From e395eae9571b1ec1ba2a0112e4476ba695449f80 Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Fri, 5 Jun 2015 17:52:45 +1000
Subject: [PATCH] Added BeginFrame/EndFrame to IGraphicsApi.

---
 Game/Game.cs                | 3 ++-
 GraphicsAPI/DirectXApi.cs   | 9 +++++++++
 GraphicsAPI/IGraphicsApi.cs | 4 ++++
 GraphicsAPI/OpenGLApi.cs    | 7 +++++++
 4 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/Game/Game.cs b/Game/Game.cs
index 833551bc0..6aa6fcfca 100644
--- a/Game/Game.cs
+++ b/Game/Game.cs
@@ -179,6 +179,7 @@ namespace ClassicalSharp {
 		double ticksAccumulator = 0, imageCheckAccumulator = 0;
 		
 		protected override void OnRenderFrame( FrameEventArgs e ) {
+			Graphics.BeginFrame( this );
 			accumulator += e.Time;
 			imageCheckAccumulator += e.Time;
 			ticksAccumulator += e.Time;
@@ -253,7 +254,7 @@ namespace ClassicalSharp {
 				Graphics.TakeScreenshot( path, ClientSize );
 				screenshotRequested = false;
 			}
-			SwapBuffers();
+			Graphics.EndFrame( this );
 		}
 		
 		void RenderPlayers( double deltaTime, float t ) {
diff --git a/GraphicsAPI/DirectXApi.cs b/GraphicsAPI/DirectXApi.cs
index 8a2b4b3d6..5798236d7 100644
--- a/GraphicsAPI/DirectXApi.cs
+++ b/GraphicsAPI/DirectXApi.cs
@@ -386,6 +386,15 @@ namespace ClassicalSharp.GraphicsAPI {
 
 		#endregion
 		
+		public override void BeginFrame( Game game ) {
+			device.BeginScene();
+		}
+		
+		public override void EndFrame( Game game ) {
+			device.EndScene();
+			device.Present();
+		}
+		
 		public override void OnWindowResize( int newWidth, int newHeight ) {
 			throw new NotSupportedException();
 		}
diff --git a/GraphicsAPI/IGraphicsApi.cs b/GraphicsAPI/IGraphicsApi.cs
index 6e7a02acc..8cba9f185 100644
--- a/GraphicsAPI/IGraphicsApi.cs
+++ b/GraphicsAPI/IGraphicsApi.cs
@@ -191,6 +191,10 @@ namespace ClassicalSharp.GraphicsAPI {
 		public virtual void PrintApiSpecificInfo() {
 		}
 		
+		public abstract void BeginFrame( Game game );
+		
+		public abstract void EndFrame( Game game );
+		
 		public abstract void OnWindowResize( int newWidth, int newHeight );
 		
 		protected void InitDynamicBuffers() {
diff --git a/GraphicsAPI/OpenGLApi.cs b/GraphicsAPI/OpenGLApi.cs
index 2a3a08f47..f9bf2281d 100644
--- a/GraphicsAPI/OpenGLApi.cs
+++ b/GraphicsAPI/OpenGLApi.cs
@@ -432,6 +432,13 @@ namespace ClassicalSharp.GraphicsAPI {
 		}
 		#endif
 		
+		public override void BeginFrame( Game game ) {
+		}
+		
+		public override void EndFrame( Game game ) {
+			game.SwapBuffers();
+		}
+		
 		public override void PrintApiSpecificInfo() {
 			Console.WriteLine( "OpenGL vendor: " + GL.GetString( StringName.Vendor ) );
 			Console.WriteLine( "OpenGL renderer: " + GL.GetString( StringName.Renderer ) );