[Mesa-dev] [Bug 72607] [llvmpipe] piglit glean fragProg1 Z-write test regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72607

--- Comment #1 from Matthew McClure <mcclurem at vmware.com> ---
A patch is in testing to implement the correct plumbing for ARB_depth_clamp.
The fragment depth write was not clamping against the near/far depth range as
specified here:

   How should the setting of the raster position function when depth
   clamping is enabled?

      RESOLUTION:  When setting the raster position, clamp the raster
      position zw to the range [min(n,f),max(n,f)] where n and f are
      the near and far depth range values.

See: http://www.opengl.org/registry/specs/ARB/depth_clamp.txt

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