protected bool TryDiscoverStructure(string setName, string name, out StructureDefinition sd)
{
ITypeSymbol type = Compilation.FindTypeByMetadataName(name);
if (type == null)
{
sd = null;
return(false);
// throw new ShaderGenerationException("Unable to obtain compilation type metadata for " + name);
}
else if (type.OriginalDefinition.DeclaringSyntaxReferences.Length == 0)
{
if (TryReflectStructure(setName, type, out sd))
{
AddStructure(setName, sd);
return(true);
}
}
else
{
SyntaxNode declaringSyntax = type.OriginalDefinition.DeclaringSyntaxReferences[0].GetSyntax();
if (declaringSyntax is StructDeclarationSyntax sds)
{
if (ShaderSyntaxWalker.TryGetStructDefinition(Compilation.GetSemanticModel(sds.SyntaxTree), sds, out sd))
{
AddStructure(setName, sd);
return(true);
}
}
}
sd = null;
return(false);
}
private void GenerateShaders(ShaderSetInfo ss, ShaderGenerationResult result)
{
TypeAndMethodName vertexFunctionName = ss.VertexShader;
TypeAndMethodName fragmentFunctionName = ss.FragmentShader;
HashSet <SyntaxTree> treesToVisit = new HashSet <SyntaxTree>();
if (vertexFunctionName != null)
{
GetTrees(treesToVisit, vertexFunctionName.TypeName);
}
if (fragmentFunctionName != null)
{
GetTrees(treesToVisit, fragmentFunctionName.TypeName);
}
foreach (LanguageBackend language in _languages)
{
language.InitContext(ss.Name);
}
ShaderSyntaxWalker walker = new ShaderSyntaxWalker(_compilation, _languages.ToArray(), ss);
foreach (SyntaxTree tree in treesToVisit)
{
walker.Visit(tree.GetRoot());
}
foreach (LanguageBackend language in _languages)
{
ShaderModel model = language.GetShaderModel(ss.Name);
ShaderFunction vsFunc = (ss.VertexShader != null)
? model.GetFunction(ss.VertexShader.FullName)
: null;
ShaderFunction fsFunc = (ss.FragmentShader != null)
? model.GetFunction(ss.FragmentShader.FullName)
: null;
{
string vsCode = null;
string fsCode = null;
if (vsFunc != null)
{
vsCode = language.GetCode(ss.Name, vsFunc);
}
if (fsFunc != null)
{
fsCode = language.GetCode(ss.Name, fsFunc);
}
result.AddShaderSet(language, new GeneratedShaderSet(ss.Name, vsCode, fsCode, vsFunc, fsFunc, model));
}
}
}