwindow
         GLFWwindowiconifyfun    iconify;
         GLFWwindowmaximizefun   maximize;
         GLFWframebuffersizefun  fbsize;
+        GLFWwindowcontentscalefun scale;
         GLFWmousebuttonfun      mouseButton;
         GLFWcursorposfun        cursorPos;
         GLFWcursorenterfun      cursorEnter;
@@ -690,6 +691,7 @@ int _glfwPlatformWindowFocused(_GLFWwindow* window);
 int _glfwPlatformWindowIconified(_GLFWwindow* window);
 int _glfwPlatformWindowVisible(_GLFWwindow* window);
 int _glfwPlatformWindowMaximized(_GLFWwindow* window);
+int _glfwPlatformWindowHovered(_GLFWwindow* window);
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window);
 float _glfwPlatformGetWindowOpacity(_GLFWwindow* window);
 void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled);
@@ -755,6 +757,14 @@ void _glfwInputWindowSize(_GLFWwindow* window, int width, int height);
  */
 void _glfwInputFramebufferSize(_GLFWwindow* window, int width, int height);
 
+/*! @brief Notifies shared code that a window content scale has changed.
+ *  @param[in] window The window that received the event.
+ *  @param[in] xscale The new x-axis content scale of the window.
+ *  @param[in] yscale The new y-axis content scale of the window.
+ *  @ingroup event
+ */
+void _glfwInputWindowContentScale(_GLFWwindow* window, float xscale, float yscale);
+
 /*! @brief Notifies shared code that a window has been iconified or restored.
  *  @param[in] window The window that received the event.
  *  @param[in] iconified `GLFW_TRUE` if the window was iconified, or
@@ -955,7 +965,8 @@ const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired,
  *  unusable.
  *  @ingroup utility
  */
-GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig);
+GLFWbool _glfwRefreshContextAttribs(_GLFWwindow* window,
+                                    const _GLFWctxconfig* ctxconfig);
 
 /*! @brief Checks whether the desired context attributes are valid.
  *  @param[in] ctxconfig The context attributes to check.

glfw/null_window.c

@@ -165,6 +165,11 @@ int _glfwPlatformWindowMaximized(_GLFWwindow* window)
     return GLFW_FALSE;
 }
 
+int _glfwPlatformWindowHovered(_GLFWwindow* window)
+{
+    return GLFW_FALSE;
+}
+
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
 {
     return GLFW_FALSE;

glfw/wgl_context.c

@@ -329,21 +329,52 @@ static void destroyContextWGL(_GLFWwindow* window)
     }
 }
 
-// Initialize WGL-specific extensions
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW internal API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+// Initialize WGL
 //
-static void loadWGLExtensions(void)
+GLFWbool _glfwInitWGL(void)
 {
     PIXELFORMATDESCRIPTOR pfd;
-    HGLRC rc;
+    HGLRC prc, rc;
-    HDC dc = GetDC(_glfw.win32.helperWindowHandle);;
+    HDC pdc, dc;
 
-    _glfw.wgl.extensionsLoaded = GLFW_TRUE;
+    if (_glfw.wgl.instance)
+        return GLFW_TRUE;
+
+    _glfw.wgl.instance = LoadLibraryA("opengl32.dll");
+    if (!_glfw.wgl.instance)
+    {
+        _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
+                             "WGL: Failed to load opengl32.dll");
+        return GLFW_FALSE;
+    }
+
+    _glfw.wgl.CreateContext = (PFN_wglCreateContext)
+        GetProcAddress(_glfw.wgl.instance, "wglCreateContext");
+    _glfw.wgl.DeleteContext = (PFN_wglDeleteContext)
+        GetProcAddress(_glfw.wgl.instance, "wglDeleteContext");
+    _glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress)
+        GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress");
+    _glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC)
+        GetProcAddress(_glfw.wgl.instance, "wglGetCurrentDC");
+    _glfw.wgl.GetCurrentContext = (PFN_wglGetCurrentContext)
+        GetProcAddress(_glfw.wgl.instance, "wglGetCurrentContext");
+    _glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent)
+        GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent");
+    _glfw.wgl.ShareLists = (PFN_wglShareLists)
+        GetProcAddress(_glfw.wgl.instance, "wglShareLists");
 
     // NOTE: A dummy context has to be created for opengl32.dll to load the
     //       OpenGL ICD, from which we can then query WGL extensions
     // NOTE: This code will accept the Microsoft GDI ICD; accelerated context
     //       creation failure occurs during manual pixel format enumeration
 
+    dc = GetDC(_glfw.win32.helperWindowHandle);;
+
     ZeroMemory(&pfd, sizeof(pfd));
     pfd.nSize = sizeof(pfd);
     pfd.nVersion = 1;
@@ -355,7 +386,7 @@ static void loadWGLExtensions(void)
     {
         _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                              "WGL: Failed to set pixel format for dummy context");
-        return;
+        return GLFW_FALSE;
     }
 
     rc = wglCreateContext(dc);
@@ -363,15 +394,19 @@ static void loadWGLExtensions(void)
     {
         _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                              "WGL: Failed to create dummy context");
-        return;
+        return GLFW_FALSE;
     }
 
+    pdc = wglGetCurrentDC();
+    prc = wglGetCurrentContext();
+
     if (!wglMakeCurrent(dc, rc))
     {
         _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                              "WGL: Failed to make dummy context current");
+        wglMakeCurrent(pdc, prc);
         wglDeleteContext(rc);
-        return;
+        return GLFW_FALSE;
     }
 
     // NOTE: Functions must be loaded first as they're needed to retrieve the
@@ -414,43 +449,8 @@ static void loadWGLExtensions(void)
     _glfw.wgl.ARB_context_flush_control =
         extensionSupportedWGL("WGL_ARB_context_flush_control");
 
-    wglMakeCurrent(dc, NULL);
+    wglMakeCurrent(pdc, prc);
     wglDeleteContext(rc);
-}
-
-
-//////////////////////////////////////////////////////////////////////////
-//////                       GLFW internal API                      //////
-//////////////////////////////////////////////////////////////////////////
-
-// Initialize WGL
-//
-GLFWbool _glfwInitWGL(void)
-{
-    if (_glfw.wgl.instance)
-        return GLFW_TRUE;
-
-    _glfw.wgl.instance = LoadLibraryA("opengl32.dll");
-    if (!_glfw.wgl.instance)
-    {
-        _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
-                             "WGL: Failed to load opengl32.dll");
-        return GLFW_FALSE;
-    }
-
-    _glfw.wgl.CreateContext = (PFN_wglCreateContext)
-        GetProcAddress(_glfw.wgl.instance, "wglCreateContext");
-    _glfw.wgl.DeleteContext = (PFN_wglDeleteContext)
-        GetProcAddress(_glfw.wgl.instance, "wglDeleteContext");
-    _glfw.wgl.GetProcAddress = (PFN_wglGetProcAddress)
-        GetProcAddress(_glfw.wgl.instance, "wglGetProcAddress");
-    _glfw.wgl.GetCurrentDC = (PFN_wglGetCurrentDC)
-        GetProcAddress(_glfw.wgl.instance, "wglGetCurrentDC");
-    _glfw.wgl.MakeCurrent = (PFN_wglMakeCurrent)
-        GetProcAddress(_glfw.wgl.instance, "wglMakeCurrent");
-    _glfw.wgl.ShareLists = (PFN_wglShareLists)
-        GetProcAddress(_glfw.wgl.instance, "wglShareLists");
-
     return GLFW_TRUE;
 }
 
@@ -480,9 +480,6 @@ GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
     PIXELFORMATDESCRIPTOR pfd;
     HGLRC share = NULL;
 
-    if (!_glfw.wgl.extensionsLoaded)
-        loadWGLExtensions();
-
     if (ctxconfig->share)
         share = ctxconfig->share->context.wgl.handle;
 

glfw/wgl_context.h

@@ -86,6 +86,7 @@ typedef HGLRC (WINAPI * PFN_wglCreateContext)(HDC);
 typedef BOOL (WINAPI * PFN_wglDeleteContext)(HGLRC);
 typedef PROC (WINAPI * PFN_wglGetProcAddress)(LPCSTR);
 typedef HDC (WINAPI * PFN_wglGetCurrentDC)(void);
+typedef HGLRC (WINAPI * PFN_wglGetCurrentContext)(void);
 typedef BOOL (WINAPI * PFN_wglMakeCurrent)(HDC,HGLRC);
 typedef BOOL (WINAPI * PFN_wglShareLists)(HGLRC,HGLRC);
 
@@ -94,6 +95,7 @@ typedef BOOL (WINAPI * PFN_wglShareLists)(HGLRC,HGLRC);
 #define wglDeleteContext _glfw.wgl.DeleteContext
 #define wglGetProcAddress _glfw.wgl.GetProcAddress
 #define wglGetCurrentDC _glfw.wgl.GetCurrentDC
+#define wglGetCurrentContext _glfw.wgl.GetCurrentContext
 #define wglMakeCurrent _glfw.wgl.MakeCurrent
 #define wglShareLists _glfw.wgl.ShareLists
 
@@ -124,11 +126,10 @@ typedef struct _GLFWlibraryWGL
     PFN_wglDeleteContext                DeleteContext;
     PFN_wglGetProcAddress               GetProcAddress;
     PFN_wglGetCurrentDC                 GetCurrentDC;
+    PFN_wglGetCurrentContext            GetCurrentContext;
     PFN_wglMakeCurrent                  MakeCurrent;
     PFN_wglShareLists                   ShareLists;
 
-    GLFWbool                            extensionsLoaded;
-
     PFNWGLSWAPINTERVALEXTPROC           SwapIntervalEXT;
     PFNWGLGETPIXELFORMATATTRIBIVARBPROC GetPixelFormatAttribivARB;
     PFNWGLGETEXTENSIONSSTRINGEXTPROC    GetExtensionsStringEXT;

glfw/win32_init.c

@@ -351,9 +351,10 @@ static HWND createHelperWindow(void)
         dbi.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
         dbi.dbcc_classguid = GUID_DEVINTERFACE_HID;
 
-        RegisterDeviceNotificationW(window,
+        _glfw.win32.deviceNotificationHandle =
-                                    (DEV_BROADCAST_HDR*) &dbi,
+            RegisterDeviceNotificationW(window,
-                                    DEVICE_NOTIFY_WINDOW_HANDLE);
+                                        (DEV_BROADCAST_HDR*) &dbi,
+                                        DEVICE_NOTIFY_WINDOW_HANDLE);
     }
 
     while (PeekMessageW(&msg, _glfw.win32.helperWindowHandle, 0, 0, PM_REMOVE))
@@ -543,6 +544,9 @@ int _glfwPlatformInit(void)
 
 void _glfwPlatformTerminate(void)
 {
+    if (_glfw.win32.deviceNotificationHandle)
+        UnregisterDeviceNotification(_glfw.win32.deviceNotificationHandle);
+
     if (_glfw.win32.helperWindowHandle)
         DestroyWindow(_glfw.win32.helperWindowHandle);
 

glfw/win32_platform.h

@@ -288,6 +288,7 @@ typedef struct _GLFWwindowWin32
 typedef struct _GLFWlibraryWin32
 {
     HWND                helperWindowHandle;
+    HDEVNOTIFY          deviceNotificationHandle;
     DWORD               foregroundLockTimeout;
     int                 acquiredMonitorCount;
     char*               clipboardString;

glfw/win32_window.c

@@ -996,6 +996,14 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
             return 0;
         }
 
+        case WM_DPICHANGED:
+        {
+            const float xscale = HIWORD(wParam) / 96.f;
+            const float yscale = LOWORD(wParam) / 96.f;
+            _glfwInputWindowContentScale(window, xscale, yscale);
+            break;
+        }
+
         case WM_SETCURSOR:
         {
             if (LOWORD(lParam) == HTCLIENT)
@@ -1451,7 +1459,7 @@ void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
 
 void _glfwPlatformShowWindow(_GLFWwindow* window)
 {
-    ShowWindow(window->win32.handle, SW_SHOW);
+    ShowWindow(window->win32.handle, SW_SHOWNA);
 }
 
 void _glfwPlatformHideWindow(_GLFWwindow* window)
@@ -1575,6 +1583,11 @@ int _glfwPlatformWindowMaximized(_GLFWwindow* window)
     return IsZoomed(window->win32.handle);
 }
 
+int _glfwPlatformWindowHovered(_GLFWwindow* window)
+{
+    return cursorInClientArea(window);
+}
+
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
 {
     return window->win32.transparent && _glfwIsCompositionEnabledWin32();

glfw/window.c

@@ -94,6 +94,12 @@ void _glfwInputFramebufferSize(_GLFWwindow* window, int width, int height)
         window->callbacks.fbsize((GLFWwindow*) window, width, height);
 }
 
+void _glfwInputWindowContentScale(_GLFWwindow* window, float xscale, float yscale)
+{
+    if (window->callbacks.scale)
+        window->callbacks.scale((GLFWwindow*) window, xscale, yscale);
+}
+
 void _glfwInputWindowDamage(_GLFWwindow* window)
 {
     if (window->callbacks.refresh)
@@ -127,7 +133,6 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     _GLFWctxconfig ctxconfig;
     _GLFWwndconfig wndconfig;
     _GLFWwindow* window;
-    _GLFWwindow* previous;
 
     assert(title != NULL);
     assert(width >= 0);
@@ -191,33 +196,20 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     window->numer       = GLFW_DONT_CARE;
     window->denom       = GLFW_DONT_CARE;
 
-    // Save the currently current context so it can be restored later
-    previous = _glfwPlatformGetTls(&_glfw.contextSlot);
-    if (ctxconfig.client != GLFW_NO_API)
-        glfwMakeContextCurrent(NULL);
-
     // Open the actual window and create its context
     if (!_glfwPlatformCreateWindow(window, &wndconfig, &ctxconfig, &fbconfig))
     {
-        glfwMakeContextCurrent((GLFWwindow*) previous);
         glfwDestroyWindow((GLFWwindow*) window);
         return NULL;
     }
 
     if (ctxconfig.client != GLFW_NO_API)
     {
-        window->context.makeCurrent(window);
+        if (!_glfwRefreshContextAttribs(window, &ctxconfig))
-
-        // Retrieve the actual (as opposed to requested) context attributes
-        if (!_glfwRefreshContextAttribs(&ctxconfig))
         {
-            glfwMakeContextCurrent((GLFWwindow*) previous);
             glfwDestroyWindow((GLFWwindow*) window);
             return NULL;
         }
-
-        // Restore the previously current context (or NULL)
-        glfwMakeContextCurrent((GLFWwindow*) previous);
     }
 
     if (!window->monitor)
@@ -803,6 +795,8 @@ GLFWAPI int glfwGetWindowAttrib(GLFWwindow* handle, int attrib)
             return _glfwPlatformWindowVisible(window);
         case GLFW_MAXIMIZED:
             return _glfwPlatformWindowMaximized(window);
+        case GLFW_HOVERED:
+            return _glfwPlatformWindowHovered(window);
         case GLFW_TRANSPARENT_FRAMEBUFFER:
             return _glfwPlatformFramebufferTransparent(window);
         case GLFW_RESIZABLE:
@@ -1037,6 +1031,17 @@ GLFWAPI GLFWframebuffersizefun glfwSetFramebufferSizeCallback(GLFWwindow* handle
     return cbfun;
 }
 
+GLFWAPI GLFWwindowcontentscalefun glfwSetWindowContentScaleCallback(GLFWwindow* handle,
+                                                                    GLFWwindowcontentscalefun cbfun)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+    assert(window != NULL);
+
+    _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
+    _GLFW_SWAP_POINTERS(window->callbacks.scale, cbfun);
+    return cbfun;
+}
+
 GLFWAPI void glfwPollEvents(void)
 {
     _GLFW_REQUIRE_INIT();

glfw/wl_init.c

@@ -54,6 +54,8 @@ static void pointerHandleEnter(void* data,
     _glfw.wl.pointerSerial = serial;
     _glfw.wl.pointerFocus = window;
 
+    window->wl.hovered = GLFW_TRUE;
+
     _glfwPlatformSetCursor(window, window->wl.currentCursor);
     _glfwInputCursorEnter(window, GLFW_TRUE);
 }
@@ -68,6 +70,8 @@ static void pointerHandleLeave(void* data,
     if (!window)
         return;
 
+    window->wl.hovered = GLFW_FALSE;
+
     _glfw.wl.pointerSerial = serial;
     _glfw.wl.pointerFocus = NULL;
     _glfwInputCursorEnter(window, GLFW_FALSE);
@@ -771,15 +775,22 @@ void _glfwPlatformTerminate(void)
     _glfwTerminateJoysticksLinux();
 
 #ifdef HAVE_XKBCOMMON_COMPOSE_H
-    xkb_compose_state_unref(_glfw.wl.xkb.composeState);
+    if (_glfw.wl.xkb.composeState)
+        xkb_compose_state_unref(_glfw.wl.xkb.composeState);
 #endif
 
-    xkb_keymap_unref(_glfw.wl.xkb.keymap);
+    if (_glfw.wl.xkb.keymap)
-    xkb_state_unref(_glfw.wl.xkb.state);
+        xkb_keymap_unref(_glfw.wl.xkb.keymap);
-    xkb_context_unref(_glfw.wl.xkb.context);
+    if (_glfw.wl.xkb.state)
+        xkb_state_unref(_glfw.wl.xkb.state);
+    if (_glfw.wl.xkb.context)
+        xkb_context_unref(_glfw.wl.xkb.context);
 
-    dlclose(_glfw.wl.xkb.handle);
+    if (_glfw.wl.xkb.handle)
-    _glfw.wl.xkb.handle = NULL;
+    {
+        _glfw_dlclose(_glfw.wl.xkb.handle);
+        _glfw.wl.xkb.handle = NULL;
+    }
 
     if (_glfw.wl.cursorTheme)
         wl_cursor_theme_destroy(_glfw.wl.cursorTheme);

glfw/wl_platform.h

@@ -117,6 +117,7 @@ typedef struct _GLFWwindowWayland
     int                         width, height;
     GLFWbool                    visible;
     GLFWbool                    maximized;
+    GLFWbool                    hovered;
     GLFWbool                    transparent;
     struct wl_surface*          surface;
     struct wl_egl_window*       native;

glfw/wl_window.c

@@ -125,6 +125,7 @@ static void checkScaleChange(_GLFWwindow* window)
         wl_surface_set_buffer_scale(window->wl.surface, scale);
         wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
         _glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
+        _glfwInputWindowContentScale(window, scale, scale);
     }
 }
 
@@ -700,6 +701,11 @@ int _glfwPlatformWindowMaximized(_GLFWwindow* window)
     return window->wl.maximized;
 }
 
+int _glfwPlatformWindowHovered(_GLFWwindow* window)
+{
+    return window->wl.hovered;
+}
+
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
 {
     return window->wl.transparent;

glfw/x11_window.c

@@ -2458,6 +2458,28 @@ int _glfwPlatformWindowMaximized(_GLFWwindow* window)
     return maximized;
 }
 
+int _glfwPlatformWindowHovered(_GLFWwindow* window)
+{
+    Window w = _glfw.x11.root;
+    while (w)
+    {
+        Window root;
+        int rootX, rootY, childX, childY;
+        unsigned int mask;
+
+        if (!XQueryPointer(_glfw.x11.display, w,
+                           &root, &w, &rootX, &rootY, &childX, &childY, &mask))
+        {
+            return GLFW_FALSE;
+        }
+
+        if (w == window->x11.handle)
+            return GLFW_TRUE;
+    }
+
+    return GLFW_FALSE;
+}
+
 int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
 {
     if (!window->x11.transparent)

kitty/glfw-wrapper.c

@@ -203,6 +203,9 @@ load_glfw(const char* path) {
     *(void **) (&glfwSetFramebufferSizeCallback_impl) = dlsym(handle, "glfwSetFramebufferSizeCallback");
     if (glfwSetFramebufferSizeCallback_impl == NULL) fail("Failed to load glfw function glfwSetFramebufferSizeCallback with error: %s", dlerror());
 
+    *(void **) (&glfwSetWindowContentScaleCallback_impl) = dlsym(handle, "glfwSetWindowContentScaleCallback");
+    if (glfwSetWindowContentScaleCallback_impl == NULL) fail("Failed to load glfw function glfwSetWindowContentScaleCallback with error: %s", dlerror());
+
     *(void **) (&glfwPollEvents_impl) = dlsym(handle, "glfwPollEvents");
     if (glfwPollEvents_impl == NULL) fail("Failed to load glfw function glfwPollEvents with error: %s", dlerror());
 

kitty/glfw-wrapper.h

@@ -572,6 +572,7 @@
  *  [window attribute](@ref GLFW_TRANSPARENT_FRAMEBUFFER_attrib).
  */
 #define GLFW_TRANSPARENT_FRAMEBUFFER 0x0002000A
+#define GLFW_HOVERED                0x0002000B
 
 /*! @brief Framebuffer bit depth hint.
  *
@@ -1036,6 +1037,24 @@ typedef void (* GLFWwindowmaximizefun)(GLFWwindow*,int);
  */
 typedef void (* GLFWframebuffersizefun)(GLFWwindow*,int,int);
 
+/*! @brief The function signature for window content scale callbacks.
+ *
+ *  This is the function signature for window content scale callback
+ *  functions.
+ *
+ *  @param[in] window The window whose content scale changed.
+ *  @param[in] xscale The new x-axis content scale of the window.
+ *  @param[in] yscale The new y-axis content scale of the window.
+ *
+ *  @sa @ref window_scale
+ *  @sa @ref glfwSetWindowContentScaleCallback
+ *
+ *  @since Added in version 3.3.
+ *
+ *  @ingroup window
+ */
+typedef void (* GLFWwindowcontentscalefun)(GLFWwindow*,float,float);
+
 /*! @brief The function signature for mouse button callbacks.
  *
  *  This is the function signature for mouse button callback functions.
@@ -1620,6 +1639,10 @@ typedef GLFWframebuffersizefun (*glfwSetFramebufferSizeCallback_func)(GLFWwindow
 glfwSetFramebufferSizeCallback_func glfwSetFramebufferSizeCallback_impl;
 #define glfwSetFramebufferSizeCallback glfwSetFramebufferSizeCallback_impl
 
+typedef GLFWwindowcontentscalefun (*glfwSetWindowContentScaleCallback_func)(GLFWwindow*, GLFWwindowcontentscalefun);
+glfwSetWindowContentScaleCallback_func glfwSetWindowContentScaleCallback_impl;
+#define glfwSetWindowContentScaleCallback glfwSetWindowContentScaleCallback_impl
+
 typedef void (*glfwPollEvents_func)();
 glfwPollEvents_func glfwPollEvents_impl;
 #define glfwPollEvents glfwPollEvents_impl