Retro Handheld Integer Scaling Visualizer
Why does GBA look blurry on 4:3 screens? Why do classic SNES games shimmer when the screen scrolls? The culprit is non-integer pixel scaling. Use our real-time interactive canvas visualizer below to inspect exact pixel multipliers, screen fill percentages, letterbox black bars, and shimmering risks across all 24 handhelds.
🖥️ Real-Time Display & Scaling Simulator
Pick a retro console and handheld screen to view the simulated physical display borders and integer math.
Popular Handheld Screen Resolutions & Optimal Integer Multipliers
| Display Spec | Aspect | GBA (240x160) | SNES (256x224) | PS1/N64 (320x240) | Top Handheld Example |
|---|---|---|---|---|---|
| 640 x 480 | 4:3 | 2x (480x320, 50% fill) | 2x (512x448, 75% fill) | 2x (640x480, 100% PERFECT) | Anbernic RG35XX SP, Miyoo Mini+ |
| 720 x 720 | 1:1 | 3x (720x480, 67% fill) | 3x (768x672 crop or 8:7) | 2x (640x480) or 8:7 | Anbernic RG Cube, Powkiddy RGB30 |
| 1280 x 720 | 16:9 | 4x (960x640, 67% fill) | 3x (768x672) | 3x (960x720, 75% fill) | TrimUI Smart Pro |
| 1920 x 1080 | 16:9 | 6x (1440x960, 67% fill) | 4x (1024x896) or 5x | 4x (1280x960, 59% fill) | Retroid Pocket 5, AYN Odin 2 |
Frequently Asked Questions: Integer Scaling & Aspect Ratios
Q:What is integer scaling in retro game emulation?
Integer scaling multiplies original retro game pixels by whole numbers (2x, 3x, 4x, 5x). For example, a 240x160 GBA pixel scaled by 3x becomes exactly 720x480. Because every pixel is rendered as an identical, uniform square, scrolling remains razor-sharp without shimmering, warping, or blurriness.
Q:What causes pixel shimmering during 2D side-scrolling?
Pixel shimmering happens when a retro game is scaled by a fractional (non-integer) number, such as 2.35x. Some pixels are mapped across 2 physical pixels while adjacent pixels are mapped across 3. As the camera scrolls in games like Super Mario World or Sonic the Hedgehog, pixel rows fluctuate in thickness, creating an annoying strobing or crawling artifact.
Q:How do I eliminate shimmering without large black bars?
If integer scaling leaves borders you find too large, enable RetroArch's 'sharp-bilinear-simple' or 'pixellate' shader. These shaders apply integer scaling to the vast majority of the frame and interpolate only the single boundary sub-pixels, providing edge-to-edge full screen with zero scrolling shimmer.
Q:Which handheld screen is best for Game Boy Advance (3:2)?
The TrimUI Smart Pro (720p 16:9), Anbernic RG351P (native 480x320 3:2), and 1080p OLED devices (Retroid Pocket 5, AYN Odin 2) provide exceptional GBA scaling. On 1080p displays, GBA scales at a massive 6x integer (1440x960) with beautiful clarity.