public override void VisitMethodDeclaration(MethodDeclarationSyntax node)
{
string functionName = node.Identifier.ToFullString();
List <ParameterDefinition> parameters = new List <ParameterDefinition>();
foreach (ParameterSyntax ps in node.ParameterList.Parameters)
{
parameters.Add(ParameterDefinition.GetParameterDefinition(_compilation, ps));
}
TypeReference returnType = new TypeReference(GetModel(node).GetFullTypeName(node.ReturnType));
UInt3 computeGroupCounts = new UInt3();
bool isFragmentShader = false, isComputeShader = false;
bool isVertexShader = Utilities.GetMethodAttributes(node, "VertexShader").Any();
if (!isVertexShader)
{
isFragmentShader = Utilities.GetMethodAttributes(node, "FragmentShader").Any();
}
if (!isVertexShader && !isFragmentShader)
{
AttributeSyntax computeShaderAttr = Utilities.GetMethodAttributes(node, "ComputeShader").FirstOrDefault();
if (computeShaderAttr != null)
{
isComputeShader = true;
computeGroupCounts.X = GetAttributeArgumentUIntValue(computeShaderAttr, 0);
computeGroupCounts.Y = GetAttributeArgumentUIntValue(computeShaderAttr, 1);
computeGroupCounts.Z = GetAttributeArgumentUIntValue(computeShaderAttr, 2);
}
}
ShaderFunctionType type = isVertexShader
? ShaderFunctionType.VertexEntryPoint
: isFragmentShader
? ShaderFunctionType.FragmentEntryPoint
: isComputeShader
? ShaderFunctionType.ComputeEntryPoint
: ShaderFunctionType.Normal;
string nestedTypePrefix = Utilities.GetFullNestedTypePrefix(node, out bool nested);
ShaderFunction sf = new ShaderFunction(
nestedTypePrefix,
functionName,
returnType,
parameters.ToArray(),
type,
computeGroupCounts);
ShaderFunctionAndBlockSyntax sfab = new ShaderFunctionAndBlockSyntax(sf, node.Body);
foreach (LanguageBackend b in _backends)
{
b.AddFunction(_shaderSet.Name, sfab);
}
}
public ShaderFunction(
string declaringType,
string name,
TypeReference returnType,
ParameterDefinition[] parameters,
ShaderFunctionType type,
UInt3 computeGroupCounts)
{
DeclaringType = declaringType;
Name = name;
ReturnType = returnType;
Parameters = parameters;
Type = type;
ComputeGroupCounts = computeGroupCounts;
}
internal static ShaderFunctionAndMethodDeclarationSyntax GetShaderFunction(
MethodDeclarationSyntax node,
Compilation compilation,
bool generateOrderedFunctionList)
{
string functionName = node.Identifier.ToFullString();
List <ParameterDefinition> parameters = new List <ParameterDefinition>();
foreach (ParameterSyntax ps in node.ParameterList.Parameters)
{
parameters.Add(ParameterDefinition.GetParameterDefinition(compilation, ps));
}
SemanticModel semanticModel = compilation.GetSemanticModel(node.SyntaxTree);
TypeReference returnType = new TypeReference(semanticModel.GetFullTypeName(node.ReturnType));
UInt3 computeGroupCounts = new UInt3();
bool isFragmentShader = false, isComputeShader = false;
bool isVertexShader = GetMethodAttributes(node, "VertexShader").Any();
if (!isVertexShader)
{
isFragmentShader = GetMethodAttributes(node, "FragmentShader").Any();
}
if (!isVertexShader && !isFragmentShader)
{
AttributeSyntax computeShaderAttr = GetMethodAttributes(node, "ComputeShader").FirstOrDefault();
if (computeShaderAttr != null)
{
isComputeShader = true;
computeGroupCounts.X = GetAttributeArgumentUIntValue(computeShaderAttr, 0);
computeGroupCounts.Y = GetAttributeArgumentUIntValue(computeShaderAttr, 1);
computeGroupCounts.Z = GetAttributeArgumentUIntValue(computeShaderAttr, 2);
}
}
ShaderFunctionType type = isVertexShader
? ShaderFunctionType.VertexEntryPoint
: isFragmentShader
? ShaderFunctionType.FragmentEntryPoint
: isComputeShader
? ShaderFunctionType.ComputeEntryPoint
: ShaderFunctionType.Normal;
string nestedTypePrefix = GetFullNestedTypePrefix(node, out bool nested);
ShaderFunction sf = new ShaderFunction(
nestedTypePrefix,
functionName,
returnType,
parameters.ToArray(),
type,
computeGroupCounts);
ShaderFunctionAndMethodDeclarationSyntax[] orderedFunctionList;
if (type != ShaderFunctionType.Normal && generateOrderedFunctionList)
{
FunctionCallGraphDiscoverer fcgd = new FunctionCallGraphDiscoverer(
compilation,
new TypeAndMethodName {
TypeName = sf.DeclaringType, MethodName = sf.Name
});
fcgd.GenerateFullGraph();
orderedFunctionList = fcgd.GetOrderedCallList();
}
else
{
orderedFunctionList = new ShaderFunctionAndMethodDeclarationSyntax[0];
}
return(new ShaderFunctionAndMethodDeclarationSyntax(sf, node, orderedFunctionList));
}
internal static ShaderFunctionAndMethodDeclarationSyntax GetShaderFunction(
BaseMethodDeclarationSyntax node,
Compilation compilation,
bool generateOrderedFunctionList)
{
SemanticModel semanticModel = compilation.GetSemanticModel(node.SyntaxTree);
string functionName;
TypeReference returnTypeReference;
if (node is MethodDeclarationSyntax mds)
{
functionName = mds.Identifier.ToFullString();
returnTypeReference = new TypeReference(semanticModel.GetFullTypeName(mds.ReturnType), semanticModel.GetTypeInfo(mds.ReturnType).Type);
}
else if (node is ConstructorDeclarationSyntax cds)
{
functionName = ".ctor";
ITypeSymbol typeSymbol = semanticModel.GetDeclaredSymbol(cds).ContainingType;
returnTypeReference = new TypeReference(GetFullTypeName(typeSymbol, out _), typeSymbol);
}
else
{
throw new ArgumentOutOfRangeException(nameof(node), "Unsupported BaseMethodDeclarationSyntax type.");
}
UInt3 computeGroupCounts = new UInt3();
bool isFragmentShader = false, isComputeShader = false;
bool isVertexShader = GetMethodAttributes(node, "VertexShader").Any();
bool isGeometryShader = GetMethodAttributes(node, "GeometryShader").Any();
if (!isVertexShader)
{
isFragmentShader = GetMethodAttributes(node, "FragmentShader").Any();
}
if (!isVertexShader && !isFragmentShader && !isGeometryShader)
{
AttributeSyntax computeShaderAttr = GetMethodAttributes(node, "ComputeShader").FirstOrDefault();
if (computeShaderAttr != null)
{
isComputeShader = true;
computeGroupCounts.X = GetAttributeArgumentUIntValue(computeShaderAttr, 0);
computeGroupCounts.Y = GetAttributeArgumentUIntValue(computeShaderAttr, 1);
computeGroupCounts.Z = GetAttributeArgumentUIntValue(computeShaderAttr, 2);
}
}
ShaderFunctionType type = isVertexShader
? ShaderFunctionType.VertexEntryPoint
: isFragmentShader
? ShaderFunctionType.FragmentEntryPoint
: isComputeShader
? ShaderFunctionType.ComputeEntryPoint
: isGeometryShader
? ShaderFunctionType.GeometryEntryPoint
: ShaderFunctionType.Normal;
string nestedTypePrefix = GetFullNestedTypePrefix(node, out bool nested);
List <ParameterDefinition> parameters = new List <ParameterDefinition>();
foreach (ParameterSyntax ps in node.ParameterList.Parameters)
{
parameters.Add(ParameterDefinition.GetParameterDefinition(compilation, ps));
}
ShaderFunction sf = new ShaderFunction(
nestedTypePrefix,
functionName,
returnTypeReference,
parameters.ToArray(),
type,
computeGroupCounts);
if (isGeometryShader)
{
AttributeSyntax geometryShaderAttr = GetMethodAttributes(node, "GeometryShader").FirstOrDefault();
var geometryArgs = geometryShaderAttr.ArgumentList.Arguments;
if (geometryArgs.Count == 3)
{
sf.InputPrimitive = (PrimitiveType)Enum.ToObject(typeof(PrimitiveType), semanticModel.GetConstantValue(geometryArgs[0].Expression).Value);
sf.OutputPrimitive = (PrimitiveType)Enum.ToObject(typeof(PrimitiveType), semanticModel.GetConstantValue(geometryArgs[1].Expression).Value);
sf.MaxVertices = (int)semanticModel.GetConstantValue(geometryArgs[2].Expression).Value;
}
}
ShaderFunctionAndMethodDeclarationSyntax[] orderedFunctionList;
if (type != ShaderFunctionType.Normal && generateOrderedFunctionList)
{
FunctionCallGraphDiscoverer fcgd = new FunctionCallGraphDiscoverer(
compilation,
new TypeAndMethodName {
TypeName = sf.DeclaringType, MethodName = sf.Name
});
fcgd.GenerateFullGraph();
orderedFunctionList = fcgd.GetOrderedCallList();
}
else
{
orderedFunctionList = new ShaderFunctionAndMethodDeclarationSyntax[0];
}
return(new ShaderFunctionAndMethodDeclarationSyntax(sf, node, orderedFunctionList));
}
internal abstract string GetComputeGroupCountsDeclaration(UInt3 groupCounts);
internal override string GetComputeGroupCountsDeclaration(UInt3 groupCounts)
{
return($"[numthreads({groupCounts.X}, {groupCounts.Y}, {groupCounts.Z})]");
}
internal override string GetComputeGroupCountsDeclaration(UInt3 groupCounts)
{
return($"layout(local_size_x = {groupCounts.X}, local_size_y = {groupCounts.Y}, local_size_z = {groupCounts.Z}) in;");
}