| <kbd>F5</kbd> | Reload [main.frag](./main.frag) and [main.vert](./main.vert) shaders. Red screen indicates a compilation or linking error, check the output of the program if you see it. |
| <kbd>SPACE</kbd> | Pause/unpause the time uniform variable in shaders |
| <kbd>←</kbd><kbd>→</kbd> | In pause mode step back/forth in time. |