71 lines
3.3 KiB
C#
71 lines
3.3 KiB
C#
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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namespace SharpDX.Direct3D9
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{
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/// <summary>
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/// Helper methods to create special <see cref="VertexFormat"/>.
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/// </summary>
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public class VertexFormatHelper
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{
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/// <summary>
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/// Calculates a specific TEXCOORDSIZEN <see cref="VertexFormat"/>.
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/// </summary>
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/// <param name="size">The size of the texcoord. The value must be in the range [1,4] (Number of floating point values)</param>
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/// <param name="coordIndex">Index of the coord.</param>
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/// <returns>The <see cref="VertexFormat"/></returns>
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/// <exception cref="System.ArgumentException">If size is not in the range [1,4]</exception>
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/// <remarks>
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/// </remarks>
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public static VertexFormat TexCoordSize(int size, int coordIndex)
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{
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//// Macros to set texture coordinate format bits in the FVF id
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//#define D3DFVF_TEXTUREFORMAT2 0 // Two floating point values
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//#define D3DFVF_TEXTUREFORMAT1 3 // One floating point value
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//#define D3DFVF_TEXTUREFORMAT3 1 // Three floating point values
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//#define D3DFVF_TEXTUREFORMAT4 2 // Four floating point values
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//#define D3DFVF_TEXCOORDSIZE3(CoordIndex) (D3DFVF_TEXTUREFORMAT3 << (CoordIndex*2 + 16))
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//#define D3DFVF_TEXCOORDSIZE2(CoordIndex) (D3DFVF_TEXTUREFORMAT2)
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//#define D3DFVF_TEXCOORDSIZE4(CoordIndex) (D3DFVF_TEXTUREFORMAT4 << (CoordIndex*2 + 16))
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//#define D3DFVF_TEXCOORDSIZE1(CoordIndex) (D3DFVF_TEXTUREFORMAT1 << (CoordIndex*2 + 16))
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int textureFormat;
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switch (size)
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{
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case 1:
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textureFormat = 3;
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break;
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case 2:
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textureFormat = 0;
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break;
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case 3:
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textureFormat = 1;
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break;
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case 4:
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textureFormat = 2;
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break;
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default:
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throw new ArgumentException("Size must be in the range [1,4]", "size");
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}
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return (VertexFormat)(textureFormat == 0 ? textureFormat : (textureFormat << (coordIndex * 2 + 16)));
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}
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}
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}
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