[Webkit-unassigned] [Bug 259768] New: SRGB8_APLHA8 is broken when using video textures.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=259768

            Bug ID: 259768
           Summary: SRGB8_APLHA8 is broken when using video textures.
           Product: WebKit
           Version: Safari 16
          Hardware: Mac (Apple Silicon)
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: michael.herzog at human-interactive.org
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

three.js is using SRGB8_APLHA8 for sRGB encoded textures. That works fine for textures loaded via the <img> or <canvas> tag.

three.js provides a video texture class based on the <video> tag like demonstrated in the following example.

https://threejs.org/examples/webgl_video_panorama_equirectangular

As you can see, the colors are washed out though. That's because when configuring the video texture as SRGB8_APLHA8, the color space conversion to linear-srgb does not work anymore.

The demo does work as expected in Edge, Chrome and Firefox.

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