Re: Event Invitation: PNG marketing meeting

.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>.
>>
>
>