private void LoadConstantOutputs(ShaderModel shader)
{
IList <ConstantDeclaration> constantTable = shader.ParseConstantTable();
_activeOutputs = new Dictionary <RegisterComponentKey, HlslTreeNode>();
_samplers = new Dictionary <RegisterKey, HlslTreeNode>();
foreach (var constant in constantTable)
{
if (constant.RegisterSet == RegisterSet.Sampler)
{
var registerKey = new RegisterKey(RegisterType.Sampler, constant.RegisterIndex);
var destinationKey = new RegisterComponentKey(registerKey, 0);
int samplerTextureDimension;
switch (constant.ParameterType)
{
case ParameterType.Sampler1D:
samplerTextureDimension = 1;
break;
case ParameterType.Sampler2D:
samplerTextureDimension = 2;
break;
case ParameterType.Sampler3D:
case ParameterType.SamplerCube:
samplerTextureDimension = 3;
break;
default:
throw new InvalidOperationException();
}
var shaderInput = new RegisterInputNode(destinationKey, samplerTextureDimension);
_samplers.Add(registerKey, shaderInput);
}
else
{
for (int r = 0; r < constant.RegisterCount; r++)
{
if (constant.ParameterType != ParameterType.Float)
{
throw new NotImplementedException();
}
var registerKey = new RegisterKey(RegisterType.Const, constant.RegisterIndex + r);
for (int i = 0; i < 4; i++)
{
var destinationKey = new RegisterComponentKey(registerKey, i);
var shaderInput = new RegisterInputNode(destinationKey);
_activeOutputs.Add(destinationKey, shaderInput);
}
}
}
}
}
private HlslTreeNode CreateInstructionTree(Instruction instruction, RegisterComponentKey destinationKey)
{
int componentIndex = destinationKey.ComponentIndex;
switch (instruction.Opcode)
{
case Opcode.Dcl:
{
var shaderInput = new RegisterInputNode(destinationKey);
return(shaderInput);
}
case Opcode.Def:
{
var constant = new ConstantNode(instruction.GetParamSingle(componentIndex + 1));
return(constant);
}
case Opcode.DefI:
{
var constant = new ConstantNode(instruction.GetParamInt(componentIndex + 1));
return(constant);
}
case Opcode.DefB:
{
throw new NotImplementedException();
}
case Opcode.Abs:
case Opcode.Add:
case Opcode.Cmp:
case Opcode.Frc:
case Opcode.Lrp:
case Opcode.Mad:
case Opcode.Max:
case Opcode.Min:
case Opcode.Mov:
case Opcode.Mul:
case Opcode.Pow:
case Opcode.Rcp:
case Opcode.Rsq:
case Opcode.SinCos:
case Opcode.Sge:
case Opcode.Slt:
{
HlslTreeNode[] inputs = GetInputs(instruction, componentIndex);
switch (instruction.Opcode)
{
case Opcode.Abs:
return(new AbsoluteOperation(inputs[0]));
case Opcode.Cmp:
return(new CompareOperation(inputs[0], inputs[1], inputs[2]));
case Opcode.Frc:
return(new FractionalOperation(inputs[0]));
case Opcode.Lrp:
return(new LinearInterpolateOperation(inputs[0], inputs[1], inputs[2]));
case Opcode.Max:
return(new MaximumOperation(inputs[0], inputs[1]));
case Opcode.Min:
return(new MinimumOperation(inputs[0], inputs[1]));
case Opcode.Mov:
return(new MoveOperation(inputs[0]));
case Opcode.Add:
return(new AddOperation(inputs[0], inputs[1]));
case Opcode.Mul:
return(new MultiplyOperation(inputs[0], inputs[1]));
case Opcode.Mad:
return(new MultiplyAddOperation(inputs[0], inputs[1], inputs[2]));
case Opcode.Pow:
return(new PowerOperation(inputs[0], inputs[1]));
case Opcode.Rcp:
return(new ReciprocalOperation(inputs[0]));
case Opcode.Rsq:
return(new ReciprocalSquareRootOperation(inputs[0]));
case Opcode.SinCos:
if (componentIndex == 0)
{
return(new CosineOperation(inputs[0]));
}
return(new SineOperation(inputs[0]));
case Opcode.Sge:
return(new SignGreaterOrEqualOperation(inputs[0], inputs[1]));
case Opcode.Slt:
return(new SignLessOperation(inputs[0], inputs[1]));
default:
throw new NotImplementedException();
}
}
case Opcode.Tex:
case Opcode.TexLDL:
return(CreateTextureLoadOutputNode(instruction, componentIndex));
case Opcode.DP2Add:
return(CreateDotProduct2AddNode(instruction));
case Opcode.Dp3:
case Opcode.Dp4:
return(CreateDotProductNode(instruction));
case Opcode.Nrm:
return(CreateNormalizeOutputNode(instruction, componentIndex));
default:
throw new NotImplementedException($"{instruction.Opcode} not implemented");
}
}
