[Bug 110837] Mesa 19.0.5 breaks support for a WebGL 2 in a Firefox 67.0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110837

            Bug ID: 110837
           Summary: Mesa 19.0.5 breaks support for a WebGL 2 in a Firefox
                    67.0
           Product: Mesa
           Version: 19.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: kaykaykay123 at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Steps to reproduce:

1. Start Firefox.
2. Open about:support in a Firefox.
3. Look at "WebGL 2" info strings (search for a "webgl 2" substring).

Info strings contains "WebGL creation failed: * " or no info at all.

Expected Results: info strings contains descriptions, as it is with a "WebGL
1".


System: openSUSE 15.0 + Mesa 19.0.5 + Firefox 67.0.
ATI (AMD) Radeon Evergreen Cedar, TeraScale 2.
AFAIR Mesa 19.0.4 and before works well.

Firefox works, but supposedly has some issues.

:~>glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: AMD CEDAR (DRM 2.50.0 / 4.12.14-lp150.12.61-default,
LLVM 7.0.1)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 19.0.5
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.1 Mesa 19.0.5
OpenGL shading language version string: 1.40
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 19.0.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions:

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