kiss_sdl : Very lightweight library where the rendering is performed by SDL and SDL_image. So I need to modify the library to use SDL_gpu, quite a bit of work. Developed by one person, so it could be buggy.
After all these research I decided to simply do a small command line tool myself something very small, where I can warp, get an object and change a variable.
All that said without even once trying it. The last change was made more than 6 months ago now, and no one has found any bugs since then. And by GitHub statistics i estimate that it has been downloaded at least 10 times in a day.