Mac wide_gamut_macos is failing: Unsupported pixel format: MTLPixelFormatBGRA8Unorm #182589
Description
Mac wide_gamut_macos is failing:
https://ci.chromium.org/ui/p/flutter/builders/staging/Mac%20wide_gamut_macos/514/overview
[2026-02-18 20:56:02.789277] [STDOUT] stdout: The following TestFailure was thrown running a test:
[2026-02-18 20:56:02.789282] [STDOUT] stdout: Expected: contains color [1.0931, -0.2268, -0.1501]
[2026-02-18 20:56:02.789285] [STDOUT] stdout: Actual: [
[2026-02-18 20:56:02.789288] [STDOUT] stdout: 800,
[2026-02-18 20:56:02.791066] [STDOUT] stdout: 600,
[2026-02-18 20:56:02.791084] [STDOUT] stdout: 'MTLPixelFormatBGRA8Unorm',
[2026-02-18 20:56:02.791325] [STDOUT] stdout: [
[2026-02-18 20:56:02.791334] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791337] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791340] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791342] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791671] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791724] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791740] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791892] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791909] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791913] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791916] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791919] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791921] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791924] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791927] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791930] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791932] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791940] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791942] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791945] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791947] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791950] [STDOUT] stdout: 247,
[2026-02-18 20:56:02.791953] [STDOUT] stdout: 254,
[2026-02-18 20:56:02.791955] [STDOUT] stdout: 255,
[2026-02-18 20:56:02.791958] [STDOUT] stdout: ...
[2026-02-18 20:56:02.791960] [STDOUT] stdout: ]
[2026-02-18 20:56:02.791963] [STDOUT] stdout: ]
[2026-02-18 20:56:02.791966] [STDOUT] stdout: Which: could not find any colors (unsupported pixel format?)
[2026-02-18 20:56:02.791969] [STDOUT] stdout: Unsupported operation: Unsupported pixel format: MTLPixelFormatBGRA8Unorm at #0 _findColor
[2026-02-18 20:56:02.791973] [STDOUT] stdout: (file:///Volumes/Work/s/w/ir/x/w/rc/tmpywcf4frw/flutter%20sdk/dev/integration_tests/wide_gamut_test/integration_test/app_test.dart:76:5)
[2026-02-18 20:56:02.791976] [STDOUT] stdout: #1 _HasColor.matches
[2026-02-18 20:56:02.791979] [STDOUT] stdout: (file:///Volumes/Work/s/w/ir/x/w/rc/tmpywcf4frw/flutter%20sdk/dev/integration_tests/wide_gamut_test/integration_test/app_test.dart:89:48)
Introduced in #181769.