public static void BuildType(System.Type t, ActiveFields activeFields, ShaderGenerator result, bool isDebug)
{
result.AddShaderChunk("struct " + t.Name);
result.AddShaderChunk("{");
result.Indent();
foreach (FieldInfo field in t.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
if (field.MemberType == MemberTypes.Field)
{
bool isOptional = false;
var fieldIsActive = false;
var keywordIfdefs = string.Empty;
if (activeFields.permutationCount > 0)
{
// Evaluate all activeFields instance
var instances = activeFields
.allPermutations.instances
.Where(i => ShouldSpliceField(t, field, i, out isOptional))
.ToList();
fieldIsActive = instances.Count > 0;
if (fieldIsActive)
{
keywordIfdefs = KeywordUtil.GetKeywordPermutationSetConditional(instances
.Select(i => i.permutationIndex).ToList());
}
}
else
{
fieldIsActive = ShouldSpliceField(t, field, activeFields.baseInstance, out isOptional);
}
if (fieldIsActive)
{
// The field is used, so generate it
var semanticString = GetFieldSemantic(field);
int componentCount;
var fieldType = GetFieldType(field, out componentCount);
var conditional = GetFieldConditional(field);
if (conditional != null)
{
result.AddShaderChunk("#if " + conditional);
}
if (!string.IsNullOrEmpty(keywordIfdefs))
{
result.AddShaderChunk(keywordIfdefs);
}
var fieldDecl = fieldType + " " + field.Name + semanticString + ";" + (isOptional & isDebug ? " // optional" : string.Empty);
result.AddShaderChunk(fieldDecl);
if (!string.IsNullOrEmpty(keywordIfdefs))
{
result.AddShaderChunk("#endif" + (isDebug ? " // Shader Graph Keywords" : string.Empty));
}
if (conditional != null)
{
result.AddShaderChunk("#endif" + (isDebug ? $" // {conditional}" : string.Empty));
}
}
}
}
result.Deindent();
result.AddShaderChunk("};");
object[] packAttributes = t.GetCustomAttributes(typeof(InterpolatorPack), false);
if (packAttributes.Length > 0)
{
result.AddNewLine();
if (activeFields.permutationCount > 0)
{
var generatedPackedTypes = new Dictionary <string, (ShaderGenerator, List <int>)>();
foreach (var instance in activeFields.allPermutations.instances)
{
var instanceGenerator = new ShaderGenerator();
BuildPackedType(t, instance, instanceGenerator, isDebug);
var key = instanceGenerator.GetShaderString(0);
if (generatedPackedTypes.TryGetValue(key, out var value))
{
value.Item2.Add(instance.permutationIndex);
}
else
{
generatedPackedTypes.Add(key, (instanceGenerator, new List <int> {
instance.permutationIndex
}));