private static Dictionary <RegisterKey, HlslTreeNode> GetConstantOutputs(ShaderModel shader)
{
var constantTable = shader.ParseConstantTable();
var constantOutputs = new Dictionary <RegisterKey, HlslTreeNode>();
foreach (var constant in constantTable)
{
for (int i = 0; i < 4; i++)
{
var destinationKey = new RegisterKey()
{
RegisterNumber = constant.RegisterIndex,
RegisterType = RegisterType.Const,
ComponentIndex = i
};
var shaderInput = new HlslShaderInput()
{
InputDecl = destinationKey,
ComponentIndex = i
};
constantOutputs.Add(destinationKey, shaderInput);
}
}
return(constantOutputs);
}
private HlslTreeNode CreateInstructionTree(Instruction instruction, RegisterKey destinationKey)
{
int componentIndex = destinationKey.ComponentIndex;
switch (instruction.Opcode)
{
case Opcode.Dcl:
{
var shaderInput = new HlslShaderInput()
{
InputDecl = destinationKey,
ComponentIndex = componentIndex
};
return(shaderInput);
}
case Opcode.Def:
{
var constant = new HlslConstant(instruction.GetParamSingle(componentIndex + 1));
return(constant);
}
case Opcode.Abs:
case Opcode.Add:
case Opcode.Mad:
case Opcode.Mov:
case Opcode.Mul:
{
int numInputs;
switch (instruction.Opcode)
{
case Opcode.Abs:
case Opcode.Mov:
numInputs = 1;
break;
case Opcode.Add:
case Opcode.Mul:
numInputs = 2;
break;
case Opcode.Mad:
numInputs = 3;
break;
default:
throw new NotImplementedException();
}
var operation = new HlslOperation(instruction.Opcode);
for (int j = 0; j < numInputs; j++)
{
var modifier = instruction.GetSourceModifier(j + 1);
if (modifier != SourceModifier.None)
{
// TODO
}
var inputKey = GetParamRegisterKey(instruction, j + 1, componentIndex);
var input = _activeOutputs[inputKey];
operation.AddChild(input);
}
return(operation);
}
default:
throw new NotImplementedException();
}
}