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Sezgin Arslan avatar image
Sezgin Arslan asked ·

Converting Maya Mental ray to Arnold..I wonder why I lost the details in the model?

Hello I have a TREX model for maya and it is based on Mental ray (picture 2 the dark one) I have used the conversion script and then got a glossy look increased the thoughness and the result is shown below. Problem is Arnold is not giving the skin details of the TREX not like mental ray. what should I fo to make the model best_? Thanks for your time.

mtoashadersmaterial
arnold.jpg (1.1 MiB)
mental-ray.gif (581.4 KiB)
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Lee Griggs avatar image
Lee Griggs answered ·

It looks like its missing the bump map.

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Lee Griggs answered ·

There is a bump mapping attribute under geometry. Just click on that.

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Sezgin Arslan avatar image
Sezgin Arslan answered ·

Hello @Lee Griggs if you have time and want to take a look the textures can you give me an email and send you the files. So you can have a better look. I really appriciate yoır effort. Please let me know.

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Sezgin Arslan avatar image
Sezgin Arslan answered ·

Hey @Lee Griggs thanks for your effort. So I have added physical sky and it looks better. But still not so close what you think?

also after adding bump maps, in viewport 2.0 it shows model a little weird

Here is files list


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Lee Griggs avatar image
Lee Griggs answered ·

Your lighting is very flat compared to the mental ray render which probably isn't helping the bump map. Try connecting a Physical Sky to a skydome light and see how it affects the shading.

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Lee Griggs answered ·

Can you post the textures or screengrab them in the Hypershade? It's a bump map and not a normal map right?

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Sezgin Arslan avatar image
Sezgin Arslan answered ·

it is better but still not having all the details... What ca be the problem @Lee Griggs


arnold5.jpg (1.3 MiB)
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Sezgin Arslan avatar image
Sezgin Arslan answered ·

thanks @Lee Griggs it look like worked. But still not detailed as mental ray.... Thinking the problem. Maybe the problem is my render settings in arnold renderer. Will upload one more image.


arnold-3.jpg (1.2 MiB)
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Sezgin Arslan avatar image
Sezgin Arslan answered ·

thanks helping out Lee, The tried the bump files but still not have a chance on it. Here is the photo after adding bump files.

Butyou were right there was no bumpfiles attached to model. So I made a 2d bump file seleckted the file named with bump (which there was 2 file just selected one of it...) and attached the bump file to Camera at Ai standard surface shader...

What am I doing wrong ?Thanks for the tutorials I already studied them...


arnold-2.jpg (1.2 MiB)
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Lee Griggs answered ·

Connect the bump texture map to the bump of the Standard Surface.

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