using System;
using System.Diagnostics;


namespace Microsoft.Xna.Framework.Graphics
{
	public class RasterizerState : GraphicsResource
	{
        // TODO: We should be asserting if the state has
        // been changed after it has been bound to the device!

        public CullMode CullMode { get; set; }
        public float DepthBias { get; set; }
        public FillMode FillMode { get; set; }
        public bool MultiSampleAntiAlias { get; set; }
        public bool ScissorTestEnable { get; set; }
        public float SlopeScaleDepthBias { get; set; }

		public static readonly RasterizerState CullClockwise;		
		public static readonly RasterizerState CullCounterClockwise;
		public static readonly RasterizerState CullNone;

		public RasterizerState ()
		{
			CullMode = CullMode.CullCounterClockwiseFace;
			FillMode = FillMode.Solid;
			DepthBias = 0;
			MultiSampleAntiAlias = true;
			ScissorTestEnable = false;
			SlopeScaleDepthBias = 0;
		}

		static RasterizerState ()
		{
			CullClockwise = new RasterizerState () {
				CullMode = CullMode.CullClockwiseFace
			};
			CullCounterClockwise = new RasterizerState () {
				CullMode = CullMode.CullCounterClockwiseFace
			};
			CullNone = new RasterizerState () {
				CullMode = CullMode.None
			};
		}
    }
}