Editing Openai/693e48dd-ce3c-800a-b636-9b3efde0fdec (section)

==== Modern phone displays do a lot after the image is rendered: ====
* local contrast enhancement
* temporal dithering
* tone mapping
* adaptive brightness compensation
* power-saving pixel driving

These processes operate on regions, not individual pixels, and they are recomputed every frame.

So when:
* the phone tilts a fraction of a degree
* the orientation changes
* the content underneath changes
* the brightness adapts
* the display warms slightly

…the processing regions get reprojected.

That’s why an artifact can:
* move up/down with phone pitch
* disappear on rotation
* drift back in afterward
* look like it’s “responding”

It’s not set-in — it’s state-bound.