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

Florian Bösch [email protected]
Thu Jul 12 03:10:21 PDT 2018

Oh and in any case afaik the only 10-bit consumer grad display panels out
there are cheap, don't really do 10-bit colors and have poor gamut/contrast
effectively negating any benefit.

On Thu, Jul 12, 2018 at 12:06 PM, Florian Bösch <[email protected]> wrote:

> My knowledge on the topic might be a bit outdated, but here's my
> understanding.
> Neither OpenGL nor Direct3D support HDR front/back buffers and even though
> the GPU might be able to output a HDR signal to the monitor (something that
> previously was only possible with ugly hacks in medical imaging setups with
> a special driver that interlaced 8-bit and then tacked on 2 more bits into
> a seperate render target), when you render hardware accelerated all your
> output values get clamped to 8-bits per component when you put them into
> gl_FragColor for the rasterizer.
> Please correct me if this is wrong (by now).
> On Thu, Jul 12, 2018 at 11:47 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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