Material Graph : can't assign color adjust card to bump channel

[BenG075]

Hi,

I am exposing here an issue (maybe it is not), but when I try to assign the Color adjust card output to the bump channel of my material it doesn't...
I would like to use the same texture map as a starting point then adjust it to enhance its application according to the channel I want (Specular, Bump...). Please look snapshot attached.

Thanks for your help !

Benjamin

[Chad Holton]

Based on your sample screenshot, the image used for bump mapping is basically converted to B&W and you wouldn't need color control.

[BenG075]

Hi Chad, Thanks for feedback

I fact I want to use a modification node to increase the contrast between the white and the black area... keeping the same mapping parameters...
But it seems that's impossible here...

[richardfunnell]

My suggestion is to simply copy/paste that node in your Material Graph (essentially duplicating it), and plugging it in where it needs to go. The "sync" option should be checked allowing you to move/scale as needed, but you can then adjust each texture or parameter as needed.

This usually leaves my material graphs a little cleaner, instead of double or triple duty-ing them. You may see issues when using the same texture in too many nodes.

[INNEO_MWo]

The limitation is that you can't assign an utility node to the bump channel of a material (but "backside color mask" utility node if experimental features are on)

maybe one release we get this control.

For now you can copy your texture file, change it with a graphic tool (like Photoshop or something similar) and use refresh in KeyShot to effect the bump.

[Chad Holton]

Hi Chad, Thanks for feedback

I fact I want to use a modification node to increase the contrast between the white and the black area... keeping the same mapping parameters...
But it seems that's impossible here...

Hi Benjamin,

I haven't tested to see for sure but would think adjusting the bump height parameter would be the equivalent.

Chad