[Mesa-dev] [Bug 78773] Doom3 BFG doesnt start

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78773

--- Comment #8 from Tapani Pälli <lemody at gmail.com> ---
Took a bit more look. The problem is that game opens a core context but expects
to use legacy/compatibility extensions like GL_ARB_multitexture. Same happens
with GL_ARB_texture_compression and GL_ARB_vertex_buffer_object which it
queries as well.

You can get a bit further by forcing a legacy context (using
MESA_GL_VERSION_OVERRIDE=2.0) but then after getting through extension checks
there are problems with shader compiler because shaders seem to be gles3 (have
"#version 300 es" in them), I'm not sure how to debug this further, I think
there are issues either in the game or glew.

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