Jump to content
3DCoat Forums

Clip Mask Layer doesn't work with Cavity RGB


phoenixart
 Share

Go to solution Solved by phoenixart,

Recommended Posts

  • Advanced Member

I'm testing the Clip Mask Layer function, and it works fine if I create a new layer to use it as a mask, and I paint on it.

I would expect it to work when linked to the Cavity RGB layer, but in that case I see no change in the layer I'm trying to mask out.

For instance, in this screenshot, the dark area is the result of the mask I painted on the layer "Mask":

image.thumb.png.407fd635b38355890f6c891ad0beb24e.png

But then, if I link the Cavity Map instead, I don't get any variation:

image.thumb.png.94f0c01fdedf8680566cd9329fba4c31.png

And if I invert the Clip Mask, the whole layer is hidden:

image.thumb.png.b28e278849a2800090930225daf354e2.png

I tried using the AO layer as a mask, but I guess the contrast in the AO is too subtle to actually create any usable value for masking.

I thought I could use the Cavity map as a mask in the Clip Layer as well. Is that not the case?

Edited by phoenixart
Link to comment
Share on other sites

  • Advanced Member

So, I tried with a copy of the AO pass. I increased the contrast, blurred the layer, in order to get a decent degree of gray value to push the mask a little more.

Here's the modified AO:
image.thumb.png.0fac748adec7def09744a3074e7d64af.png

And still nothing:

image.thumb.png.0827985cdd66aad5acb94d3582ae071d.png

Shouldn't this work?

Not sure what I'm missing, though I seem to remember when I tried an older 3d Coat trial, this workflow worked fine.

Link to comment
Share on other sites

Is not working as mask, confirmed

Source...

Tieguaili: clip masks in coat are alpha masks, not greyscale masks
[4:21 AM]phoenixart: oh!
[4:22 AM]phoenixart: so, there's no way to use a simple grayscale layer, I see now
[4:22 AM]phoenixart: that's quite a limitation
strange, because the Cavity RGB map already works for the smart materials
[4:22 AM]Tieguaili: if you want to use greyscale you're gonna have to send layers out to an external editor and change luminance to transparency
[4:22 AM]phoenixart: got it
[4:23 AM]Tieguaili: cavityRGB mask isn't a clip mask 
[4:23 AM]Tieguaili: neither are curvature masks or anything else
[4:23 AM]Tieguaili: they're basically gradient maps

Link to comment
Share on other sites

  • Advanced Member
  • Solution

@Carlosan

I added a temporary solution to the conversation above:

phoenixartToday at 12:55 AM

A couple of workarounds for what I'm trying to do.

The simplest, is to change the blending mode of what I wanted to use as a clip mask, to multiply.

The other method is to use Align Colors.
So, now I can start from an AO pass, paint on it if I need to, and use it sort of as a curvature map without going the Smart Materials route.
 
Image
Edited by phoenixart
  • Thanks 1
Link to comment
Share on other sites

  • 4 weeks later...
  • Member

I think I'm trying to do something similar...

I have a wood texture, but I want to desaturate the lighter parts of it.  At first I desaturated it in 3DCoat, and adjusted the contrast and brightness to get a good 'mask' layer. However nothing I tried would apply it as a mask. I eventually remembered that clipping masks in 3DCoat work off the transparency layer, NOT greyscale images. I exported the colour layer, opened it in Krita, used the 'Colour to Alpha' tool to convert the light areas to transparent, and leave the darker areas opaque; then re-imported this into 3DCoat to use as my clipping mask.

I'm not expecting 3DCoat to switch to using greyscale images as clipping masks, that appears to be a large change which has been requested before. However, I think a simple script on the layers right-click menu which basically turns greyscale images into layers with varying levels of transparency (The standard seems to be white to fully opaque, black to fully transparent, and varying levels/gradient inbetween) would be very helpful, and would mean users no longer need to jump outside of 3DCoat on such occasions.

Cheers

Derek  

Edited by DMG
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...