I'm looking for a good tool for texture packing. Here are my "like to have" features:

(1) I'd like to point it at a directory, yell "GO!" and let it work out generating multiple textures for me if necessary. Most of the texture packers I'm running into (Zwoptex, code 'n' Web's Texture Packer) require I import all the images for a single texture and let it work out the best layout. Which is OK if you need the fine-grained control, but I don't want to be responsible for the labor. Maybe the pro versions of these tools have this, and I'll gladly pay for them, but I'm not going to pay until I know they do.

(2) Command-line integration.

(3) If possible, it should run on a Mac. I'm currently targeting a Mac, and although I have Crossover to run Windows programs on the Mac, it's a little wonky.

So far I'm running up empty for a tool that has all three of those (or even the first two). Zwoptex and Texture Packer have the last two, but that first is fairly important to me. Headsoft's Texture Packer has the first but (as far as I can tell) not the second and definitely not the third.

If anyone knows a tool that covers at least (1) & (2), I'd be much appreciative.

might be useful to know from what format (bmp,tga,jpg,png...?) to which (jpg,dds,...?) you want to convert, and what compression(jpg,dxt,3dc,pvrtc...?) you want.

Formats and compression aren't terribly important. I have plenty of command-line conversion tools laying around I can use.

Best case scenario: will convert directly from PNG to PVR. But PNG to PNG is just as fine.