[Bug 89850] Lightning bug on Pillars of Eternity with R600_DEBUG=llvm set

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89850

            Bug ID: 89850
           Summary: Lightning bug on Pillars of Eternity with
                    R600_DEBUG=llvm set
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: kilobug at kilobug.org
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 114779
  --> https://bugs.freedesktop.org/attachment.cgi?id=114779&action=edit
Screenshot with and without bug

When Pillars of Eternity (GOG version 1.0.0.1, native Linux version) is runned
with R600_DEBUG=llvm or any combination of it (R600_DEBUG="sb hyperz llvm" for
example), the lightning is completely saturated to white. It works well with no
R600_DEBUG or with R600_DEBUG="sb hyperz".

Included screenshots with the bug and without it. Since the bug doesn't happen
using default settings, I put the severity as minor.

Additional information :

- GPU = Radeon HD 6850

- OS = Debian Sid

- Mesa version = 10.6~git1503070909.1ca39e~gd~u from Oibaf's PPA

- libllvm version = 1:3.6-2

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