[Bug 95130] Derivatives of gl_Color wrong when helper pixels used

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95130

--- Comment #4 from Nicolai Hähnle <nhaehnle at gmail.com> ---
As a temporary workaround, the error should disappear when you run with the
environment variable setting R600_DEBUG=mono.

The cause is that with non-monolithic shaders, input interpolation happens in
the prolog. However, when we compile the prolog we do not see the derivative
computations and therefore fail to turn the helper pixels on.

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