public static VertexConverter CreteConverter(VertexDeclarationTypes type)
{
switch (type)
{
case VertexDeclarationTypes.Position:
return(new VertexConverterPosition());
case VertexDeclarationTypes.Normal:
return(new VertexConverterNormal());
case VertexDeclarationTypes.Tangent:
return(new VertexConverterTangent());
case VertexDeclarationTypes.BiTangent:
return(new VertexConverterBiTangent());
case VertexDeclarationTypes.VertexColor:
return(new VertexConverterColor());
case VertexDeclarationTypes.TexturePosition2D:
return(new VertexConverterTexturePosition2D());
case VertexDeclarationTypes.MeshIndex:
return(new VertexConverterMeshIndex());
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Reads the data-block from a stream.
/// </summary>
public override void Read(ResourceDataReader reader, params object[] parameters)
{
// read structure data
this.Flags = (VertexDeclarationFlags)reader.ReadUInt16();
this.Unknown_2h = reader.ReadUInt16();
this.Stride = reader.ReadUInt16();
this.Unknown_6h = reader.ReadByte();
this.ComponentsCount = reader.ReadByte();
this.Types = (VertexDeclarationTypes)reader.ReadUInt64();
}
public static InputElement[] GetLayout(VertexType componentsFlags, VertexDeclarationTypes componentsTypes = VertexDeclarationTypes.Types1)
{
List <InputElement> inputElements = new List <InputElement>();
var types = (ulong)componentsTypes;
var flags = (uint)componentsFlags;
var offset = 0;
for (int k = 0; k < 16; k++)
{
if (((flags >> k) & 0x1) == 1)
{
var componentType = (VertexComponentType)((types >> k * 4) & 0x0000000F);
if (componentType == VertexComponentType.Nothing)
{
continue; // should never hit this
}
var componentTypeSize = GetVertexComponentTypeSizeInBytes(componentType);
var format = GetDXGIFormat(componentType);
if (componentTypeSize == 0 || format == Format.Unknown)
{
continue;
}
int index = inputElements.Where(e => e.SemanticName.Equals(Semantics[k])).Count();
inputElements.Add(new InputElement(Semantics[k], index, format, offset, 0));
offset += componentTypeSize;
}
}
return(inputElements.ToArray());
}
