Invert Textures?

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Invert Textures?

Postby kapitastic » Wed Nov 07, 2018 3:43 pm

kapitastic Wed Nov 07, 2018 3:43 pm
Hello again.
I'm having a problem when I try to invert a texture in octane.
As you can see, I've tryed with two different textures, an octane native noise and a rgb texture .png file.
I don't really know whats going on here, so any aclaration will be highly apreciated hahaha...
By the way, octane invert for the noise texture doesn't flip the texture horizontally.


Images:

Image

Image

Is there a specific way to do this? an operation node or something similar? I hope you can give me a hand with this :)

Thank you!
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Re: Invert Textures?

Postby Xhed » Thu Nov 08, 2018 9:47 am

Xhed Thu Nov 08, 2018 9:47 am
I would suggest posting this question in the General Discussion forum, as it concerns Octane itself more than it does the Unity integration.
- Rick
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Re: Invert Textures?

Postby bepeg4d » Thu Nov 08, 2018 11:59 am

bepeg4d Thu Nov 08, 2018 11:59 am
Hi,
I have tried in Standalone 4RC7, but the Invert option seems to work as expected to me:
1A58B78A-25C7-4FF1-93E3-DCCDFA0B35CA.jpeg

DEF539B3-3CA9-4186-A0ED-A521D630DE00.jpeg

5293C567-A2C9-4710-8B3C-E42669FCBCBF.jpeg

C2438525-1E9D-42D9-9C36-E04752C3C146.jpeg

ciao Beppe
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Re: Invert Textures?

Postby kapitastic » Thu Nov 08, 2018 3:08 pm

kapitastic Thu Nov 08, 2018 3:08 pm
Thank you for testing it in the standalone version, so the problem seems to happen only in unity octane or what? Should I post this thread in general forum as xhed sugested?

Any idea?

Thank you again :)
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Re: Invert Textures?

Postby ChrisHekman » Fri Nov 09, 2018 1:05 pm

ChrisHekman Fri Nov 09, 2018 1:05 pm
kapitastic wrote:Thank you for testing it in the standalone version, so the problem seems to happen only in unity octane or what? Should I post this thread in general forum as xhed sugested?
Any idea?
Thank you again :)


These are two different behaviors.
For the noise texture, I suspect the explaination is that the gamma is applied after the invert. So if you have a gamma of 1, you will get the behavior you expect.
In your example it is 1.5

The normal texture has a similar problem, but in reverse. The gamma is applied to the texture first, and then the invert is applied.
If you set gamma to 1, you get similar results as photoshop.

This is an Octane feature, so general discussion would the right place to ask about it.
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Re: Invert Textures?

Postby kapitastic » Wed Nov 14, 2018 11:21 am

kapitastic Wed Nov 14, 2018 11:21 am
Thank you, I see the problem now, thank you very much for answering!
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