Simplygon 9 Documentation

# SimplygonShadingNetwork command

# Description

The SimplygonShadingNetwork command is responsible for creating shading network templates in Maya. Shading networks are usually generated automatically in the plug-in but for some material types, such as DirectX and CGFX (HLSL), the mapping has to be done manually. It is recommended to read Shading network concepts before proceeding.

# Syntax

    # Flags and args

    Short flag Long flag Argument(s) Description
    cn CreateNode string materialName
    string nodeType
    string nodeName    		 Creates a node of the given type.
    si SetInput string materialName
    string nodeName
    uint inputSlot
    string nodeNameToConnect    		 Connects a node to another node’s input slot.
    sd SetDefault string materialName
    string nodeName
    uint inputSlot
    double A
    double B
    double C    		 Sets default values for the given node input.
    sd1 SetDefault1f string materialName
    string nodeName
    uint inputSlot
    uint component
    double A    		 Sets default value for the given node input on the given component [RGBA, 0-3].
    sce SetExitNode string materialName
    string channelName
    string nodeName    		 Sets the exit node for the given material channel.
    exf ExportXML string materialName
    string channelName
    string filePath    		 Exports shading network for the given material channel to file.
    swz Swizzle string materialName
    string nodeName
    uint inputSlot
    uint outputSlot    		 Sets output slot for the given input slot for the specified swizzle node
    (RGBA -> 0, 1, 2, 3).
    svn SetVertexColorName string materialName
    string nodeName
    string colorSetName    		 Sets which color set to sample from for the given vertex color node.
    svc SetVertCol string materialName
    string nodeName
    uint colorSet    		 Sets which color set to sample from for the given vertex color node.
    uva SetUVAll string nodeName
    string uvSetName    		 Sets the UV-set for the texture nodes matching the specified node name.
    uvm SetUVMaterial string materialName
    string nodeName
    string uvSetName    		 Sets the UV-set for the texture nodes that matches the specified node name for the given material.
    uvc SetUVMaterialChannel string materialName
    string channelName
    string nodeName
    string uvSetName    		 Sets the UV-set for the texture nodes that matches the specified node name for the given material channel.
    sa SetSRGBAll string nodeName
    bool isSRGB    		 Sets the sRGB flag for the texture nodes matching the specified node name.
    sm SetSRGBMaterial string materialName
    string nodeName
    bool isSRGB    		 Sets the sRGB flag for the texture nodes that matches the specified node name for the given material.
    sc SetSRGBMaterialChannel string materialName
    string channelName
    string nodeName
    bool isSRGB    		 Sets the sRGB flag for the texture nodes that matches the specified node name for the given material channel.
    tmc SetUVTilingMaterialChannel string materialName
    string channelName
    string nodeName
    double uTiling
    double vTiling    		 Sets u- and v-tiling for the given texture node.
    omc SetUVOffsetMaterialChannel string materialName
    string channelName
    string nodeName
    double uOffset
    double vOffset    		 Sets u- and v-offset for the given texture node.

    # Examples

    This section contains some examples on how to setup shading networks through MEL and Python. We've left out some parts of the scripts to keep things as simple as possible.

    • import maya.cmds as cmds must declared at the top of each Python script.
    • reductionPipeline settings-path must be declared for both MEL and Python scripts where it makes sense.
    • materialName is used as a place-holder for the name of the material we are currently working on.
    • a scene-selection is made before each Simplygon-command.

    # Create shading node

    Creates two texture-nodes that points to the texture slots for the DirectX or CGFX material's HLSL shader, in this case DiffuseSampler and NormalSampler (as defined in the shader). See the Setting up CGFX/HLSL material and Scripting against CGFX/HLSL material for a more detailed explanation on how to translate HLSL materials to Simplygon shading networks.

      # Set default values

      Sets the default values of for example a Multiply-node.

        # Set exit node

        Assigns a shading node to a material channel, in this case we connect as texture node (which points to DiffuseSampler in shader) to the Diffuse channel.

          # Set swizzle

          Reverses the color channels (RGBA -> ABGR).

            # Set vertex-color set

            Assigns "colorSet1" (of the mesh) to a vertex-color node. Can be used to blend textures by vertex colors or bake vertex colors to texture.

              # Override UV-set

              Overrides a texture-node's UV-set (globally).

                # Override sRGB

                Overrides the sRGB-flag for Diffuse and Normals.

                  # Override tiling/offset

                  Overrides a texture-node's tiling and offset values for the Diffuse channel.

                    # Export Shading Network XML

                    Exports a shading network for the given material channel to XML.

                      # Import Shading Network XML

                      Imports shading network XML through the Simplygon command.

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