Does a png use memory equal to its size?

[Christian Knudsen]

But there is also a way to use compressed textures with opengl without decompressing them. Do a search on GL_ARB_texture_compression and/or s3tc (http://www.gamedev.net/reference/pro...erpt/page2.asp)

That's very interesting. I'll play around with this and see how much memory I save. Thanks!