Layering

DarkTrees can be layered with other DarkTrees or any other shaders.  Right-click on the Material Editor Preview to bring up the layers pop-up menu as shown below.

In the example above, the multi-layer material has a Copper Tarnish base and a Pumice bump layer.  The color and reflectance shaders in the sub-layer are ignored by setting the constant alpha blend all the way to the right (value = 1).

There are a few tricks to know when using SimbiontTS in layers.

 When loading a DarkTree into a sub-layer, always click on the No button in the "Load DarkTree into unselected shaders?" dialog. Since sub-layers do not use transparency shaders, clicking the Yes button destroys the layers and loads the DarkTree into all four shader channels of the base layer.

 When creating or switching between layers of a multi-DarkTree material, close and reopen the SimbiontTS properties dialog to make sure you are controlling the currently selected layer.

 Tweaking multiple DarkTrees in a layered material is not fully supported. For the best results, tweak the base layer DarkTree first before adding a new layer or duplicating the layer.

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