internal ModelVertexAttribute(ModelVertexDeclaration declaration, AssetLoader loader, int index)
: base(declaration, index, loader)
{
var reader = loader.Reader;
Declaration = declaration;
reader.RequireZeroes(4);
Offset = reader.ReadInt32();
Format = (ModelVertexFormat)reader.ReadInt32();
Usage = (ModelVertexUsage)reader.ReadInt32();
UsageIndex = reader.ReadInt32();
}