mesa: Changes to 'mesa_7_0_branch'

[Roland Scheidegger]

 src/mesa/drivers/dri/i915tex/i915_tex_layout.c |    2 -
 src/mesa/shader/prog_statevars.c               |    2 +
 src/mesa/tnl/t_vb_fog.c                        |   43 +++++++++++++++----------
 3 files changed, 30 insertions(+), 17 deletions(-)

commit diffs at http://gitweb.freedesktop.org/?p=mesa/mesa.git;a=summary

New commits:
commit 9456e7f0ff076ab4a6977287b8985d8df17af855
Author: Roland Scheidegger <sroland at tungstengraphics.com>
Date:   Wed Oct 3 22:20:44 2007 +0200

    minor fog calc cleanup

commit a5db24adc25689819165e3b7afd0dc1f60d43115
Author: Roland Scheidegger <sroland at tungstengraphics.com>
Date:   Tue May 22 03:29:59 2007 +0200

    fog: fix issues with negative fog coords (may fix #10529)
    
    Rework tnl fog a bit. Make sure we always use ABS(eyez) when fog coord source
    is depth, OTOH it does not seem to be necessary to use it (as was done before
    in some cases) if fog coord source is fogcoord (just to save some work).
    This fixes tests/fog (the first 2 cases) with i915/i915tex.

commit 17664e262031605c2be580acae4b40d98483a206
Author: Roland Scheidegger <sroland at tungstengraphics.com>
Date:   Tue May 22 02:52:39 2007 +0200

    make sure optimized fog params get updated

commit 43a0eb0253a93f39c7ff45efa241e186f143e168
Author: Roland Scheidegger <sroland at tungstengraphics.com>
Date:   Mon May 21 11:38:25 2007 +0200

    unbreak 3d textures (typo when setting tex layout)