public HlslWriter(HlslWriter writer)
: base(writer)
{
}
protected override void CompileInvocationExpression(InvocationExpressionSyntax expression)
{
var symbol = GetSymbol(expression.Expression);
if (symbol != null)
{
var special = symbol.GetAttribute("Special");
if (special != null)
{
var name = (Special)special.ConstructorArguments.First().Value;
switch (name)
{
case Special.rgba_hex:
// If the funciton has a special compilation, do that special compilation.
var hex_literal = expression.ArgumentList.Arguments[0].Expression as LiteralExpressionSyntax;
var float_literal = expression.ArgumentList.Arguments[1].Expression as LiteralExpressionSyntax;
//Write("float4({0}, {1})", HexToVec4(hex_literal.ToString()), float_literal.ToString());
Write("float4(");
Write(HexToVec4(hex_literal.ToString()));
Write(", ");
CompileLiteralExpression(float_literal);
Write(")");
break;
case Special.rgb_hex:
// If the funciton has a special compilation, do that special compilation.
var _hex_literal = expression.ArgumentList.Arguments[0].Expression as LiteralExpressionSyntax;
Write("float4({0}, 1.0)", HexToVec4(_hex_literal.ToString()));
break;
}
}
else if (TranslationLookup.SymbolMap.ContainsKey(symbol))
{
// If the function has a tranlsation, use that tranlsation
var translation_info = TranslationLookup.SymbolMap[symbol];
Write(translation_info.Translation);
Write("(");
CompileArgumentList(expression.ArgumentList, false);
Write(")");
}
else
{
// Otherwise compile the function and note that we are using it.
var writer = new HlslWriter(this);
var result = writer.CompileMethod(symbol);
ReferencedMethods.AddUnique(SymbolCompilation[symbol].ReferencedMethods);
ReferencedMethods.AddUnique(symbol);
ReferencedForeignVars.AddUnique(writer.ReferencedForeignVars);
CompileExpression(expression.Expression);
Write("(");
CompileArgumentList(expression.ArgumentList, result.UsesSampler);
Write(")");
}
}
else
{
Write("ERROR(Unknown function : {0})", expression);
}
}
