Individual skill
3d-retina-resolution
Render a 3D canvas sharply on Retina and HiDPI displays, including explicit 200 percent resolution, synchronized renderer and post-processing sizes, correct pointer coordinates, and measured quality fallbacks. Use for blurry WebGL output, 2x rendering, high-resolution previews, and display-density changes.
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# 3D Retina Resolution
Treat an explicit **200% rendering** request as two drawing-buffer pixels per CSS pixel in each dimension. A 1200 × 800 CSS canvas therefore uses a 2400 × 1600 drawing buffer, or four times the pixels of 100%. Layout and camera framing stay unchanged.
## Choose the scale deliberately
- **Fixed 200%:** effective pixel ratio is `2`, independent of device pixel ratio. This is the default when the user explicitly requests 200%.
- **Automatic Retina, capped at 2×:** effective ratio is `Math.min(window.devicePixelRatio || 1, 2)`. This can render at 1× on an ordinary display; label it Auto rather than claiming it always renders at 200%.
- **Relative to native resolution:** multiply native DPR only when the user explicitly wants that meaning. Native 2× multiplied by another 2 becomes 4× per dimension, or sixteen times the CSS pixel count.
Keep an explicit quality selection distinct from automatic adaptation. Inspect the project's renderer and post-processing architecture before changing sizing.
## Synchronize the rendering pipeline
