Optimizing WebGL for Mobile Experiences

Rendering rich 3D graphics on mobile browsers is notorious for battery drain and thermal throttling.

Optimizing these shader effects requires a multi-pronged strategy.

Resolution Scaling

One of the most effective techniques is dynamic resolution scaling. We don’t necessarily need to render the WebGL canvas at the native device pixel ratio (like 3x on modern iPhones). Stepping down the resolution slightly before applying a cheap post-processing anti-aliasing pass often yields identical visual results at a fraction of the cost.

Furthermore, gracefully degrading shader complexity based on the device’s framerate history ensures a stable experience for everyone.