Live Procedural Texture No Longer Visible after Color Format Change?

[Gemini80]

Hi All!

 

I changed a project's color format from RGB8 to CMYK yesterday because I want to print the design and just noticed a metal texture I had created before the color format change is no longer visible - the layer is there but the texture is not showing.

 

As a test I opened the original RGB8 file, copied the Live Procedural Texture and was able to paste it into a blank project with RGB8 color format - when I did the same thing but pasted the Texture into a CMYK color formatted project the Texture did not show...

 

Any thoughts as to why or what I can do to get it back?

 

Thanks!

[Lisbon]

21 hours ago, Gemini80 said:

...copied the Live Procedural Texture and was able to paste it into a blank project with RGB8 color format - when I did the same thing but pasted the Texture into a CMYK color formatted project the Texture did not show...

If I understand correctly, you are trying to use a Live RGB Procedural Texture in a CMYK workspace.
Im afraid that is not possible.
Even the user interface changes when you go from RGB to CMYK.

And if by chance you manage to keep one RGB procedural texture after converting to CMYK. Most likely it won't work.
I dont know about v2 but in A.Photo v1, while in CMYK, i don't even have access to my RGB procedural textures.
They are incompatible.

So, if you intend to switch to CMYK, I'm afraid you'll have to merge the procedural texture first.

[NotMyFault]

As Lisbon explained, PT filters are bound to one specific color space: GREY, RGB, LAB, CMYK. The bit depth does not matter, a PT filter in RGB mode works in  RGB/8, RGB/16, RGB/32 in theory - but the formulas might be sensitive to bit depth, and especially to linear vs. gamma encoding.

If you convert the document to different color format, the PT filter becomes inoperable. If you convert back, it will get operable again. 

The only way to use a different color model from document model is curves, levels, channels mixer adjustment, and some destructive filters like Apply Image. These actually allow to choose the color format, Affinity will convert automatically, but only for that adjustment / filters.

Unfortunately the PT filter has no option to choose a colour model.

Affinity will show only those presets which match the document color model.  But you can open another document, and copy paste inoperable PT filters between documents.

 

Please note that there are unfixed bugs in V2.0.3 affecting PT filters:

• In CMYK, the reserved variable for K channel does not work. You can't read the K channel.

[Gemini80]

Thanks to all who posted - I figured this out the hard way...bummer.