1918773 - (hdr-images-windows) [meta] HDR image display on Windows

Status: NEW

(Core :: Graphics: Color Management, enhancement, P3)

Comment 1

[Kelsey Gilbert [:jgilbert]]

One testcase: https://www.wide-gamut.com/test/image-hdr

• When HDR mode is disabled in the OS (the default):
  • (Chrome) Canary color-manages the image into SDR reasonably, though the site has an expected warning:

    It looks like your monitor or browser does not support HDR images :(
    The images below may not display correctly

  • Nightly shows the image as far too dark (likely bug 1793091), and has the warning.
• When HDR mode is enabled in the OS:
  • Canary displays HDR properly, without the warning
  • Nightly appears the same as when OS HDR mode is disabled.

Comment 2

[mark]

Additional datapoint -- The same thing happens with HDR images drawn to a SDR <CANVAS> 2D, such as HDR .avif files (AVIF is also used at the test wide-gamut.com test case too)

e.g. Here's an HDR AVIF drawn to a canvas: https://beta.testufo.com/photo#photo=aces-spheres.avif&pps=960&scale=1

Comment 3

[Elle Solomina (she/her)]

Attachment: image.png

Comment 4

[Elle Solomina (she/her)]

I test HDR content in the PotPlayer. It works fine if I enable this processing:

Comment 5

[Mark Rejhon]

Corrections:

Delete: DependsOn #1793091 (that's a colorspace conversion issue)
Add: DependsOn #1889288 https://bugzilla.mozilla.org/show_bug.cgi?id=1889288

Working HDR images (showing as HDR) require a HDR Gecko framebuffer, covered by #1889288

My dependency-tree disentanglement commentary: https://bugzilla.mozilla.org/show_bug.cgi?id=1539685#c34