https://bugs.freedesktop.org/show_bug.cgi?id=104683
--- Comment #2 from Dieter Nützel Dieter@nuetzel-hh.de --- Can you both try this site, too?
http://webglsamples.org/aquarium/aquarium.html
It worked some days/weeks before XMas on RX580 (radeonsi) under Konqueror (5.0.97). Since then I get WebGL unsupportet with Firefox (57.0.4).
'It does not appear your computer supports WebGL. Click here for more information.
Status: WebGL creation failed: * Error during native OpenGL init. * Error during native OpenGL init. * Error during native OpenGL init. * Error during native OpenGL init. * Error during native OpenGL init. * Exhausted GL driver caps. * Exhausted GL driver options.'
Some subpages (Google) demos works with Konqueror (5.0.97) http://webglsamples.org/blob/blob.html http://webglsamples.org/dynamic-cubemap/dynamic-cubemap.html http://webglsamples.org
But nothing with Firefox.
If this is unrelated I'll open my own bug.