[Bug 4900] New: Radeon LINEAR and EXP fogging don't work in non-fogcoord

[<bug...@fr...>]

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https://bugs.freedesktop.org/show_bug.cgi?id=4900          
     
           Summary: Radeon LINEAR and EXP fogging don't work in non-fogcoord
           Product: Mesa
           Version: CVS
          Platform: Other
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Drivers/DRI/Radeon
        AssignedTo: dri...@li...
        ReportedBy: anholt@FreeBSD.org


As the summary says, Mesa/progs/tests/fog.c gives bad results for non-fogcoord
fog on r100 with LINEAR and EXP.  Attached patch fixes it, though I'd like to
get confirmation that others think it's a good idea.  It contradicts the
documentation, which says that the previous equations were right.  What do
people think?          
     
     
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