Added documentation for new nodes

Added documentation for Material, Export, Comment, Switch and Remote nodes.
Fixed missing "tool" attribute in editable_label script.
Reordered misc. nodes in base library.

addons/material_maker/doc/node_comment.rst

@@ -0,0 +1,8 @@
+Comment node
+~~~~~~~~~~~~
+
+The Comment node has no effect on the material and can be used to document
+it. Simply double-click on the contents to edit it.
+
+.. image:: images/node_comment.png
+

addons/material_maker/doc/node_export.rst

@@ -0,0 +1,24 @@
+Export node
+~~~~~~~~~~~
+
+The Export node defines a a texture that will be saved together with the
+material textures when exporting the project.
+
+.. image:: images/node_export.png
+
+Inputs
+++++++
+
+The Export node has an input that will be saved when exporting the project.
+
+Outputs
++++++++
+
+The Export node does not have any output.
+
+Parameters
+++++++++++
+
+The Export node has a single parameter that defines the suffix PNG file
+that will be created.
+

addons/material_maker/doc/node_material.rst

@@ -0,0 +1,52 @@
+Material node
+~~~~~~~~~~~~~
+
+The Material node defines a material using its inputs.
+
+There is one and only one Material node for each Material Maker project,
+it is created for each new project and cannot be deleted or duplicated.
+When copied and pasted together with other nodes, the Material node will
+not be pasted, but connections will be copied if possible.
+
+When exporting a project to PNG files, all inputs are generated as PNG
+files whose name is generated using the project name and the name of the
+corresponding property in the material.
+
+When using Material Maker as a Godot addon, the metallic, roughness and
+ambient occlusion are automatically combined into a single texture, and
+a SpatialMaterial is generated automatically.
+
+.. image:: images/node_material.png
+
+Inputs
+++++++
+
+The Material node has an input for each supported property (albedo, metallic,
+roughness, emissive, normal, ambient occlusion and depth maps) of the material.
+
+Outputs
++++++++
+
+The Material node does not have any output.
+
+Parameters
+++++++++++
+
+The Material node has parameters:
+
+* The size of the texture files to be generated.
+
+* A color associated to the albedo property. The texture used for the albedo input is multiplied by this color.
+
+* The value of the metallic property of the material. The texture used for the metallic input is multiplied by this value.
+
+* The value of the roughness property of the material. The texture used for the roughness input is multiplied by this value.
+
+* The energy of the emissive property of the material.
+
+* The value of the normal map property of the material. It is used to strengthen or lighten the effect of the normal map.
+
+* The value of the ambient occlusion property of the material. The texture used for the ambient occlusion input is multiplied by this value.
+
+* The value of the depth property of the material. The input depth map is multiplied by this value.
+

addons/material_maker/doc/node_remote.rst

@@ -0,0 +1,52 @@
+Remote node
+~~~~~~~~~~~
+
+The Remote node has no direct effect on the material and can be used to control
+key parameters of the material to configure it easily.
+
+.. image:: images/node_remote.png
+
+When started, the Remote node only shows 2 buttons.
+
+The left button can be used to create a linked control, that can be used to
+mirror one or several similar parameters.
+The right button can be used to create a configuration control, that can be
+associated to several parameters and store several named configurations for
+those parameters.
+
+Linked control
+++++++++++++++
+
+When creating a Linked control (using the "Create linked control" button),
+it is necessary to first pick a parameter in the material graph. The newly
+created control will be a copy of the selected parameter control, and when
+changing the value of the Linked control, the associated control will be
+updated accordingly.
+
+A Linked control can also be associated to other parameters, provided they
+are of the same kind.
+
+When hovering on the Linked control, Material Maker will show the parameters
+it controls.
+
+Configuration control
++++++++++++++++++++++
+
+When creating a Configuration control (using the "Create configuration control"
+button), it is necessary to first pick a parameter in the material graph.
+The newly created control will hold a list of configurations of the associated
+parameters.
+
+A Linked control can be associated to other parameters, and it is recommended to
+associate all relevant parameters before adding configurations.
+
+When hovering on the Linked control, Material Maker will show the parameters
+it controls.
+
+To create a configuration, set all associated parameters to the desired values,
+and select the "<add configuration>" entry in the drop-down list. Then enter a
+name for this configuration, and it will be added to the list.
+
+The drop-down list can be used to select a configuration, create new ones and
+update or delete the current configuration.
+

addons/material_maker/doc/node_switch.rst

@@ -0,0 +1,26 @@
+Switch node
+~~~~~~~~~~~
+
+The Switch node can be used to select sources for 2 output textures
+A and B from a choice of 2 pairs (A1, B1) and (A2, B2). It is useful
+to create variations of a material and easily switch between them.
+
+.. image:: images/node_switch.png
+
+Inputs
+++++++
+
+The Switch node has 4 color inputs A1, B1, A2 and B2.
+
+Outputs
++++++++
+
+The Switch node has 2 outputs A and B.
+
+Parameters
+++++++++++
+
+The Switch node has a single parameter whose value can be 1 or 2.
+When the parameter is set to 1, A forwards A1 and B forwards B1.
+When the parameter is set to 2, A forwards A2 and B forwards B2.
+

addons/material_maker/doc/nodes.rst

@@ -7,3 +7,4 @@ This section describes all nodes that can be used in a procedural material.
 
 	nodes_generators
 	nodes_filters
+	nodes_misc

addons/material_maker/doc/nodes_misc.rst

@@ -0,0 +1,10 @@
+Miscellaneous nodes
+-------------------
+
+.. toctree::
+
+	node_material
+	node_export
+	node_switch
+	node_comment
+	node_remote

addons/material_maker/library/base.json

@@ -194,6 +194,10 @@
         }
       ]	
 	},
+	{
+		"tree_item":"Miscellaneous/Comment",
+		"type":"comment"
+	},
 	{
 		"tree_item":"Miscellaneous/Export",
 		"type":"export"
@@ -205,9 +209,5 @@
 	{
 		"tree_item":"Miscellaneous/Remote",
 		"type":"remote"
-	},
-	{
-		"tree_item":"Miscellaneous/Comment",
-		"type":"comment"
 	}
 ]}

addons/material_maker/widgets/linked_widgets/editable_label.gd

@@ -1,3 +1,4 @@
+tool
 extends Label
 
 func _ready():