Jump to content
3DCoat Forums

Roughness painting issues


Recommended Posts

  • Member

I'm having issues while painting 100% roughness over a layer with any roughness in stack. Look at the video for a better explanation. This doesnt happen if i drawa roughness along with color. 

In the video you will also see that the roughness you paint will disappear once you hide the layer beneath.

 

This whole thing might be connected to issues mentioned in these topics: 

 

Edited by Hickz
Link to comment
Share on other sites

  • Advanced Member
21 minutes ago, Carlosan said:

Hi 

apparently you can't draw roughness without color?,

yes you cant

i was testing 2022.06, but cant replicate sorry

2022.06
Image

noticed this yesterday...

i blended a whole mango greens -oranges-yellows and even red... looks lovely all hand painted,

decided some areas looked too shiny...

i had to reblend every bit of the paint... luckily it was just a mango but still

Link to comment
Share on other sites

  • Advanced Member

test progress
Yes, I've also seen this happen.


If it's a bug, it should be fixed, if not, it needs improvement.

It's quite confusing.

Why do we need to enable the Color Channel to paint Rough, Metal?
If you want to express something like fingerprint marks on the surface of an object, you don't need this color value.

Just enable Roughness and you should be able to paint.

 

Edit 1)

Oh, I didn't see the last post by Hickz

@Carlosan
Yes this definitely seems to be a bug.
Painting in this way preserves the layer and doesn't mosaic (break).

Edited by Yousung
Link to comment
Share on other sites

  • Advanced Member

This is a video that implemented Hickz's problem from the beginning.
Tested in 2022.07 version.

As a result of testing so far, it seems that this problem only occurs under certain conditions.
1. Test on a new, empty layer
2. Turn off Color Channel and Depth Channel.
3. Set the Roughness value to 100.
4. Set the Metalness value to 0.

  • Thanks 2
Link to comment
Share on other sites

  • Member

Another thing i noticed is that while painting roughness, the pen pressure doesn't affect the value of the roughness, but the opacity is affected. 

On the other hand, i'm not even sure how to implement it, for example: should smaller roughness values be applied when you press lightly and bigger values when you press firmly? How is that gonna play along with opacity pen pressure?

image.png.c7045183efe92a69e4f93f20ef00c2ce.png

Link to comment
Share on other sites

  • Advanced Member
Carlosan
This post was recognized by Carlosan!

Yousung was awarded the badge 'Helpful' and 1 points.

2 hours ago, Hickz said:

How is that gonna play along with opacity pen pressure?

The Opacity values of Roughness and Metalness should be increased to the maximum.
It works differently from Opacity of Color.

When painting with a Roughness of 38%, no matter how high the pen pressure is applied, only 38% is achieved.
In the case of Color, the colors are superimposed and strong, but Rough/Metal is not.

Experimentally, after painting with the Roughness value set to a high value (I will take an example of 99% because there is a bug now), if I set the Roughness value to 50% and paint again, you can see that the Roughness value is changed to 50%.

The same goes for Substance Painter.

Link to comment
Share on other sites

  • Member
49 minutes ago, Yousung said:

1436469469_bandicam2022-02-2310-32-44-065.jpg.5e3bbf5562ccc729e97bae8ad4ae9236.jpg

Please try this instead.
This is probably the way you want.
Opacity - 38%
Roughness - 99%

It says 'Color Opacity' in the description, but it seems to work like 'Master Opacity'.

What i meant is that there is no need to have the pen pressure switch for roughness then to begin with, if only the roughness that is set in the slider is gonna be applied despite whatever pressure you use, since only master opacity is considered.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...