public ShaderOp CreateConstantOp(ShaderType constantType, ShaderConstantLiteral constantLiteral)
{
var constantOpKey = new ConstantOpKey(constantLiteral);
var constantOp = mCurrentLibrary.FindConstant(constantOpKey);
if (constantOp == null)
{
constantOp = mCurrentLibrary.FindOrCreateConstant(constantOpKey);
// Handle bools specially (they're special ops in spirv)
if (constantType.mBaseType == OpType.Bool)
{
var boolVal = (bool)constantLiteral.mValue;
if (boolVal == true)
{
InitializeOp(constantOp, OpInstructionType.OpConstantTrue, constantType, null);
}
else
{
InitializeOp(constantOp, OpInstructionType.OpConstantFalse, constantType, null);
}
}
else
{
InitializeOp(constantOp, OpInstructionType.OpConstant, constantType, new List <IShaderIR> {
constantLiteral
});
}
}
return(constantOp);
}
public ShaderConstantLiteral CreateConstantLiteral <T>(ShaderType literalType, T value)
{
var constantOp = new ShaderConstantLiteral();
constantOp.mType = literalType;
constantOp.mValue = value;
constantOp = mCurrentLibrary.GetOrCreateConstantLiteral(constantOp);
return(constantOp);
}
//---------------------------------------------------------------Constant Literals
public ShaderConstantLiteral GetOrCreateConstantLiteral(ShaderConstantLiteral constantLiteral)
{
var key = new ConstantOpKey(constantLiteral);
var result = mConstantLiterals.GetValueOrDefault(key);
if (result == null)
{
result = constantLiteral;
mConstantLiterals.Add(key, result);
}
return(result);
}
void WriteConstantLiteral(ShaderConstantLiteral constantLiteral)
{
if (constantLiteral.mType.mBaseType == OpType.Int)
{
if (constantLiteral.mValue is int intValue)
{
mWriter.Write(intValue);
}
else if (constantLiteral.mValue is uint uintValue)
{
mWriter.Write(uintValue);
}
else
{
throw new Exception();
}
}
else
{
throw new Exception();
}
}
public ShaderConstantLiteral CreateConstantLiteral(ShaderType constantType, string value)
{
var constantOp = new ShaderConstantLiteral();
constantOp.mType = constantType;
switch (constantType.mBaseType)
{
case OpType.Bool:
{
constantOp.mValue = bool.Parse(value);
break;
}
case OpType.Int:
{
if (ShaderType.IsSignedInt(constantType))
{
constantOp.mValue = int.Parse(value);
}
else
{
constantOp.mValue = uint.Parse(value);
}
break;
}
case OpType.Float:
{
constantOp.mValue = float.Parse(value);
break;
}
}
mCurrentLibrary.GetOrCreateConstantLiteral(constantOp);
return(constantOp);
}
public void Visit(ShaderConstantLiteral constantLiteral)
{
Visit(constantLiteral.mType);
}
public ConstantOpKey(ShaderConstantLiteral constant)
{
mType = constant.mType;
mValue = constant.mValue;
Validate();
}
