Merge branch 'master' of github.com:elmindreda/glfw

Conflicts:
	src/win32_window.c

.gitignore

@@ -4,6 +4,7 @@ CMakeCache.txt
 Makefile
 cmake_uninstall.cmake
 .DS_Store
+docs/Doxyfile
 src/config.h
 src/libglfw.pc
 src/libglfw.so
@@ -32,6 +33,7 @@ tests/peter
 tests/reopen
 tests/sharing
 tests/tearing
+tests/title
 tests/windows
 tests/*.app
 tests/*.exe

examples/boing.c

@@ -569,7 +569,7 @@ int main( void )
    GLFWwindow window;
 
    /* Init GLFW */
-   if( !glfwInit(NULL) )
+   if( !glfwInit() )
    {
       fprintf( stderr, "Failed to initialize GLFW\n" );
       exit( EXIT_FAILURE );

examples/gears.c

@@ -323,7 +323,7 @@ int main(int argc, char *argv[])
 {
     GLFWwindow window;
 
-    if( !glfwInit(NULL) )
+    if( !glfwInit() )
     {
         fprintf( stderr, "Failed to initialize GLFW\n" );
         exit( EXIT_FAILURE );

examples/heightmap.c

@@ -573,7 +573,7 @@ int main(int argc, char** argv)
         }
     }
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "ERROR: Unable to initialize GLFW\n");
         usage();

examples/splitview.c

@@ -442,7 +442,7 @@ int main(void)
     GLFWwindow window;
 
     // Initialise GLFW
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW\n");
         exit(EXIT_FAILURE);

examples/triangle.c

@@ -15,7 +15,7 @@ int main(void)
     GLFWwindow window;
 
     // Initialise GLFW
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW\n");
         exit(EXIT_FAILURE);

examples/wave.c

@@ -379,7 +379,7 @@ int main(int argc, char* argv[])
     GLFWwindow window;
     double t, dt_total, t_old;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "GLFW initialization failed\n");
         exit(EXIT_FAILURE);

include/GL/glfw3.h

@@ -478,8 +478,6 @@ typedef void (* GLFWmouseposfun)(GLFWwindow,int,int);
 typedef void (* GLFWscrollfun)(GLFWwindow,int,int);
 typedef void (* GLFWkeyfun)(GLFWwindow,int,int);
 typedef void (* GLFWcharfun)(GLFWwindow,int);
-typedef void* (* GLFWmallocfun)(size_t);
-typedef void (* GLFWfreefun)(void*);
 
 /* The video mode structure used by glfwGetVideoModes */
 typedef struct
@@ -499,20 +497,13 @@ typedef struct
     unsigned short blue[GLFW_GAMMA_RAMP_SIZE];
 } GLFWgammaramp;
 
-/* Custom memory allocator interface */
-typedef struct
-{
-    GLFWmallocfun malloc;
-    GLFWfreefun free;
-} GLFWallocator;
-
 
 /*************************************************************************
  * Prototypes
  *************************************************************************/
 
 /* Initialization, termination and version querying */
-GLFWAPI int  glfwInit(GLFWallocator* allocator);
+GLFWAPI int  glfwInit(void);
 GLFWAPI void glfwTerminate(void);
 GLFWAPI void glfwGetVersion(int* major, int* minor, int* rev);
 GLFWAPI const char* glfwGetVersionString(void);

readme.html

@@ -272,7 +272,6 @@ version of GLFW.</p>
   <li>Added <code>glfwSetWindowFocusCallback</code> function and <code>GLFWwindowfocusfun</code> type for receiving window focus events</li>
   <li>Added <code>glfwSetWindowIconifyCallback</code> function and <code>GLFWwindowiconifyfun</code> type for receiving window iconification events</li>
   <li>Added <code>glfwGetCurrentContext</code> function for retrieving the window whose OpenGL context is current</li>
-  <li>Added <code>GLFWallocator</code> type and <code>glfwInit</code> parameter for pluggable memory allocator</li>
   <li>Added <code>glfwCopyContext</code> function for copying OpenGL state categories between contexts</li>
   <li>Added <code>GLFW_OPENGL_ES2_PROFILE</code> profile for creating OpenGL ES 2.0 contexts using the <code>GLX_EXT_create_context_es2_profile</code> and <code>WGL_EXT_create_context_es2_profile</code> extensions</li>
   <li>Added <code>GLFW_OPENGL_ROBUSTNESS</code> window hint and associated strategy tokens for <code>GL_ARB_robustness</code> support</li>

src/cocoa_joystick.m

@@ -152,7 +152,7 @@ static void addJoystickElement(_glfwJoystick* joystick, CFTypeRef refElement)
             long number;
             CFTypeRef refType;
 
-            _glfwJoystickElement* element = (_glfwJoystickElement*) _glfwMalloc(sizeof(_glfwJoystickElement));
+            _glfwJoystickElement* element = (_glfwJoystickElement*) malloc(sizeof(_glfwJoystickElement));
 
             CFArrayAppendValue(elementsArray, element);
 
@@ -242,7 +242,7 @@ static void removeJoystick(_glfwJoystick* joystick)
         {
             _glfwJoystickElement* axes =
                 (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick->axes, i);
-            _glfwFree(axes);
+            free(axes);
         }
         CFArrayRemoveAllValues(joystick->axes);
         joystick->numAxes = 0;
@@ -251,7 +251,7 @@ static void removeJoystick(_glfwJoystick* joystick)
         {
             _glfwJoystickElement* button =
                 (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick->buttons, i);
-            _glfwFree(button);
+            free(button);
         }
         CFArrayRemoveAllValues(joystick->buttons);
         joystick->numButtons = 0;
@@ -260,7 +260,7 @@ static void removeJoystick(_glfwJoystick* joystick)
         {
             _glfwJoystickElement* hat =
                 (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick->hats, i);
-            _glfwFree(hat);
+            free(hat);
         }
         CFArrayRemoveAllValues(joystick->hats);
         joystick->hats = 0;

src/init.c

@@ -35,30 +35,6 @@
 #include <stdlib.h>
 
 
-//////////////////////////////////////////////////////////////////////////
-//////                       GLFW internal API                      //////
-//////////////////////////////////////////////////////////////////////////
-
-//========================================================================
-// Allocate memory using the allocator
-//========================================================================
-
-void* _glfwMalloc(size_t size)
-{
-    return _glfwLibrary.allocator.malloc(size);
-}
-
-
-//========================================================================
-// Free memory using the allocator
-//========================================================================
-
-void _glfwFree(void* ptr)
-{
-    _glfwLibrary.allocator.free(ptr);
-}
-
-
 //////////////////////////////////////////////////////////////////////////
 //////                        GLFW public API                       //////
 //////////////////////////////////////////////////////////////////////////
@@ -67,31 +43,13 @@ void _glfwFree(void* ptr)
 // Initialize various GLFW state
 //========================================================================
 
-GLFWAPI int glfwInit(GLFWallocator* allocator)
+GLFWAPI int glfwInit(void)
 {
     if (_glfwInitialized)
         return GL_TRUE;
 
     memset(&_glfwLibrary, 0, sizeof(_glfwLibrary));
 
-    if (allocator)
-    {
-        // Verify that the specified model is complete
-        if (!allocator->malloc || !allocator->free)
-        {
-            _glfwSetError(GLFW_INVALID_VALUE, NULL);
-            return GL_FALSE;
-        }
-
-        _glfwLibrary.allocator = *allocator;
-    }
-    else
-    {
-        // Use the libc malloc and free
-        _glfwLibrary.allocator.malloc = malloc;
-        _glfwLibrary.allocator.free = free;
-    }
-
     // Not all window hints have zero as their default value, so this
     // needs to be here despite the memset above
     _glfwSetDefaultWindowHints();

src/internal.h

@@ -241,8 +241,6 @@ struct _GLFWlibrary
     GLFWkeyfun           keyCallback;
     GLFWcharfun          charCallback;
 
-    GLFWallocator        allocator;
-
     GLFWgammaramp currentRamp;
     GLFWgammaramp originalRamp;
     int           originalRampSize;
@@ -325,10 +323,6 @@ void _glfwPlatformCopyContext(_GLFWwindow* src, _GLFWwindow* dst, unsigned long
 // Prototypes for platform independent internal functions
 //========================================================================
 
-// Memory management (init.c)
-void* _glfwMalloc(size_t size);
-void _glfwFree(void* ptr);
-
 // Fullscren management (fullscreen.c)
 void _glfwSplitBPP(int bpp, int* red, int* green, int* blue);
 

src/win32_init.c

@@ -148,11 +148,11 @@ WCHAR* _glfwCreateWideStringFromUTF8(const char* source)
     if (!length)
         return NULL;
 
-    target = (WCHAR*) _glfwMalloc(sizeof(WCHAR) * (length + 1));
+    target = (WCHAR*) malloc(sizeof(WCHAR) * (length + 1));
 
     if (!MultiByteToWideChar(CP_UTF8, 0, source, -1, target, length + 1))
     {
-        _glfwFree(target);
+        free(target);
         return NULL;
     }
 
@@ -173,11 +173,11 @@ char* _glfwCreateUTF8FromWideString(const WCHAR* source)
     if (!length)
         return NULL;
 
-    target = (char*) _glfwMalloc(length + 1);
+    target = (char*) malloc(length + 1);
 
     if (!WideCharToMultiByte(CP_UTF8, 0, source, -1, target, length + 1, NULL, NULL))
     {
-        _glfwFree(target);
+        free(target);
         return NULL;
     }
 

src/win32_window.c

@@ -195,7 +195,7 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
         return NULL;
     }
 
-    result = (_GLFWfbconfig*) _glfwMalloc(sizeof(_GLFWfbconfig) * count);
+    result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
     if (!result)
     {
         _glfwSetError(GLFW_OUT_OF_MEMORY,
@@ -1257,13 +1257,13 @@ static int choosePixelFormat(_GLFWwindow* window, const _GLFWfbconfig* fbconfig)
     closest = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
     if (!closest)
     {
-        _glfwFree(fbconfigs);
+        free(fbconfigs);
         return 0;
     }
 
     pixelFormat = (int) closest->platformID;
 
-    _glfwFree(fbconfigs);
+    free(fbconfigs);
     fbconfigs = NULL;
     closest = NULL;
 
@@ -1358,7 +1358,7 @@ static int createWindow(_GLFWwindow* window,
         return GL_FALSE;
     }
 
-    _glfwFree(wideTitle);
+    free(wideTitle);
 
     window->WGL.DC = GetDC(window->Win32.handle);
     if (!window->WGL.DC)
@@ -1589,7 +1589,7 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
 
     SetWindowText(window->Win32.handle, wideTitle);
 
-    _glfwFree(wideTitle);
+    free(wideTitle);
 }
 
 

src/window.c

@@ -291,7 +291,7 @@ GLFWAPI GLFWwindow glfwOpenWindow(int width, int height,
         height = 480;
     }
 
-    window = (_GLFWwindow*) _glfwMalloc(sizeof(_GLFWwindow));
+    window = (_GLFWwindow*) malloc(sizeof(_GLFWwindow));
     if (!window)
     {
         _glfwSetError(GLFW_OUT_OF_MEMORY,
@@ -492,7 +492,7 @@ GLFWAPI void glfwCloseWindow(GLFWwindow handle)
         *prev = window->next;
     }
 
-    _glfwFree(window);
+    free(window);
 }
 
 

src/x11_fullscreen.c

@@ -339,7 +339,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
         return 0;
     }
 
-    rgbarray = (int*) _glfwMalloc(sizeof(int) * viscount);
+    rgbarray = (int*) malloc(sizeof(int) * viscount);
     rgbcount = 0;
 
     // Build RGB array
@@ -387,7 +387,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
         sc = XRRGetScreenInfo(_glfwLibrary.X11.display, _glfwLibrary.X11.root);
         sizelist = XRRConfigSizes(sc, &sizecount);
 
-        resarray = (struct _glfwResolution*) _glfwMalloc(sizeof(struct _glfwResolution) * sizecount);
+        resarray = (struct _glfwResolution*) malloc(sizeof(struct _glfwResolution) * sizecount);
 
         for (k = 0;  k < sizecount;  k++)
         {
@@ -407,7 +407,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
 
         XF86VidModeGetAllModeLines(_glfwLibrary.X11.display, screen, &modecount, &modelist);
 
-        resarray = (struct _glfwResolution*) _glfwMalloc(sizeof(struct _glfwResolution) * modecount);
+        resarray = (struct _glfwResolution*) malloc(sizeof(struct _glfwResolution) * modecount);
 
         for (k = 0;  k < modecount;  k++)
         {
@@ -436,7 +436,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
     if (!resarray)
     {
         rescount = 1;
-        resarray = (struct _glfwResolution*) _glfwMalloc(sizeof(struct _glfwResolution) * rescount);
+        resarray = (struct _glfwResolution*) malloc(sizeof(struct _glfwResolution) * rescount);
 
         resarray[0].width = DisplayWidth(_glfwLibrary.X11.display, screen);
         resarray[0].height = DisplayHeight(_glfwLibrary.X11.display, screen);
@@ -459,8 +459,8 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
 
     XFree(vislist);
 
-    _glfwFree(resarray);
+    free(resarray);
-    _glfwFree(rgbarray);
+    free(rgbarray);
 
     return count;
 }

src/x11_window.c

@@ -316,7 +316,7 @@ static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, unsigned int* found)
         }
     }
 
-    result = (_GLFWfbconfig*) _glfwMalloc(sizeof(_GLFWfbconfig) * count);
+    result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
     if (!result)
     {
         _glfwSetError(GLFW_OUT_OF_MEMORY,
@@ -1415,12 +1415,12 @@ int _glfwPlatformOpenWindow(_GLFWwindow* window,
         result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
         if (!result)
         {
-            _glfwFree(fbconfigs);
+            free(fbconfigs);
             return GL_FALSE;
         }
 
         closest = *result;
-        _glfwFree(fbconfigs);
+        free(fbconfigs);
     }
 
     if (!createContext(window, wndconfig, (GLXFBConfigID) closest.platformID))

tests/accuracy.c

@@ -59,7 +59,7 @@ int main(void)
 {
     GLFWwindow window;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/defaults.c

@@ -69,7 +69,7 @@ int main(void)
     int i, width, height;
     GLFWwindow window;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/dynamic.c

@@ -59,7 +59,7 @@ int main(void)
         exit(EXIT_FAILURE);
     }
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW\n");
         exit(EXIT_FAILURE);

tests/events.c

@@ -330,7 +330,7 @@ int main(void)
 
     setlocale(LC_ALL, "");
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/fsaa.c

@@ -81,7 +81,7 @@ int main(int argc, char** argv)
         }
     }
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/fsfocus.c

@@ -75,7 +75,7 @@ int main(void)
 {
     GLFWwindow window;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/gamma.c

@@ -35,11 +35,20 @@
 
 #include "getopt.h"
 
+#define STEP_SIZE 0.1f
+
 static GLfloat gamma = 1.0f;
 
 static void usage(void)
 {
-    printf("Usage: gammatest [-h] [-f]\n");
+    printf("Usage: gamma [-h] [-f]\n");
+}
+
+static void set_gamma(float value)
+{
+    gamma = value;
+    printf("Gamma: %f\n", gamma);
+    glfwSetGamma(gamma);
 }
 
 static void key_callback(GLFWwindow window, int key, int action)
@@ -50,22 +59,28 @@ static void key_callback(GLFWwindow window, int key, int action)
     switch (key)
     {
         case GLFW_KEY_ESCAPE:
+        {
             glfwCloseWindow(window);
             break;
+        }
+
         case GLFW_KEY_KP_ADD:
         case GLFW_KEY_Q:
-            gamma += 0.1f;
+        {
-            printf("Gamma: %f\n", gamma);
+            set_gamma(gamma + STEP_SIZE);
-            glfwSetGamma(gamma);
             break;
+        }
+
         case GLFW_KEY_KP_SUBTRACT:
         case GLFW_KEY_W:
-            gamma -= 0.1f;
+        {
-            printf("Gamma: %f\n", gamma);
+            if (gamma - STEP_SIZE > 0.f)
-            glfwSetGamma(gamma);
+                set_gamma(gamma - STEP_SIZE);
+
             break;
         }
     }
+}
 
 static void size_callback(GLFWwindow window, int width, int height)
 {
@@ -96,7 +111,7 @@ int main(int argc, char** argv)
         }
     }
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);
@@ -124,7 +139,7 @@ int main(int argc, char** argv)
         exit(EXIT_FAILURE);
     }
 
-    printf("Gamma: %f\n", gamma);
+    set_gamma(1.f);
 
     glfwSwapInterval(1);
     glfwSetKeyCallback(key_callback);

tests/glfwinfo.c

@@ -51,7 +51,7 @@
 
 static void usage(void)
 {
-    printf("Usage: version [-h] [-m MAJOR] [-n MINOR] [-d] [-l] [-f] [-p PROFILE] [-r STRATEGY]\n");
+    printf("Usage: glfwinfo [-h] [-m MAJOR] [-n MINOR] [-d] [-l] [-f] [-p PROFILE] [-r STRATEGY]\n");
     printf("available profiles: " PROFILE_NAME_CORE " " PROFILE_NAME_COMPAT " " PROFILE_NAME_ES2 "\n");
     printf("available strategies: " STRATEGY_NAME_NONE " " STRATEGY_NAME_LOSE "\n");
 }
@@ -183,7 +183,7 @@ int main(int argc, char** argv)
 
     glfwSetErrorCallback(error_callback);
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/iconify.c

@@ -90,7 +90,7 @@ int main(int argc, char** argv)
         }
     }
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/joysticks.c

@@ -94,7 +94,7 @@ int main(void)
     double update;
 
     /* Initialise GLFW */
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/listmodes.c

@@ -21,7 +21,7 @@ int main(void)
     GLFWvidmode dtmode, modes[400];
     int modecount, i;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/peter.c

@@ -111,7 +111,7 @@ static GLboolean open_window(void)
 
 int main(void)
 {
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/reopen.c

@@ -84,7 +84,7 @@ static GLboolean open_window(int width, int height, int mode)
 {
     double base;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         return GL_FALSE;

tests/sharing.c

@@ -92,8 +92,6 @@ static void draw_quad(GLuint texture)
     glBindTexture(GL_TEXTURE_2D, texture);
     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 
-    glColor3f(0.6f, 0.f, 0.6f);
-
     glBegin(GL_QUADS);
 
     glTexCoord2f(0.f, 0.f);
@@ -117,7 +115,7 @@ int main(int argc, char** argv)
     GLuint texture;
     int x, y;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);
@@ -142,6 +140,11 @@ int main(int argc, char** argv)
         exit(EXIT_FAILURE);
     }
 
+    // Set drawing color for the first context and copy it to the second
+    glfwMakeContextCurrent(windows[0]);
+    glColor3f(0.6f, 0.f, 0.6f);
+    glfwCopyContext(windows[0], windows[1], GL_CURRENT_BIT);
+
     // Put the second window to the right of the first one
     glfwGetWindowPos(windows[0], &x, &y);
     glfwSetWindowPos(windows[1], x + WIDTH + 50, y);

tests/tearing.c

@@ -44,7 +44,7 @@ int main(void)
     float position;
     GLFWwindow window;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/title.c

@@ -41,7 +41,7 @@ int main(void)
 {
     GLFWwindow window;
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
         exit(EXIT_FAILURE);

tests/windows.c

@@ -46,7 +46,7 @@ int main(void)
     GLboolean running = GL_TRUE;
     GLFWwindow windows[4];
 
-    if (!glfwInit(NULL))
+    if (!glfwInit())
     {
         fprintf(stderr, "Failed to initialize GLFW: %s\n",
                 glfwErrorString(glfwGetError()));