public void FindField(ShaderType owningType, string fieldName, out ShaderField shaderField, out int fieldIndex)
{
FindInstanceField(owningType, fieldName, out shaderField, out fieldIndex);
if (shaderField == null)
{
GlobalShaderField globalShaderField;
FindStaticField(owningType, fieldName, out globalShaderField, out fieldIndex);
shaderField = globalShaderField;
}
}
public ShaderField CreateField(ShaderType owningType, ShaderType fieldType, string name, IShaderIR initializerExpression)
{
var shaderField = new ShaderField();
shaderField.mMeta = new ShaderFieldMeta();
shaderField.mType = fieldType;
shaderField.mMeta.mName = name;
shaderField.DebugInfo.Name = name;
owningType.mFields.Add(shaderField);
return(shaderField);
}
IShaderIR GetInitialValue(VariableDeclaratorSyntax variable, ShaderField shaderField)
{
// If this field has an initializer expression then walk and visit it.
if (variable.Initializer != null)
{
return(mCommonPass.WalkAndGetValueTypeResult(variable.Initializer));
}
// Otherwise, build the default value based upon the type.
else
{
return(GenerateDefaultValueOp(shaderField));
}
}
void WriteFieldDebugName(ShaderType owningType, int memberIndex, ShaderField field, string debugName)
{
if (string.IsNullOrEmpty(debugName))
{
return;
}
var wordCount = mWriter.GetPaddedWordCount(debugName);
var instructionSize = (UInt16)(3 + wordCount);
mWriter.WriteInstruction(instructionSize, Spv.Op.OpMemberName);
mWriter.Write(GetId(owningType));
mWriter.Write(memberIndex);
mWriter.Write(debugName);
}
ShaderOp GenerateDefaultValueOp(ShaderField shaderField)
{
var shaderFieldDerefType = shaderField.mType.GetDereferenceType();
if (shaderFieldDerefType == FindType(typeof(bool)))
{
return(mFrontEnd.CreateConstantOp(shaderFieldDerefType, false));
}
else if (shaderFieldDerefType == FindType(typeof(int)))
{
var contantLiteral = mFrontEnd.CreateConstantLiteral(0);
return(mFrontEnd.CreateConstantOp(shaderFieldDerefType, contantLiteral));
}
else if (shaderFieldDerefType == FindType(typeof(uint)))
{
var contantLiteral = mFrontEnd.CreateConstantLiteral(0u);
return(mFrontEnd.CreateConstantOp(shaderFieldDerefType, contantLiteral));
}
else if (shaderFieldDerefType == FindType(typeof(float)))
{
var contantLiteral = mFrontEnd.CreateConstantLiteral(shaderFieldDerefType, 0.0f.ToString());
return(mFrontEnd.CreateConstantOp(shaderFieldDerefType, contantLiteral));
}
else if (shaderFieldDerefType.mBaseType == OpType.Struct)
{
var fieldPtrType = shaderFieldDerefType.FindPointerType(StorageClass.Function);
var localVariableOp = mFrontEnd.CreateOpVariable(fieldPtrType, mContext);
localVariableOp.DebugInfo.Name = "temp" + shaderFieldDerefType.mMeta.mName;
var resultType = FindType(typeof(void));
var fnCall = CreateOp(mContext.mCurrentBlock, OpInstructionType.OpFunctionCall, resultType, new List <IShaderIR> {
shaderFieldDerefType.mImplicitConstructor, localVariableOp
});
var loadOp = mFrontEnd.CreateOp(mContext.mCurrentBlock, OpInstructionType.OpLoad, shaderFieldDerefType, new List <IShaderIR> {
localVariableOp
});
return(loadOp);
}
return(null);
}
public void Visit(ShaderField field)
{
Visit(field.mType);
}
public void ExtractDebugInfo(ShaderField field, ISymbol symbol, SyntaxNode node)
{
field.DebugInfo.Name = symbol.Name;
field.DebugInfo.Location = node.GetLocation();
}
public FieldKey(ShaderField field)
{
mKey = $"{field.mType.mMeta.mName}_{field.mMeta.mName}";
}
public void FindInstanceField(ShaderType owningType, string fieldName, out ShaderField shaderField, out int fieldIndex)
{
FindField(owningType.mFields, fieldName, out shaderField, out fieldIndex);
}