Shader-Based Section Transitions

What this builds

A full-page scroll experience where navigating between sections triggers WebGL fragment-shader transitions. Each section pair can have its own transition effect (dissolve, directional wipe, noise displacement, radial reveal, chromatic ripple). The sections are captured as textures and the shader interpolates between them as scroll progresses through the transition zone.

• OGL-based WebGL canvas covering the viewport, rendering section textures through transition shaders
• Scroll-scrubbed transition progress mapped per section boundary
• A library of 5+ transition shaders, selectable per boundary
• Section content rendered to off-screen textures via html2canvas or pre-captured images
• CSS-only fallback for browsers without WebGL or under prefers-reduced-motion
• Snap-to-section behavior after transition completes

When to use / when not to

• Use for portfolio sites, agency pages, or product launches where the transition between sections IS the design moment.
• Use when each section is visually distinct (different background, different content density) and a hard cut feels cheap.
• Do NOT use for text-heavy article pages. Shader transitions between paragraphs are hostile to reading flow.
• Do NOT use when sections scroll naturally with parallax. This pattern replaces native scroll with controlled transitions.
• For WebGL backgrounds without transitions, see glsl-fragment-backgrounds. For post-processing effects on a 3D scene, see shader-postprocessing. For hero-only shader work, see hero-webgl-shader-fullscreen.