DrawTargetTexture2D, Xen.Graphics C# (CSharp)代码示例

示例#1

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文件： SimpleElement.cs 项目： shadarath/Wirtualna-rzeczywistosc

		/// <summary>
		/// Construct the element, using a <see cref="DrawTargetTexture2D"/> as the texture source
		/// </summary>
		/// <param name="sizeInPixels"></param>
		/// <param name="textureSource"></param>
		public TexturedElement(DrawTargetTexture2D textureSource, Vector2 sizeInPixels) : base(sizeInPixels)
		{
			if (textureSource == null)
				throw new ArgumentNullException();

			this.texture = textureSource.GetTexture();
			this.textureSource = textureSource;
		}

示例#2

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文件： Draw to texture.cs 项目： shadarath/Wirtualna-rzeczywistosc

		//NEW CODE
		protected override void Initialise()
		{
			//draw targets usually need a camera.
			var camera = new Camera3D();
			//look at the sphere, which will be at 0,0,0
			camera.LookAt(Vector3.Zero, new Vector3(0, 0, 4), Vector3.UnitY);


			//create the draw target texture in the same way the DrawSphere sample created the draw target screen
			//creates a 128x128 texture (the pixelation should be visible)
			drawToTexture = new DrawTargetTexture2D(camera, 128, 128, SurfaceFormat.Color, DepthFormat.Depth24Stencil8);

			//make the texture clear colour different from the screen, so it's more obvious
			drawToTexture.ClearBuffer.ClearColour = Color.WhiteSmoke;

			//create the sphere (reused from Tutorial_03)
			var sphere = new Tutorial_03.SphereDrawer(Vector3.Zero);

			//Note, the sphere is added to the texture, not the screen
			drawToTexture.Add(sphere);


			//now, create the drawToScreen object..

			//The same camera is being used, although it doesn't have to be.
			drawToScreen = new DrawTargetScreen(camera);
			drawToScreen.ClearBuffer.ClearColour = Color.CornflowerBlue;


			var sizeInPixels = new Vector2(512,512);

			//Now create a 2D helper element that will display the texture on screen

			Xen.Ex.Graphics2D.TexturedElement displayTexture = null;

			//this helper class can directly take a DrawTargetTexture2D as a constructor parameter.

			//drawToTexture's Texture2D can be accessed with drawToTexture.GetTexture(),

			//However, at this point, drawToTexture.GetTexture() will be null - as the draw
			//target has yet to be drawn to.

			//drawToTexture.Warm() can be called, which will create the resources now.
			//However calling Warm() doesn't totally solve the problem because the texture 
			//will change when content needs reloading (this happens after a device reset, etc)

			//The 2D helper element takes care of this itself.
			//Content loading/reloading and dealing with GetTexture() will be covered in the next example.
			//for now, the helper class will handle things.

			//create the 2D helper element, which will display the texture on the screen.
			displayTexture = new TexturedElement(drawToTexture, sizeInPixels);

			//add it to the screen
			drawToScreen.Add(displayTexture);
		}

示例#3

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文件： Menu.cs 项目： shadarath/Wirtualna-rzeczywistosc

		protected override void Initialise()
		{
			var tutorials = new Dictionary<string, Type>();
			Program.FindTutorials(tutorials);
			
			Camera3D camera = new Camera3D();

			drawToScreen = new DrawTargetScreen(camera);
			
			backgroundParticles = new ParticleSystem(this.UpdateManager);
			backgroundParticles.GlobalValues[0] = ArrowXOffset;
			backgroundParticles.GlobalValues[2] = (float)this.WindowWidth;
			backgroundParticles.GlobalValues[3] = (float)this.WindowHeight;

			particlesTarget = new DrawTargetTexture2D(camera, this.WindowWidth, this.WindowHeight, SurfaceFormat.Color, DepthFormat.None);
			particlesBlurred = new DrawTargetTexture2D(camera, this.WindowWidth / 2, this.WindowHeight / 2, SurfaceFormat.Color, DepthFormat.None);

			DrawTargetTexture2D inter0 = null, inter1 = null;
			quaterDownsample = new TextureDownsample(particlesTarget, particlesBlurred, ref inter0, ref inter1, particlesBlurred.Width, particlesBlurred.Height);

			inter0 = new DrawTargetTexture2D(camera, particlesBlurred.Width, particlesBlurred.Height, SurfaceFormat.Color, DepthFormat.None);
			blurFilter = new BlurFilter(BlurFilterFormat.SevenSampleBlur, 1, particlesBlurred, inter0);

			backroundDrawer = new VelocityBillboardParticles2DElement(backgroundParticles, false);
			particlesTarget.Add(backroundDrawer);

			//draw the resolved particles to the screen
			drawToScreen.Add(new TexturedElement(particlesTarget, new Vector2(1, 1), true));

			//background block other elements are inserted into. invisible
			var selectionBlock = new Xen.Ex.Graphics2D.SolidColourElement(new Color(0, 0, 0, 0), new Vector2(ElementWidth, tutorials.Count * ElementSeparation));
			selectionBlock.AlphaBlendState = AlphaBlendState.Alpha;
			selectionBlock.VerticalAlignment = VerticalAlignment.Top;

			this.menuBlock = selectionBlock;

			int y_pos = 0;
			foreach (var tutorial in tutorials)
			{
				var tut_item = new TutorialSelection(tutorial.Key, y_pos, this.Content, selectionBlock, this.UpdateManager, tutorial.Value);

				y_pos -= ElementSeparation;
				buttons.Add(tut_item);
			}

			drawToScreen.Add(selectionBlock);	

			var bloom = new TexturedElement(particlesBlurred, new Vector2(1, 1), true);
			bloom.AlphaBlendState = AlphaBlendState.AdditiveSaturate;
			drawToScreen.Add(bloom);

			this.logo = new TexturedElement(new Vector2(282,100));
			this.logo.VerticalAlignment = VerticalAlignment.Top;
			this.logo.HorizontalAlignment = HorizontalAlignment.Centre;
			this.logo.Position = new Vector2(0, -50);

			this.helperText = new TextElementRect(new Vector2(800,100),"Use the DPAD to select an item, press 'A' to run the example\nWhen running an example, press 'back' to return to this menu");
			this.helperText.VerticalAlignment = VerticalAlignment.Bottom;
			this.helperText.HorizontalAlignment = HorizontalAlignment.Centre;
			this.helperText.TextHorizontalAlignment = TextHorizontalAlignment.Centre;
			this.helperText.TextVerticalAlignment = VerticalAlignment.Centre;
			this.helperText.Colour = Color.Gray;

			drawToScreen.Add(logo);
			drawToScreen.Add(helperText);
		}

示例#4

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