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Uv Set Name – Specifies the UVW Channel to render by the name of the UV set.

Uv Index – Selects the UVW mapping channel of the connected Bitmap node.

Refraction Ior – Sets the Index of Refraction.

Transform . P – Specifies how to position the map.

Transform . R – Specifies how to rotate the map.

Transform . S – Specifies the scale of the map.

Transform . Sh – Specifies a shear for the map.

Transform . Order – Specifies the order of the rotations.

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Example: Creating 2D Transparency with the Sampler Info Node

You can effectively fade out objects in your scene using the V-Ray Sampler Info node. This method guarantees that the entire object is faded, including the internal structures, similar to how a 2D object would fade. Тo achieve this 2D transparency effect, follow the steps or copy the Node Editor Setup from the screenshot.

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Create a V-Ray Material node.
Create a V-Ray MultiSubTex node and attach it to the Opacity port of the V-Ray Material node.
In the MultiSubTex General options, set the Mode to Use ID Generator Texture.
Create a V-Ray Sampler Info node and attach its Transparency Level to the Switch ID Texture slot.

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5. Go to the Texture List of the MultiSubTex and set the sub-texture's ID to 0.
6. Create a V-Ray User Color node and attach it to the sub-texture's Texture slot.
7. Set the MultiSubTexture's Default color to completely black (0, 0, 0).
8. Apply the V-Ray Material node to your geometry.

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Node Editor Setup

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Click on the image to preview it in full size

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maxLabel	2D

Comparison between 2D and 3D transparency effect. Notice how the internal structures display in each case.

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3D Transparency

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Opaque

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2D Transparency

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Example: Creating 2D Transparency with the Sampler Info Node