3 ms·
It's also not entirely accurate in the case of newer DisplayPort interfaces offering Panel Self Refresh / Panel Replay, where only the changed area is sent over
by Lammy 5y ago
It's also not entirely accurate in the case of newer DisplayPort interfaces offering Panel Self Refresh / Panel Replay, where only the changed area is sent over the interface and static refreshes come from the panel's own memory https://vesa.org/press/vesa-publishes-displayport-2-0-video-standard-enabling-support-for-beyond-8k-resolutions-higher-refresh-rates-for-4k-hdr-and-virtual-reality-applications/ https://vesa.org/press/vesa-publishes-displayport-2-0-video-...
- kllrnohj 5y agoI thought about including PSR but the article's take is still mostly accurate in that you do still send pixel by pixel, row by row, in the case of a panel with PSR. Just the panel then remembers those pixels. On something like an ARM SoC where this is all unified memory, I couldn't entirely remember where exactly PSR sat. In that case you could argue the transfer is an atomic switch to a different buffer, but I thought the PSR memory was still a different segment even in that case.