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diff --git a/glfw-3.2.1/src/internal.h b/glfw-3.2.1/src/internal.h
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+//========================================================================
+// GLFW 3.2 - www.glfw.org
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#ifndef _glfw3_internal_h_
+#define _glfw3_internal_h_
+
+
+#if defined(_GLFW_USE_CONFIG_H)
+ #include "glfw_config.h"
+#endif
+
+#if defined(GLFW_INCLUDE_GLCOREARB) || \
+    defined(GLFW_INCLUDE_ES1)       || \
+    defined(GLFW_INCLUDE_ES2)       || \
+    defined(GLFW_INCLUDE_ES3)       || \
+    defined(GLFW_INCLUDE_NONE)      || \
+    defined(GLFW_INCLUDE_GLEXT)     || \
+    defined(GLFW_INCLUDE_GLU)       || \
+    defined(GLFW_INCLUDE_VULKAN)    || \
+    defined(GLFW_DLL)
+ #error "You must not define any header option macros when compiling GLFW"
+#endif
+
+#define GLFW_INCLUDE_NONE
+#include "../include/GLFW/glfw3.h"
+
+typedef int GLFWbool;
+
+typedef struct _GLFWwndconfig   _GLFWwndconfig;
+typedef struct _GLFWctxconfig   _GLFWctxconfig;
+typedef struct _GLFWfbconfig    _GLFWfbconfig;
+typedef struct _GLFWcontext     _GLFWcontext;
+typedef struct _GLFWwindow      _GLFWwindow;
+typedef struct _GLFWlibrary     _GLFWlibrary;
+typedef struct _GLFWmonitor     _GLFWmonitor;
+typedef struct _GLFWcursor      _GLFWcursor;
+
+typedef void (* _GLFWmakecontextcurrentfun)(_GLFWwindow*);
+typedef void (* _GLFWswapbuffersfun)(_GLFWwindow*);
+typedef void (* _GLFWswapintervalfun)(int);
+typedef int (* _GLFWextensionsupportedfun)(const char*);
+typedef GLFWglproc (* _GLFWgetprocaddressfun)(const char*);
+typedef void (* _GLFWdestroycontextfun)(_GLFWwindow*);
+
+#define GL_VERSION 0x1f02
+#define GL_NONE	0
+#define GL_COLOR_BUFFER_BIT	0x00004000
+#define GL_EXTENSIONS 0x1f03
+#define GL_NUM_EXTENSIONS 0x821d
+#define GL_CONTEXT_FLAGS 0x821e
+#define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT 0x00000001
+#define GL_CONTEXT_FLAG_DEBUG_BIT 0x00000002
+#define GL_CONTEXT_PROFILE_MASK 0x9126
+#define GL_CONTEXT_COMPATIBILITY_PROFILE_BIT 0x00000002
+#define GL_CONTEXT_CORE_PROFILE_BIT 0x00000001
+#define GL_RESET_NOTIFICATION_STRATEGY_ARB 0x8256
+#define GL_LOSE_CONTEXT_ON_RESET_ARB 0x8252
+#define GL_NO_RESET_NOTIFICATION_ARB 0x8261
+#define GL_CONTEXT_RELEASE_BEHAVIOR 0x82fb
+#define GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH 0x82fc
+#define GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
+
+typedef int	GLint;
+typedef unsigned int GLuint;
+typedef unsigned int GLenum;
+typedef unsigned int GLbitfield;
+typedef unsigned char GLubyte;
+
+typedef void (APIENTRY * PFNGLCLEARPROC)(GLbitfield);
+typedef const GLubyte* (APIENTRY * PFNGLGETSTRINGPROC)(GLenum);
+typedef void (APIENTRY * PFNGLGETINTEGERVPROC)(GLenum,GLint*);
+typedef const GLubyte* (APIENTRY * PFNGLGETSTRINGIPROC)(GLenum,GLuint);
+
+#define VK_NULL_HANDLE 0
+
+typedef void* VkInstance;
+typedef void* VkPhysicalDevice;
+typedef uint64_t VkSurfaceKHR;
+typedef uint32_t VkFlags;
+typedef uint32_t VkBool32;
+
+typedef enum VkStructureType
+{
+    VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR = 1000004000,
+    VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR = 1000005000,
+    VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR = 1000006000,
+    VK_STRUCTURE_TYPE_MIR_SURFACE_CREATE_INFO_KHR = 1000007000,
+    VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR = 1000009000,
+    VK_STRUCTURE_TYPE_MAX_ENUM = 0x7FFFFFFF
+} VkStructureType;
+
+typedef enum VkResult
+{
+    VK_SUCCESS = 0,
+    VK_NOT_READY = 1,
+    VK_TIMEOUT = 2,
+    VK_EVENT_SET = 3,
+    VK_EVENT_RESET = 4,
+    VK_INCOMPLETE = 5,
+    VK_ERROR_OUT_OF_HOST_MEMORY = -1,
+    VK_ERROR_OUT_OF_DEVICE_MEMORY = -2,
+    VK_ERROR_INITIALIZATION_FAILED = -3,
+    VK_ERROR_DEVICE_LOST = -4,
+    VK_ERROR_MEMORY_MAP_FAILED = -5,
+    VK_ERROR_LAYER_NOT_PRESENT = -6,
+    VK_ERROR_EXTENSION_NOT_PRESENT = -7,
+    VK_ERROR_FEATURE_NOT_PRESENT = -8,
+    VK_ERROR_INCOMPATIBLE_DRIVER = -9,
+    VK_ERROR_TOO_MANY_OBJECTS = -10,
+    VK_ERROR_FORMAT_NOT_SUPPORTED = -11,
+    VK_ERROR_SURFACE_LOST_KHR = -1000000000,
+    VK_SUBOPTIMAL_KHR = 1000001003,
+    VK_ERROR_OUT_OF_DATE_KHR = -1000001004,
+    VK_ERROR_INCOMPATIBLE_DISPLAY_KHR = -1000003001,
+    VK_ERROR_NATIVE_WINDOW_IN_USE_KHR = -1000000001,
+    VK_ERROR_VALIDATION_FAILED_EXT = -1000011001,
+    VK_RESULT_MAX_ENUM = 0x7FFFFFFF
+} VkResult;
+
+typedef struct VkAllocationCallbacks VkAllocationCallbacks;
+
+typedef struct VkExtensionProperties
+{
+    char            extensionName[256];
+    uint32_t        specVersion;
+} VkExtensionProperties;
+
+typedef void (APIENTRY * PFN_vkVoidFunction)(void);
+
+#if defined(_GLFW_VULKAN_STATIC)
+  PFN_vkVoidFunction vkGetInstanceProcAddr(VkInstance,const char*);
+  VkResult vkEnumerateInstanceExtensionProperties(const char*,uint32_t*,VkExtensionProperties*);
+#else
+  typedef PFN_vkVoidFunction (APIENTRY * PFN_vkGetInstanceProcAddr)(VkInstance,const char*);
+  typedef VkResult (APIENTRY * PFN_vkEnumerateInstanceExtensionProperties)(const char*,uint32_t*,VkExtensionProperties*);
+  #define vkEnumerateInstanceExtensionProperties _glfw.vk.EnumerateInstanceExtensionProperties
+  #define vkGetInstanceProcAddr _glfw.vk.GetInstanceProcAddr
+#endif
+
+#if defined(_GLFW_COCOA)
+ #include "cocoa_platform.h"
+#elif defined(_GLFW_WIN32)
+ #include "win32_platform.h"
+#elif defined(_GLFW_X11)
+ #include "x11_platform.h"
+#elif defined(_GLFW_WAYLAND)
+ #include "wl_platform.h"
+#elif defined(_GLFW_MIR)
+ #include "mir_platform.h"
+#else
+ #error "No supported window creation API selected"
+#endif
+
+
+//========================================================================
+// Doxygen group definitions
+//========================================================================
+
+/*! @defgroup platform Platform interface
+ *  @brief The interface implemented by the platform-specific code.
+ *
+ *  The platform API is the interface exposed by the platform-specific code for
+ *  each platform and is called by the shared code of the public API It mirrors
+ *  the public API except it uses objects instead of handles.
+ */
+/*! @defgroup event Event interface
+ *  @brief The interface used by the platform-specific code to report events.
+ *
+ *  The event API is used by the platform-specific code to notify the shared
+ *  code of events that can be translated into state changes and/or callback
+ *  calls.
+ */
+/*! @defgroup utility Utility functions
+ *  @brief Various utility functions for internal use.
+ *
+ *  These functions are shared code and may be used by any part of GLFW
+ *  Each platform may add its own utility functions, but those must only be
+ *  called by the platform-specific code
+ */
+
+
+//========================================================================
+// Helper macros
+//========================================================================
+
+// Constructs a version number string from the public header macros
+#define _GLFW_CONCAT_VERSION(m, n, r) #m "." #n "." #r
+#define _GLFW_MAKE_VERSION(m, n, r) _GLFW_CONCAT_VERSION(m, n, r)
+#define _GLFW_VERSION_NUMBER _GLFW_MAKE_VERSION(GLFW_VERSION_MAJOR, \
+                                                GLFW_VERSION_MINOR, \
+                                                GLFW_VERSION_REVISION)
+
+// Checks for whether the library has been initialized
+#define _GLFW_REQUIRE_INIT()                         \
+    if (!_glfwInitialized)                           \
+    {                                                \
+        _glfwInputError(GLFW_NOT_INITIALIZED, NULL); \
+        return;                                      \
+    }
+#define _GLFW_REQUIRE_INIT_OR_RETURN(x)              \
+    if (!_glfwInitialized)                           \
+    {                                                \
+        _glfwInputError(GLFW_NOT_INITIALIZED, NULL); \
+        return x;                                    \
+    }
+
+// Swaps the provided pointers
+#define _GLFW_SWAP_POINTERS(x, y) \
+    {                             \
+        void* t;                  \
+        t = x;                    \
+        x = y;                    \
+        y = t;                    \
+    }
+
+
+//========================================================================
+// Platform-independent structures
+//========================================================================
+
+/*! @brief Window configuration.
+ *
+ *  Parameters relating to the creation of the window but not directly related
+ *  to the framebuffer.  This is used to pass window creation parameters from
+ *  shared code to the platform API.
+ */
+struct _GLFWwndconfig
+{
+    int           width;
+    int           height;
+    const char*   title;
+    GLFWbool      resizable;
+    GLFWbool      visible;
+    GLFWbool      decorated;
+    GLFWbool      focused;
+    GLFWbool      autoIconify;
+    GLFWbool      floating;
+    GLFWbool      maximized;
+};
+
+/*! @brief Context configuration.
+ *
+ *  Parameters relating to the creation of the context but not directly related
+ *  to the framebuffer.  This is used to pass context creation parameters from
+ *  shared code to the platform API.
+ */
+struct _GLFWctxconfig
+{
+    int           client;
+    int           source;
+    int           major;
+    int           minor;
+    GLFWbool      forward;
+    GLFWbool      debug;
+    GLFWbool      noerror;
+    int           profile;
+    int           robustness;
+    int           release;
+    _GLFWwindow*  share;
+};
+
+/*! @brief Framebuffer configuration.
+ *
+ *  This describes buffers and their sizes.  It also contains
+ *  a platform-specific ID used to map back to the backend API object.
+ *
+ *  It is used to pass framebuffer parameters from shared code to the platform
+ *  API and also to enumerate and select available framebuffer configs.
+ */
+struct _GLFWfbconfig
+{
+    int         redBits;
+    int         greenBits;
+    int         blueBits;
+    int         alphaBits;
+    int         depthBits;
+    int         stencilBits;
+    int         accumRedBits;
+    int         accumGreenBits;
+    int         accumBlueBits;
+    int         accumAlphaBits;
+    int         auxBuffers;
+    GLFWbool    stereo;
+    int         samples;
+    GLFWbool    sRGB;
+    GLFWbool    doublebuffer;
+    uintptr_t   handle;
+};
+
+/*! @brief Context structure.
+ */
+struct _GLFWcontext
+{
+    int                 client;
+    int                 source;
+    int                 major, minor, revision;
+    GLFWbool            forward, debug, noerror;
+    int                 profile;
+    int                 robustness;
+    int                 release;
+
+    PFNGLGETSTRINGIPROC GetStringi;
+    PFNGLGETINTEGERVPROC GetIntegerv;
+    PFNGLGETSTRINGPROC  GetString;
+
+    _GLFWmakecontextcurrentfun  makeCurrent;
+    _GLFWswapbuffersfun         swapBuffers;
+    _GLFWswapintervalfun        swapInterval;
+    _GLFWextensionsupportedfun  extensionSupported;
+    _GLFWgetprocaddressfun      getProcAddress;
+    _GLFWdestroycontextfun      destroy;
+
+    // This is defined in the context API's context.h
+    _GLFW_PLATFORM_CONTEXT_STATE;
+    // This is defined in egl_context.h
+    _GLFW_EGL_CONTEXT_STATE;
+};
+
+/*! @brief Window and context structure.
+ */
+struct _GLFWwindow
+{
+    struct _GLFWwindow* next;
+
+    // Window settings and state
+    GLFWbool            resizable;
+    GLFWbool            decorated;
+    GLFWbool            autoIconify;
+    GLFWbool            floating;
+    GLFWbool            closed;
+    void*               userPointer;
+    GLFWvidmode         videoMode;
+    _GLFWmonitor*       monitor;
+    _GLFWcursor*        cursor;
+
+    int                 minwidth, minheight;
+    int                 maxwidth, maxheight;
+    int                 numer, denom;
+
+    GLFWbool            stickyKeys;
+    GLFWbool            stickyMouseButtons;
+    int                 cursorMode;
+    char                mouseButtons[GLFW_MOUSE_BUTTON_LAST + 1];
+    char                keys[GLFW_KEY_LAST + 1];
+    // Virtual cursor position when cursor is disabled
+    double              virtualCursorPosX, virtualCursorPosY;
+
+    _GLFWcontext        context;
+
+    struct {
+        GLFWwindowposfun        pos;
+        GLFWwindowsizefun       size;
+        GLFWwindowclosefun      close;
+        GLFWwindowrefreshfun    refresh;
+        GLFWwindowfocusfun      focus;
+        GLFWwindowiconifyfun    iconify;
+        GLFWframebuffersizefun  fbsize;
+        GLFWmousebuttonfun      mouseButton;
+        GLFWcursorposfun        cursorPos;
+        GLFWcursorenterfun      cursorEnter;
+        GLFWscrollfun           scroll;
+        GLFWkeyfun              key;
+        GLFWcharfun             character;
+        GLFWcharmodsfun         charmods;
+        GLFWdropfun             drop;
+    } callbacks;
+
+    // This is defined in the window API's platform.h
+    _GLFW_PLATFORM_WINDOW_STATE;
+};
+
+/*! @brief Monitor structure.
+ */
+struct _GLFWmonitor
+{
+    char*           name;
+
+    // Physical dimensions in millimeters.
+    int             widthMM, heightMM;
+
+    // The window whose video mode is current on this monitor
+    _GLFWwindow*    window;
+
+    GLFWvidmode*    modes;
+    int             modeCount;
+    GLFWvidmode     currentMode;
+
+    GLFWgammaramp   originalRamp;
+    GLFWgammaramp   currentRamp;
+
+    // This is defined in the window API's platform.h
+    _GLFW_PLATFORM_MONITOR_STATE;
+};
+
+/*! @brief Cursor structure
+ */
+struct _GLFWcursor
+{
+    _GLFWcursor*    next;
+
+    // This is defined in the window API's platform.h
+    _GLFW_PLATFORM_CURSOR_STATE;
+};
+
+/*! @brief Library global data.
+ */
+struct _GLFWlibrary
+{
+    struct {
+        _GLFWfbconfig   framebuffer;
+        _GLFWwndconfig  window;
+        _GLFWctxconfig  context;
+        int             refreshRate;
+    } hints;
+
+    _GLFWcursor*        cursorListHead;
+
+    _GLFWwindow*        windowListHead;
+
+    _GLFWmonitor**      monitors;
+    int                 monitorCount;
+
+    uint64_t            timerOffset;
+
+    struct {
+        GLFWbool        available;
+        void*           handle;
+        char**          extensions;
+        uint32_t        extensionCount;
+#if !defined(_GLFW_VULKAN_STATIC)
+        PFN_vkEnumerateInstanceExtensionProperties EnumerateInstanceExtensionProperties;
+        PFN_vkGetInstanceProcAddr GetInstanceProcAddr;
+#endif
+        GLFWbool        KHR_surface;
+        GLFWbool        KHR_win32_surface;
+        GLFWbool        KHR_xlib_surface;
+        GLFWbool        KHR_xcb_surface;
+        GLFWbool        KHR_wayland_surface;
+        GLFWbool        KHR_mir_surface;
+    } vk;
+
+    struct {
+        GLFWmonitorfun  monitor;
+        GLFWjoystickfun joystick;
+    } callbacks;
+
+    // This is defined in the window API's platform.h
+    _GLFW_PLATFORM_LIBRARY_WINDOW_STATE;
+    // This is defined in the context API's context.h
+    _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE;
+    // This is defined in the platform's time.h
+    _GLFW_PLATFORM_LIBRARY_TIME_STATE;
+    // This is defined in the platform's joystick.h
+    _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE;
+    // This is defined in the platform's tls.h
+    _GLFW_PLATFORM_LIBRARY_TLS_STATE;
+    // This is defined in egl_context.h
+    _GLFW_EGL_LIBRARY_CONTEXT_STATE;
+};
+
+
+//========================================================================
+// Global state shared between compilation units of GLFW
+//========================================================================
+
+/*! @brief Flag indicating whether GLFW has been successfully initialized.
+ */
+extern GLFWbool _glfwInitialized;
+
+/*! @brief All global data protected by @ref _glfwInitialized.
+ *  This should only be touched after a call to @ref glfwInit that has not been
+ *  followed by a call to @ref glfwTerminate.
+ */
+extern _GLFWlibrary _glfw;
+
+
+//========================================================================
+// Platform API functions
+//========================================================================
+
+/*! @brief Initializes the platform-specific part of the library.
+ *  @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an error occurred.
+ *  @ingroup platform
+ */
+int _glfwPlatformInit(void);
+
+/*! @brief Terminates the platform-specific part of the library.
+ *  @ingroup platform
+ */
+void _glfwPlatformTerminate(void);
+
+/*! @copydoc glfwGetVersionString
+ *  @ingroup platform
+ *
+ *  @note The returned string must be available for the duration of the program.
+ *
+ *  @note The returned string must not change for the duration of the program.
+ */
+const char* _glfwPlatformGetVersionString(void);
+
+/*! @copydoc glfwGetCursorPos
+ *  @ingroup platform
+ */
+void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos);
+
+/*! @copydoc glfwSetCursorPos
+ *  @ingroup platform
+ */
+void _glfwPlatformSetCursorPos(_GLFWwindow* window, double xpos, double ypos);
+
+/*! @brief Sets the specified cursor mode of the specified window.
+ *  @param[in] window The window whose cursor mode to set.
+ *  @ingroup platform
+ */
+void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode);
+
+/*! @copydoc glfwGetKeyName
+ *  @ingroup platform
+ */
+const char* _glfwPlatformGetKeyName(int key, int scancode);
+
+/*! @copydoc glfwGetMonitors
+ *  @ingroup platform
+ */
+_GLFWmonitor** _glfwPlatformGetMonitors(int* count);
+
+/*! @brief Checks whether two monitor objects represent the same monitor.
+ *
+ *  @param[in] first The first monitor.
+ *  @param[in] second The second monitor.
+ *  @return @c GLFW_TRUE if the monitor objects represent the same monitor, or
+ *  @c GLFW_FALSE otherwise.
+ *  @ingroup platform
+ */
+GLFWbool _glfwPlatformIsSameMonitor(_GLFWmonitor* first, _GLFWmonitor* second);
+
+/*! @copydoc glfwGetMonitorPos
+ *  @ingroup platform
+ */
+void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos);
+
+/*! @copydoc glfwGetVideoModes
+ *  @ingroup platform
+ */
+GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count);
+
+/*! @ingroup platform
+ */
+void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode);
+
+/*! @copydoc glfwGetGammaRamp
+ *  @ingroup platform
+ */
+void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp);
+
+/*! @copydoc glfwSetGammaRamp
+ *  @ingroup platform
+ */
+void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp);
+
+/*! @copydoc glfwSetClipboardString
+ *  @ingroup platform
+ */
+void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string);
+
+/*! @copydoc glfwGetClipboardString
+ *  @ingroup platform
+ *
+ *  @note The returned string must be valid until the next call to @ref
+ *  _glfwPlatformGetClipboardString or @ref _glfwPlatformSetClipboardString.
+ */
+const char* _glfwPlatformGetClipboardString(_GLFWwindow* window);
+
+/*! @copydoc glfwJoystickPresent
+ *  @ingroup platform
+ */
+int _glfwPlatformJoystickPresent(int joy);
+
+/*! @copydoc glfwGetJoystickAxes
+ *  @ingroup platform
+ */
+const float* _glfwPlatformGetJoystickAxes(int joy, int* count);
+
+/*! @copydoc glfwGetJoystickButtons
+ *  @ingroup platform
+ */
+const unsigned char* _glfwPlatformGetJoystickButtons(int joy, int* count);
+
+/*! @copydoc glfwGetJoystickName
+ *  @ingroup platform
+ */
+const char* _glfwPlatformGetJoystickName(int joy);
+
+/*! @copydoc glfwGetTimerValue
+ *  @ingroup platform
+ */
+uint64_t _glfwPlatformGetTimerValue(void);
+
+/*! @copydoc glfwGetTimerFrequency
+ *  @ingroup platform
+ */
+uint64_t _glfwPlatformGetTimerFrequency(void);
+
+/*! @ingroup platform
+ */
+int _glfwPlatformCreateWindow(_GLFWwindow* window,
+                              const _GLFWwndconfig* wndconfig,
+                              const _GLFWctxconfig* ctxconfig,
+                              const _GLFWfbconfig* fbconfig);
+
+/*! @ingroup platform
+ */
+void _glfwPlatformDestroyWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwSetWindowTitle
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title);
+
+/*! @copydoc glfwSetWindowIcon
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowIcon(_GLFWwindow* window, int count, const GLFWimage* images);
+
+/*! @copydoc glfwGetWindowPos
+ *  @ingroup platform
+ */
+void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos);
+
+/*! @copydoc glfwSetWindowPos
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos);
+
+/*! @copydoc glfwGetWindowSize
+ *  @ingroup platform
+ */
+void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height);
+
+/*! @copydoc glfwSetWindowSize
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height);
+
+/*! @copydoc glfwSetWindowSizeLimits
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window, int minwidth, int minheight, int maxwidth, int maxheight);
+
+/*! @copydoc glfwSetWindowAspectRatio
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom);
+
+/*! @copydoc glfwGetFramebufferSize
+ *  @ingroup platform
+ */
+void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height);
+
+/*! @copydoc glfwGetWindowFrameSize
+ *  @ingroup platform
+ */
+void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window, int* left, int* top, int* right, int* bottom);
+
+/*! @copydoc glfwIconifyWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformIconifyWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwRestoreWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformRestoreWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwMaximizeWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformMaximizeWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwShowWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformShowWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwHideWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformHideWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwFocusWindow
+ *  @ingroup platform
+ */
+void _glfwPlatformFocusWindow(_GLFWwindow* window);
+
+/*! @copydoc glfwSetWindowMonitor
+ *  @ingroup platform
+ */
+void _glfwPlatformSetWindowMonitor(_GLFWwindow* window, _GLFWmonitor* monitor, int xpos, int ypos, int width, int height, int refreshRate);
+
+/*! @brief Returns whether the window is focused.
+ *  @ingroup platform
+ */
+int _glfwPlatformWindowFocused(_GLFWwindow* window);
+
+/*! @brief Returns whether the window is iconified.
+ *  @ingroup platform
+ */
+int _glfwPlatformWindowIconified(_GLFWwindow* window);
+
+/*! @brief Returns whether the window is visible.
+ *  @ingroup platform
+ */
+int _glfwPlatformWindowVisible(_GLFWwindow* window);
+
+/*! @brief Returns whether the window is maximized.
+ *  @ingroup platform
+ */
+int _glfwPlatformWindowMaximized(_GLFWwindow* window);
+
+/*! @copydoc glfwPollEvents
+ *  @ingroup platform
+ */
+void _glfwPlatformPollEvents(void);
+
+/*! @copydoc glfwWaitEvents
+ *  @ingroup platform
+ */
+void _glfwPlatformWaitEvents(void);
+
+/*! @copydoc glfwWaitEventsTimeout
+ *  @ingroup platform
+ */
+void _glfwPlatformWaitEventsTimeout(double timeout);
+
+/*! @copydoc glfwPostEmptyEvent
+ *  @ingroup platform
+ */
+void _glfwPlatformPostEmptyEvent(void);
+
+/*! @ingroup platform
+ */
+void _glfwPlatformSetCurrentContext(_GLFWwindow* context);
+
+/*! @copydoc glfwGetCurrentContext
+ *  @ingroup platform
+ */
+_GLFWwindow* _glfwPlatformGetCurrentContext(void);
+
+/*! @copydoc glfwCreateCursor
+ *  @ingroup platform
+ */
+int _glfwPlatformCreateCursor(_GLFWcursor* cursor, const GLFWimage* image, int xhot, int yhot);
+
+/*! @copydoc glfwCreateStandardCursor
+ *  @ingroup platform
+ */
+int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape);
+
+/*! @copydoc glfwDestroyCursor
+ *  @ingroup platform
+ */
+void _glfwPlatformDestroyCursor(_GLFWcursor* cursor);
+
+/*! @copydoc glfwSetCursor
+ *  @ingroup platform
+ */
+void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor);
+
+/*! @ingroup platform
+ */
+char** _glfwPlatformGetRequiredInstanceExtensions(uint32_t* count);
+
+/*! @ingroup platform
+ */
+int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance, VkPhysicalDevice device, uint32_t queuefamily);
+
+/*! @ingroup platform
+ */
+VkResult _glfwPlatformCreateWindowSurface(VkInstance instance, _GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface);
+
+
+//========================================================================
+// Event API functions
+//========================================================================
+
+/*! @brief Notifies shared code of a window focus event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] focused `GLFW_TRUE` if the window received focus, or `GLFW_FALSE`
+ *  if it lost focus.
+ *  @ingroup event
+ */
+void _glfwInputWindowFocus(_GLFWwindow* window, GLFWbool focused);
+
+/*! @brief Notifies shared code of a window movement event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] xpos The new x-coordinate of the client area of the window.
+ *  @param[in] ypos The new y-coordinate of the client area of the window.
+ *  @ingroup event
+ */
+void _glfwInputWindowPos(_GLFWwindow* window, int xpos, int ypos);
+
+/*! @brief Notifies shared code of a window resize event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] width The new width of the client area of the window.
+ *  @param[in] height The new height of the client area of the window.
+ *  @ingroup event
+ */
+void _glfwInputWindowSize(_GLFWwindow* window, int width, int height);
+
+/*! @brief Notifies shared code of a framebuffer resize event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] width The new width, in pixels, of the framebuffer.
+ *  @param[in] height The new height, in pixels, of the framebuffer.
+ *  @ingroup event
+ */
+void _glfwInputFramebufferSize(_GLFWwindow* window, int width, int height);
+
+/*! @brief Notifies shared code of a window iconification event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] iconified `GLFW_TRUE` if the window was iconified, or
+ *  `GLFW_FALSE` if it was restored.
+ *  @ingroup event
+ */
+void _glfwInputWindowIconify(_GLFWwindow* window, GLFWbool iconified);
+
+/*! @brief Notifies shared code of a window damage event.
+ *  @param[in] window The window that received the event.
+ */
+void _glfwInputWindowDamage(_GLFWwindow* window);
+
+/*! @brief Notifies shared code of a window close request event
+ *  @param[in] window The window that received the event.
+ *  @ingroup event
+ */
+void _glfwInputWindowCloseRequest(_GLFWwindow* window);
+
+void _glfwInputWindowMonitorChange(_GLFWwindow* window, _GLFWmonitor* monitor);
+
+/*! @brief Notifies shared code of a physical key event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] key The key that was pressed or released.
+ *  @param[in] scancode The system-specific scan code of the key.
+ *  @param[in] action @ref GLFW_PRESS or @ref GLFW_RELEASE.
+ *  @param[in] mods The modifiers pressed when the event was generated.
+ *  @ingroup event
+ */
+void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int mods);
+
+/*! @brief Notifies shared code of a Unicode character input event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] codepoint The Unicode code point of the input character.
+ *  @param[in] mods Bit field describing which modifier keys were held down.
+ *  @param[in] plain `GLFW_TRUE` if the character is regular text input, or
+ *  `GLFW_FALSE` otherwise.
+ *  @ingroup event
+ */
+void _glfwInputChar(_GLFWwindow* window, unsigned int codepoint, int mods, GLFWbool plain);
+
+/*! @brief Notifies shared code of a scroll event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] xoffset The scroll offset along the x-axis.
+ *  @param[in] yoffset The scroll offset along the y-axis.
+ *  @ingroup event
+ */
+void _glfwInputScroll(_GLFWwindow* window, double xoffset, double yoffset);
+
+/*! @brief Notifies shared code of a mouse button click event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] button The button that was pressed or released.
+ *  @param[in] action @ref GLFW_PRESS or @ref GLFW_RELEASE.
+ *  @ingroup event
+ */
+void _glfwInputMouseClick(_GLFWwindow* window, int button, int action, int mods);
+
+/*! @brief Notifies shared code of a cursor motion event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] xpos The new x-coordinate of the cursor, relative to the left
+ *  edge of the client area of the window.
+ *  @param[in] ypos The new y-coordinate of the cursor, relative to the top edge
+ *  of the client area of the window.
+ *  @ingroup event
+ */
+void _glfwInputCursorPos(_GLFWwindow* window, double xpos, double ypos);
+
+/*! @brief Notifies shared code of a cursor enter/leave event.
+ *  @param[in] window The window that received the event.
+ *  @param[in] entered `GLFW_TRUE` if the cursor entered the client area of the
+ *  window, or `GLFW_FALSE` if it left it.
+ *  @ingroup event
+ */
+void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered);
+
+/*! @ingroup event
+ */
+void _glfwInputMonitorChange(void);
+
+/*! @ingroup event
+ */
+void _glfwInputMonitorWindowChange(_GLFWmonitor* monitor, _GLFWwindow* window);
+
+/*! @brief Notifies shared code of an error.
+ *  @param[in] error The error code most suitable for the error.
+ *  @param[in] format The `printf` style format string of the error
+ *  description.
+ *  @ingroup event
+ */
+#if defined(__GNUC__)
+void _glfwInputError(int error, const char* format, ...) __attribute__((format(printf, 2, 3)));
+#else
+void _glfwInputError(int error, const char* format, ...);
+#endif
+
+/*! @brief Notifies dropped object over window.
+ *  @param[in] window The window that received the event.
+ *  @param[in] count The number of dropped objects.
+ *  @param[in] names The names of the dropped objects.
+ *  @ingroup event
+ */
+void _glfwInputDrop(_GLFWwindow* window, int count, const char** names);
+
+/*! @brief Notifies shared code of a joystick connection/disconnection event.
+ *  @param[in] joy The joystick that was connected or disconnected.
+ *  @param[in] event One of `GLFW_CONNECTED` or `GLFW_DISCONNECTED`.
+ *  @ingroup event
+ */
+void _glfwInputJoystickChange(int joy, int event);
+
+
+//========================================================================
+// Utility functions
+//========================================================================
+
+/*! @ingroup utility
+ */
+const GLFWvidmode* _glfwChooseVideoMode(_GLFWmonitor* monitor,
+                                        const GLFWvidmode* desired);
+
+/*! @brief Performs lexical comparison between two @ref GLFWvidmode structures.
+ *  @ingroup utility
+ */
+int _glfwCompareVideoModes(const GLFWvidmode* first, const GLFWvidmode* second);
+
+/*! @brief Splits a color depth into red, green and blue bit depths.
+ *  @ingroup utility
+ */
+void _glfwSplitBPP(int bpp, int* red, int* green, int* blue);
+
+/*! @brief Searches an extension string for the specified extension.
+ *  @param[in] string The extension string to search.
+ *  @param[in] extensions The extension to search for.
+ *  @return `GLFW_TRUE` if the extension was found, or `GLFW_FALSE` otherwise.
+ *  @ingroup utility
+ */
+GLFWbool _glfwStringInExtensionString(const char* string, const char* extensions);
+
+/*! @brief Chooses the framebuffer config that best matches the desired one.
+ *  @param[in] desired The desired framebuffer config.
+ *  @param[in] alternatives The framebuffer configs supported by the system.
+ *  @param[in] count The number of entries in the alternatives array.
+ *  @return The framebuffer config most closely matching the desired one, or @c
+ *  NULL if none fulfilled the hard constraints of the desired values.
+ *  @ingroup utility
+ */
+const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired,
+                                         const _GLFWfbconfig* alternatives,
+                                         unsigned int count);
+
+/*! @brief Retrieves the attributes of the current context.
+ *  @param[in] ctxconfig The desired context attributes.
+ *  @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if the context is
+ *  unusable.
+ *  @ingroup utility
+ */
+GLFWbool _glfwRefreshContextAttribs(const _GLFWctxconfig* ctxconfig);
+
+/*! @brief Checks whether the desired context attributes are valid.
+ *  @param[in] ctxconfig The context attributes to check.
+ *  @return `GLFW_TRUE` if the context attributes are valid, or `GLFW_FALSE`
+ *  otherwise.
+ *  @ingroup utility
+ *
+ *  This function checks things like whether the specified client API version
+ *  exists and whether all relevant options have supported and non-conflicting
+ *  values.
+ */
+GLFWbool _glfwIsValidContextConfig(const _GLFWctxconfig* ctxconfig);
+
+/*! @ingroup utility
+ */
+void _glfwAllocGammaArrays(GLFWgammaramp* ramp, unsigned int size);
+
+/*! @ingroup utility
+ */
+void _glfwFreeGammaArrays(GLFWgammaramp* ramp);
+
+/*! @brief Allocates and returns a monitor object with the specified name
+ *  and dimensions.
+ *  @param[in] name The name of the monitor.
+ *  @param[in] widthMM The width, in mm, of the monitor's display area.
+ *  @param[in] heightMM The height, in mm, of the monitor's display area.
+ *  @return The newly created object.
+ *  @ingroup utility
+ */
+_GLFWmonitor* _glfwAllocMonitor(const char* name, int widthMM, int heightMM);
+
+/*! @brief Frees a monitor object and any data associated with it.
+ *  @ingroup utility
+  */
+void _glfwFreeMonitor(_GLFWmonitor* monitor);
+
+/*! @ingroup utility
+  */
+void _glfwFreeMonitors(_GLFWmonitor** monitors, int count);
+
+/*! @ingroup utility
+ */
+GLFWbool _glfwIsPrintable(int key);
+
+/*! @ingroup utility
+ */
+GLFWbool _glfwInitVulkan(void);
+
+/*! @ingroup utility
+ */
+void _glfwTerminateVulkan(void);
+
+/*! @ingroup utility
+ */
+const char* _glfwGetVulkanResultString(VkResult result);
+
+#endif // _glfw3_internal_h_