Select node
~~~~~~~~~~~

The **Select** node merges two 3D textures by assigning all samples to its first
input except those whose color index match the color parameter.

.. image:: images/node_3d_texture_select.png
	:align: center

Inputs
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The **Select** node accepts two 3D texture inputs:

* the default texture, used for all samples that don't match the color parameter
* the selected texture that is assigned to all samples that match

Outputs
.......

The **Select** node generates a merged 3D texture.

Parameters
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The **Select** node does accepts 2 parameters:

* a color index that is compared with the color index of each sample
* a tolerance value  used when comparing the color parameter with the sample's color index