Merge pull request #135 from thefiddler/xquartz

XQuartz support (X11 on Mac)

Source/OpenTK/OpenTK.dll.config

@@ -11,7 +11,15 @@
   <dllmap os="osx" dll="openal32.dll" target="/System/Library/Frameworks/OpenAL.framework/OpenAL" />
   <dllmap os="osx" dll="alut.dll" target="/System/Library/Frameworks/OpenAL.framework/OpenAL" />
   <dllmap os="osx" dll="libGLES.dll" target="/System/Library/Frameworks/OpenGLES.framework/OpenGLES" />
+  <dllmap os="osx" dll="libGLESv1_CM.dll" target="/System/Library/Frameworks/OpenGLES.framework/OpenGLES" />
   <dllmap os="osx" dll="libGLESv2.dll" target="/System/Library/Frameworks/OpenGLES.framework/OpenGLES" />
   <dllmap os="osx" dll="opencl.dll" target="/System/Library/Frameworks/OpenCL.framework/OpenCL"/>
   <dllmap os="osx" dll="SDL2.dll" target="libSDL2.dylib"/>
+  <!-- XQuartz compatibility (X11 on Mac) -->
+  <dllmap os="osx" dll="libGL.so.1" target="/usr/X11/lib/libGL.dylib"/>
+  <dllmap os="osx" dll="libX11" target="/usr/X11/lib/libX11.dylib"/>
+  <dllmap os="osx" dll="libXcursor.so.1" target="/usr/X11/lib/libXcursor.dylib"/>
+  <dllmap os="osx" dll="libXi" target="/usr/X11/lib/libXi.dylib"/>
+  <dllmap os="osx" dll="libXinerama" target="/usr/X11/lib/libXinerama.dylib"/>
+  <dllmap os="osx" dll="libXrandr.so.2" target="/usr/X11/lib/libXrandr.dylib"/>
 </configuration>

Source/OpenTK/Platform/Factory.cs

@@ -53,9 +53,9 @@ namespace OpenTK.Platform
 
             // Create regular platform backend
             if (Configuration.RunningOnSdl2) Default = new SDL2.Sdl2Factory();
+            else if (Configuration.RunningOnX11) Default = new X11.X11Factory();
             else if (Configuration.RunningOnWindows) Default = new Windows.WinFactory();
             else if (Configuration.RunningOnMacOS) Default = new MacOS.MacOSFactory();
-            else if (Configuration.RunningOnX11) Default = new X11.X11Factory();
             else Default = new UnsupportedPlatform();
 
             // Create embedded platform backend for EGL / OpenGL ES.
@@ -70,9 +70,9 @@ namespace OpenTK.Platform
             }
             else if (Egl.Egl.IsSupported)
             {
-                if (Configuration.RunningOnWindows) Embedded = new Egl.EglWinPlatformFactory();
+                if (Configuration.RunningOnX11) Embedded = new Egl.EglX11PlatformFactory();
+                else if (Configuration.RunningOnWindows) Embedded = new Egl.EglWinPlatformFactory();
                 else if (Configuration.RunningOnMacOS) Embedded = new Egl.EglMacPlatformFactory();
-                else if (Configuration.RunningOnX11) Embedded = new Egl.EglX11PlatformFactory();
                 else Embedded = new UnsupportedPlatform();
             }
             else

Source/OpenTK/Platform/X11/Bindings/Glx.cs

@@ -344,9 +344,9 @@ namespace OpenTK.Platform.X11
 
         [DllImport(Library, EntryPoint = "glXQueryDrawable")]
         public static extern ErrorCode QueryDrawable(IntPtr dpy, IntPtr drawable, GLXAttribute attribute, out int value);
-        
+
         [DllImport(Library, EntryPoint = "glXQueryExtension")]
-        public static extern bool QueryExtension(IntPtr dpy, ref int errorBase, ref int eventBase);
+        public static extern bool QueryExtension(IntPtr dpy, out int errorBase, out int eventBase);
 
         [DllImport(Library, EntryPoint = "glXQueryExtensionsString")]
         static extern IntPtr QueryExtensionsStringInternal(IntPtr dpy, int screen);
@@ -356,6 +356,9 @@ namespace OpenTK.Platform.X11
             return Marshal.PtrToStringAnsi(QueryExtensionsStringInternal(dpy, screen));
         }
 
+        [DllImport(Library, EntryPoint = "glXQueryVersion")]
+        public static extern bool QueryVersion(IntPtr dpy, out int major, out int minor);
+
         [DllImport(Library, EntryPoint = "glXCreateContext")]
         public static extern IntPtr CreateContext(IntPtr dpy, IntPtr vis, IntPtr shareList, bool direct);
 

Source/OpenTK/Platform/X11/X11GLContext.cs

@@ -54,14 +54,34 @@ namespace OpenTK.Platform.X11
             if (window == null)
                 throw new ArgumentNullException("window");
 
+            // Do not move this lower, as almost everything requires the Display
+            // property to be correctly set.
+            Display = ((X11WindowInfo)window).Display;
+
+            // Check that GLX is supported. We cannot proceed to create
+            // an OpenGL context without the GLX extension.
+            int error_base;
+            int event_base;
+            int glx_major;
+            int glx_minor;
+            using (new XLock(Display))
+            {
+                bool supported = Glx.QueryExtension(Display, out error_base, out event_base);
+                supported &= Glx.QueryVersion(Display, out glx_major, out glx_minor);
+                if (supported)
+                {
+                    Debug.Print("[X11] GLX supported. Version is {0}.{1}", glx_major, glx_minor);
+                }
+                else
+                {
+                    throw new NotSupportedException("[X11] GLX extension is not supported.");
+                }
+            }
+
             Mode = ModeSelector.SelectGraphicsMode(
                 mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples,
                 mode.AccumulatorFormat, mode.Buffers, mode.Stereo);
 
-            // Do not move this lower, as almost everything requires the Display
-            // property to be correctly set.
-            Display = ((X11WindowInfo)window).Display;
-            
             currentWindow = (X11WindowInfo)window;
             currentWindow.VisualInfo = SelectVisual(Mode, currentWindow);
             

Source/OpenTK/Platform/X11/X11Joystick.cs

@@ -42,14 +42,14 @@ namespace OpenTK.Platform.X11
         public JoystickState State;
     }
 
+    // Note: despite what the name says, this class is Linux-specific.
     sealed class X11Joystick : IJoystickDriver2
     {
         #region Fields
 
         readonly object sync = new object();
 
-        readonly FileSystemWatcher watcher = new FileSystemWatcher(JoystickPath);
+        readonly FileSystemWatcher watcher = new FileSystemWatcher();
-        readonly FileSystemWatcher watcher_legacy = new FileSystemWatcher(JoystickPathLegacy);
 
         readonly Dictionary<int, int> index_to_stick = new Dictionary<int, int>();
         List<JoystickDevice<X11JoyDetails>> sticks = new List<JoystickDevice<X11JoyDetails>>();
@@ -62,43 +62,38 @@ namespace OpenTK.Platform.X11
 
         public X11Joystick()
         {
-            watcher.Created += JoystickAdded;
+            string path =
-            watcher.Deleted += JoystickRemoved;
+                Directory.Exists(JoystickPath) ? JoystickPath :
-            watcher.EnableRaisingEvents = true;
+                Directory.Exists(JoystickPathLegacy) ? JoystickPathLegacy :
+                String.Empty;
 
-            watcher_legacy.Created += JoystickAdded;
+            if (!String.IsNullOrEmpty(path))
-            watcher_legacy.Deleted += JoystickRemoved;
+            {
-            watcher_legacy.EnableRaisingEvents = true;
+                watcher.Path = path;
 
-            OpenJoysticks();
+                watcher.Created += JoystickAdded;
+                watcher.Deleted += JoystickRemoved;
+                watcher.EnableRaisingEvents = true;
+
+                OpenJoysticks(path);
+            }
         }
 
         #endregion
 
         #region Private Members
 
-        void OpenJoysticks()
+        void OpenJoysticks(string path)
         {
             lock (sync)
             {
-                foreach (string file in Directory.GetFiles(JoystickPath))
+                foreach (string file in Directory.GetFiles(path))
                 {
                     JoystickDevice<X11JoyDetails> stick = OpenJoystick(file);
                     if (stick != null)
                     {
                         //stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
-                        //number, stick.Axis.Count, stick.Button.Count, JoystickPath);
+                        //number, stick.Axis.Count, stick.Button.Count, path);
-                        sticks.Add(stick);
-                    }
-                }
-
-                foreach (string file in Directory.GetFiles(JoystickPathLegacy))
-                {
-                    JoystickDevice<X11JoyDetails> stick = OpenJoystick(file);
-                    if (stick != null)
-                    {
-                        //stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
-                        //number, stick.Axis.Count, stick.Button.Count, JoystickPathLegacy);
                         sticks.Add(stick);
                     }
                 }
@@ -447,6 +442,7 @@ namespace OpenTK.Platform.X11
                 {
                 }
 
+                watcher.Dispose();
                 foreach (JoystickDevice<X11JoyDetails> js in sticks)
                 {
                     CloseJoystick(js);