(F12) screendumps in .png format https:// forum support for .bmp ?

[Volutar]

Daiky, there is an alternative to libpng, without any dll/so and zlib... https://lodev.org/lodepng/

[moriarty]

+1 

[luke83]

Doesn't UFO2000 use PNG ? Will Openxcom be compatible with Ufo2000 Items ?  What Program do they use to save it all ( someone here must of used UFO2000 before )?

[Volutar]

LodePNG library work like a charm. Just tested it.

[Daiky]

LodePNG library work like a charm. Just tested it.

Interesting, the developer seems to be from Belgium even But I don't know him :p

[Volutar]

It's quite easy to use. The only thing I was puzzled with is... getting png info on alpha channel before loading, in order to load in in proper form - RGB or RGBA. Of course it was solved.

[Volutar]

I've added PNG functionality into my dead project. Textures are in PNG, and screenshots are in PNG as well. With quite an ease...

[SupSuper]

Daiky, there is an alternative to libpng, without any dll/so and zlib... https://lodev.org/lodepng/

Wow that was surprisingly handy, I implemented PNG screenshots with just a few lines.

And once the required libraries are linked into openxcom (I thought it was only zlib and libpng?) then it's only a small step to load sprites from PNG 

Loading the graphics into OpenXcom isn't the hard part (SDL_image can do loading fine, it just can't save for some reason), it's just externalizing all the resource loading stuff, and you saw how long that took just for the ruleset.