Anti-aliasing



Anti-Aliasing is the action preventing aliased images: Images with jagged edges. Most commonly seen in Vector Graphics. This can be done using multiple methods:
 * Super-sampling: The image is first rendered at a high resolution. Then that image is downscaled. If the image is downscaled using a good algorithm it will appear smoother.
 * Multi-sampling: Render the same scene at slightly different angles or offsets. Then check the differences between the pictures to detect edges. Using the edge info generate a anti-aliased picture.

Where and Why it is Applied
Many people prefer to remove aliasing because makes the result look more natural or complete. Because image rotation often increases aliasing, especially in Game Maker, it becomes handy to fix ugly transformation artifacts. Unfortunately Game Maker 7 does not support anti-aliasing, but does allow for color interpolation to be applied. This effect is similar to anti-aliasing, and can be enabled from the Global Game Settings.