public DataStorageItem <T> Add <T>(string name, int length)
{
DataStorageItem <T> ret = new DataStorageItem <T>(name, length);
m_Storage.Add(name, ret);
return(ret);
}
private void PrepareShaderStage(StageType stage, object shaderInstance)
{
Type type = shaderInstance.GetType();
Expression primiteVertexIndexExpression = IntrospectionUtil.GetFieldExpression(this, nameof(PrimitiveVertexIndex));
foreach (var fieldInfo in type.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
string debugFieldName = string.Format("{0}.{1}", type.Name, fieldInfo.Name);
var fieldExpression = IntrospectionUtil.GetFieldExpression(shaderInstance, fieldInfo);
// BUILTIN
if (m_ShaderBuiltins.IsBuiltin(stage, fieldInfo.Name))
{
if (!m_ShaderBuiltins.Validate(stage, fieldInfo))
{
DebugMsg(string.Format("ERROR: failed to bind: invalid builtin {0}", debugFieldName));
continue;
}
var builtin = m_ShaderBuiltins.Get(stage, fieldInfo.Name);
var directionIn = builtin.Flags.HasFlag(BuiltinFlags.In);
var directionOut = builtin.Flags.HasFlag(BuiltinFlags.Out);
if (directionIn || directionOut)
{
Expression builtinVarExpression = IntrospectionUtil.GetFieldExpression(this, builtin.Name);
Expression builtinExpression = builtinVarExpression;
// Indexed?
if (builtin.Flags.HasFlag(BuiltinFlags.IndexedPerVertex))
{
builtinExpression = IntrospectionUtil.GetArrayAccessExpression(builtinVarExpression, primiteVertexIndexExpression);
}
if (!ValidateFieldType(fieldInfo, builtinExpression.Type))
{
continue;
}
if (directionIn)
{
// m_Stages[stage].AddPreaction(IntrospectionUtil.CreateAssign(fieldExpression, builtinExpression));
m_PipelineProgramDefinition.PreActions[stage].Add(Expression.Assign(fieldExpression, builtinExpression));
}
if (directionOut)
{
// m_Stages[stage].AddPostAction(IntrospectionUtil.CreateAssign(builtinExpression, fieldExpression));
m_PipelineProgramDefinition.PostActions[stage].Add(Expression.Assign(builtinExpression, fieldExpression));
}
}
if (builtin.Flags.HasFlag(BuiltinFlags.HasAction))
{
builtin.UseAction.Invoke();
}
continue;
}
// ----- Verify ShaderAttribute -----
var attrs = fieldInfo.GetCustomAttributes(typeof(ShaderLayoutAttribute)).ToArray();
if (attrs.Length < 1)
{
continue;
}
if (attrs.Length > 1)
{
DebugMsg(string.Format("Ambiguous attributes for field {0}", debugFieldName));
continue;
}
ShaderLayoutAttribute atr = (ShaderLayoutAttribute)attrs[0];
// ----- User variable with ShaderAttribute -----
if (atr.type == ShaderLayoutType.Uniform)
{
var readUniformCall = GetReadUniformExpression(fieldInfo, atr.binding, atr.set);
if (readUniformCall != null)
{
m_PipelineProgramDefinition.UniformLoader.Add(Expression.Assign(fieldExpression, readUniformCall));
}
continue;
}
if (stage == StageType.VertexShader)
{
// IF IN: obj.var = ReadVertexBuffer(location)
// IF OUT: storage[var][index] = obj.var
if (atr.type == ShaderLayoutType.In)
{
Type vertexBufferType = GetVertexBufferType(fieldInfo, atr.location);
if (vertexBufferType == null)
{
// incompatible or not found
continue;
}
if (!ValidateFieldType(fieldInfo, vertexBufferType))
{
continue;
}
var readVertexBufferCall = GetReadVertexBufferExpression(fieldInfo, atr.location);
if (readVertexBufferCall != null)
{
m_PipelineProgramDefinition.PreActions[stage].Add(Expression.Assign(fieldExpression, readVertexBufferCall));
}
}
else if (atr.type == ShaderLayoutType.Out)
{
DataStorageItem storage = m_Storage.AddGeneric(fieldInfo.Name, fieldInfo.FieldType, PrimitiveLength);
Expression storageExpression = storage.GetIndexedExpression(primiteVertexIndexExpression);
m_PipelineProgramDefinition.PostActions[stage].Add(Expression.Assign(storageExpression, fieldExpression));
}
}
else if (stage == StageType.FragmentShader)
{
// IF IN: obj.var = ReadSmoth(storage[var])
// IF OUT: WriteColorOutput(location, obj.var)
if (atr.type == ShaderLayoutType.In)
{
if (!m_Storage.HasKey(fieldInfo.Name))
{
DebugMsg(string.Format("ERROR: failed to bind field {0} (not found)", debugFieldName));
continue;
}
DataStorageItem storage = m_Storage.Get(fieldInfo.Name);
if (!ValidateFieldType(fieldInfo, storage.DataType))
{
continue;
}
var storageArrayExpression = storage.GetArrayExpression();
var readSmothCall = GetReadSmothExpression(fieldInfo, storageArrayExpression);
m_PipelineProgramDefinition.PreActions[stage].Add(Expression.Assign(fieldExpression, readSmothCall));
}
else if (atr.type == ShaderLayoutType.Out)
{
if (!ValidateFieldType(fieldInfo, P_WRITE_COLOR_TYPE))
{
continue;
}
var writeColorOutputCall = GetWriteColorOutputExpression(atr.location, fieldExpression);
m_PipelineProgramDefinition.PostActions[stage].Add(writeColorOutputCall);
}
}
}
}