Added _GLFW_USE_RETINA.

src/cocoa_init.m

@@ -132,6 +132,9 @@ const char* _glfwPlatformGetVersionString(void)
 #if defined(_GLFW_USE_MENUBAR)
         " menubar"
 #endif
+#if defined(_GLFW_USE_RETINA)
+        " retina"
+#endif
 #if defined(_GLFW_BUILD_DLL)
         " dynamic"
 #endif

src/cocoa_window.m

@@ -940,7 +940,9 @@ static GLboolean createWindow(_GLFWwindow* window,
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
     if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
     {
+#if defined(_GLFW_USE_RETINA)
         [window->ns.view setWantsBestResolutionOpenGLSurface:YES];
+#endif
 
         if (wndconfig->resizable)
             [window->ns.object setCollectionBehavior:NSWindowCollectionBehaviorFullScreenPrimary];

src/glfw_config.h.in

@@ -73,6 +73,8 @@
 #cmakedefine _GLFW_USE_CHDIR
 // Define this to 1 if glfwCreateWindow should populate the menu bar
 #cmakedefine _GLFW_USE_MENUBAR
+// Define this to 1 if windows should use full resolution on Retina displays
+#cmakedefine _GLFW_USE_MENUBAR
 
 // Define this to 1 if using OpenGL as the client library
 #cmakedefine _GLFW_USE_OPENGL