Question on saving png?

Hi all
I would like to know what type of png you use - interlaced or normal? And for what purposes one might be good for SL and the other not
Thanks a lot!

I just use "none" or non interlaced. I've never had any issues with that setting And I use PNG's for any texture that requires any transparancy. I use .tga files for non-transparent textures.

It won't make any difference. As soon as you upload the file to SL, it becomes a JPEG2000. It is no longer a PNG, so any and all settings that are unique to the PNG format (including its interlacing scheme) will be gone.

So you know, interlacing is primarily used to make the image seem to display faster on web pages. If you've got a slow connection, or if the image is very large, you won't receive the whole file at once. It will trickle in, bit by but. If the image is non-interlaced, you'll need to wait for the whole thing to load before you can see it. But if it is interlaced, it will "fill in" gradually as you receive more and more pieces over time. You'll get a small percentage of the pixels at first, with interpolated colors in the empty space in between. Then, with each new timestep, you'll get more and more of the real pixels until you've got them all.

SL's JPEG2000 implementation does something similar by creating a series of pre-stepped versions of the image. This is why when you first encounter a new texture in SL, it looks blurry at first, then gets a bit more clear, then a little more, then completely focused. If it weren't for the stepping, you'd have to wait until you receive the whole texture before you'd see anything at all. And as we all know, sometimes it's quite a long time before we get the final version, and even then, sometimes it falls out of cache, and we have to wait again.

Anyway, as I said, the PNG interlacing will not make any difference whatsoever to the JPEG2000 behavior in SL, so don't worry about it.