Texture2D.GetData Generic Method (T[])

GetData Generic Method (T[])

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XNA Game Studio 3.1

Texture2D.GetData Generic Method (T[])

Copies texture data into an array.

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

Syntax

public void GetData<T> (
         T[] data
) where T : ValueType

Type Parameters

T: The type of the elements in the array. This is usually a Microsoft.Xna.Framework.Graphics.PackedVector type that matches the Format of the texture, but it can be any fundamental type that matches the bit size of the surface format.

Parameters

data: The array to receive texture data.

Exceptions

Exception type	Condition
ArgumentNullException	data must be of sufficient length to receive the data.
InvalidOperationException	The vertex stride is larger than the vertex buffer, or the vertex stride is too small for the type of data requested.

Example

In this example, the color of the pixel beneath the mouse is retrieved from the back buffer.

if (Mouse.GetState().LeftButton == ButtonState.Pressed &&   
    // If the left button is pressed
    Mouse.GetState().X > 0 && Mouse.GetState().Y > 0 &&     
    // and we are inside the game window
    (Mouse.GetState().X < 
    GraphicsDevice.PresentationParameters.BackBufferWidth) &&
    (Mouse.GetState().Y < 
    GraphicsDevice.PresentationParameters.BackBufferHeight))
{
    backBufferData = new ResolveTexture2D(
        GraphicsDevice,
        GraphicsDevice.PresentationParameters.BackBufferWidth,
        GraphicsDevice.PresentationParameters.BackBufferHeight,
        1,
        GraphicsDevice.PresentationParameters.BackBufferFormat);


    Rectangle sourceRectangle =
        new Rectangle(Mouse.GetState().X, Mouse.GetState().Y, 1, 1);

    Color[] retrievedColor = new Color[1];

    GraphicsDevice.ResolveBackBuffer(backBufferData);

    backBufferData.GetData<Color>(
        0,
        sourceRectangle,
        retrievedColor,
        0,
        1);
}

Reference

Texture2D Class
Texture2D Members
Microsoft.Xna.Framework.Graphics Namespace

Platforms

Xbox 360, Windows XP SP2, Windows Vista, Zune