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RenderTargetCube Class

Represents a cubic texture resource that will be written to at the end of a render pass.

Namespace: Microsoft.Xna.Framework.Graphics
Assembly: Microsoft.Xna.Framework (in microsoft.xna.framework.dll)

public class RenderTargetCube : RenderTarget

After a render pass the render target contains the color information of a rendered image.

Render targets represent a linear area of display memory and usually reside in the display memory of the display card. Because of this, RenderTargetCube objects must be recreated when the device is reset.

To use a RenderTargetCube, you must:

  1. Create the RenderTargetCube.
    shadowRenderTarget = GfxComponent.CreateRenderTarget(GraphicsDevice,
        1, SurfaceFormat.Single);
    
    public static RenderTarget2D CreateRenderTarget(GraphicsDevice device, int numberLevels, 
        SurfaceFormat surface)
    {
    
        if (!GraphicsAdapter.DefaultAdapter.CheckDeviceFormat(DeviceType.Hardware,
            GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Format, TextureUsage.None,
            QueryUsages.None, ResourceType.RenderTarget, surface))
        {
            // Fall back to current display format
            surface = device.DisplayMode.Format;
        }
        return new RenderTarget2D(device,
            device.PresentationParameters.BackBufferWidth,
            device.PresentationParameters.BackBufferHeight,
            numberLevels, surface,
            device.PresentationParameters.MultiSampleType,
            device.PresentationParameters.MultiSampleQuality);
    
    }
    
  2. Set the RenderTargetCube.
    GraphicsDevice.SetRenderTarget(0, shadowRenderTarget);
    
  3. Draw into the RenderTargetCube.
    // Render the shadow map
    GraphicsDevice.Clear(Color.Black);
    DrawScene(MyEffect.shadowMap);
    
  4. Reset the original RenderTargetCube. null as the default render target - i.e. the back buffer.
    // Set render target back to the back buffer
    GraphicsDevice.SetRenderTarget(0, null);
    
  5. Call GetTexture to retrieve the contents of the RenderTargetCube.
    // Return the shadow map as a texture
    return shadowRenderTarget.GetTexture();
    

Xbox 360, Windows XP SP2, Windows Vista

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