[Webkit-unassigned] [Bug 242698] New: REGRESSION: Colors are way off on http/tests/media/hls/hls-hdr-switch.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242698

            Bug ID: 242698
           Summary: REGRESSION: Colors are way off on
                    http/tests/media/hls/hls-hdr-switch.html
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: eric.carlson at apple.com, heycam at apple.com,
                    jer.noble at apple.com,
                    webkit-bug-importer at group.apple.com

http/tests/media/hls/hls-hdr-switch.html used to pass on macOS Big Sur as of 2021-04-15, before we broke it with PHP to Python conversion. Fixing that, I see that it fails in a new way.

This test waits for a video drawn to canvas to become red, and then it waits for it to become green. The test allows for up to +-20 from (255, 0, 0, 255) and (0, 255, 0, 255) for those.

But what I'm observing on my machine and on EWS too is (232,39,0,255) and (67,251,0,255). This is roughly the colors I see on the screen indeed, when running r-w-t- with --show-window. Getting these exact colors on Big Sur with both WK1 and WK2.

As an aside, this test fails in a different way on macOS Ventura beta, I'm getting (0, 0, 0, 0). But this bug tracks the colors being off.

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