History: MOGREIntermediateTutorial7Source

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;

}

}
}