Hello All,
I am also having an issue with masking. This occurs in Civil 3D 2016, and only with the DWGtoPDF driver. Adobe PDF driver works fine.
What is working is the "old" way we would mask text. This would be to use TEXTMASK, set the mask type to SOLID, set the solid colour to 255. Then in the CTB file, we would set the screening of 255 to 0.
What no longer works (but was fine in 2014) is the Background Mask option that can be set in the properties of a piece of MTEXT. Currently, I have a piece of text with Background Mask on, Border Offset Factor set to 1.500 and Fill Colour set to "Use drawing background colour". When using DWGtoPDF, this will plot solid black boxes covering the MTEXT instead of invisible masks.
Going forward (maybe help a few with a temporary solution), I found that I can set the Background Mask Fill Colour to 255, and use my old CTB where 255 is screened to 0, and this works.
HOWEVER - this does not help me with all the existing drawings that have Background Masking. These will all require the Background Masks to be modified prior to plotting, or just abandon the DWGtoPDF, which would be unfortunate as in 2014, I was starting to prefer it to Adobe Acrobat, and not everyone is going to have the option of a second PDF driver.
If Autodesk or any users have some tips on how to get the old functionality back, let me know!! If it is truly an issue, and not just a buried setting that is changed by default, I hope this will make it in to SP1. I know I will have PDFs going out the door where someone misses a mask somewhere and a black box gets published!
Also, what defines "Background Colour"? I check "Use Drawing Background Colour", and get a black box. Is "Drawing Background Colour" definable??
Thanks all!