public static SignatureParameterDescription Parse(BytecodeReader reader, BytecodeReader parameterReader,
ChunkType chunkType, SignatureElementSize size)
{
uint stream = 0;
if (size == SignatureElementSize._7 || size == SignatureElementSize._8)
{
stream = parameterReader.ReadUInt32();
}
uint nameOffset = parameterReader.ReadUInt32();
var nameReader = reader.CopyAtOffset((int)nameOffset);
var result = new SignatureParameterDescription
{
SemanticName = nameReader.ReadString(),
SemanticIndex = parameterReader.ReadUInt32(),
SystemValueType = (Name)parameterReader.ReadUInt32(),
ComponentType = (RegisterComponentType)parameterReader.ReadUInt32(),
Register = parameterReader.ReadUInt32(),
Stream = stream,
};
uint mask = parameterReader.ReadUInt32();
result.Mask = mask.DecodeValue <ComponentMask>(0, 7);
result.ReadWriteMask = mask.DecodeValue <ComponentMask>(8, 15);
if (size == SignatureElementSize._8)
{
MinPrecision minPrecision = (MinPrecision)parameterReader.ReadUInt32();
result.MinPrecision = minPrecision;
}
// This is my guesswork, but it works so far...
if (chunkType == ChunkType.Osg5 ||
chunkType == ChunkType.Osgn ||
chunkType == ChunkType.Osg1)
{
result.ReadWriteMask = (ComponentMask)(ComponentMask.All - result.ReadWriteMask);
}
return(result);
}
public static InputOutputSignatureChunk Parse(BytecodeReader reader, ChunkType chunkType)
{
InputOutputSignatureChunk result;
switch (chunkType)
{
case ChunkType.Isgn:
case ChunkType.Isg1:
result = new InputSignatureChunk();
break;
case ChunkType.Osgn:
case ChunkType.Osg1:
case ChunkType.Osg5:
result = new OutputSignatureChunk();
break;
case ChunkType.Pcsg:
case ChunkType.Psg1:
result = new PatchConstantSignatureChunk();
break;
default:
throw new ArgumentOutOfRangeException("chunkType", "Unrecognised chunk type: " + chunkType);
}
var chunkReader = reader.CopyAtCurrentPosition();
var elementCount = chunkReader.ReadUInt32();
var uniqueKey = chunkReader.ReadUInt32();
SignatureElementSize elementSize;
switch (chunkType)
{
case ChunkType.Isgn:
case ChunkType.Osgn:
case ChunkType.Pcsg:
elementSize = SignatureElementSize._6;
break;
case ChunkType.Osg5:
elementSize = SignatureElementSize._7;
break;
case ChunkType.Osg1:
case ChunkType.Isg1:
case ChunkType.Psg1:
elementSize = SignatureElementSize._8;
break;
default:
throw new ArgumentOutOfRangeException("chunkType", "Unrecognised chunk type: " + chunkType);
}
for (int i = 0; i < elementCount; i++)
{
result.Parameters.Add(SignatureParameterDescription.Parse(reader, chunkReader, chunkType, elementSize));
}
return(result);
}