Add varying support to visual shaders

doc/classes/VisualShader.xml

@@ -20,6 +20,14 @@
 				Adds the specified node to the shader.
 			</description>
 		</method>
+		<method name="add_varying">
+			<return type="void" />
+			<argument index="0" name="name" type="String" />
+			<argument index="1" name="mode" type="int" enum="VisualShader.VaryingMode" />
+			<argument index="2" name="type" type="int" enum="VisualShader.VaryingType" />
+			<description>
+			</description>
+		</method>
 		<method name="can_connect_nodes" qualifiers="const">
 			<return type="bool" />
 			<argument index="0" name="type" type="int" enum="VisualShader.Type" />
@@ -100,6 +108,12 @@
 			<description>
 			</description>
 		</method>
+		<method name="has_varying" qualifiers="const">
+			<return type="bool" />
+			<argument index="0" name="name" type="String" />
+			<description>
+			</description>
+		</method>
 		<method name="is_node_connection" qualifiers="const">
 			<return type="bool" />
 			<argument index="0" name="type" type="int" enum="VisualShader.Type" />
@@ -119,6 +133,12 @@
 				Removes the specified node from the shader.
 			</description>
 		</method>
+		<method name="remove_varying">
+			<return type="void" />
+			<argument index="0" name="name" type="String" />
+			<description>
+			</description>
+		</method>
 		<method name="replace_node">
 			<return type="void" />
 			<argument index="0" name="type" type="int" enum="VisualShader.Type" />
@@ -182,6 +202,24 @@
 		<constant name="TYPE_MAX" value="10" enum="Type">
 			Represents the size of the [enum Type] enum.
 		</constant>
+		<constant name="VARYING_MODE_VERTEX_TO_FRAG_LIGHT" value="0" enum="VaryingMode">
+		</constant>
+		<constant name="VARYING_MODE_FRAG_TO_LIGHT" value="1" enum="VaryingMode">
+		</constant>
+		<constant name="VARYING_MODE_MAX" value="2" enum="VaryingMode">
+		</constant>
+		<constant name="VARYING_TYPE_FLOAT" value="0" enum="VaryingType">
+		</constant>
+		<constant name="VARYING_TYPE_VECTOR_2D" value="1" enum="VaryingType">
+		</constant>
+		<constant name="VARYING_TYPE_VECTOR_3D" value="2" enum="VaryingType">
+		</constant>
+		<constant name="VARYING_TYPE_COLOR" value="3" enum="VaryingType">
+		</constant>
+		<constant name="VARYING_TYPE_TRANSFORM" value="4" enum="VaryingType">
+		</constant>
+		<constant name="VARYING_TYPE_MAX" value="5" enum="VaryingType">
+		</constant>
 		<constant name="NODE_ID_INVALID" value="-1">
 		</constant>
 		<constant name="NODE_ID_OUTPUT" value="0">

doc/classes/VisualShaderNodeVarying.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="VisualShaderNodeVarying" inherits="VisualShaderNode" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+	<members>
+		<member name="varying_name" type="String" setter="set_varying_name" getter="get_varying_name" default="&quot;[None]&quot;">
+		</member>
+		<member name="varying_type" type="int" setter="set_varying_type" getter="get_varying_type" enum="VisualShader.VaryingType" default="0">
+		</member>
+	</members>
+</class>

doc/classes/VisualShaderNodeVaryingGetter.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="VisualShaderNodeVaryingGetter" inherits="VisualShaderNodeVarying" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+</class>

doc/classes/VisualShaderNodeVaryingSetter.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="VisualShaderNodeVaryingSetter" inherits="VisualShaderNodeVarying" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
+	<brief_description>
+	</brief_description>
+	<description>
+	</description>
+	<tutorials>
+	</tutorials>
+</class>