78 lines
1.9 KiB
C#
78 lines
1.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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// This file is part of the ANX.Framework created by the
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// "ANX.Framework developer group" and released under the Ms-PL license.
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// For details see: http://anxframework.codeplex.com/license
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namespace ANX.Framework.Graphics
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{
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public class VertexDeclaration : GraphicsResource
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{
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private VertexElement[] elements;
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public int VertexStride
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{
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get;
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private set;
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}
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public VertexDeclaration(params VertexElement[] elements)
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{
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this.elements = elements;
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for (int i = 0; i < this.elements.Length; i++)
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VertexStride += GetElementStride(this.elements[i].VertexElementFormat);
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}
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public VertexDeclaration(int vertexStride, params VertexElement[] elements)
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{
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this.elements = elements;
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VertexStride = vertexStride;
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}
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public VertexElement[] GetVertexElements()
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{
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if (elements != null)
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return elements.Clone() as VertexElement[];
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else
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return null;
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}
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public override void Dispose()
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{
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Dispose(true);
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}
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protected override void Dispose([MarshalAs(UnmanagedType.U1)] bool disposeManaged)
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{
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// Nothing to dispose
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}
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private int GetElementStride(VertexElementFormat format)
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{
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switch (format)
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{
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case VertexElementFormat.NormalizedShort2:
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case VertexElementFormat.Byte4:
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case VertexElementFormat.Color:
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case VertexElementFormat.HalfVector2:
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case VertexElementFormat.Short2:
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case VertexElementFormat.Single:
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return 4;
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case VertexElementFormat.HalfVector4:
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case VertexElementFormat.NormalizedShort4:
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case VertexElementFormat.Short4:
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case VertexElementFormat.Vector2:
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return 8;
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case VertexElementFormat.Vector3:
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return 12;
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case VertexElementFormat.Vector4:
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return 16;
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default:
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throw new ArgumentException("unknown VertexElementFormat size '" + format + "'");
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}
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}
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}
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}
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