//======================================================================== // 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 //======================================================================== // Dynamically load libraries //======================================================================== static void initLibraries(void) { #ifdef _GLFW_DLOPEN_LIBGL int i; char* libGL_names[ ] = { "libGL.so", "libGL.so.1", "/usr/lib/libGL.so", "/usr/lib/libGL.so.1", NULL }; _glfwLibrary.X11.libGL = NULL; for (i = 0; libGL_names[i] != NULL; i++) { _glfwLibrary.X11.libGL = dlopen(libGL_names[i], RTLD_LAZY | RTLD_GLOBAL); if (_glfwLibrary.X11.libGL) break; } #endif } //======================================================================== // 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. #if defined(_GLFW_HAS_XKB) keySym = XkbKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 1, 0); #else keySym = XKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 1); #endif 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). #if defined(_GLFW_HAS_XKB) keySym = XkbKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 0, 0); #else keySym = XKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 0); #endif 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 keyCode; // Clear the LUT for (keyCode = 0; keyCode < 256; ++keyCode) { _glfwLibrary.X11.keyCodeLUT[keyCode] = -1; } #if defined(_GLFW_HAS_XKB) // If the Xkb extension is available, use it to determine physical key // locations independently of the current keyboard layout if (_glfwLibrary.X11.Xkb.available) { int i, keyCodeGLFW; char name[XkbKeyNameLength+1]; XkbDescPtr descr; // Get keyboard description descr = XkbGetKeyboard(_glfwLibrary.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)) { _glfwLibrary.X11.keyCodeLUT[keyCode] = keyCodeGLFW; } } // Free the keyboard description XkbFreeKeyboard(descr, 0, True); } #endif /* _GLFW_HAS_XKB */ // Translate the un-translated key codes using traditional X11 KeySym // lookups for (keyCode = 0; keyCode < 256; ++keyCode) { if (_glfwLibrary.X11.keyCodeLUT[keyCode] < 0) { _glfwLibrary.X11.keyCodeLUT[keyCode] = keyCodeToGLFWKeyCode(keyCode); } } } //======================================================================== // Initialize X11 display and look for supported X11 extensions //======================================================================== static GLboolean initDisplay(void) { _glfwLibrary.X11.display = XOpenDisplay(NULL); if (!_glfwLibrary.X11.display) { _glfwSetError(GLFW_OPENGL_UNAVAILABLE, "X11/GLX: 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 _glfwLibrary.X11.screen = DefaultScreen(_glfwLibrary.X11.display); _glfwLibrary.X11.root = RootWindow(_glfwLibrary.X11.display, _glfwLibrary.X11.screen); // Check for XF86VidMode extension #ifdef _GLFW_HAS_XF86VIDMODE _glfwLibrary.X11.VidMode.available = XF86VidModeQueryExtension(_glfwLibrary.X11.display, &_glfwLibrary.X11.VidMode.eventBase, &_glfwLibrary.X11.VidMode.errorBase); #else _glfwLibrary.X11.VidMode.available = GL_FALSE; #endif /*_GLFW_HAS_XF86VIDMODE*/ // Check for XRandR extension #ifdef _GLFW_HAS_XRANDR _glfwLibrary.X11.RandR.available = XRRQueryExtension(_glfwLibrary.X11.display, &_glfwLibrary.X11.RandR.eventBase, &_glfwLibrary.X11.RandR.errorBase); if (_glfwLibrary.X11.RandR.available) { if (!XRRQueryVersion(_glfwLibrary.X11.display, &_glfwLibrary.X11.RandR.majorVersion, &_glfwLibrary.X11.RandR.minorVersion)) { _glfwSetError(GLFW_PLATFORM_ERROR, "X11/GLX: Failed to query RandR version"); return GL_FALSE; } } #else _glfwLibrary.X11.RandR.available = GL_FALSE; #endif /*_GLFW_HAS_XRANDR*/ // Check if GLX is supported on this display if (!glXQueryExtension(_glfwLibrary.X11.display, NULL, NULL)) { _glfwSetError(GLFW_OPENGL_UNAVAILABLE, "X11/GLX: GLX supported not found"); return GL_FALSE; } if (!glXQueryVersion(_glfwLibrary.X11.display, &_glfwLibrary.X11.glxMajor, &_glfwLibrary.X11.glxMinor)) { _glfwSetError(GLFW_OPENGL_UNAVAILABLE, "X11/GLX: Failed to query GLX version"); return GL_FALSE; } // Check if Xkb is supported on this display #if defined(_GLFW_HAS_XKB) _glfwLibrary.X11.Xkb.majorVersion = 1; _glfwLibrary.X11.Xkb.minorVersion = 0; _glfwLibrary.X11.Xkb.available = XkbQueryExtension(_glfwLibrary.X11.display, &_glfwLibrary.X11.Xkb.majorOpcode, &_glfwLibrary.X11.Xkb.eventBase, &_glfwLibrary.X11.Xkb.errorBase, &_glfwLibrary.X11.Xkb.majorVersion, &_glfwLibrary.X11.Xkb.minorVersion); #else _glfwLibrary.X11.Xkb.available = GL_FALSE; #endif /* _GLFW_HAS_XKB */ // Update the key code LUT // FIXME: We should listen to XkbMapNotify events to track changes to // the keyboard mapping. updateKeyCodeLUT(); return GL_TRUE; } //======================================================================== // Detect gamma ramp support and save original gamma ramp, if available //======================================================================== static void initGammaRamp(void) { #ifdef _GLFW_HAS_XRANDR // RandR gamma support is only available with version 1.2 and above if (_glfwLibrary.X11.RandR.available && (_glfwLibrary.X11.RandR.majorVersion > 1 || (_glfwLibrary.X11.RandR.majorVersion == 1 && _glfwLibrary.X11.RandR.minorVersion >= 2))) { // FIXME: Assumes that all monitors have the same size gamma tables // This is reasonable as I suspect the that if they did differ, it // would imply that setting the gamma size to an arbitary size is // possible as well. XRRScreenResources* rr = XRRGetScreenResources(_glfwLibrary.X11.display, _glfwLibrary.X11.root); _glfwLibrary.originalRampSize = XRRGetCrtcGammaSize(_glfwLibrary.X11.display, rr->crtcs[0]); if (!_glfwLibrary.originalRampSize) { // This is probably Nvidia RandR with broken gamma support // Flag it as useless and try Xf86VidMode below, if available _glfwLibrary.X11.RandR.gammaBroken = GL_TRUE; fprintf(stderr, "Ignoring broken nVidia implementation of RandR 1.2+ gamma\n"); } XRRFreeScreenResources(rr); } #endif /*_GLFW_HAS_XRANDR*/ #if defined(_GLFW_HAS_XF86VIDMODE) if (_glfwLibrary.X11.VidMode.available && !_glfwLibrary.originalRampSize) { // Get the gamma size using XF86VidMode XF86VidModeGetGammaRampSize(_glfwLibrary.X11.display, _glfwLibrary.X11.screen, &_glfwLibrary.originalRampSize); } #endif /*_GLFW_HAS_XF86VIDMODE*/ if (!_glfwLibrary.originalRampSize) fprintf(stderr, "No supported gamma ramp API found\n"); // Save the original gamma ramp _glfwPlatformGetGammaRamp(&_glfwLibrary.originalRamp); _glfwLibrary.currentRamp = _glfwLibrary.originalRamp; } //======================================================================== // 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(_glfwLibrary.X11.display, _glfwLibrary.X11.root, 1, 1, 1); xgc.function = GXclear; gc = XCreateGC(_glfwLibrary.X11.display, cursormask, GCFunction, &xgc); XFillRectangle(_glfwLibrary.X11.display, cursormask, gc, 0, 0, 1, 1); col.pixel = 0; col.red = 0; col.flags = 4; cursor = XCreatePixmapCursor(_glfwLibrary.X11.display, cursormask, cursormask, &col, &col, 0, 0); XFreePixmap(_glfwLibrary.X11.display, cursormask); XFreeGC(_glfwLibrary.X11.display, gc); return cursor; } //======================================================================== // Terminate X11 display //======================================================================== static void terminateDisplay(void) { if (_glfwLibrary.originalRampSize) _glfwPlatformSetGammaRamp(&_glfwLibrary.originalRamp); if (_glfwLibrary.X11.display) { XCloseDisplay(_glfwLibrary.X11.display); _glfwLibrary.X11.display = NULL; } } ////////////////////////////////////////////////////////////////////////// ////// GLFW platform API ////// ////////////////////////////////////////////////////////////////////////// //======================================================================== // Initialize various GLFW state //======================================================================== int _glfwPlatformInit(void) { if (!initDisplay()) return GL_FALSE; initGammaRamp(); _glfwLibrary.X11.cursor = createNULLCursor(); // Try to load libGL.so if necessary initLibraries(); _glfwInitJoysticks(); // Start the timer _glfwInitTimer(); return GL_TRUE; } //======================================================================== // Close window and shut down library //======================================================================== int _glfwPlatformTerminate(void) { if (_glfwLibrary.X11.cursor) { XFreeCursor(_glfwLibrary.X11.display, _glfwLibrary.X11.cursor); _glfwLibrary.X11.cursor = (Cursor) 0; } terminateDisplay(); _glfwTerminateJoysticks(); // Unload libGL.so if necessary #ifdef _GLFW_DLOPEN_LIBGL if (_glfwLibrary.X11.libGL != NULL) { dlclose(_glfwLibrary.X11.libGL); _glfwLibrary.X11.libGL = NULL; } #endif return GL_TRUE; } //======================================================================== // Get the GLFW version string //======================================================================== const char* _glfwPlatformGetVersionString(void) { const char* version = _GLFW_VERSION_FULL #if defined(_GLFW_HAS_XRANDR) " XRandR" #endif #if defined(_GLFW_HAS_XF86VIDMODE) " Xf86VidMode" #endif #if !defined(_GLFW_HAS_XRANDR) && !defined(_GLFW_HAS_XF86VIDMODE) " no-mode-switching-support" #endif #if defined(_GLFW_HAS_XKB) " Xkb" #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(_GLFW_USE_LINUX_JOYSTICKS) " Linux-joystick-API" #else " no-joystick-support" #endif ; return version; }