I am writing a game using DirectX, and I want to know how I can make the BMP files I use for graphics look better (i.e. I want them to be less "blocky"). Is there any software out there that can render my 2D bitmaps? What else can I do?
You could try enlarging them, and then anti-alias the enlargement. I would recommend a factor of 2 for the enlargement. You can do this in most imaging editing tools. Mind you, this will also increase your bitmap size by a factor of 4.