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.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/VisualShaderNodeDerivativeFunc.xml.

.. _class_VisualShaderNodeDerivativeFunc:

VisualShaderNodeDerivativeFunc
==============================

**Inherits:** :ref:`VisualShaderNode<class_VisualShaderNode>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

Calculates a derivative within the visual shader graph.

Description
-----------

This node is only available in ``Fragment`` and ``Light`` visual shaders.

Properties
----------

+---------------------------------------------------------------+-------------------------------------------------------------------------+-------+
| :ref:`Function<enum_VisualShaderNodeDerivativeFunc_Function>` | :ref:`function<class_VisualShaderNodeDerivativeFunc_property_function>` | ``0`` |
+---------------------------------------------------------------+-------------------------------------------------------------------------+-------+
| :ref:`OpType<enum_VisualShaderNodeDerivativeFunc_OpType>`     | :ref:`op_type<class_VisualShaderNodeDerivativeFunc_property_op_type>`   | ``0`` |
+---------------------------------------------------------------+-------------------------------------------------------------------------+-------+

Enumerations
------------

.. _enum_VisualShaderNodeDerivativeFunc_OpType:

.. _class_VisualShaderNodeDerivativeFunc_constant_OP_TYPE_SCALAR:

.. _class_VisualShaderNodeDerivativeFunc_constant_OP_TYPE_VECTOR_2D:

.. _class_VisualShaderNodeDerivativeFunc_constant_OP_TYPE_VECTOR_3D:

.. _class_VisualShaderNodeDerivativeFunc_constant_OP_TYPE_VECTOR_4D:

.. _class_VisualShaderNodeDerivativeFunc_constant_OP_TYPE_MAX:

enum **OpType**:

- **OP_TYPE_SCALAR** = **0** --- A floating-point scalar.

- **OP_TYPE_VECTOR_2D** = **1** --- A 2D vector type.

- **OP_TYPE_VECTOR_3D** = **2** --- A 3D vector type.

- **OP_TYPE_VECTOR_4D** = **3** --- A 4D vector type.

- **OP_TYPE_MAX** = **4** --- Represents the size of the :ref:`OpType<enum_VisualShaderNodeDerivativeFunc_OpType>` enum.

----

.. _enum_VisualShaderNodeDerivativeFunc_Function:

.. _class_VisualShaderNodeDerivativeFunc_constant_FUNC_SUM:

.. _class_VisualShaderNodeDerivativeFunc_constant_FUNC_X:

.. _class_VisualShaderNodeDerivativeFunc_constant_FUNC_Y:

.. _class_VisualShaderNodeDerivativeFunc_constant_FUNC_MAX:

enum **Function**:

- **FUNC_SUM** = **0** --- Sum of absolute derivative in ``x`` and ``y``.

- **FUNC_X** = **1** --- Derivative in ``x`` using local differencing.

- **FUNC_Y** = **2** --- Derivative in ``y`` using local differencing.

- **FUNC_MAX** = **3** --- Represents the size of the :ref:`Function<enum_VisualShaderNodeDerivativeFunc_Function>` enum.

Property Descriptions
---------------------

.. _class_VisualShaderNodeDerivativeFunc_property_function:

- :ref:`Function<enum_VisualShaderNodeDerivativeFunc_Function>` **function**

+-----------+---------------------+
| *Default* | ``0``               |
+-----------+---------------------+
| *Setter*  | set_function(value) |
+-----------+---------------------+
| *Getter*  | get_function()      |
+-----------+---------------------+

A derivative function type. See :ref:`Function<enum_VisualShaderNodeDerivativeFunc_Function>` for options.

----

.. _class_VisualShaderNodeDerivativeFunc_property_op_type:

- :ref:`OpType<enum_VisualShaderNodeDerivativeFunc_OpType>` **op_type**

+-----------+--------------------+
| *Default* | ``0``              |
+-----------+--------------------+
| *Setter*  | set_op_type(value) |
+-----------+--------------------+
| *Getter*  | get_op_type()      |
+-----------+--------------------+

A type of operands and returned value. See :ref:`OpType<enum_VisualShaderNodeDerivativeFunc_OpType>` for options.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`