[Therion] Semi-transparent rock borders

[Tarquin Wilton-Jones]

> I have some closed rock borders that are opaque as expected when viewing 
> my PDF file in Adobe Acrobat and FoxIT but are semi-transparent in 
> Okular and Atril.
> 
> Any suggestions on how to make them really opaque (on all PDF viewers)?

Translucency (which you only get on rock borders when using 
"smooth-shading off"), does not work in all PDF viewers. There is 
nothing you can do about that, unless you are able to submit a code 
patch to the PDF viewer application.

https://therion.speleo.sk/wiki/contrib:externalviewers

Sorry, I know that's not what you wanted to hear.

Tarquin