I would like to know, if it is possible to create mutable image with transparency?
I would like to have either empty transparent image on the start
or ability to draw transparency on image. I would prefer second option.
I know I can acheive the same effect by using drawPixels, but that is much slower than by blitting Image.
I found the problem (and new one too).
It seems that you have to use DirectGraphics.drawImage to draw created image. If you use Graphics.drawImage, transparency is ignored.
It would be good, if somebody added that to the documentation.
Now, on the other hand, DirectGraphics.drawImage is much slower than Graphics.drawImage (in case of transparent mutable images, didn't check other combinations), and is, as such, useless to me.