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Stefano Feltre avatar image
Stefano Feltre asked ·

Displaced Faces - UV Distortion

Hello Everyone,

I'm trying to follow Lee's tutorial "Displaced Faces". I opened his scene to check the graph node, but whenever I render Maya crashes...I then tried to do it myself and I think I manage to do it, the only problem is that whenever I try to render this error comes out:

# Error: line 1: [maketx] Couldn't convert the texture to TX "D:/Path/Image.jpeg"

No matter what texture file I use.Anyway I could fix this?
Thanks

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Stefano Feltre avatar image
Stefano Feltre answered ·

@Lee Griggs
Ah thank you both!

the sentence I'm talking about is in this tutorial:
https://docs.arnoldrenderer.com/display/A5ARNTUT/Remap+an+Image+Using+UV+Coords

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Lee Griggs avatar image
Lee Griggs answered ·

1. Why do you have a ramp with three colors? What do these 3 colors do exactly? I don't understand as these colors are not even visible when rendering..

Use the UV ramp colors to remap the colors of the image.

2. However, I can't really find any exposure parameter..

It's on the Color Correct.

3. Connect a Utility shader with a Flat Shade Mode and a UV Color Mode (via an Add shader) connected to the image shaders UV coords.

Where is this in the tutorial?

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Kyan E avatar image
Kyan E answered ·

Hey Stefano,

you need to use Arnold nodes! aiColorCorrect, aiUtility and aiAdd. In there you find the settings you are looking for. I hope this helps.


aiclorcorrect.png (51.6 KiB)
utilityflat.png (43.8 KiB)
aiadd.png (76.7 KiB)
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Stefano Feltre avatar image
Stefano Feltre answered ·
@Lee Griggs

I tried on another pc and for some reason now it works...However, may I ask you some things related to it which I'm not understanding?
1)Why do you have a ramp with three colors? What do these 3 colors do exactly? I don't understand as these colors are not even visible when rendering..

2)The last sentence of the tutorial stases this:

  • Animating the Exposure (using a Color Correct) of the texture used to distort the Image shader will produce the final result

However, I can't really find any exposure parameter..

3)In the tutorial is written this:

  • Connect a Utility shader with a Flat Shade Mode and a UV Color Mode (via an Add shader) connected to the image shaders UV coords.

However, I can't see any of these 2 nodes in the scene you provide and I don't understand what these would allow us to do if used with the rest of the nodes.

Thank you and sorry for the many questions!

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Lee Griggs answered ·

I just tried it and it works fine. Did you open the included image?


uv-mona.jpg (466.3 KiB)
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