using System;
using ANX.Framework.Graphics;
using ANX.Framework.NonXNA;
using Dx11 = SharpDX.Direct3D11;
using ANX.RenderSystem.Windows.Metro.Shader;

// 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

namespace ANX.RenderSystem.Windows.Metro
{
	public class EffectPass_Metro : INativeEffectPass
	{
		#region Private
		private ExtendedShaderPass nativePass;
		private Effect parentEffect;
		private Dx11.VertexShader vertexShader;
		private Dx11.PixelShader pixelShader;
		#endregion

		#region Public
		public string Name
		{
			get;
			private set;
		}

		public EffectPass Pass
		{
			get;
			private set;
		}

		public Dx11.VertexShader VertexShader
		{
			get
			{
				if (vertexShader == null)
				{
					vertexShader = new Dx11.VertexShader(
					    NativeDxDevice.Current.NativeDevice, nativePass.VertexCode);
				}

				return vertexShader;
			}
		}

		public Dx11.PixelShader PixelShader
		{
			get
			{
				if (pixelShader == null)
				{
					pixelShader = new Dx11.PixelShader(
						NativeDxDevice.Current.NativeDevice, nativePass.PixelCode);
				}

				return pixelShader;
			}
		}
		#endregion

		#region Constructor
		public EffectPass_Metro(Effect setParentEffect, ExtendedShaderPass setNativePass)
		{
			Name = setNativePass.Name;
			nativePass = setNativePass;
			parentEffect = setParentEffect;

			Pass = new EffectPass(parentEffect);
		}
		#endregion

		public Dx11.InputLayout BuildLayout(Dx11.Device d3dDevice,
			Dx11.InputElement[] elements)
		{
			return new Dx11.InputLayout(d3dDevice, nativePass.VertexCode, elements);
		}
	}
}