History: MOGREIntermediateTutorial7Source

            This is the C# source for ((MOGRE Intermediate Tutorial 7)).

{CODE(wrap="1",colors="c++")}
namespace Mogre.Demo.RenderToTexure
{
    class Program
    {
        static void Main(string[] args)
        {
            try { new RTTTutorial().Go(); }
            catch
            {
                if (OgreException.IsThrown) ExampleApplication.Example.ShowOgreException();
                else throw;
            }
        }
    }

    class RTTTutorial : ExampleApplication.Example
    {
        Plane mPlane;
        Entity mPlaneEnt;
        SceneNode mPlaneNode;

        public override void CreateScene()
        {
            sceneMgr.AmbientLight = new ColourValue(0.2f, 0.2f, 0.2f);

            Light light = sceneMgr.CreateLight("MainLight");
            light.Position = new Vector3(20, 80, 50);

            camera.Position = new Vector3(60, 200, 70);
            camera.LookAt(0, 0, 0);

            //First of all, we need to create a texture.
            MaterialPtr mat = MaterialManager.Singleton.Create("PlaneMat", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME);
            TextureUnitState tuisTexture = mat.GetTechnique(0).GetPass(0).CreateTextureUnitState("grass_1024.jpg");

            mPlane = new Plane();
            mPlane.d = 0;
            mPlane.normal = Vector3.UNIT_Y;

            MeshManager.Singleton.CreatePlane("PlaneMesh", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME, mPlane, 120, 120, 1, 1, true, 1, 1, 1, Vector3.UNIT_Z);
            mPlaneEnt = sceneMgr.CreateEntity("PlaneEntity", "PlaneMesh");
            mPlaneEnt.SetMaterialName("PlaneMat");

            mPlaneNode = sceneMgr.RootSceneNode.CreateChildSceneNode();
            mPlaneNode.AttachObject(mPlaneEnt);

            //-------------
            TexturePtr rtt_texture = TextureManager.Singleton.CreateManual("RttTex", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME, TextureType.TEX_TYPE_2D, window.Width, window.Height, 0, PixelFormat.PF_R8G8B8, (int)TextureUsage.TU_RENDERTARGET);

            RenderTexture renderTexture = rtt_texture.GetBuffer().GetRenderTarget();
            renderTexture.AddViewport(camera);
            renderTexture.GetViewport(0).SetClearEveryFrame(true);
            renderTexture.GetViewport(0).BackgroundColour = ColourValue.Black;
            renderTexture.GetViewport(0).OverlaysEnabled = false;

            // Either this way
            renderTexture.IsAutoUpdated = true;
            //or this way
            //renderTexture.Update();
            // Now save the contents
            //renderTexture.WriteContentsToFile("start.png");

            //-------------
            mMiniScreen = new Rectangle2D(true);
            mMiniScreen.SetCorners(0f, 0f, 1.0f, -1.0f);
            mMiniScreen.BoundingBox = new AxisAlignedBox(-100000.0f * Vector3.UNIT_SCALE, 100000.0f * Vector3.UNIT_SCALE);

            SceneNode miniScreenNode = sceneMgr.RootSceneNode.CreateChildSceneNode("MiniScreenNode");
            miniScreenNode.AttachObject(mMiniScreen);
            //--------------
            //MaterialPtr renderMaterial = MaterialManager.Singleton.Create("RttMat", ResourceGroupManager.DEFAULT_RESOURCE_GROUP_NAME);
            //renderMaterial.CreateTechnique().CreatePass();
            //Pass pass = renderMaterial.GetTechnique(0).GetPass(0);
            //pass.LightingEnabled = false;
            //pass.CreateTextureUnitState("RttTex");
            //mMiniScreen.SetMaterial("RttMat");
            //--------------
            MaterialPtr renderMaterial = MaterialManager.Singleton.GetByName("Sepia");
            renderMaterial.GetTechnique(0).GetPass(0).GetTextureUnitState(0).SetTextureName("RttTex");
            mMiniScreen.SetMaterial("Sepia");

            renderTexture.PreRenderTargetUpdate += renderTexture_PreRenderTargetUpdate;
            renderTexture.PostRenderTargetUpdate += renderTexture_PostRenderTargetUpdate;
            root.FrameRenderingQueued += frameRenderingQueued;
        }

        private Rectangle2D mMiniScreen;

        void renderTexture_PreRenderTargetUpdate(RenderTargetEvent_NativePtr evt)
        {
            mMiniScreen.Visible = false;
        }

        void renderTexture_PostRenderTargetUpdate(RenderTargetEvent_NativePtr evt)
        {
            mMiniScreen.Visible = true;
        }

        bool frameRenderingQueued(FrameEvent evt)
        {
            mPlaneNode.Yaw(new Radian(evt.timeSinceLastFrame));
            return true;
        }

    }
}
{CODE}