[Bug 38145] New: r600g/evergreen: Incorrect rendering of some effects in doom3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=38145

           Summary: r600g/evergreen: Incorrect rendering of some effects
                    in doom3
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: ptpzz at yandex.ru


Created an attachment (id=47801)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=47801)
screenshot of fire rendering

Some doom3 effects like slightly warped objects behind the fire and glass
windows aren't rendered correctly on evergreen with r600g (high quality effects
should be enabled in the game settings to reproduce). It was not very
noticeable before the commit d1b8f8e8b3b41ab6092fa3f18a4891a0198f64de "r600g:
don't lookup a vs semantic for position/face", but after that commit it is much
more visible.

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