Fix for better Mac support

Build/Projects/MonoGame.Framework.definition

@@ -343,7 +343,7 @@
       <Platforms>Windows8,WindowsPhone81</Platforms>
     </Compile>
     <Compile Include="TextInputEventArgs.cs">
-      <Platforms>Angle,Linux,MacOS,Windows,WindowsGL,WindowsUniversal</Platforms>
+      <Platforms>Android,Angle,iOS,Linux,MacOS,Windows,WindowsGL,WindowsUniversal</Platforms>
     </Compile>
     <Compile Include="Threading.cs">
       <Platforms>Android,Angle,iOS,Linux,MacOS,Ouya,WindowsGL,WindowsPhone,tvOS</Platforms>

MonoGame.Framework/Graphics/GraphicsDevice.cs

@@ -109,7 +109,7 @@ private bool PixelShaderDirty
         // Use WeakReference for the global resources list as we do not know when a resource
         // may be disposed and collected. We do not want to prevent a resource from being
         // collected by holding a strong reference to it in this list.
-        private readonly List<WeakReference> _resources = new List<WeakReference>();
+        private readonly HashSet<WeakReference> _resources = new HashSet<WeakReference>();
 
 		// TODO Graphics Device events need implementing
 		public event EventHandler<EventArgs> DeviceLost;
@@ -479,7 +479,7 @@ protected virtual void Dispose(bool disposing)
                     // Dispose of all remaining graphics resources before disposing of the graphics device
                     lock (_resourcesLock)
                     {
-                        foreach (var resource in _resources.ToArray())
+                        foreach (var resource in (new List<WeakReference>(_resources)).ToArray())
                         {
                             var target = resource.Target as IDisposable;
                             if (target != null)
@@ -570,7 +570,7 @@ internal void OnDeviceResetting()
                 }
 
                 // Remove references to resources that have been garbage collected.
-                _resources.RemoveAll(wr => !wr.IsAlive);
+                _resources.RemoveWhere(wr => !wr.IsAlive);
             }
         }
 

MonoGame.Framework/Graphics/RenderTarget2D.DirectX.cs

@@ -126,5 +126,11 @@ DepthStencilView IRenderTarget.GetDepthStencilView()
             GenerateIfRequired();
             return _depthStencilView;
         }
+
+        public void InheritDepthStencil(RenderTarget2D from)
+        {
+            if (from == null) _depthStencilView = GraphicsDevice._depthStencilView;
+            else _depthStencilView = from._depthStencilView;
+        }
     }
 }

MonoGame.Framework/Graphics/RenderTarget2D.OpenGL.cs

@@ -67,5 +67,17 @@ protected override void Dispose(bool disposing)
 
             base.Dispose(disposing);
         }
+
+        public void InheritDepthStencil(RenderTarget2D from)
+        {
+            if (from == null)
+            {
+                //must use other method
+            } else
+            {
+                ((IRenderTarget)this).GLDepthBuffer = ((IRenderTarget)from).GLDepthBuffer;
+                ((IRenderTarget)this).GLStencilBuffer = ((IRenderTarget)from).GLStencilBuffer;
+            }
+        }
     }
 }

MonoGame.Framework/MacOS/MacGamePlatform.cs

@@ -313,7 +313,9 @@ public override void EnterFullScreen()
                 if (oldTitle != null)
                     _gameWindow.Title = oldTitle;
 
-                _mainWindow.IsVisible = false;
+                //FIX: see https://github.com/MonoGame/MonoGame/pull/4286
+                //_mainWindow.IsVisible = false;
+
                 // FIXME: EnterFullScreen gets called very early and interferes
                 //        with Synchronous mode, so disabling this for now.
                 //        Hopefully this does not cause excessive havoc.
@@ -356,7 +358,9 @@ public override void ExitFullScreen()
                 // Set the level here to normal
                 _mainWindow.Level = NSWindowLevel.Normal;
 
-                _mainWindow.IsVisible = false;
+                //FIX: see https://github.com/MonoGame/MonoGame/pull/4286
+                //_mainWindow.IsVisible = false;
+
                 // FIXME: EnterFullScreen gets called very early and interferes
                 //        with Synchronous mode, so disabling this for now.
                 //        Hopefully this does not cause excessive havoc.

Tools/2MGFX/ShaderData.mojo.cs

@@ -170,7 +170,7 @@ public static ShaderData CreateGLSL(byte[] byteCode, bool isVertexShader, List<C
 
 			// Add the required precision specifiers for GLES.
 
-            var floatPrecision = dxshader.IsVertexShader ? "precision highp float;\r\n" : "precision mediump float;\r\n";
+            var floatPrecision = dxshader.IsVertexShader ? "precision highp float;\r\n" : "precision highp float;\r\n";
 
 			glslCode = "#ifdef GL_ES\r\n" +
                  floatPrecision +