[Public WebGL] Rendering to HDR displays (10bits per color component)

Ken Russell [email protected]
Fri Jul 13 10:36:28 PDT 2018

Yes! There's work underway to support an HDR back buffer for the WebGL
rendering context. The current proposed API is here:

Color spaces and profiles are a complex topic (and I'm no expert) but my
understanding is that the initial switch is to be able to allocate a
float16 back buffer for WebGL. The browser will then assume responsibility
for presenting that to the screen. The colorspace will, I think, be
extended sRGB.

I've heard from a co-worker who's actively working in this area that they
have HDR output coming out of WebGL on an HDR monitor.

Not sure of the standardization / shipment status of this. To understand
the current status in Chrome, please sign up for this group and post to it:


On Thu, Jul 12, 2018 at 2:48 AM Javi Agenjo <[email protected]> wrote:

> Hi:
> Now that Chrome supports HDR video rendering (in Windows 10) with 10bits
> per color (using the VP9 Profile 2 10-bit) I was wondering if there would
> be any changes that we can instantiate a WebGL Context that has more than
> 8bits per color component, now that HDR displays are starting to roll out
> commercially.
> Sorry if this topic has been brought before or if this feature is already
> supported, but I did my research and couldnt find anything.
> Thanks
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