Added better way to get filename extension for GPU_SaveImage().
Added better way to get filename extension for GPU_SaveImage().
weimingtom/sdl-gpu,weimingtom/sdl-gpu,DataFighter/sdl-gpu,neozero497/sdl-gpu,DataFighter/sdl-gpu,neozero497/sdl-gpu,DataFighter/sdl-gpu,weimingtom/sdl-gpu,neozero497/sdl-gpu