Sprites, PNG and Alpha channel.

Miscellaneous Forums/General Discussion/Sprites, PNG and Alpha channel.

Not sure this is the right forum, so feel free to move/delete my post if necessary.

I'm trying to create sprites with an alpha mask and save it to a png. My sister owns photoshop 7.0 so she tried helping me out. We cant figure out how to save the alpha channel using png format in photoshop, the 'add alpha' checkbox in the save dialog is grayed, any help?

Also

I tried doing it using The Gimp. Now, i have been able to create and save my png using alpha channel (although i cant reproduce it, it wont let me draw directly in the alpha channel, and i dont remember the 1000 things i tried before it worked). My problem is, i have 10 other sprites that have to use the same alpha channel, anyone know how to copy the alpha from one picture to another using the gimp?

(I've tried looking in photoshop/gimp website but couldnt find any help, hence why i'm asking here cuz i suppose many of you use such tools with great mastery)

Thanks,

Smurftra