Realistically, how many 2048x2048 textures can I have before the game requires too much ram or video ram or something?
It really depends on the device and texture’s bpp. In my game I have a total of 50 1024x1024\ textures.\ My\ Galaxy\ S\ can\ only\ handle30 at the same time, while my friend’s S3 can handle all textures without a problem (RGBA8888 textures). If I reduce the bpp of the images (RGBA4444), then my S can hold all 50 textures in its memory.