webgl/2.0.1/conformance2/context/context-mode.html fails
https://www.khronos.org/registry/webgl/sdk/tests/conformance2/context/context-mode.html?webglVersion=2&quiet=0&quick=1 This test ensures WebGL 2.0 implementations respect the canvas's context mode. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS WebGL2RenderingContext should be a member of window PASS WebGL2RenderingContext should be 'in' window Testing webgl2 context type PASS Canvas.getContext('webgl2') should return the same value every time FAIL Canvas.getContext('webgl') after getContext('webgl2') should return null Testing webgl context type PASS Canvas.getContext('webgl') should return the same value every time FAIL Canvas.getContext('webgl2') after getContext('webgl') should return null PASS successfullyParsed is true TEST COMPLETE
At least macOS 11.3, iMacPro1,1, Radeon Pro Vega 56
<rdar://problem/75774199>