Added an Mac OS OpenGL sample

build.cake

@@ -868,6 +868,10 @@ Task ("samples")
             c.Configuration = "Release"; 
             c.Properties ["Platform"] = new [] { "iPhoneSimulator" };
         });
+        RunNuGetRestore ("./samples/Skia.OSX.GLDemo/Skia.OSX.GLDemo.sln");
+        DotNetBuild ("./samples/Skia.OSX.GLDemo/Skia.OSX.GLDemo.sln", c => { 
+            c.Configuration = "Release"; 
+        });
     }
     
     if (IsRunningOnWindows ()) {
@@ -884,6 +888,11 @@ Task ("samples")
         DotNetBuild ("./samples/Skia.Forms.Demo/Skia.Forms.Demo.Windows.sln", c => { 
             c.Configuration = "Release"; 
         });
+        RunNuGetRestore ("./samples/Skia.WindowsDesktop.GLDemo/Skia.WindowsDesktop.GLDemo.sln");
+        DotNetBuild ("./samples/Skia.WindowsDesktop.GLDemo/Skia.WindowsDesktop.GLDemo.sln", c => { 
+            c.Configuration = "Release"; 
+            c.Properties ["Platform"] = new [] { "x86" };
+        });
     }
     
     RunNuGetRestore ("./samples/Skia.WindowsDesktop.Demo/Skia.WindowsDesktop.Demo.sln");
@@ -891,12 +900,6 @@ Task ("samples")
         c.Configuration = "Release"; 
         c.Properties ["Platform"] = new [] { "x86" };
     });
-    
-    RunNuGetRestore ("./samples/Skia.WindowsDesktop.GLDemo/Skia.WindowsDesktop.GLDemo.sln");
-    DotNetBuild ("./samples/Skia.WindowsDesktop.GLDemo/Skia.WindowsDesktop.GLDemo.sln", c => { 
-        c.Configuration = "Release"; 
-        c.Properties ["Platform"] = new [] { "x86" };
-    });
 });
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////

samples/Skia.OSX.GLDemo/AppDelegate.cs

@@ -0,0 +1,29 @@
+using AppKit;
+using Foundation;
+
+namespace Skia.OSX.Demo
+{
+	[Register ("AppDelegate")]
+	public partial class AppDelegate : NSApplicationDelegate
+	{
+		public AppDelegate ()
+		{
+		}
+
+		public override void DidFinishLaunching (NSNotification notification)
+		{
+			// Insert code here to initialize your application
+		}
+
+		public override void WillTerminate (NSNotification notification)
+		{
+			// Insert code here to tear down your application
+		}
+
+		public override bool ApplicationShouldTerminateAfterLastWindowClosed (NSApplication sender)
+		{
+			return true;
+		}
+	}
+}
+

samples/Skia.OSX.GLDemo/AppDelegate.designer.cs

@@ -0,0 +1,19 @@
+// WARNING
+//
+// This file has been generated automatically by Xamarin Studio to store outlets and
+// actions made in the UI designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+using System.CodeDom.Compiler;
+
+namespace Skia.OSX.Demo
+{
+	partial class AppDelegate
+	{
+		
+		void ReleaseDesignerOutlets ()
+		{
+		}
+	}
+}

samples/Skia.OSX.GLDemo/Info.plist

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleName</key>
+	<string>Skia.OSX.Demo</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.xamarin.skia-osx-demo</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.10</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>billholmes</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+	<key>NSMainStoryboardFile</key>
+	<string>Main</string>
+	<key>XSAppIconAssets</key>
+	<string>Resources/Images.xcassets/AppIcons.appiconset</string>
+	
+</dict>
+</plist>

samples/Skia.OSX.GLDemo/Main.cs

@@ -0,0 +1,13 @@
+using AppKit;
+
+namespace Skia.OSX.Demo
+{
+	static class MainClass
+	{
+		static void Main (string[] args)
+		{
+			NSApplication.Init ();
+			NSApplication.Main (args);
+		}
+	}
+}

samples/Skia.OSX.GLDemo/Main.storyboard

@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="10116" systemVersion="15E65" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" initialViewController="B8D-0N-5wS">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="10116"/>
+    </dependencies>
+    <scenes>
+        <!--Application-->
+        <scene sceneID="JPo-4y-FX3">
+            <objects>
+                <application id="hnw-xV-0zn" sceneMemberID="viewController">
+                    <menu key="mainMenu" title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+                        <items>
+                            <menuItem title="Skia.OSX.Demo" id="1Xt-HY-uBw">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Skia.OSX.Demo" systemMenu="apple" id="uQy-DD-JDr">
+                                    <items>
+                                        <menuItem title="About Skia.OSX.Demo" id="5kV-Vb-QxS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="orderFrontStandardAboutPanel:" target="Ady-hI-5gd" id="Exp-CZ-Vem"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="eHP-pT-vMg"/>
+                                        <menuItem title="Quit Skia.OSX.Demo" keyEquivalent="q" id="4sb-4s-VLi">
+                                            <connections>
+                                                <action selector="terminate:" target="Ady-hI-5gd" id="Te7-pn-YzF"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                    <connections>
+                        <outlet property="delegate" destination="Voe-Tx-rLC" id="PrD-fu-P6m"/>
+                    </connections>
+                </application>
+                <customObject id="Voe-Tx-rLC" customClass="AppDelegate"/>
+                <customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="75" y="0.0"/>
+        </scene>
+        <!--Window Controller-->
+        <scene sceneID="R2V-B0-nI4">
+            <objects>
+                <windowController id="B8D-0N-5wS" sceneMemberID="viewController">
+                    <window key="window" title="Window" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" animationBehavior="default" id="IQv-IB-iLA">
+                        <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+                        <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
+                        <rect key="contentRect" x="196" y="240" width="480" height="270"/>
+                        <rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
+                    </window>
+                    <connections>
+                        <segue destination="XfG-lQ-9wD" kind="relationship" relationship="window.shadowedContentViewController" id="cq2-FE-JQM"/>
+                    </connections>
+                </windowController>
+                <customObject id="Oky-zY-oP4" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="75" y="250"/>
+        </scene>
+        <!--View Controller-->
+        <scene sceneID="hIz-AP-VOD">
+            <objects>
+                <viewController id="XfG-lQ-9wD" customClass="ViewController" sceneMemberID="viewController">
+                    <customView key="view" id="QUA-QF-Q3f">
+                        <rect key="frame" x="0.0" y="0.0" width="450" height="300"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                        <subviews>
+                            <view translatesAutoresizingMaskIntoConstraints="NO" id="m2S-Jp-Qdl" customClass="SkiaView">
+                                <rect key="frame" x="0.0" y="0.0" width="450" height="300"/>
+                            </view>
+                            <popUpButton verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="mnJ-8z-WRI">
+                                <rect key="frame" x="228" y="17" width="205" height="26"/>
+                                <constraints>
+                                    <constraint firstAttribute="width" constant="200" id="3Ya-mE-NFc"/>
+                                    <constraint firstAttribute="height" constant="21" id="PW1-2o-QII"/>
+                                </constraints>
+                                <popUpButtonCell key="cell" type="push" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" id="5te-c2-WKW">
+                                    <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
+                                    <font key="font" metaFont="menu"/>
+                                    <menu key="menu" id="LKv-bG-q8C"/>
+                                </popUpButtonCell>
+                                <connections>
+                                    <action selector="PopUpButtonAction:" target="XfG-lQ-9wD" id="lmM-6c-sIb"/>
+                                </connections>
+                            </popUpButton>
+                        </subviews>
+                        <constraints>
+                            <constraint firstAttribute="bottom" secondItem="mnJ-8z-WRI" secondAttribute="bottom" constant="20" id="A3L-Bb-rlF"/>
+                            <constraint firstAttribute="trailing" secondItem="mnJ-8z-WRI" secondAttribute="trailing" constant="20" id="DYI-UX-Zkb"/>
+                            <constraint firstAttribute="bottom" secondItem="m2S-Jp-Qdl" secondAttribute="bottom" id="Gw9-r7-0Df"/>
+                            <constraint firstItem="m2S-Jp-Qdl" firstAttribute="top" secondItem="QUA-QF-Q3f" secondAttribute="top" id="Uut-tC-oBU"/>
+                            <constraint firstItem="m2S-Jp-Qdl" firstAttribute="leading" secondItem="QUA-QF-Q3f" secondAttribute="leading" id="Xcr-Wg-5ia"/>
+                            <constraint firstAttribute="trailing" secondItem="m2S-Jp-Qdl" secondAttribute="trailing" id="rZp-9d-Lpb"/>
+                        </constraints>
+                    </customView>
+                    <connections>
+                        <outlet property="PopUpButton" destination="mnJ-8z-WRI" id="mEQ-lK-fod"/>
+                        <outlet property="SkiaView" destination="m2S-Jp-Qdl" id="8ta-WW-AHG"/>
+                    </connections>
+                </viewController>
+                <customObject id="rPt-NT-nkU" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="75" y="655"/>
+        </scene>
+    </scenes>
+</document>

samples/Skia.OSX.GLDemo/Resources/Images.xcassets/AppIcons.appiconset/Contents.json

@@ -0,0 +1,222 @@
+{
+  "images": [
+    {
+      "size": "29x29",
+      "scale": "1x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "29x29",
+      "scale": "2x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "29x29",
+      "scale": "3x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "40x40",
+      "scale": "2x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "40x40",
+      "scale": "3x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "57x57",
+      "scale": "1x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "57x57",
+      "scale": "2x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "60x60",
+      "scale": "2x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "60x60",
+      "scale": "3x",
+      "idiom": "iphone"
+    },
+    {
+      "size": "29x29",
+      "scale": "1x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "29x29",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "40x40",
+      "scale": "1x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "40x40",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "50x50",
+      "scale": "1x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "50x50",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "83.5x83.5",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "72x72",
+      "scale": "1x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "72x72",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "76x76",
+      "scale": "1x",
+      "idiom": "ipad"
+    },
+    {
+      "size": "76x76",
+      "scale": "2x",
+      "idiom": "ipad"
+    },
+    {
+      "role": "notificationCenter",
+      "size": "24x24",
+      "subtype": "38mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "notificationCenter",
+      "size": "27.5x27.5",
+      "subtype": "42mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "companionSettings",
+      "size": "29x29",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "companionSettings",
+      "size": "29x29",
+      "scale": "3x",
+      "idiom": "watch"
+    },
+    {
+      "role": "appLauncher",
+      "size": "40x40",
+      "subtype": "38mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "longLook",
+      "size": "44x44",
+      "subtype": "42mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "quickLook",
+      "size": "86x86",
+      "subtype": "38mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "role": "quickLook",
+      "size": "98x98",
+      "subtype": "42mm",
+      "scale": "2x",
+      "idiom": "watch"
+    },
+    {
+      "filename": "skia_16x16.png",
+      "size": "16x16",
+      "scale": "1x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_32x32.png",
+      "size": "16x16",
+      "scale": "2x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_32x32.png",
+      "size": "32x32",
+      "scale": "1x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_64x64.png",
+      "size": "32x32",
+      "scale": "2x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_128x128.png",
+      "size": "128x128",
+      "scale": "1x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_256x256.png",
+      "size": "128x128",
+      "scale": "2x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_256x256.png",
+      "size": "256x256",
+      "scale": "1x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_512x512.png",
+      "size": "256x256",
+      "scale": "2x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_512x512.png",
+      "size": "512x512",
+      "scale": "1x",
+      "idiom": "mac"
+    },
+    {
+      "filename": "skia_1024x1024.png",
+      "size": "512x512",
+      "scale": "2x",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

samples/Skia.OSX.GLDemo/Skia.OSX.GLDemo.csproj

@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectTypeGuids>{A3F8F2AB-B479-4A4A-A458-A89E7DC349F1};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ProjectGuid>{1730229c-f631-4ba9-86b3-d62828d8815b}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>Skia.OSX.GLDemo</RootNamespace>
+    <MonoMacResourcePrefix>Resources</MonoMacResourcePrefix>
+    <AssemblyName>Skia.OSX.GLDemo</AssemblyName>
+    <TargetFrameworkIdentifier>Xamarin.Mac</TargetFrameworkIdentifier>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+    <Profiling>true</Profiling>
+    <UseRefCounting>true</UseRefCounting>
+    <UseSGen>true</UseSGen>
+    <IncludeMonoRuntime>false</IncludeMonoRuntime>
+    <CreatePackage>false</CreatePackage>
+    <CodeSigningKey>Mac Developer</CodeSigningKey>
+    <EnableCodeSigning>false</EnableCodeSigning>
+    <EnablePackageSigning>false</EnablePackageSigning>
+    <XamMacArch>x86_64</XamMacArch>
+    <PackageSigningKey>Developer ID Installer</PackageSigningKey>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>full</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <ConsolePause>false</ConsolePause>
+    <Profiling>false</Profiling>
+    <UseRefCounting>true</UseRefCounting>
+    <UseSGen>true</UseSGen>
+    <IncludeMonoRuntime>true</IncludeMonoRuntime>
+    <CreatePackage>true</CreatePackage>
+    <CodeSigningKey>Mac Developer</CodeSigningKey>
+    <EnableCodeSigning>true</EnableCodeSigning>
+    <EnablePackageSigning>false</EnablePackageSigning>
+    <XamMacArch>x86_64</XamMacArch>
+    <LinkMode>Full</LinkMode>
+    <PackageSigningKey>Developer ID Installer</PackageSigningKey>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.Mac" />
+    <Reference Include="SkiaSharp">
+      <HintPath>packages\SkiaSharp.1.53.1.1-gpu-preview1\lib\XamarinMac\SkiaSharp.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="OpenTK" />
+  </ItemGroup>
+  <ItemGroup>
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\Contents.json" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-128.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-128%402x.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-16.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-16%402x.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-256.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-256%402x.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-32.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-32%402x.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-512.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\AppIcon-512%402x.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_16x16.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_32x32.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_64x64.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_128x128.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_256x256.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_512x512.png" />
+    <ImageAsset Include="Resources\Images.xcassets\AppIcons.appiconset\skia_1024x1024.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Info.plist" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Main.cs" />
+    <Compile Include="AppDelegate.cs" />
+    <Compile Include="ViewController.cs" />
+    <Compile Include="ViewController.designer.cs">
+      <DependentUpon>ViewController.cs</DependentUpon>
+    </Compile>
+    <Compile Include="SkiaView.cs" />
+    <Compile Include="SkiaView.designer.cs">
+      <DependentUpon>SkiaView.cs</DependentUpon>
+    </Compile>
+    <Compile Include="AppDelegate.designer.cs">
+      <DependentUpon>AppDelegate.cs</DependentUpon>
+    </Compile>
+    <Compile Include="..\SharedDemo\SkiaSharp.Demos.cs">
+      <Link>SkiaSharp.Demos.cs</Link>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <InterfaceDefinition Include="Main.storyboard" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="..\SharedDemo\embedded-font.ttf">
+      <Link>embedded-font.ttf</Link>
+    </EmbeddedResource>
+    <EmbeddedResource Include="..\SharedDemo\baboon.png">
+      <Link>baboon.png</Link>
+    </EmbeddedResource>
+    <EmbeddedResource Include="..\SharedDemo\color-wheel.png">
+      <Link>color-wheel.png</Link>
+    </EmbeddedResource>
+    <EmbeddedResource Include="..\SharedDemo\adobe-dng.dng">
+      <Link>adobe-dng.dng</Link>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup>
+    <BundleResource Include="..\SharedDemo\content-font.ttf">
+      <Link>Resources\content-font.ttf</Link>
+    </BundleResource>
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\Mac\Xamarin.Mac.CSharp.targets" />
+  <Import Project="packages\SkiaSharp.1.53.1.1-gpu-preview1\build\XamarinMac\SkiaSharp.targets" Condition="Exists('packages\SkiaSharp.1.53.1.1-gpu-preview1\build\XamarinMac\SkiaSharp.targets')" />
+</Project>

samples/Skia.OSX.GLDemo/Skia.OSX.GLDemo.sln

@@ -0,0 +1,17 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Skia.OSX.GLDemo", "Skia.OSX.GLDemo.csproj", "{1730229c-f631-4ba9-86b3-d62828d8815b}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1730229c-f631-4ba9-86b3-d62828d8815b}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1730229c-f631-4ba9-86b3-d62828d8815b}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1730229c-f631-4ba9-86b3-d62828d8815b}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1730229c-f631-4ba9-86b3-d62828d8815b}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

samples/Skia.OSX.GLDemo/SkiaView.cs

@@ -0,0 +1,74 @@
+using System;
+using AppKit;
+using OpenTK.Graphics.OpenGL;
+
+using SkiaSharp;
+
+namespace Skia.OSX.Demo
+{
+	public partial class SkiaView : NSOpenGLView
+	{
+		Demos.Sample sample;
+
+		GRContext grContext;
+
+		public SkiaView (IntPtr handle) : base (handle)
+		{
+			AddGestureRecognizer (new NSClickGestureRecognizer (OnClicked));
+		}
+
+		public override void PrepareOpenGL ()
+		{
+			base.PrepareOpenGL ();
+
+			grContext = GRContext.Create (GRBackend.OpenGL);
+		}
+
+		public override void DrawRect (CoreGraphics.CGRect dirtyRect)
+		{
+			base.DrawRect (dirtyRect);
+
+			if (grContext != null)
+			{
+				var sampleCount = grContext.GetRecommendedSampleCount(GRPixelConfig.Rgba8888, 96.0f);
+
+				var desc = new GRBackendRenderTargetDesc
+				{
+					Width = (int)Bounds.Width,
+					Height = (int)Bounds.Height,
+					Config = GRPixelConfig.Rgba8888,
+					Origin = GRSurfaceOrigin.TopLeft,
+					SampleCount = sampleCount,
+					StencilBits = 0,
+					RenderTargetHandle = IntPtr.Zero,
+				};
+
+				using (var surface = SKSurface.Create (grContext, desc))
+				{
+					var skcanvas = surface.Canvas;
+
+					sample.Method (skcanvas, (int)Bounds.Width, (int)Bounds.Height);
+
+					skcanvas.Flush ();
+				}
+
+				GL.Flush();
+			}
+		}
+
+		void OnClicked ()
+		{
+			Sample?.TapMethod?.Invoke ();
+		}
+
+		public Demos.Sample Sample {
+			get {
+				return sample;
+			}
+			set {
+				sample = value;
+				SetNeedsDisplayInRect (Bounds);
+			}
+		}
+	}
+}

samples/Skia.OSX.GLDemo/SkiaView.designer.cs

@@ -0,0 +1,20 @@
+// WARNING
+//
+// This file has been generated automatically by Xamarin Studio to store outlets and
+// actions made in the UI designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+using System.CodeDom.Compiler;
+
+namespace Skia.OSX.Demo
+{
+	[Register ("SkiaView")]
+	partial class SkiaView
+	{
+
+		void ReleaseDesignerOutlets ()
+		{
+		}
+	}
+}

samples/Skia.OSX.GLDemo/ViewController.cs

@@ -0,0 +1,56 @@
+using System;
+
+using AppKit;
+using Foundation;
+using System.IO;
+
+namespace Skia.OSX.Demo
+{
+	public partial class ViewController : NSViewController
+	{
+		public ViewController (IntPtr handle) : base (handle)
+		{
+		}
+
+		public override void ViewDidLoad ()
+		{
+			base.ViewDidLoad ();
+
+			// set up resource paths
+			string fontName = "content-font.ttf";
+			SkiaSharp.Demos.CustomFontPath = NSBundle.MainBundle.PathForResource (Path.GetFileNameWithoutExtension (fontName), Path.GetExtension (fontName));
+			var dir = Path.Combine (Path.GetTempPath (), "SkiaSharp.Demos", Path.GetRandomFileName ());
+			if (!Directory.Exists (dir))
+			{
+				Directory.CreateDirectory (dir);
+			}
+			SkiaSharp.Demos.WorkingDirectory = dir;
+			SkiaSharp.Demos.OpenFileDelegate = path =>
+			{
+				if (!NSWorkspace.SharedWorkspace.OpenFile (Path.Combine (dir, path)))
+				{
+					NSAlert.WithMessage ("SkiaSharp", "OK", null, null, "Unable to open file.").RunSheetModal (View.Window);
+				}
+			};
+
+			PopUpButton.AddItems (SkiaSharp.Demos.SamplesForPlatform (SkiaSharp.Demos.Platform.OSX | SkiaSharp.Demos.Platform.OpenGL));
+			PopUpButton.SelectItem (0);
+			SkiaView.Sample = SkiaSharp.Demos.GetSample (PopUpButton.SelectedItem.Title);
+		}
+
+		partial void PopUpButtonAction (NSObject sender)
+		{
+			SkiaView.Sample = SkiaSharp.Demos.GetSample (PopUpButton.SelectedItem.Title);
+		}
+
+		public override NSObject RepresentedObject {
+			get {
+				return base.RepresentedObject;
+			}
+			set {
+				base.RepresentedObject = value;
+				// Update the view, if already loaded.
+			}
+		}
+	}
+}

samples/Skia.OSX.GLDemo/ViewController.designer.cs

@@ -0,0 +1,37 @@
+// WARNING
+//
+// This file has been generated automatically by Xamarin Studio to store outlets and
+// actions made in the UI designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+using System.CodeDom.Compiler;
+
+namespace Skia.OSX.Demo
+{
+	[Register ("ViewController")]
+	partial class ViewController
+	{
+		[Outlet]
+		AppKit.NSPopUpButton PopUpButton { get; set; }
+
+		[Outlet]
+		Skia.OSX.Demo.SkiaView SkiaView { get; set; }
+
+		[Action ("PopUpButtonAction:")]
+		partial void PopUpButtonAction (Foundation.NSObject sender);
+		
+		void ReleaseDesignerOutlets ()
+		{
+			if (PopUpButton != null) {
+				PopUpButton.Dispose ();
+				PopUpButton = null;
+			}
+
+			if (SkiaView != null) {
+				SkiaView.Dispose ();
+				SkiaView = null;
+			}
+		}
+	}
+}

samples/Skia.OSX.GLDemo/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="SkiaSharp" version="1.53.1.1-gpu-preview1" targetFramework="xamarinmac20" />
+</packages>