VertexDeclarationFactory.cs

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namespace Microsoft.Xna.Framework.Graphics;
 
internal static class VertexDeclarationFactory<T> where T : struct, IVertexType
{
    private static VertexDeclaration cachedDeclaration;
 
    public static VertexDeclaration VertexDeclaration
    {
        get
        {
            if (cachedDeclaration == null)
            {
                cachedDeclaration = VertexDeclaration.FromType(typeof(T));
            }
            return cachedDeclaration;
        }
    }
}