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Rendering with Arnold in 3ds Max using the MaxtoA plug-in.
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What happened to normal map rendering in 2019?

8 REPLIES 8
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Message 1 of 9
gartien
398 Views, 8 Replies

What happened to normal map rendering in 2019?

All my models get black normal map edges at certain angles, almost like a fernel effect. It only happens when I hook up a normal map to my model, not when just using Maya Soft Edge shading. When I open up the exact same scene in Maya 2018 it renders perfect!
What happened?

Here is 2019 and 2018:

5256-problem2019.jpg5257-problem2018.jpeg

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8 REPLIES 8
Message 2 of 9
lee_griggs
in reply to: gartien

Are you using the normal_map shader or the Maya bump node?

Is the color space set to RAW in the file node?

If that doesn't work can you upload the map somewhere?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 9
gartien
in reply to: lee_griggs

My process was, that I clicked the checker next to the bump/normal map input in the material, and bound a regular maya file node to it, so it created the regular bump node between the file node and the material. This is how I have done it before and it has always worked, except in 2019. Does the new version have to use Arnolds own normal node?
And yes it is set to raw, and as you can see, the same scene in 2018 displays it correctly, and all I do is open the scene in the 2018 version.

Message 4 of 9
lee_griggs
in reply to: gartien

Are you using Tangent Space Normals?

5312-1575546816558.png


>Does the new version have to use Arnolds own normal node?

No, just curious.

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 5 of 9
lee_griggs
in reply to: lee_griggs

I don't see any bump in the 2018 render btw?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 6 of 9
gartien
in reply to: lee_griggs

Yes it does use tangent space normals, and yes it's not a fine detail normal map, it really just smoothes the model. I'm going for a cartoonish feel, så high frequency maps wouldn't do

The normal map is baked in Substance Painter, and it's definitely not empty, or just showing vertex shading.

5325-normal-map.png

This is a screencap of the normal map, as the 4k map was too big to upload here

Message 7 of 9
lee_griggs
in reply to: gartien

Have you tried to adjust the Arnold attributes in the Bump node?

5313-1575553684893.png


Is the original 8-bit?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 8 of 9
gartien
in reply to: lee_griggs

It is 8 bit yes, and I have flipped the channels on and off. From what I could see, and what I've done in the past, is to export and OpenGL normal map from Substance, and then turn off Flip R and G channels. I don't think sliding the depth is gonna do anything

Message 9 of 9
gmoranLVEYV
in reply to: gartien

I'm seeing the same thing in my renders in Maya 2020. Is this a known issue?

6302-1584153779173.png

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