"Ah-- sorry, I didn't read your message carefully. I downloaded your jpg and used Gimp to create a png with alpha. I selected the white using a magic wand selection tool, added an alpha channel to the image, and used their…"
"If you mean, "how would a conversion program work?", the answer is any way we like. We could run an automatic conversion on all the legacy decals in the model and replace color with alpha masking. We could also create an…"
"That's very kind of you to offer, though it would still mean opening thousands of CAD blocks and saving them in the new format.
Just so that I understand the process, how would I convert this jpg file to contain the correct alpha channel?