//======================================================================== // GLFW - An OpenGL library // Platform: X11/GLX // API version: 3.0 // WWW: http://www.glfw.org/ //------------------------------------------------------------------------ // Copyright (c) 2002-2006 Marcus Geelnard // Copyright (c) 2006-2010 Camilla Berglund // // 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. // //======================================================================== #include "internal.h" #include #include #include //======================================================================== // Translate an X11 key code to a GLFW key code. //======================================================================== static int keyCodeToGLFWKeyCode(int keyCode) { int keySym; // Valid key code range is [8,255], according to the XLib manual if (keyCode < 8 || keyCode > 255) return -1; // Try secondary keysym, for numeric keypad keys // Note: This way we always force "NumLock = ON", which is intentional // since the returned key code should correspond to a physical // location. keySym = XkbKeycodeToKeysym(_glfw.x11.display, keyCode, 1, 0); switch (keySym) { case XK_KP_0: return GLFW_KEY_KP_0; case XK_KP_1: return GLFW_KEY_KP_1; case XK_KP_2: return GLFW_KEY_KP_2; case XK_KP_3: return GLFW_KEY_KP_3; case XK_KP_4: return GLFW_KEY_KP_4; case XK_KP_5: return GLFW_KEY_KP_5; case XK_KP_6: return GLFW_KEY_KP_6; case XK_KP_7: return GLFW_KEY_KP_7; case XK_KP_8: return GLFW_KEY_KP_8; case XK_KP_9: return GLFW_KEY_KP_9; case XK_KP_Separator: case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL; case XK_KP_Equal: return GLFW_KEY_KP_EQUAL; case XK_KP_Enter: return GLFW_KEY_KP_ENTER; default: break; } // Now try pimary keysym for function keys (non-printable keys). These // should not be layout dependent (i.e. US layout and international // layouts should give the same result). keySym = XkbKeycodeToKeysym(_glfw.x11.display, keyCode, 0, 0); switch (keySym) { case XK_Escape: return GLFW_KEY_ESCAPE; case XK_Tab: return GLFW_KEY_TAB; case XK_Shift_L: return GLFW_KEY_LEFT_SHIFT; case XK_Shift_R: return GLFW_KEY_RIGHT_SHIFT; case XK_Control_L: return GLFW_KEY_LEFT_CONTROL; case XK_Control_R: return GLFW_KEY_RIGHT_CONTROL; case XK_Meta_L: case XK_Alt_L: return GLFW_KEY_LEFT_ALT; case XK_Mode_switch: // Mapped to Alt_R on many keyboards case XK_ISO_Level3_Shift: // AltGr on at least some machines case XK_Meta_R: case XK_Alt_R: return GLFW_KEY_RIGHT_ALT; case XK_Super_L: return GLFW_KEY_LEFT_SUPER; case XK_Super_R: return GLFW_KEY_RIGHT_SUPER; case XK_Menu: return GLFW_KEY_MENU; case XK_Num_Lock: return GLFW_KEY_NUM_LOCK; case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK; case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK; case XK_Pause: return GLFW_KEY_PAUSE; case XK_Delete: return GLFW_KEY_DELETE; case XK_BackSpace: return GLFW_KEY_BACKSPACE; case XK_Return: return GLFW_KEY_ENTER; case XK_Home: return GLFW_KEY_HOME; case XK_End: return GLFW_KEY_END; case XK_Page_Up: return GLFW_KEY_PAGE_UP; case XK_Page_Down: return GLFW_KEY_PAGE_DOWN; case XK_Insert: return GLFW_KEY_INSERT; case XK_Left: return GLFW_KEY_LEFT; case XK_Right: return GLFW_KEY_RIGHT; case XK_Down: return GLFW_KEY_DOWN; case XK_Up: return GLFW_KEY_UP; case XK_F1: return GLFW_KEY_F1; case XK_F2: return GLFW_KEY_F2; case XK_F3: return GLFW_KEY_F3; case XK_F4: return GLFW_KEY_F4; case XK_F5: return GLFW_KEY_F5; case XK_F6: return GLFW_KEY_F6; case XK_F7: return GLFW_KEY_F7; case XK_F8: return GLFW_KEY_F8; case XK_F9: return GLFW_KEY_F9; case XK_F10: return GLFW_KEY_F10; case XK_F11: return GLFW_KEY_F11; case XK_F12: return GLFW_KEY_F12; case XK_F13: return GLFW_KEY_F13; case XK_F14: return GLFW_KEY_F14; case XK_F15: return GLFW_KEY_F15; case XK_F16: return GLFW_KEY_F16; case XK_F17: return GLFW_KEY_F17; case XK_F18: return GLFW_KEY_F18; case XK_F19: return GLFW_KEY_F19; case XK_F20: return GLFW_KEY_F20; case XK_F21: return GLFW_KEY_F21; case XK_F22: return GLFW_KEY_F22; case XK_F23: return GLFW_KEY_F23; case XK_F24: return GLFW_KEY_F24; case XK_F25: return GLFW_KEY_F25; // Numeric keypad case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE; case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY; case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT; case XK_KP_Add: return GLFW_KEY_KP_ADD; // These should have been detected in secondary keysym test above! case XK_KP_Insert: return GLFW_KEY_KP_0; case XK_KP_End: return GLFW_KEY_KP_1; case XK_KP_Down: return GLFW_KEY_KP_2; case XK_KP_Page_Down: return GLFW_KEY_KP_3; case XK_KP_Left: return GLFW_KEY_KP_4; case XK_KP_Right: return GLFW_KEY_KP_6; case XK_KP_Home: return GLFW_KEY_KP_7; case XK_KP_Up: return GLFW_KEY_KP_8; case XK_KP_Page_Up: return GLFW_KEY_KP_9; case XK_KP_Delete: return GLFW_KEY_KP_DECIMAL; case XK_KP_Equal: return GLFW_KEY_KP_EQUAL; case XK_KP_Enter: return GLFW_KEY_KP_ENTER; // Last resort: Check for printable keys (should not happen if the XKB // extension is available). This will give a layout dependent mapping // (which is wrong, and we may miss some keys, especially on non-US // keyboards), but it's better than nothing... case XK_a: return GLFW_KEY_A; case XK_b: return GLFW_KEY_B; case XK_c: return GLFW_KEY_C; case XK_d: return GLFW_KEY_D; case XK_e: return GLFW_KEY_E; case XK_f: return GLFW_KEY_F; case XK_g: return GLFW_KEY_G; case XK_h: return GLFW_KEY_H; case XK_i: return GLFW_KEY_I; case XK_j: return GLFW_KEY_J; case XK_k: return GLFW_KEY_K; case XK_l: return GLFW_KEY_L; case XK_m: return GLFW_KEY_M; case XK_n: return GLFW_KEY_N; case XK_o: return GLFW_KEY_O; case XK_p: return GLFW_KEY_P; case XK_q: return GLFW_KEY_Q; case XK_r: return GLFW_KEY_R; case XK_s: return GLFW_KEY_S; case XK_t: return GLFW_KEY_T; case XK_u: return GLFW_KEY_U; case XK_v: return GLFW_KEY_V; case XK_w: return GLFW_KEY_W; case XK_x: return GLFW_KEY_X; case XK_y: return GLFW_KEY_Y; case XK_z: return GLFW_KEY_Z; case XK_1: return GLFW_KEY_1; case XK_2: return GLFW_KEY_2; case XK_3: return GLFW_KEY_3; case XK_4: return GLFW_KEY_4; case XK_5: return GLFW_KEY_5; case XK_6: return GLFW_KEY_6; case XK_7: return GLFW_KEY_7; case XK_8: return GLFW_KEY_8; case XK_9: return GLFW_KEY_9; case XK_0: return GLFW_KEY_0; case XK_space: return GLFW_KEY_SPACE; case XK_minus: return GLFW_KEY_MINUS; case XK_equal: return GLFW_KEY_EQUAL; case XK_bracketleft: return GLFW_KEY_LEFT_BRACKET; case XK_bracketright: return GLFW_KEY_RIGHT_BRACKET; case XK_backslash: return GLFW_KEY_BACKSLASH; case XK_semicolon: return GLFW_KEY_SEMICOLON; case XK_apostrophe: return GLFW_KEY_APOSTROPHE; case XK_grave: return GLFW_KEY_GRAVE_ACCENT; case XK_comma: return GLFW_KEY_COMMA; case XK_period: return GLFW_KEY_PERIOD; case XK_slash: return GLFW_KEY_SLASH; case XK_less: return GLFW_KEY_WORLD_1; // At least in some layouts... default: break; } // No matching translation was found, so return -1 return -1; } //======================================================================== // Update the key code LUT //======================================================================== static void updateKeyCodeLUT(void) { int i, keyCode, keyCodeGLFW; char name[XkbKeyNameLength + 1]; XkbDescPtr descr; // Clear the LUT for (keyCode = 0; keyCode < 256; keyCode++) _glfw.x11.keyCodeLUT[keyCode] = -1; // Use XKB to determine physical key locations independently of the current // keyboard layout // Get keyboard description descr = XkbGetKeyboard(_glfw.x11.display, XkbAllComponentsMask, XkbUseCoreKbd); // Find the X11 key code -> GLFW key code mapping for (keyCode = descr->min_key_code; keyCode <= descr->max_key_code; ++keyCode) { // Get the key name for (i = 0; i < XkbKeyNameLength; i++) name[i] = descr->names->keys[keyCode].name[i]; name[XkbKeyNameLength] = 0; // Map the key name to a GLFW key code. Note: We only map printable // keys here, and we use the US keyboard layout. The rest of the // keys (function keys) are mapped using traditional KeySym // translations. if (strcmp(name, "TLDE") == 0) keyCodeGLFW = GLFW_KEY_GRAVE_ACCENT; else if (strcmp(name, "AE01") == 0) keyCodeGLFW = GLFW_KEY_1; else if (strcmp(name, "AE02") == 0) keyCodeGLFW = GLFW_KEY_2; else if (strcmp(name, "AE03") == 0) keyCodeGLFW = GLFW_KEY_3; else if (strcmp(name, "AE04") == 0) keyCodeGLFW = GLFW_KEY_4; else if (strcmp(name, "AE05") == 0) keyCodeGLFW = GLFW_KEY_5; else if (strcmp(name, "AE06") == 0) keyCodeGLFW = GLFW_KEY_6; else if (strcmp(name, "AE07") == 0) keyCodeGLFW = GLFW_KEY_7; else if (strcmp(name, "AE08") == 0) keyCodeGLFW = GLFW_KEY_8; else if (strcmp(name, "AE09") == 0) keyCodeGLFW = GLFW_KEY_9; else if (strcmp(name, "AE10") == 0) keyCodeGLFW = GLFW_KEY_0; else if (strcmp(name, "AE11") == 0) keyCodeGLFW = GLFW_KEY_MINUS; else if (strcmp(name, "AE12") == 0) keyCodeGLFW = GLFW_KEY_EQUAL; else if (strcmp(name, "AD01") == 0) keyCodeGLFW = GLFW_KEY_Q; else if (strcmp(name, "AD02") == 0) keyCodeGLFW = GLFW_KEY_W; else if (strcmp(name, "AD03") == 0) keyCodeGLFW = GLFW_KEY_E; else if (strcmp(name, "AD04") == 0) keyCodeGLFW = GLFW_KEY_R; else if (strcmp(name, "AD05") == 0) keyCodeGLFW = GLFW_KEY_T; else if (strcmp(name, "AD06") == 0) keyCodeGLFW = GLFW_KEY_Y; else if (strcmp(name, "AD07") == 0) keyCodeGLFW = GLFW_KEY_U; else if (strcmp(name, "AD08") == 0) keyCodeGLFW = GLFW_KEY_I; else if (strcmp(name, "AD09") == 0) keyCodeGLFW = GLFW_KEY_O; else if (strcmp(name, "AD10") == 0) keyCodeGLFW = GLFW_KEY_P; else if (strcmp(name, "AD11") == 0) keyCodeGLFW = GLFW_KEY_LEFT_BRACKET; else if (strcmp(name, "AD12") == 0) keyCodeGLFW = GLFW_KEY_RIGHT_BRACKET; else if (strcmp(name, "AC01") == 0) keyCodeGLFW = GLFW_KEY_A; else if (strcmp(name, "AC02") == 0) keyCodeGLFW = GLFW_KEY_S; else if (strcmp(name, "AC03") == 0) keyCodeGLFW = GLFW_KEY_D; else if (strcmp(name, "AC04") == 0) keyCodeGLFW = GLFW_KEY_F; else if (strcmp(name, "AC05") == 0) keyCodeGLFW = GLFW_KEY_G; else if (strcmp(name, "AC06") == 0) keyCodeGLFW = GLFW_KEY_H; else if (strcmp(name, "AC07") == 0) keyCodeGLFW = GLFW_KEY_J; else if (strcmp(name, "AC08") == 0) keyCodeGLFW = GLFW_KEY_K; else if (strcmp(name, "AC09") == 0) keyCodeGLFW = GLFW_KEY_L; else if (strcmp(name, "AC10") == 0) keyCodeGLFW = GLFW_KEY_SEMICOLON; else if (strcmp(name, "AC11") == 0) keyCodeGLFW = GLFW_KEY_APOSTROPHE; else if (strcmp(name, "AB01") == 0) keyCodeGLFW = GLFW_KEY_Z; else if (strcmp(name, "AB02") == 0) keyCodeGLFW = GLFW_KEY_X; else if (strcmp(name, "AB03") == 0) keyCodeGLFW = GLFW_KEY_C; else if (strcmp(name, "AB04") == 0) keyCodeGLFW = GLFW_KEY_V; else if (strcmp(name, "AB05") == 0) keyCodeGLFW = GLFW_KEY_B; else if (strcmp(name, "AB06") == 0) keyCodeGLFW = GLFW_KEY_N; else if (strcmp(name, "AB07") == 0) keyCodeGLFW = GLFW_KEY_M; else if (strcmp(name, "AB08") == 0) keyCodeGLFW = GLFW_KEY_COMMA; else if (strcmp(name, "AB09") == 0) keyCodeGLFW = GLFW_KEY_PERIOD; else if (strcmp(name, "AB10") == 0) keyCodeGLFW = GLFW_KEY_SLASH; else if (strcmp(name, "BKSL") == 0) keyCodeGLFW = GLFW_KEY_BACKSLASH; else if (strcmp(name, "LSGT") == 0) keyCodeGLFW = GLFW_KEY_WORLD_1; else keyCodeGLFW = -1; // Update the key code LUT if ((keyCode >= 0) && (keyCode < 256)) _glfw.x11.keyCodeLUT[keyCode] = keyCodeGLFW; } // Free the keyboard description XkbFreeKeyboard(descr, 0, True); // Translate the un-translated key codes using traditional X11 KeySym // lookups for (keyCode = 0; keyCode < 256; keyCode++) { if (_glfw.x11.keyCodeLUT[keyCode] < 0) _glfw.x11.keyCodeLUT[keyCode] = keyCodeToGLFWKeyCode(keyCode); } } //======================================================================== // Retrieve a single window property of the specified type // Inspired by fghGetWindowProperty from freeglut //======================================================================== static unsigned long getWindowProperty(Window window, Atom property, Atom type, unsigned char** value) { Atom actualType; int actualFormat; unsigned long itemCount, bytesAfter; XGetWindowProperty(_glfw.x11.display, window, property, 0, LONG_MAX, False, type, &actualType, &actualFormat, &itemCount, &bytesAfter, value); if (actualType != type) return 0; return itemCount; } //======================================================================== // Check whether the specified atom is supported //======================================================================== static Atom getSupportedAtom(Atom* supportedAtoms, unsigned long atomCount, const char* atomName) { Atom atom = XInternAtom(_glfw.x11.display, atomName, True); if (atom != None) { unsigned long i; for (i = 0; i < atomCount; i++) { if (supportedAtoms[i] == atom) return atom; } } return None; } //======================================================================== // Check whether the running window manager is EWMH-compliant //======================================================================== static void detectEWMH(void) { Window* windowFromRoot = NULL; Window* windowFromChild = NULL; // First we need a couple of atoms, which should already be there Atom supportingWmCheck = XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", True); Atom wmSupported = XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", True); if (supportingWmCheck == None || wmSupported == None) return; // Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window if (getWindowProperty(_glfw.x11.root, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromRoot) != 1) { XFree(windowFromRoot); return; } // It should be the ID of a child window (of the root) // Then we look for the same property on the child window if (getWindowProperty(*windowFromRoot, supportingWmCheck, XA_WINDOW, (unsigned char**) &windowFromChild) != 1) { XFree(windowFromRoot); XFree(windowFromChild); return; } // It should be the ID of that same child window if (*windowFromRoot != *windowFromChild) { XFree(windowFromRoot); XFree(windowFromChild); return; } XFree(windowFromRoot); XFree(windowFromChild); // We are now fairly sure that an EWMH-compliant window manager is running Atom* supportedAtoms; unsigned long atomCount; // Now we need to check the _NET_SUPPORTED property of the root window // It should be a list of supported WM protocol and state atoms atomCount = getWindowProperty(_glfw.x11.root, wmSupported, XA_ATOM, (unsigned char**) &supportedAtoms); // See which of the atoms we support that are supported by the WM _glfw.x11.wmState = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE"); _glfw.x11.wmStateFullscreen = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN"); _glfw.x11.wmName = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_NAME"); _glfw.x11.wmIconName = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_ICON_NAME"); _glfw.x11.wmPing = getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_PING"); _glfw.x11.wmActiveWindow = getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW"); XFree(supportedAtoms); _glfw.x11.hasEWMH = GL_TRUE; } //======================================================================== // Initialize X11 display and look for supported X11 extensions //======================================================================== static GLboolean initDisplay(void) { _glfw.x11.display = XOpenDisplay(NULL); if (!_glfw.x11.display) { _glfwInputError(GLFW_API_UNAVAILABLE, "X11: Failed to open X display"); return GL_FALSE; } // As the API currently doesn't understand multiple display devices, we hard-code // this choice and hope for the best _glfw.x11.screen = DefaultScreen(_glfw.x11.display); _glfw.x11.root = RootWindow(_glfw.x11.display, _glfw.x11.screen); // Check for XF86VidMode extension _glfw.x11.vidmode.available = XF86VidModeQueryExtension(_glfw.x11.display, &_glfw.x11.vidmode.eventBase, &_glfw.x11.vidmode.errorBase); // Check for RandR extension _glfw.x11.randr.available = XRRQueryExtension(_glfw.x11.display, &_glfw.x11.randr.eventBase, &_glfw.x11.randr.errorBase); if (_glfw.x11.randr.available) { if (!XRRQueryVersion(_glfw.x11.display, &_glfw.x11.randr.versionMajor, &_glfw.x11.randr.versionMinor)) { _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to query RandR version"); return GL_FALSE; } // The GLFW RandR path requires at least version 1.3 if (_glfw.x11.randr.versionMajor == 1 && _glfw.x11.randr.versionMinor < 3) { _glfw.x11.randr.available = GL_FALSE; } } // Check if Xkb is supported on this display _glfw.x11.xkb.versionMajor = 1; _glfw.x11.xkb.versionMinor = 0; if (!XkbQueryExtension(_glfw.x11.display, &_glfw.x11.xkb.majorOpcode, &_glfw.x11.xkb.eventBase, &_glfw.x11.xkb.errorBase, &_glfw.x11.xkb.versionMajor, &_glfw.x11.xkb.versionMinor)) { _glfwInputError(GLFW_PLATFORM_ERROR, "X11: The keyboard extension is not available"); return GL_FALSE; } // Update the key code LUT // FIXME: We should listen to XkbMapNotify events to track changes to // the keyboard mapping. updateKeyCodeLUT(); // Detect whether an EWMH-conformant window manager is running detectEWMH(); // Find or create selection property atom _glfw.x11.selection.property = XInternAtom(_glfw.x11.display, "GLFW_SELECTION", False); // Find or create clipboard atom _glfw.x11.selection.atom = XInternAtom(_glfw.x11.display, "CLIPBOARD", False); // Find or create selection target atoms _glfw.x11.selection.formats[_GLFW_CLIPBOARD_FORMAT_UTF8] = XInternAtom(_glfw.x11.display, "UTF8_STRING", False); _glfw.x11.selection.formats[_GLFW_CLIPBOARD_FORMAT_COMPOUND] = XInternAtom(_glfw.x11.display, "COMPOUND_STRING", False); _glfw.x11.selection.formats[_GLFW_CLIPBOARD_FORMAT_STRING] = XA_STRING; _glfw.x11.selection.targets = XInternAtom(_glfw.x11.display, "TARGETS", False); return GL_TRUE; } //======================================================================== // Create a blank cursor (for locked mouse mode) //======================================================================== static Cursor createNULLCursor(void) { Pixmap cursormask; XGCValues xgc; GC gc; XColor col; Cursor cursor; // TODO: Add error checks cursormask = XCreatePixmap(_glfw.x11.display, _glfw.x11.root, 1, 1, 1); xgc.function = GXclear; gc = XCreateGC(_glfw.x11.display, cursormask, GCFunction, &xgc); XFillRectangle(_glfw.x11.display, cursormask, gc, 0, 0, 1, 1); col.pixel = 0; col.red = 0; col.flags = 4; cursor = XCreatePixmapCursor(_glfw.x11.display, cursormask, cursormask, &col, &col, 0, 0); XFreePixmap(_glfw.x11.display, cursormask); XFreeGC(_glfw.x11.display, gc); return cursor; } //======================================================================== // Terminate X11 display //======================================================================== static void terminateDisplay(void) { if (_glfw.x11.display) { XCloseDisplay(_glfw.x11.display); _glfw.x11.display = NULL; } } ////////////////////////////////////////////////////////////////////////// ////// GLFW platform API ////// ////////////////////////////////////////////////////////////////////////// //======================================================================== // Initialize various GLFW state //======================================================================== int _glfwPlatformInit(void) { XInitThreads(); if (!initDisplay()) return GL_FALSE; _glfwInitGammaRamp(); if (!_glfwInitOpenGL()) return GL_FALSE; _glfw.x11.cursor = createNULLCursor(); if (!_glfwInitJoysticks()) return GL_FALSE; _glfwInitTimer(); return GL_TRUE; } //======================================================================== // Close window and shut down library //======================================================================== void _glfwPlatformTerminate(void) { if (_glfw.x11.cursor) { XFreeCursor(_glfw.x11.display, _glfw.x11.cursor); _glfw.x11.cursor = (Cursor) 0; } _glfwTerminateGammaRamp(); _glfwTerminateJoysticks(); _glfwTerminateOpenGL(); terminateDisplay(); if (_glfw.x11.selection.string) free(_glfw.x11.selection.string); } //======================================================================== // Get the GLFW version string //======================================================================== const char* _glfwPlatformGetVersionString(void) { const char* version = _GLFW_VERSION_FULL #if defined(_GLFW_GLX) " GLX" #elif defined(_GLFW_EGL) " EGL" #endif #if defined(_GLFW_HAS_GLXGETPROCADDRESS) " glXGetProcAddress" #elif defined(_GLFW_HAS_GLXGETPROCADDRESSARB) " glXGetProcAddressARB" #elif defined(_GLFW_HAS_GLXGETPROCADDRESSEXT) " glXGetProcAddressEXT" #elif defined(_GLFW_DLOPEN_LIBGL) " dlsym(libGL)" #else " no-extension-support" #endif #if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK) " clock_gettime" #endif #if defined(__linux__) " Linux-joystick-API" #else " no-joystick-support" #endif #if defined(_GLFW_BUILD_DLL) " shared" #endif ; return version; }