/// <summary>
/// Makes a string from the SourceRegister value. e.g -r10.xyzw
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
private string GetSourceToken(SourceRegister source)
{
// Use reflection to determine which Source values to use with the OpCode,
// return empty string for any unused source
var attribute = ( OpCodeAttributes )VectorOp.Attribute(typeof(OpCodeAttributes));
if ((!attribute.ParamA || source != Source0) && (!attribute.ParamB || source != Source1) &&
(!attribute.ParamC || source != Source2))
{
return(string.Empty);
}
switch (source.Type)
{
case SourceRegister.SourceType.Temporary:
return(source.NegationPrefix + RegisterToken + source.TempID + source.Swizzle.GetSuffix( ));
case SourceRegister.SourceType.Attribute:
return(source.NegationPrefix + AttributeToken + AttributerSource + source.Swizzle.GetSuffix( ));
case SourceRegister.SourceType.Constant:
return(source.NegationPrefix + ConstantToken + ConstantSource + source.Swizzle.GetSuffix( ));
default:
throw new DataException("Invalid " + nameof(source.Type));
}
}
public VertexProgramInstruction(byte[] data)
{
var dword0 = BitConverter.ToUInt32(data, 0);
var dword1 = BitConverter.ToUInt32(data, 4);
var dword2 = BitConverter.ToUInt32(data, 8);
var dword3 = BitConverter.ToUInt32(data, 12);
ScalarOp = ( ScalarOps )GetBits(dword1, ScalarOpCodeMask, ScalarOpCodeShift);
VectorOp = ( VectorOps )GetBits(dword1, VectorOpCodeMask, VectorOpCodeShift);
ConstantSource = GetBits(dword1, ConstantSourceMask, ConstantSourceShift);
AttributerSource = GetBits(dword1, AttributeSourceMask, AttributeSourceShift);
var src0Bits = GetSplitBits(dword1, dword2, Src0MsbMask, Src0MsbShift, Src0LsbMask, Src0LsbShift,
Src0LsbLength);
var src1Bits = GetBits(dword2, Src1Mask, Src1Shift);
var src2Bits = GetSplitBits(dword2, dword3, Src2MsbMask, Src2MsbShift, Src2LsbMask, Src2LsbShift,
Src2LsbLength);
Source0 = new SourceRegister(src0Bits);
Source1 = new SourceRegister(src1Bits);
Source2 = new SourceRegister(src2Bits);
DstTempWriteMask = new WriteMask(GetBits(dword3, Dst2WriteMaskMask, Dst2WriteMaskShift));
RegisterSource = GetBits(dword3, RegisterMask, RegisterShift);
DstScalarWriteMask = new WriteMask(GetBits(dword3, Dst1WriteMaskMask, Dst1WriteMaskShift));
DstVectorWriteMask = new WriteMask(GetBits(dword3, Dst0WriteMaskMask, Dst0WriteMaskShift));
ScalarResult = GetBits(dword3, ResultMask, ResultShift) == 1;
Destination = ( DestinationRegister )GetBits(dword3, Dst0Mask, Dst0Shift);
IndexConstant = GetBits(dword3, IndexConstantMask, IndexConstantShift);
LastInstruction = GetBits(dword3, LastMask, LastShift) == 1;
}
