4 ms·
New HDR standards, Rec.709/Rec.2020 still have that same gamma ramp so I wouldn’t call it a relic.
by msk-lywenn 5y ago
New HDR standards, Rec.709/Rec.2020 still have that same gamma ramp so I wouldn’t call it a relic.
- phh 5y agoI'd say most HDR contents are using PQ rather than gamma ( https://en.m.wikipedia.org/wiki/Perceptual_quantizer https://en.m.wikipedia.org/wiki/Perceptual_quantizer ), and some are using HLG.
- msk-lywenn 5y agoYes and PQ use was standardized in Rec.2100. Still non-linear output :)
- foolrush 5y agoIt’s linear output; the PQ is just the “down the wire” encoding, and the display undoes it back to linear photon light.
- msk-lywenn 5y agoI don’t understand what you mean here. On the last engine I worked on, PQ encoding was done in a shader in the last rendering pass, which then ended up copied into the back buffer. That’s what I call output. Did we miss a magical hardware feature somewhere so that we could have kept output linear and just let the hardware do its thing ?