Root/
#region License/* FNA - XNA4 Reimplementation for Desktop Platforms * Copyright 2009-2016 Ethan Lee and the MonoGame Team * * Released under the Microsoft Public License. * See LICENSE for details. */#endregion#region Using Statementsusing Microsoft.Xna.Framework.Graphics;#endregionnamespace Microsoft.Xna.Framework.Content{ internal class VertexDeclarationReader : ContentTypeReader<VertexDeclaration> { #region Protected Read Method protected internal override VertexDeclaration Read( ContentReader reader, VertexDeclaration existingInstance ) { int vertexStride = reader.ReadInt32(); int elementCount = reader.ReadInt32(); VertexElement[] elements = new VertexElement[elementCount]; for (int i = 0; i < elementCount; i += 1) { int offset = reader.ReadInt32(); VertexElementFormat elementFormat = (VertexElementFormat) reader.ReadInt32(); VertexElementUsage elementUsage = (VertexElementUsage) reader.ReadInt32(); int usageIndex = reader.ReadInt32(); elements[i] = new VertexElement( offset, elementFormat, elementUsage, usageIndex ); } /* TODO: This process generates alot of duplicate VertexDeclarations * which in turn complicates other systems trying to share GPU resources * like DX11 vertex input layouts. * * We should consider caching vertex declarations here and returning * previously created declarations when they are in our cache. */ return new VertexDeclaration(vertexStride, elements); } #endregion }} |
