Weird aliasing with PNG files(?)

Hey guys,

I've been noticing that when I load up and display my PNG files in BlitzMax that I get some weird aliasing around the edges. Is this a common issue? Is there a workaround?

No - works fine here. Can you an example?

By weird, do you mean normal? PNG files contain alpha data, which would be responsible for the aliasing you are probably seeing, as BlitzMax uses this data as it should - when SetBlend ALPHABLEND is being used.

Some code, the image in question and what you mean by "weird" will help us clear this up for you.

Are you displaying the image in a lower res than it actually is or is the image not PowerOf2? In this case it could be caused by mipmapping (mipmap is a default flag that is always applied to loaded images as long as you don't set different defaultflags before loading anything)

When you say 'weird aliasing', do you perchance mean a ghostly white halo effect and do you use photoshop?

Thats just what I was going ask ErnieTheEnigmaticElk. Photoshops handling of aliasing is different from most paint packages for some odd reason. I've encountered this before.

Yeah, it's cos PS makes the transparent pixels white when you export a PNG. When any kind of filtering is applied, the transparent white pixels are averaged with the edge of the image to produce the white halo.

Hey guys. Thanks for all of the replies. I apologize for not responding sooner, as I've had finals at the university.

I'll check out the photoshop suggestions!