diff --git a/framework/platform-dx/adapter.cpp b/framework/platform-dx/adapter.cpp
index d74932b..a736e4c 100644
--- a/framework/platform-dx/adapter.cpp
+++ b/framework/platform-dx/adapter.cpp
@@ -86,6 +86,35 @@ namespace xna {
 		}
 	}
 
+	bool GraphicsAdapter::QueryBackBufferFormat(
+		GraphicsProfile graphicsProfile, SurfaceFormat format,
+		DepthFormat depthFormat, Int multiSampleCount,
+		SurfaceFormat& selectedFormat, DepthFormat& selectedDepthFormat,
+		Int& selectedMultiSampleCount) const 
+	{
+		comptr<IDXGIOutput> pOutput = nullptr;		
+
+		if (impl->dxAdapter->EnumOutputs(0, pOutput.GetAddressOf()) != DXGI_ERROR_NOT_FOUND){
+			comptr<IDXGIOutput1> pOutput1 = nullptr;
+
+			pOutput->QueryInterface(IID_IDXGIOutput1, (void**)pOutput1.GetAddressOf());
+
+			DXGI_MODE_DESC1 modeToMath{};
+			modeToMath.Format = DxHelpers::SurfaceFormatToDx(format);			
+
+			DXGI_MODE_DESC1 closestMath;			
+			pOutput1->FindClosestMatchingMode1(&modeToMath, &closestMath, nullptr);
+
+			selectedFormat = DxHelpers::SurfaceFormatToXna(closestMath.Format);
+			selectedDepthFormat = depthFormat;
+			selectedMultiSampleCount = multiSampleCount;
+
+			return selectedFormat == format;
+		}
+
+		return false;
+	}
+
 	//INTERNAL FUNCTIONS
 
 	sptr<DisplayModeCollection> getSupportedDisplayModes(comptr<IDXGIAdapter1>& dxAdapter) {
diff --git a/inc/xna/enumerations.hpp b/inc/xna/enumerations.hpp
index bb007e0..17f1471 100644
--- a/inc/xna/enumerations.hpp
+++ b/inc/xna/enumerations.hpp
@@ -255,8 +255,12 @@ namespace xna {
         None,
     };
 
+    //Identifies the set of supported devices for the game based on device capabilities. 
     enum class GraphicsProfile {
+        //Use a limited set of graphic features and capabilities, allowing the game to support the widest variety of devices, including all Windows-based computers.        
         Reach,
+        //Use the largest available set of graphic features and capabilities to target devices,
+        //such as an Xbox 360 console and a Windows-based computer, that have more enhanced graphic capabilities. 
         HiDef
     };
 
diff --git a/inc/xna/graphics/adapter.hpp b/inc/xna/graphics/adapter.hpp
index b44d678..30c9220 100644
--- a/inc/xna/graphics/adapter.hpp
+++ b/inc/xna/graphics/adapter.hpp
@@ -48,11 +48,21 @@ namespace xna {
 
 		//Retrieves a value used to identify the manufacturer.
 		constexpr Uint VendorId() const { return vendorId; }
+		
+		//Gets or sets a NULL device. 
+		static bool UseNullDevice() { return useNullDevice; }
+		//Gets or sets a NULL device. 
+		static void UseNullDevice(bool value) { useNullDevice = value; }
+		
+		//Gets or sets a reference device.
+		constexpr static bool UseReferenceDevice() { return useReferenceDevice; }
+		//Gets or sets a reference device. 
+		constexpr static void UseReferenceDevice(bool value) { useReferenceDevice = value; }
 
 		//Tests to see if the adapter supports the requested profile. 
 		bool IsProfileSupported(GraphicsProfile graphicsProfile) {
-			return false;
-		}
+			return true;
+		}		
 
 		//Queries the adapter for support for the requested back buffer format.
 		bool QueryBackBufferFormat(
@@ -63,9 +73,7 @@ namespace xna {
 			SurfaceFormat& selectedFormat,
 			DepthFormat& selectedDepthFormat,
 			Int& selectedMultiSampleCount
-		) {
-			return false;
-		}
+		) const;
 
 		//Queries the adapter for support for the requested render target format. 
 		bool QueryRenderTargetFormat(
@@ -75,9 +83,10 @@ namespace xna {
 			Int multiSampleCount,
 			SurfaceFormat& selectedFormat,
 			DepthFormat& selectedDepthFormat,
-			int& selectedMultiSampleCount
-		) {
-			return false;
+			Int& selectedMultiSampleCount
+		) const {
+			return QueryBackBufferFormat(graphicsProfile, format, depthFormat, multiSampleCount,
+				selectedFormat, selectedDepthFormat, selectedMultiSampleCount);
 		}
 
 	private:
@@ -92,6 +101,9 @@ namespace xna {
 		sptr<DisplayMode> currentDisplayMode{ nullptr };
 		sptr<DisplayModeCollection> supportedDisplayModes{ nullptr };
 
+		inline static bool useNullDevice = false;
+		inline static bool useReferenceDevice = false;
+
 		GraphicsAdapter();
 
 	public: