SubViewports do not function in Chrome on the Mac when the Metal ANGLE backend is used (now default)

tetious commented 3 months ago

Tested versions

Reproducible in 4.3rc2
Tested on a MacBook Air M1 and MacBook Pro 14 (M1 Pro)

System information

MacOs 14.5, Chrome 127.0.6533.89

Issue description

When a SubViewport under a SubViewportContainer is visible in a scene, on a Mac that is using the "new" Metal ANGLE backend by default, Chrome's GL context immediately crashes and logs a bunch of errors: https://gist.github.com/tetious/48c29263af9202fac48049c04f1b160c

This only occurs when the ANGLE graphics backend is set to Metal or left to the default (at least for my two test Macs) in chrome://flags. If the backend is set to OpenGL, it works normally.

Steps to reproduce

Run the attached MRP on a Mac with Chrome by using the "Remote Debug" -> Run in browser feature. It should fail immediately.

Make the SubViewportContainer invisible -> does not fail (but viewport doesn't show)
Set the ANGLE graphics backend to OpenGL in chrome://flags with visible viewport -> works as expected

Minimal reproduction project (MRP)

subviewtest.zip Repro URL: https://orcling.com/subview-godot/

alvinhochun commented 3 months ago

Have you filed an issue for Chromium? It would make sense to make Chromium devs aware of the bug.

tetious commented 3 months ago

Have you filed an issue for Chromium? It would make sense to make Chromium devs aware of the bug.

Unfortunately I don't think I have enough context as to what is happening within Godot when this failure occurs to create a useful bug report for the Chromium folks.

Maybe someone with more low-level engine experience can report it? (or summarize the problem in a way that would be useful for the Chromium devs?)

alvinhochun commented 2 months ago

You worry too much. You have an MRP for Chromium folks to (try to) reproduce the issue They are professionals, surely they have the tools and technical know-how to figure out what is happening. Please just file the issue with what you have. If they do want more information, they will ask.

Calinou commented 2 months ago

@tetious Can you report this on chromium.org? Thanks in advance :slightly_smiling_face:

tetious commented 2 months ago

Chromium issue: https://issues.chromium.org/issues/359912067

tetious commented 2 months ago

This is fixed for me in Chrome 128. Is this still a problem for you, @Dev0mi ?

godotengine / godot