1652783 - [Wayland] DMABUF WebGL gets broken when resizing the window if you have multiple GPUs

Status: RESOLVED DUPLICATE of bug 1588904

(Core :: Graphics: CanvasWebGL, defect)

Description

[Darkspirit]

Attachment: Bildschirmfoto von 2020-07-14 17-32-50.png

Gnome Wayland, Debian Testing, Radeon RX480

MOZ_ENABLE_WAYLAND=1 mozregression --good 2020-02-14 --bad 2020-07-14 --pref gfx.webrender.all:true -a https://my.matterport.com/show/?m=xagotPnLxLt

12:31.55 INFO: Last good revision: 92991ac3e69b59cc793e734e98057a52d7a2e823
12:31.55 INFO: First bad revision: ed590162c31911d03a2375ddfd98ba01481e732e
12:31.55 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=92991ac3e69b59cc793e734e98057a52d7a2e823&tochange=ed590162c31911d03a2375ddfd98ba01481e732e

ed590162c31911d03a2375ddfd98ba01481e732e Martin Stransky — Bug 1646007 [Wayland] Check Wayland dmabuf backend and fallback to a default one, r=jgilbert
da3c1f47c514fc75270fbe81910df3408f528c9c Martin Stransky — Bug 1646007 [Wayland] Check Wayland backend before X11, r=jgilbert

I have two GPUs in my desktop PC, the Intel APU and my dedicated Radeon RX480:
If I explicitly configure the correct GPU (Radeon) via env var, the bug does not occur:
MOZ_WAYLAND_DRM_DEVICE=/dev/dri/renderD129 MOZ_ENABLE_WAYLAND=1 mozregression --launch 2020-07-14 --pref gfx.webrender.all:true -a https://my.matterport.com/show/?m=xagotPnLxLt

Therefore, this bug might be resolved by bug 1588904.
Although DMABUF WebGL has been enabled by default (bug 1646007), the Wayland backend itself isn't yet (bug 1543600).

Comment 1

[Darkspirit]

Also reproducible with Google Maps.

Comment 2

[Darkspirit]

This might be a risk for Fedora, I'm not sure.

Comment 3

[Martin Stránský [:stransky] (ni? me)]

Thanks for reporting. That's interesting bug but I have no idea what can cause it if it happens on double GPU system only. Unfortunately I don't have such setup, a typical laptop I have is integrated Intel GPU + dedicated nvidia GPU which is off by default under Wayland. I'll try to get a system with secondary AMD card.

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:jgilbert, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 5

[Robert Mader [:rmader]]

Jan, has this been fixed by bug 1588904 ?

Comment 6

[Robert Mader [:rmader]]

This was most likely fixed by bug 1588904 - please reopen if that's not the case.