As long as you are in in alpha blending mode:
32 bit png and tga files will display with alpha channels correctly. An example of an image with alpha channel can be found here: blitzmax/samples/breakout/media/B-Max.png
SetBlend ALPHABLEND
32 bit png and tga files will display with alpha channels correctly. An example of an image with alpha channel can be found here: blitzmax/samples/breakout/media/B-Max.png