[Bug 66067] Trine 2's fragment normal buffer is mixtextured on Radeon HD 6770 (Juniper)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66067

--- Comment #12 from Nicholas Miell <nmiell at gmail.com> ---
(In reply to comment #11)
> > ARB_fragment_program_shadow may leave it undefined, but the GL spec ...
> 
> Which spec exactly? GL specifications only cover GLSL shaders.
> ARB_fragment_program is separate from that and has its own rules. The
> extension specification clearly states that behaviour is undefined.
> 
Section 8.23.1 of the GL 4.4 spec, which I paraphrased in comment #9.

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