MANUAL STUDY / BACKGROUNDS

Own the backdrop.

A CSS image, a scene background, a cube map, and a second scene all fill pixels differently. Make the ownership boundary visible.

Preparing background study—
Creating procedural color, cube, equirectangular, and background-scene paths…

CSS stays outside WebGL. Scene backgrounds are rendered by the active camera. Separate-scene modes render an orthographic plane first, so its aspect policy is explicit.

THREE.JS FOUNDATIONS / BACKGROUND MANUAL