Condensing the air.

Building one 64 × 64 × 64 tileable noise field, then the half-resolution light march.

The fog lost its context.

The WebGL context was lost, so rendering has stopped. Reload the page to rebuild the noise field and resume the test.

This browser cannot render the volume.

FOG TEST needs WebGL 2 with half-float render targets and 3D textures. Try a current desktop Chrome, Edge, Firefox or Safari.