[Bug 27338] New: Mipmap tiling problem

[Bug 27338] New: Mipmap tiling problem

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27338

           Summary: Mipmap tiling problem
           Product: Mesa
           Version: git
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.sourceforge.net
        ReportedBy: Mathias.Froehlich@web.de


Created an attachment (id=34501)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34501)
Fix for the mipmap problem

Hi,

Since the tiling changes in the r300g driver I have observed problems with non
square textures in some mipmap levels. I have not nailed the problem down to a
specific level or a specific texture size, but the attached patch looks
plausible to me and fixes some fallout I observed since these patches with my
favourite OpenSceneGraph test model displayed in osgviewer.

Please review/apply.

Mathias


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[Bug 27338] Mipmap tiling problem

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27338


Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #1 from Marek Olšák <maraeo@gmail.com>  2010-03-27 06:15:17 PST ---
Somehow when the texture height is at least 4x smaller than a macro-tile, the
hw switches back to macro-linear. I'd say this is an undocumented hw behavior
rather than a bug in stride calculation or something like that.

So thanks for the patch, tested and pushed. Closing...


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[Bug 27338] Mipmap tiling problem

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=27338


Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




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