1455571 - Webgl canvas is blackout on cairo-gtk3-wayland build when e10s is disable

Status: RESOLVED DUPLICATE of bug 1462642

(Core :: Graphics, defect, P5)

Description

[Hiroshi Hatake [:cosmo0920]]

Attachment: Screenshot from 2018-04-20 19-05-13.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Build ID: 20180326230345

Steps to reproduce:

Checkout m-c source tree:

revision is:
---
commit b9a82af44a65f2d8d3c3d9f0b75a3ce7bbe468c3
Author: Cosmin Sabou <[e-mail]>
Date:   Fri Apr 20 06:47:41 2018 +0300

    Backed out 2 changesets (bug 1387399) for OSX reftests permafailures on attachment-local-positi
oning-2.html. a=backout
    
    Backed out changeset b78a225fa8c9 (bug 1387399)
    Backed out changeset 4beeacb75bf5 (bug 1387399)
---

Build with the following configuration:

---
. $topsrcdir/browser/config/mozconfig

ac_add_options --enable-default-toolkit=cairo-gtk3-wayland

mk_add_options BUILD_OFFICIAL=1
mk_add_options MOZILLA_OFFICIAL=1
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/objdir-wayland
mk_add_options AUTOCLOBBER=1

ac_add_options --disable-crashreporter
ac_add_options --without-system-nspr
ac_add_options --without-system-nss

ac_add_options --enable-debug
ac_add_options --disable-optimize

ac_add_options --enable-release
ac_add_options --enable-tests
---

Then e10s is disabled, enable layers acceleration, and enable webgl:

---
browser.tabs.remote.autostart	false
browser.tabs.remote.autostart.2	false
browser.tabs.remote.force-disable	true
browser.tabs.remote.force-enable	false
layers.acceleration.force-enabled	true
webgl.force-enabled	true
```

Access http://helloracer.com/webgl/.



Actual results:

Webgl canvas is blackout -- nothing not to be seen what are rendered.




Expected results:

WebGL contents can be seen.

Comment 1

[Martin Stránský [:stransky] (ni? me) (PTO, back on Feb 17)]

It's a dupe of Bug 1462642, WebGL/Wayland backend was fixed there.