That particular one looks to me like it might be painted on.
I would recommend looking into the option of using a sandblaster to etch the designs. The general process is to cut the design on the vinyl cutter using sandblasing grade vinyl (not the stuff we have in Creative Arts), then apply it to the glass and weed the negative space you want etched. If you want to, you’re able to wash the glass without removing the vinyl mask, then follow it up with a coat of paint.
For reference, here’s an idea of what you can expect to see using this method.
https://www.google.com/search?q=sandblasted+glass+panels&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiciYbF6fzTAhWhwFQKHY-ZAJoQ_AUICygC&biw=1023&bih=634