Returns true if the format is an extended range format. With extended range format, the blue, green, and red components are linearly encoded, and their values range from -0.752941 to 1.25098. The alpha component is always clamped to a [0.0, 1.0] range in sampling, rendering, and writing operations, despite supporting values outside this range. Returns false otherwise.

public static bool IsXRFormat(GraphicsFormat format)

GraphicsFormat