[Bug 84155] Incorrect fog of war effect in Wasteland 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84155

--- Comment #14 from Matt Turner <mattst88 at gmail.com> ---
(In reply to comment #13)
> There is a notable information on the forum linked above: there is a
> workaround for the problem: MESA_EXTENSION_MAX_YEAR=2002
> Works for me, though there is not fog of war and graphics is a bit worse, as
> expected.

Looking at src/mesa/main/extensions.c's table of extensions, these two
extensions from 2003 seem like plausible culprits:

GL_ARB_fragment_program_shadow
GL_ARB_shading_language_100

Running the apitrace shows no GLSL programs (except for driver internal clear
shaders). We do, however have a couple instances of
GL_ARB_fragment_program_shadow.

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