Re: Event Invitation: PNG marketing meeting

>But is PNG really the right choice of format for real-time stuff?

BTW - from my perspective, which is browser/video games/real-time rendering
oriented, I could also ask "is PNG really the right choice for broadcast
stuff"?


On Mon, Nov 13, 2023 at 2:45 PM Richard Geldreich <rich@binomial.info>
wrote:

> .PNG is already incredibly popular in video games, real-time rendering,
> visualization, etc. They already use half-floats at various stages in their
> pipelines.
>
> Note the Windows compositer internally now uses IEEE half-floats:
>
>
> https://learn.microsoft.com/en-us/windows/win32/direct3darticles/high-dynamic-range
>
> FP16: "When Advanced Color is enabled, the DWM performs its composition
> using IEEE half-precision floating point (FP16), eliminating any
> bottlenecks, and allowing the full precision of the display to be used."
>
> [image: image.png]
>
> On Mon, Nov 13, 2023 at 2:12 PM Leo Barnes <lbarnes@apple.com> wrote:
>
>>
>>
>> On Nov 13, 2023, at 18:56, Richard Geldreich <rich@binomial.info> wrote:
>>
>> A note about marketing "HDR" PNG: What PNG is calling "HDR" does not have
>> nearly enough dynamic range to be called "HDR" in some segments of the
>> industry, such as in real-time rendering. Even 12-bits with a transfer
>> function is nowhere near enough for our needs. Importantly, we need at
>> least 5-bit exponents.
>>
>>
>> But is PNG really the right choice of format for real-time stuff?
>> Real-time stuff tends to require HW acceleration and PNG is not exactly
>> easy to accelerate with HW.
>>
>> I don't disagree with the use-case, but I don't necessarily think all
>> formats have to support all use-cases.
>>
>> Cheers,
>> //Leo
>>
>>
>>
>>
>> On Mon, Nov 13, 2023 at 12:23 PM Chris Blume (W3C Calendar) <
>> noreply+calendar@w3.org> wrote:
>>
>>> View this event in your browser
>>> <https://www.w3.org/events/meetings/77dd00ce-0351-4282-bab9-bdef33c6d076/>
>>> PNG marketing meeting Upcoming Confirmed
>>>
>>> 27 November 2023, 10:00 -11:00 EST5EDT
>>>
>>> Event is recurring every other week on Monday, starting from 2023-11-27,
>>> until 2024-11-13
>>> Portable Network Graphics (PNG) Working Group
>>> <https://www.w3.org/groups/wg/png/calendar/>
>>>
>>> The primary meeting link ishttps://
>>> w3c.zoom.us/j/85136933003?pwd=SW9ZaFV0UEpydkU2RXNMYnEraE85QT09
>>>   Joining Instructions
>>>
>>> Instructions are restricted to meeting participants. You need to log in
>>> <https://auth.w3.org/?url=https%3A%2F%2Fwww.w3.org%2Fevents%2Fmeetings%2F77dd00ce-0351-4282-bab9-bdef33c6d076%2F>
>>> to see them.
>>>   Participants Organizers
>>>
>>>    - Chris Blume
>>>    - Stephanie Hurlburt
>>>
>>> Groups
>>>
>>>    - Portable Network Graphics (PNG) Working Group
>>>    <https://www.w3.org/groups/wg/png/> (View Calendar
>>>    <https://www.w3.org/groups/wg/png/calendar/>)
>>>
>>> Report feedback and issues on GitHub <https://github.com/w3c/calendar>.
>>>
>>
>>