ok - now I see that I can use PNG's for alpha masked images and they give a smaller file size.
I also see that for small button images (256x128) it's best to turn off mipmapping and blur the image in photoshop to get the right sharpness/fuzziness balance.
Larger images can be left unblurred and mipmapped.
I also see that for small button images (256x128) it's best to turn off mipmapping and blur the image in photoshop to get the right sharpness/fuzziness balance.
Larger images can be left unblurred and mipmapped.