env_grade

The NEKO-9 grade. A light-space post-process on the scene layer, so it reaches the rendered room and leaves the interface untouched. It split-tones off a tonemapped luminance — the deep parts of the frame go blue-black, the lamps and the neon keep their own colour — lays a depth-keyed haze between the camera and everything far away, and closes with a vignette measured in the frame's own shape so it stays a soft oval on a tall screen and on a wide one alike. The env slice drives its tints from the dawn, so one pass carries the whole night.