Glass Padlock

Lumen pack asset: a padlock in frosted, halftone-printed glass with a keyhole cut clean through. The keyhole flashes, the shackle pops up and swings open about its leg in 3D, then swings back and drops shut with a bounce. Raymarched in WebGL with refraction and bevel highlights. Five tints or your own colors. Zero dependencies; any number share one WebGL context.