I am trying to test my 640x400 game and the edges of the pixels look blurred at full screen rather than being crisp and clear. I've had this problem before at 320x200, I assume because, as I have read in some other topics, some graphics cards don't support that resolution so well anymore, and have solved the problem with the 2x nearest neighbor filter. If boosting the resolution of a 320x200 game to 640x400 fixed the issue, I don't know why a naturally 640x400 resolution doesn't work. Putting 2x nearest neighbor on with this game produces an error that says that graphics mode is not supported. What am I screwing up here, and how do I fix it so my art looks clear in fullscreen?