Material Problem - Bump crazy high

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Material Problem - Bump crazy high

Postby Rogurt » Mon Nov 13, 2023 12:30 pm

Rogurt Mon Nov 13, 2023 12:30 pm
Hi all

I am new to octane but experienced in other engines (cycles, mawell, vray). When I setup universal materials with bump I need to dial the bump WAY! down get reasonable results (either via imageTexture/Power or using Octane gradient).
So I imagined loading a material from online db and studying settings would be sensible thing to do. But the downloaded material looks totally different from the DB preview. I used the material_preview_sceme.c4d from "v3_sample_scenes.zip" (file dates mostly around 2016).

My questions:
- could I expect to use DB materials looking the same as in the DB preview image? is this maybe a scaling issue? how can I get this to work?
- can someone tell me what range "normal" bump values would be like? 0,00001 rather than 0,01?
- how would you import/connect/treat an b/w bump image before feeding to the bump input
- can one "solo" view a node like in cycles4D?

Cheers
Rogurt
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Screenshot 2023-11-13 134018.jpg
Win7 64bit SP1; i72600k; 8GB Ram; NVidia GTX 560Ti
C4D R13 Studio; Maxwell 2.6; Octane 2.57
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Re: Material Problem - Bump crazy high

Postby bepeg4d » Tue Nov 14, 2023 8:37 am

bepeg4d Tue Nov 14, 2023 8:37 am
Hi Rogurt,
welcome.

About Bump, it has changed in 2023.1 SDK, now there is a new Bump height parameter, while in the past it was controlled by the Power value of the texture.
To have the same behavior, you need to go to the Basic tab of the material, and change the Compatibility mode to 2022.1:
IMG_0295.jpeg


About Solo mode, right click on a texture node in Node Editor, or use the "D" shortcut:
IMG_0296.jpeg


ciao,
Beppe
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