Community
Arnold General Rendering Forum
abbrechen
Suchergebnisse werden angezeigt für 
Anzeigen  nur  | Stattdessen suchen nach 
Meintest du: 

Using Texture Maps with Specular Roughness

12 ANTWORTEN 12
Antworten
Nachricht 1 von 13
sketchguy
14240 Aufrufe, 12 Antworten

Using Texture Maps with Specular Roughness

Hello!, I'm wanting to use grunge/scratch/fingerprint texture maps to break up the Specular Roughness in the aiStandard Shader, similar to this:

145-image001.jpg

I’ve been doing some tests, but not getting the expected results. The texture map i’m using is a 16 bit Grayscale image. I also converted it to an RGB image and connected the R channel to the Specular Roughness, but still not getting the expected results. Is there something obvious i’m missing?

First image is basic shader with some Roughness dialed in:

Second image is with the R channel of the texture map assigned to Specular Roughness. I'm not getting the desired results.

147-arnold-roughness-error.jpg

Any suggestions fully appreciated!

Thx,

-Steve

Tags (2)
Beschriftungen (2)
12 ANTWORTEN 12
Nachricht 2 von 13
Stephen.Blair
als Antwort auf: sketchguy

I tried with a few random textures and they all affected the specular roughness in my test scene.



// Stephen Blair
// Arnold Renderer Support
Nachricht 3 von 13
Anonymous
als Antwort auf: sketchguy

Have you set the Roughness map to Linear instead of sRGB?

Nachricht 4 von 13
sketchguy
als Antwort auf: Stephen.Blair

Hey Stephen, could you kindly post a screen shot of your Hypershade window with the aiStandardSurface shader selected, along with an image? I'd love to see what i'm not doing correctly. Thx!

Nachricht 5 von 13
sketchguy
als Antwort auf: Anonymous

Hey Dade, I can't seem to access The Color Space section in Image Attributes in the aiImage node when it's connected. When I delete the connection, I see four different Linear options - selecting each one, reconnecting and rendering doesn't seem to change anything that much at all.

Nachricht 6 von 13
lee_griggs
als Antwort auf: sketchguy

Hi Steve, have you tried adding a remap or Range shader in between the texture and the Standard Surface.

I did a recent test here.

Lee Griggs
Arnold rendering specialist
AUTODESK
Nachricht 7 von 13
Slava_91
als Antwort auf: sketchguy

Hi Steve!
Tried to connect luminance node on and graph network

Nachricht 8 von 13
Anonymous
als Antwort auf: sketchguy

I find that I need to put the Spec Roughness texture in the R channel of the texture file, with pure black in the Blue and Green channels. Then when I connect the spec rough map up via the r channel it works fine.

Nachricht 9 von 13
koostic.moloco
als Antwort auf: sketchguy

I dont have a bunch of settings in aiRange. Like Contrast Pivot and others... Nedd help.

4153-снимок-экрана-2019-07-12-в-95703.png


Nachricht 10 von 13
lee_griggs
als Antwort auf: sketchguy

Have you updated your plugin?

Lee Griggs
Arnold rendering specialist
AUTODESK
Nachricht 11 von 13
koostic.moloco
als Antwort auf: lee_griggs

I use Maya 2018. How can i update plugin? where? sorry, i am new in Maya, just study. I would be very grateful for the details

Nachricht 12 von 13
koostic.moloco
als Antwort auf: lee_griggs

I use these. Will try to update. Thanks a lot

4154-снимок-экрана-2019-07-12-в-101131.png

Nachricht 13 von 13
koostic.moloco
als Antwort auf: lee_griggs

You are you a wizard. Thanks a lot. Updated it. Works nice.!

Sie finden nicht, was Sie suchen? Fragen Sie die Community oder teilen Sie Ihr Wissen mit anderen.

In Foren veröffentlichen  

Autodesk Design & Make Report