Is there a fast alternative to creating a Texture2D from a Bitmap object in XNA?

Question

I\'ve looked around a lot and the only methods I\'ve found for creating a Texture2D from a Bitmap are:

using  (MemoryStream s = new  MemoryStream())
{
   bmp.Sav         


        

Answer 1

You want LockBits? You get LockBits.

In my implementation I passed in the GraphicsDevice from the caller so I could make this method generic and static.

public static Texture2D GetTexture2DFromBitmap(GraphicsDevice device, Bitmap bitmap)
{
    Texture2D tex = new Texture2D(device, bitmap.Width, bitmap.Height, 1, TextureUsage.None, SurfaceFormat.Color);

    BitmapData data = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), System.Drawing.Imaging.ImageLockMode.ReadOnly, bitmap.PixelFormat);

    int bufferSize = data.Height * data.Stride;

    //create data buffer 
    byte[] bytes = new byte[bufferSize];    

    // copy bitmap data into buffer
    Marshal.Copy(data.Scan0, bytes, 0, bytes.Length);

    // copy our buffer to the texture
    tex.SetData(bytes);

    // unlock the bitmap data
    bitmap.UnlockBits(data);

    return tex;
}