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));
}
protected override string GenerateFullTextCore(string setName, ShaderFunction function)
{
BackendContext context = GetContext(setName);
StringBuilder sb = new StringBuilder();
ShaderFunctionAndBlockSyntax entryPoint = context.Functions.SingleOrDefault(
sfabs => sfabs.Function.Name == function.Name);
if (entryPoint == null)
{
throw new ShaderGenerationException("Couldn't find given function: " + function.Name);
}
ValidateRequiredSemantics(setName, entryPoint.Function, function.Type);
StructureDefinition input = GetRequiredStructureType(setName, entryPoint.Function.Parameters[0].Type);
WriteVersionHeader(sb);
StructureDefinition[] orderedStructures
= StructureDependencyGraph.GetOrderedStructureList(Compilation, context.Structures);
foreach (StructureDefinition sd in orderedStructures)
{
WriteStructure(sb, sd);
}
foreach (ResourceDefinition rd in context.Resources)
{
switch (rd.ResourceKind)
{
case ShaderResourceKind.Uniform:
WriteUniform(sb, rd);
break;
case ShaderResourceKind.Texture2D:
WriteTexture2D(sb, rd);
break;
case ShaderResourceKind.TextureCube:
WriteTextureCube(sb, rd);
break;
case ShaderResourceKind.Sampler:
WriteSampler(sb, rd);
break;
default: throw new ShaderGenerationException("Illegal resource kind: " + rd.ResourceKind);
}
}
FunctionCallGraphDiscoverer fcgd = new FunctionCallGraphDiscoverer(
Compilation,
new TypeAndMethodName {
TypeName = function.DeclaringType, MethodName = function.Name
});
fcgd.GenerateFullGraph();
TypeAndMethodName[] orderedFunctionList = fcgd.GetOrderedCallList();
foreach (TypeAndMethodName name in orderedFunctionList)
{
ShaderFunctionAndBlockSyntax f = context.Functions.Single(
sfabs => sfabs.Function.DeclaringType == name.TypeName && sfabs.Function.Name == name.MethodName);
if (!f.Function.IsEntryPoint)
{
sb.AppendLine(new ShaderMethodVisitor(Compilation, setName, f.Function, this).VisitFunction(f.Block));
}
}
string result = new ShaderMethodVisitor(Compilation, setName, entryPoint.Function, this)
.VisitFunction(entryPoint.Block);
sb.AppendLine(result);
WriteMainFunction(setName, sb, entryPoint.Function);
return(sb.ToString());
}
protected override string GenerateFullTextCore(string setName, ShaderFunction function)
{
Debug.Assert(function.IsEntryPoint);
StringBuilder sb = new StringBuilder();
BackendContext setContext = GetContext(setName);
ShaderFunctionAndBlockSyntax entryPoint = setContext.Functions.SingleOrDefault(
sfabs => sfabs.Function.Name == function.Name);
if (entryPoint == null)
{
throw new ShaderGenerationException("Couldn't find given function: " + function.Name);
}
ValidateRequiredSemantics(setName, entryPoint.Function, function.Type);
StructureDefinition[] orderedStructures
= StructureDependencyGraph.GetOrderedStructureList(Compilation, setContext.Structures);
foreach (StructureDefinition sd in orderedStructures)
{
WriteStructure(sb, sd);
}
FunctionCallGraphDiscoverer fcgd = new FunctionCallGraphDiscoverer(
Compilation,
new TypeAndMethodName {
TypeName = function.DeclaringType, MethodName = function.Name
});
fcgd.GenerateFullGraph();
TypeAndMethodName[] orderedFunctionList = fcgd.GetOrderedCallList();
List <ResourceDefinition[]> resourcesBySet = setContext.Resources.GroupBy(rd => rd.Set)
.Select(g => g.ToArray()).ToList();
int uniformBinding = 0, textureBinding = 0, samplerBinding = 0, uavBinding = function.ColorOutputCount;
int setIndex = 0;
foreach (ResourceDefinition[] set in resourcesBySet)
{
Debug.Assert(set[0].Set == setIndex);
setIndex += 1;
foreach (ResourceDefinition rd in set)
{
switch (rd.ResourceKind)
{
case ShaderResourceKind.Uniform:
WriteUniform(sb, rd, uniformBinding++);
break;
case ShaderResourceKind.Texture2D:
WriteTexture2D(sb, rd, textureBinding++);
break;
case ShaderResourceKind.TextureCube:
WriteTextureCube(sb, rd, textureBinding++);
break;
case ShaderResourceKind.Texture2DMS:
WriteTexture2DMS(sb, rd, textureBinding++);
break;
case ShaderResourceKind.Sampler:
WriteSampler(sb, rd, samplerBinding++);
break;
case ShaderResourceKind.StructuredBuffer:
WriteStructuredBuffer(sb, rd, textureBinding++);
break;
case ShaderResourceKind.RWStructuredBuffer:
WriteRWStructuredBuffer(sb, rd, uavBinding++);
break;
default: throw new ShaderGenerationException("Illegal resource kind: " + rd.ResourceKind);
}
}
}
foreach (TypeAndMethodName name in orderedFunctionList)
{
ShaderFunctionAndBlockSyntax f = setContext.Functions.Single(
sfabs => sfabs.Function.DeclaringType == name.TypeName && sfabs.Function.Name == name.MethodName);
if (!f.Function.IsEntryPoint)
{
sb.AppendLine(new HlslMethodVisitor(Compilation, setName, f.Function, this).VisitFunction(f.Block));
}
}
string result = new HlslMethodVisitor(Compilation, setName, entryPoint.Function, this)
.VisitFunction(entryPoint.Block);
sb.AppendLine(result);
return(sb.ToString());
}
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));
}
protected override string GenerateFullTextCore(string setName, ShaderFunction function)
{
Debug.Assert(function.IsEntryPoint);
StringBuilder sb = new StringBuilder();
BackendContext setContext = GetContext(setName);
ShaderFunctionAndBlockSyntax entryPoint = setContext.Functions.SingleOrDefault(
sfabs => sfabs.Function.Name == function.Name);
if (entryPoint == null)
{
throw new ShaderGenerationException("Couldn't find given function: " + function.Name);
}
ValidateRequiredSemantics(setName, entryPoint.Function, function.Type);
StructureDefinition input = GetRequiredStructureType(setName, entryPoint.Function.Parameters[0].Type);
if (function.Type == ShaderFunctionType.VertexEntryPoint)
{
// HLSL vertex outputs needs to have semantics applied to the structure fields.
StructureDefinition output = CreateOutputStructure(setName, GetRequiredStructureType(setName, entryPoint.Function.ReturnType));
setContext.Functions.Remove(entryPoint);
entryPoint = entryPoint.WithReturnType(new TypeReference(output.Name));
setContext.Functions.Add(entryPoint);
}
if (function.Type == ShaderFunctionType.FragmentEntryPoint)
{
// HLSL pixel shader inputs also need these semantics.
StructureDefinition modifiedInput = CreateOutputStructure(setName, input);
setContext.Functions.Remove(entryPoint);
entryPoint = entryPoint.WithParameter(0, new TypeReference(modifiedInput.Name));
setContext.Functions.Add(entryPoint);
}
StructureDefinition[] orderedStructures
= StructureDependencyGraph.GetOrderedStructureList(Compilation, setContext.Structures);
foreach (StructureDefinition sd in orderedStructures)
{
WriteStructure(sb, sd);
}
foreach (StructureDefinition sd in GetSynthesizedStructures(setName))
{
WriteStructure(sb, sd);
}
FunctionCallGraphDiscoverer fcgd = new FunctionCallGraphDiscoverer(
Compilation,
new TypeAndMethodName {
TypeName = function.DeclaringType, MethodName = function.Name
});
fcgd.GenerateFullGraph();
TypeAndMethodName[] orderedFunctionList = fcgd.GetOrderedCallList();
List <ResourceDefinition[]> resourcesBySet = setContext.Resources.GroupBy(rd => rd.Set)
.Select(g => g.ToArray()).ToList();
int uniformBinding = 0, textureBinding = 0, samplerBinding = 0;
int setIndex = 0;
foreach (ResourceDefinition[] set in resourcesBySet)
{
Debug.Assert(set[0].Set == setIndex);
setIndex += 1;
foreach (ResourceDefinition rd in set)
{
switch (rd.ResourceKind)
{
case ShaderResourceKind.Uniform:
WriteUniform(sb, rd, uniformBinding++);
break;
case ShaderResourceKind.Texture2D:
WriteTexture2D(sb, rd, textureBinding++);
break;
case ShaderResourceKind.TextureCube:
WriteTextureCube(sb, rd, textureBinding++);
break;
case ShaderResourceKind.Sampler:
WriteSampler(sb, rd, samplerBinding++);
break;
default: throw new ShaderGenerationException("Illegal resource kind: " + rd.ResourceKind);
}
}
}
foreach (TypeAndMethodName name in orderedFunctionList)
{
ShaderFunctionAndBlockSyntax f = setContext.Functions.Single(
sfabs => sfabs.Function.DeclaringType == name.TypeName && sfabs.Function.Name == name.MethodName);
if (!f.Function.IsEntryPoint)
{
sb.AppendLine(new HlslMethodVisitor(Compilation, setName, f.Function, this).VisitFunction(f.Block));
}
}
string result = new HlslMethodVisitor(Compilation, setName, entryPoint.Function, this)
.VisitFunction(entryPoint.Block);
sb.AppendLine(result);
return(sb.ToString());
}