RetroArch Arcade Borders: Understanding Aspect Ratios and Integer Scaling

In RetroArch, achieving the perfect arcade experience requires a deep understanding of aspect ratios and integer scaling. With the wide range of resolutions and game consoles available, it's essential to respect the original format of each game while also ensuring optimal image quality.

One key consideration is the 4/3 format, which was commonly used on older monitors. To maintain this aspect ratio, we must use Integer Scale, especially when playing games with non-standard resolutions. For example, the Sega Master System (SMS) has a resolution of 256x240, but only 256x192 pixels are actually used.

When activating Integer Scale, the resulting size is 1280x960, which scales the game to 1440x1080 on a 1080p screen. This is crucial for maintaining the original aspect ratio and ensuring that games are displayed in their intended format.

The issue of non-square pixels arises when playing games on platforms like NES, which used CRT TVs with non-square pixels. To achieve pixel-perfect rendering, we must use Pixel Perfect or Integer Scale to ensure scanlines are rendered correctly.

In some cases, games may be designed for a specific aspect ratio, such as the 4/3 screen of an arcade monitor. For example, Double Dragon was intended for play on a 4/3 CRT in full-screen mode. By using the correct aspect ratio and integer scaling, we can achieve a true 4/3 representation of the game's original screen.

In conclusion, understanding aspect ratios and integer scaling is crucial for achieving an optimal retro gaming experience with RetroArch. By respecting the original format of each game and using the correct scaling methods, we can enjoy our favorite classic games in their intended glory.

Retroarch arcade borders