#region Using Statements
using System;
using ANX.Framework.Graphics;
using ANX.Framework.NonXNA;

#endregion

// This file is part of the ANX.Framework created by the
// "ANX.Framework developer group" and released under the Ms-PL license.
// For details see: http://anxframework.codeplex.com/license

using Dx11 = SharpDX.Direct3D11;

namespace ANX.RenderSystem.Windows.DX11
{
	public class RasterizerState_DX11 : BaseStateObject<Dx11.RasterizerState>, INativeRasterizerState
	{
		private Dx11.RasterizerStateDescription description;

		#region Public
		public CullMode CullMode
		{
			set
			{
				SharpDX.Direct3D11.CullMode cullMode = FormatConverter.Translate(value);
				SetValueIfDifferentAndMarkDirty(ref description.CullMode, ref cullMode);
			}
		}

		public float DepthBias
		{
			set
			{
				// XNA uses a float value in the range of 0f..16f as value
				// DirectX 10 uses a INT value

				int depthBiasValue = (int)(value * IntMaxOver16);
				SetValueIfDifferentAndMarkDirty(ref description.DepthBias, ref depthBiasValue);
			}
		}

		public FillMode FillMode
		{
			set
			{
				SharpDX.Direct3D11.FillMode fillMode = FormatConverter.Translate(value);
				SetValueIfDifferentAndMarkDirty(ref description.FillMode, ref fillMode);
			}
		}

		public bool MultiSampleAntiAlias
		{
			set
			{
				if (description.IsMultisampleEnabled != value)
				{
					isDirty = true;
					description.IsMultisampleEnabled = value;
				}
			}
		}

		public bool ScissorTestEnable
		{
			set
			{
				if (description.IsScissorEnabled != value)
				{
					isDirty = true;
					description.IsScissorEnabled = value;
				}
			}
		}

		public float SlopeScaleDepthBias
		{
			set
			{
				SetValueIfDifferentAndMarkDirty(ref description.SlopeScaledDepthBias, ref value);
			}
		}
		#endregion

		protected override void Init()
		{
			description.IsAntialiasedLineEnabled = false;
		}

		protected override Dx11.RasterizerState CreateNativeState(GraphicsDevice graphics)
		{
			Dx11.DeviceContext context = (graphics.NativeDevice as GraphicsDeviceDX).NativeDevice;
			return new Dx11.RasterizerState(context.Device, description);
		}

		protected override void ApplyNativeState(GraphicsDevice graphics)
		{
			Dx11.DeviceContext context = (graphics.NativeDevice as GraphicsDeviceDX).NativeDevice;
			context.Rasterizer.State = nativeState;
		}
    }
}