public static Number4 ApplyOperandSelectionMode(Number4 value, Operand operand)
{
switch (operand.SelectionMode)
{
case Operand4ComponentSelectionMode.Swizzle:
case Operand4ComponentSelectionMode.Select1:
return Number4.Swizzle(value, operand.Swizzles);
default:
throw new ArgumentOutOfRangeException();
}
}
private static string ApplyOperandSelectionMode(string register, Operand operand, bool forUseInArrayIndex)
{
switch (operand.SelectionMode)
{
case Operand4ComponentSelectionMode.Select1:
if (forUseInArrayIndex)
return string.Format("{0}.Int{1}", register, (int) operand.Swizzles[0]);
goto case Operand4ComponentSelectionMode.Swizzle;
case Operand4ComponentSelectionMode.Swizzle:
if (operand.Swizzles[0] == Operand4ComponentName.X
&& operand.Swizzles[1] == Operand4ComponentName.Y
&& operand.Swizzles[2] == Operand4ComponentName.Z
&& operand.Swizzles[3] == Operand4ComponentName.W)
return register;
return string.Format("{0}.{1}{2}{3}{4}", register,
GetOperand4ComponentName(operand.Swizzles[0]),
GetOperand4ComponentName(operand.Swizzles[1]).ToLower(),
GetOperand4ComponentName(operand.Swizzles[2]).ToLower(),
GetOperand4ComponentName(operand.Swizzles[3]).ToLower());
default :
throw new ArgumentOutOfRangeException();
}
}
private static string GenerateGetOperandValue(Operand operand, NumberType numberType,
string contextName = "context", bool forUseInArrayIndex = false)
{
switch (operand.OperandType)
{
case OperandType.Immediate32 :
case OperandType.Immediate64:
Number4 immediateValues;
switch (operand.NumComponents)
{
case 1:
immediateValues = operand.ImmediateValues.Xxxx;
break;
case 4:
immediateValues = operand.ImmediateValues;
break;
default:
throw new NotImplementedException();
}
var value = OperandUtility.ApplyOperandModifier(immediateValues, numberType, operand.Modifier);
return string.Format("new Number4({0}f, {1}f, {2}f, {3}f)",
value.Float0, value.Float1, value.Float2, value.Float3);
case OperandType.ConstantBuffer:
case OperandType.IndexableTemp:
case OperandType.Input:
case OperandType.Temp:
var swizzled = ApplyOperandSelectionMode(GetRegister(operand, contextName), operand, forUseInArrayIndex);
switch (operand.Modifier)
{
case OperandModifier.None:
return swizzled;
case OperandModifier.Neg:
return string.Format("Number4.Negate{0}({1})", numberType, swizzled);
case OperandModifier.Abs:
throw new NotImplementedException();
case OperandModifier.AbsNeg:
throw new NotImplementedException();
default :
throw new ArgumentOutOfRangeException();
}
default:
throw new ArgumentException("Unsupported operand type: " + operand.OperandType);
}
}
private static string GetRegisterIndex(Operand operand)
{
switch (operand.IndexDimension)
{
case OperandIndexDimension._1D:
// Only geometry shaders use 2D input values, but we always need to
// use 2D indices because we use a 2D input array.
if (operand.OperandType == OperandType.Input)
return string.Format("[0][{0}]",
GetRegisterIndex(operand.Indices[0]));
return string.Format("[{0}]",
GetRegisterIndex(operand.Indices[0]));
case OperandIndexDimension._2D:
return string.Format("[{0}][{1}]",
GetRegisterIndex(operand.Indices[0]),
GetRegisterIndex(operand.Indices[1]));
default:
throw new ArgumentOutOfRangeException();
}
}
private static string GetRegister(Operand operand, string contextName = "context")
{
if (operand.OperandType == OperandType.ConstantBuffer)
return string.Format("virtualMachine.{0}{1}",
GetRegisterName(operand.OperandType),
GetRegisterIndex(operand));
return string.Format("{0}.{1}{2}", contextName,
GetRegisterName(operand.OperandType),
GetRegisterIndex(operand));
}
private static void GenerateSetRegisterValueScalar(StringBuilder sb, Operand operand)
{
var register = GetRegister(operand);
if (operand.ComponentMask.HasFlag(ComponentMask.X))
sb.AppendLineIndent(2, " {0}.Number0 = result;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.Y))
sb.AppendLineIndent(2, " {0}.Number1 = result;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.Z))
sb.AppendLineIndent(2, " {0}.Number2 = result;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.W))
sb.AppendLineIndent(2, " {0}.Number3 = result;", register);
}
private static void GenerateSetRegisterValue(StringBuilder sb, Operand operand, string contextName = "context")
{
var register = GetRegister(operand, contextName);
if (operand.ComponentMask.HasFlag(ComponentMask.X)
&& operand.ComponentMask.HasFlag(ComponentMask.Y)
&& operand.ComponentMask.HasFlag(ComponentMask.Z)
&& operand.ComponentMask.HasFlag(ComponentMask.W))
{
sb.AppendLineIndent(2, " {0} = result;", register);
return;
}
if (operand.ComponentMask.HasFlag(ComponentMask.X))
sb.AppendLineIndent(2, " {0}.Number0 = result.Number0;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.Y))
sb.AppendLineIndent(2, " {0}.Number1 = result.Number1;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.Z))
sb.AppendLineIndent(2, " {0}.Number2 = result.Number2;", register);
if (operand.ComponentMask.HasFlag(ComponentMask.W))
sb.AppendLineIndent(2, " {0}.Number3 = result.Number3;", register);
}
private static void SetRegisterValue(ExecutionContext context, Operand operand, Number4 value)
{
Number4[] register;
int index;
GetRegister(context, operand, out register, out index);
register[index].WriteMaskedValue(value, operand.ComponentMask);
}
private static RegisterIndex GetRegisterIndex(ExecutionContext context, Operand operand)
{
var result = new RegisterIndex();
switch (operand.IndexDimension)
{
case OperandIndexDimension._1D:
result.Index1D = EvaluateOperandIndex(context, operand.Indices[0]);
break;
case OperandIndexDimension._2D:
result.Index2D_0 = EvaluateOperandIndex(context, operand.Indices[0]);
result.Index2D_1 = EvaluateOperandIndex(context, operand.Indices[1]);
break;
}
return result;
}
/// <summary>
/// Gets potentially-swizzled value for use on RHS of an operation.
/// </summary>
private static Number4 GetOperandValue(ExecutionContext context, Operand operand, NumberType numberType)
{
switch (operand.OperandType)
{
case OperandType.Immediate32:
case OperandType.Immediate64:
Number4 value;
switch (operand.NumComponents)
{
case 1 :
value = operand.ImmediateValues.Xxxx;
break;
case 4 :
value = operand.ImmediateValues;
break;
default :
throw new NotImplementedException();
}
return OperandUtility.ApplyOperandModifier(value, numberType, operand.Modifier);
case OperandType.ConstantBuffer:
case OperandType.IndexableTemp:
case OperandType.Input:
case OperandType.Temp:
Number4[] register;
int index;
GetRegister(context, operand, out register, out index);
var swizzledNumber = OperandUtility.ApplyOperandSelectionMode(register[index], operand);
return OperandUtility.ApplyOperandModifier(swizzledNumber, numberType, operand.Modifier);
default:
throw new ArgumentException("Unsupported operand type: " + operand.OperandType);
}
}
private static void GetRegister(ExecutionContext context, Operand operand, out Number4[] register, out int index)
{
var registerIndex = GetRegisterIndex(context, operand);
context.GetRegister(operand.OperandType, registerIndex, out register, out index);
}
public static Operand Parse(BytecodeReader reader, OpcodeType parentType)
{
uint token0 = reader.ReadUInt32();
if (token0 == 0)
return null;
var operand = new Operand(parentType);
var numComponents = token0.DecodeValue<OperandNumComponents>(0, 1);
switch (numComponents)
{
case OperandNumComponents.Zero:
{
operand.NumComponents = 0;
break;
}
case OperandNumComponents.One:
{
operand.NumComponents = 1;
break;
}
case OperandNumComponents.Four:
{
operand.NumComponents = 4;
operand.SelectionMode = token0.DecodeValue<Operand4ComponentSelectionMode>(2, 3);
switch (operand.SelectionMode)
{
case Operand4ComponentSelectionMode.Mask:
{
operand.ComponentMask = token0.DecodeValue<ComponentMask>(4, 7);
break;
}
case Operand4ComponentSelectionMode.Swizzle:
{
var swizzle = token0.DecodeValue(4, 11);
Func<uint, byte, Operand4ComponentName> swizzleDecoder = (s, i) =>
(Operand4ComponentName) ((s >> (i * 2)) & 3);
operand.Swizzles[0] = swizzleDecoder(swizzle, 0);
operand.Swizzles[1] = swizzleDecoder(swizzle, 1);
operand.Swizzles[2] = swizzleDecoder(swizzle, 2);
operand.Swizzles[3] = swizzleDecoder(swizzle, 3);
break;
}
case Operand4ComponentSelectionMode.Select1:
{
var swizzle = token0.DecodeValue<Operand4ComponentName>(4, 5);
operand.Swizzles[0] = operand.Swizzles[1] = operand.Swizzles[2] = operand.Swizzles[3] = swizzle;
break;
}
default:
{
throw new ParseException("Unrecognized selection method: " + operand.SelectionMode);
}
}
break;
}
case OperandNumComponents.N:
{
throw new ParseException("OperandNumComponents.N is not currently supported.");
}
}
operand.OperandType = token0.DecodeValue<OperandType>(12, 19);
operand.IndexDimension = token0.DecodeValue<OperandIndexDimension>(20, 21);
operand.IsExtended = token0.DecodeValue(31, 31) == 1;
if (operand.IsExtended)
ReadExtendedOperand(operand, reader);
Func<uint, byte, OperandIndexRepresentation> indexRepresentationDecoder = (t, i) =>
(OperandIndexRepresentation) t.DecodeValue((byte) (22 + (i * 3)), (byte) (22 + (i * 3) + 2));
for (byte i = 0; i < (byte) operand.IndexDimension; i++)
{
operand.Indices[i] = new OperandIndex();
var indexRepresentation = indexRepresentationDecoder(token0, i);
operand.Indices[i].Representation = indexRepresentation;
switch (indexRepresentation)
{
case OperandIndexRepresentation.Immediate32:
operand.Indices[i].Value = reader.ReadUInt32();
break;
case OperandIndexRepresentation.Immediate64:
operand.Indices[i].Value = reader.ReadUInt64();
goto default;
case OperandIndexRepresentation.Relative:
operand.Indices[i].Register = Parse(reader, parentType);
break;
case OperandIndexRepresentation.Immediate32PlusRelative:
operand.Indices[i].Value = reader.ReadUInt32();
goto case OperandIndexRepresentation.Relative;
case OperandIndexRepresentation.Immediate64PlusRelative:
operand.Indices[i].Value = reader.ReadUInt64();
goto case OperandIndexRepresentation.Relative;
default:
throw new ParseException("Unrecognised index representation: " + indexRepresentation);
}
}
var numberType = parentType.GetNumberType();
switch (operand.OperandType)
{
case OperandType.Immediate32:
{
var immediateValues = new Number4();
for (var i = 0; i < operand.NumComponents; i++)
immediateValues.SetNumber(i, Number.Parse(reader));
operand.ImmediateValues = immediateValues;
break;
}
case OperandType.Immediate64:
{
var immediateValues = new Number4();
for (var i = 0; i < operand.NumComponents; i++)
immediateValues.SetDouble(i, reader.ReadDouble());
operand.ImmediateValues = immediateValues;
break;
}
}
return operand;
}
/// <summary>
/// Extended Instruction Operand Format (OperandToken1)
///
/// If bit31 of an operand token is set, the
/// operand has additional data in a second DWORD
/// directly following OperandToken0. Other tokens
/// expected for the operand, such as immmediate
/// values or relative address operands (full
/// operands in themselves) always follow
/// OperandToken0 AND OperandToken1..n (extended
/// operand tokens, if present).
///
/// [05:00] D3D10_SB_EXTENDED_OPERAND_TYPE
/// [30:06] if([05:00] == D3D10_SB_EXTENDED_OPERAND_MODIFIER)
/// {
/// [13:06] D3D10_SB_OPERAND_MODIFIER
/// [30:14] Ignored, 0.
/// }
/// else
/// {
/// [30:06] Ignored, 0.
/// }
/// [31] 0 normally. 1 if second order extended operand definition,
/// meaning next DWORD contains yet ANOTHER extended operand
/// description. Currently no second order extensions defined.
/// This would be useful if a particular extended operand does
/// not have enough space to store the required information in
/// a single token and so is extended further.
/// </summary>
private static void ReadExtendedOperand(Operand operand, BytecodeReader reader)
{
uint token1 = reader.ReadUInt32();
switch (token1.DecodeValue<ExtendedOperandType>(0, 5))
{
case ExtendedOperandType.Modifier:
operand.Modifier = token1.DecodeValue<OperandModifier>(6, 13);
break;
}
}