topic Re: Invert ramp values in Maya Shading, Lighting and Rendering Forum

Invert ramp values

PuChiNgBaLLz — Tue, 07 Dec 2021 21:02:05 GMT

Hi there, i'm trying to use a ramp map as a unique node to control 2 values of an Arnold aiStandardSurface material, this is what i have and the red draw is what i need, so this allows me to just modify 1 ramp node and affect multiple inputs, which node do i need to use there or how can i get an inverted value from the same ramp?

Re: Invert ramp values

hamsterHamster — Tue, 07 Dec 2021 21:13:33 GMT

I believe, you can use aiColorCorrect node with Invert switch enabled.

Re: Invert ramp values

PuChiNgBaLLz — Tue, 07 Dec 2021 22:20:22 GMT

I've tried and worked but in the Alpha section of the aicolorcorrect, btw, is there any chance to tweek the black and white tones in the same aicolorcorrect or i need to connect it to another aicolorcorrect? The current ramp is white in the center & black outside, the invert already done just swaped the values, now i have to correct this since is too rough, too White.

Re: Invert ramp values

hamsterHamster — Tue, 07 Dec 2021 23:37:05 GMT

Why wouldn't you connect

ramp1.outColor to aiColorCorrect2.input, then

aiColorCorrect2.outColorR to Esciera.specularRoughness

and invert the color, like I shown in my picture before?

Besides, all the multiply, add, exposure etc. attributes there are to correct the output.