Does anyone know why the Dirt node does not respond when connected to bump or normal?
The previous version was working
Is this a bug?

Are you sure?
Which exact previous version?
This is a core limitation, and shouldn't work in any versions.
You should need to have proper unfolded uvs, then use ...

Does anyone know why the Dirt node does not respond when connected to bump or normal?
The previous version was working
Is this a bug?

I chosse PNG just because EXR file is too big and After Effect use EXR too slow.
Thank you for your answer. And I 'll choose the EXR

I use 2020.2.3
And as julianc said that octane always crashes when use denoise in LDR buffer type / output-srgb color space.
I just want to know how can I save the 8/16 bit png with the same color like octane live viewer windows.
The following output-srgb picture using the SETTING，but different with ...

I also encountered the same problem

Thanks,I'll try the Chaos node.

Recently，I find 3dmax 2021.2 update a osl named 'Bitmap random tiling' which can solve texture repetition.
And I extracted the OSL from 3DMAX，but can't compilation and show something wrong.
I don't know much about OSL.Can anyone compile the OSL to work with OCTANE?
This is the Bitmap random tiling ...