On Thu, 16 Jan 2025 10:56:22 +0200 Pekka Paalanen <pekka.paala...@haloniitty.fi> wrote:
> On Thu, 19 Dec 2024 21:33:37 -0700 > Alex Hung <alex.h...@amd.com> wrote: > > > From: Harry Wentland <harry.wentl...@amd.com> > > > > The BT.709 and BT.2020 OETFs are the same, the only difference > > being that the BT.2020 variant is defined with more precision > > for 10 and 12-bit per color encodings. > > > > Both are used as encoding functions for video content, and are > > therefore defined as OETF (opto-electronic transfer function) > > instead of as EOTF (electro-optical transfer function). > > > > Signed-off-by: Alex Hung <alex.h...@amd.com> > > Signed-off-by: Harry Wentland <harry.wentl...@amd.com> > > Hi, > > why would a display system ever use BT.2020 or BT.709 OETF or its > inverse? Sorry, this is more for my own curiosity, not an argument against the patch. Since hardware designers decided to incorporate these curves explicitly, what use was in mind? It's likely something I have overlooked. Thanks, pq
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