March 26, 2026

Notes From Tuning a Shader Playground

A small rendering checklist for keeping GPU demos responsive without flattening the visual style.

Shader route in this portfolio is intentionally visual but runtime stays disciplined. Easiest wins: reduce work before frame starts. Simplify asset loading, keep uniforms predictable, avoid layout churn around canvas.

Waveform render study

UI frames the demo

Page surrounding GPU demo should feel restrained. Strong content hierarchy, subtle hover states. Makes canvas feel deliberate instead of noisy.

Control path stays obvious

Useful pattern: separate authoring surface from runtime surface.

Touch only uniforms that changed:

const nextFrame = {
  resolution: [width, height],
  time: elapsedSeconds,
  mouse: [pointerX, pointerY]
}

shaderMaterial.uniforms.uTime.value = nextFrame.time

Easier to reason about what updates every frame, what stays static.

Interactive Demo

Shader playground

Edit the GLSL and the canvas recompiles as you type.

Open the live route

Compare this write-up with live /shader-demo route. See how much perceived polish comes from pacing and layout. Not raw shader complexity.