How Do I Make This? - Printable Version

How Do I Make This? - Printable Version

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+--- Thread: How Do I Make This? (/Thread-How-Do-I-Make-This--4830)

How Do I Make This? - green61 - 09-29-2020

I want to use images like this, the black and white images, as alphas for ZBrush. I can't find out how to make them. Can you make them in GIMP? https://www.textures.com/download/3dbrush0089/127532

RE: How Do I Make This? - Krikor - 09-30-2020

(09-29-2020, 09:07 PM)green61 Wrote: I want to use images like this, the black and white images, as alphas for ZBrush. I can't find out how to make them. Can you make them in GIMP? https://www.textures.com/download/3dbrush0089/127532

I didn't log in to the site, so I couldn't download the textures available on the site.
Using a low resolution copy of the image from the link provided I was able to create some brushes.
[Image: spSGmAJ.png]

RE: How Do I Make This? - rich2005 - 09-30-2020

Big caveat, I have a Zbrush in my archive but it is from 2006, so just my two-euros worth.

All the resources in that version are psd files. This one of the 'alphas' Greyscale 16 bit integer.

[attachment=5005]

Nothing special to make one of these, fill with black, paint in with white, maybe apply a blur if required.

My advice is pull one of the alpha files from your copy of zbrush and open it in Gimp. Making a new image should use the same properties. Otherwise use `Image -> Precision' and set 16 bit integer there.

Exporting:
Gimp 2.10.20 can now export a 16 bit PS psd file. Still a bit buggy. The first export is ok, but re-exporting to the same file generates errors. If that happens, save as a Gimp .xcf, close and reopen Gimp, open the xcf and export as a psd. As far as I know this has been fixed in the next release. The 16 bit greyscale psd I made did import in that old Zbrush.
Tiff can be a problem. I would avoid it. There is a problem with the way Gimp exports. That old copy of zbrush does not recognise a Gimp tif 8/16 bit - compressed or uncompressed. (Zbrush is not alone the RGB-CMYK converter I use flags up these errors as well.) The only thing you can do with tiff is try and see what happens.

RE: How Do I Make This? - green61 - 09-30-2020

Thanks for the help. To me the "Alphas" look like X rays. I am going experiment with them in GIMP and see what I come up with.