[Bug 98021] Applications and games crash after opengl version overrides

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98021

            Bug ID: 98021
           Summary: Applications and games crash after opengl version
                    overrides
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: step2back+freedesktop at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

I should set mesa version to smooth play in alien isolation (
https://bugs.freedesktop.org/show_bug.cgi?id=93144#c35 ). I set
"MESA_GL_VERSION_OVERRIDE=4.3 MESA_GLSL_VERSION_OVERRIDE=430". Appications and
games start carsh in gl initialization. Some examples: steam, 0ad. glxgear
shows black screen.

I use software from oibaf ppa:

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org (0x1002)
    Device: AMD CAPE VERDE (DRM 2.43.0 / 4.4.0-41-generic, LLVM 3.9.0) (0x683d)
    Version: 12.1.0
    Accelerated: yes
    Video memory: 1024MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.3
    Max compat profile version: 4.3
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0

MESA_DEBUG=1 prints

Mesa: User error: GL_INVALID_ENUM in glGetString(GL_EXTENSIONS)

I'm curious why mesa does not set 4.3 already. According mesamatrix (by
features.txt) there are all extensions implemented for radeonsi.

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