private string CSharpToShaderTypeCore(string fullType, bool packed)
{
string mapped = packed
? MetalKnownTypes.GetPackedName(fullType)
: MetalKnownTypes.GetMappedName(fullType);
return(mapped
.Replace(".", "_")
.Replace("+", "_"));
}
private static string TranslateCore(string typeName, string methodName, InvocationParameterInfo[] parameters)
{
string target = parameters[0].Identifier;
StringBuilder swizzle = new StringBuilder();
foreach (char c in methodName)
{
swizzle.Append(char.ToLowerInvariant(c));
}
bool result = MetalKnownTypes.GetUnpackedType(parameters[0].FullTypeName, out string unpackedType);
Debug.Assert(result);
return($"{unpackedType}({target}).{swizzle.ToString()}");
}
protected void WriteStructure(StringBuilder sb, StructureDefinition sd)
{
sb.AppendLine($"struct {CSharpToShaderType(sd.Name)}");
sb.AppendLine("{");
StringBuilder fb = new StringBuilder();
uint attribute = 0;
uint colorTarget = 0;
foreach (FieldDefinition field in sd.Fields)
{
string typeName = CSharpToShaderType(field.Type);
if (field.SemanticType == SemanticType.None)
{
typeName = MetalKnownTypes.GetPackedName(typeName);
}
fb.Append(typeName);
fb.Append(' ');
fb.Append(CorrectIdentifier(field.Name.Trim()));
int arrayCount = field.ArrayElementCount;
if (arrayCount > 0)
{
fb.Append('['); fb.Append(arrayCount); fb.Append(']');
}
if (field.SemanticType == SemanticType.SystemPosition)
{
fb.Append($" [[ position ]]");
}
else if (field.SemanticType == SemanticType.ColorTarget)
{
fb.Append($" [[ color({colorTarget++}) ]]");
}
else if (field.SemanticType != SemanticType.None)
{
fb.Append($" [[ attribute({attribute++}) ]]");
}
fb.Append(';');
sb.Append(" ");
sb.AppendLine(fb.ToString());
fb.Clear();
}
sb.AppendLine("};");
sb.AppendLine();
}
protected override string CSharpToShaderTypeCore(string fullType)
{
return(MetalKnownTypes.GetMappedName(fullType)
.Replace(".", "_")
.Replace("+", "_"));
}