The replacement would never be erased because of a faulty if check.
Added test code to the relevant tests for regression testing in the
future.

(cherry picked from commit f4f12b96)

Modifieds were missing causing shaders to not be rebuilt
when they should have been

(cherry picked from commit d592cb2a)

6b255c3b KWSys: Backport build interface include directory fix to VTK 8.1

Merge-request: !3955

Backport KWSys commit 6e190d9ab0 (Fix include directory usage
requirement for build tree, 2018-02-20) to VTK 8.1.  The build interface
include directory value should be that of `KWSYS_HEADER_ROOT` rather
than just its default.  VTK uses a non-default header root.

Fixes: #17248

7ab4c781 KWSys: Backport macOS utimensat availability check to VTK 8.1
Reviewed-by: Sean McBride <sean@rogue-research.com>
Merge-request: !3779

Backport KWSys commit aa9f3a82b2 (macOS: Account for deployment target
when checking for utimensat, 2017-09-20) to VTK 8.1.

The SDK for macOS 10.13 adds `utimensat`, but the symbol is not
available at runtime on older macOS versions.  Check the deployment
target before using the symbol.

Fixes: #17213

aad077af backport mr 3690 to 8.1 release
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: David E. DeMarle <dave.demarle@kitware.com>
Merge-request: !3766

fixes for ssaapass graphics resopurces

21e886be change commit string to 8.1
48d2d219 Deprecate everything that touches vtkHyperOctree.
24ebec5b Deprecate vtkHyperOctreeFractalSource.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !3689

in process of pushing onto release and master branches before 8.1
is released

(cherry picked from commit 24f4ee6f)

(cherry picked from commit f2439b95)

As requested in paraview/paraview#17791.

(cherry picked from commit f4a51052)

a8ef4b05 Fixed an initialized-yet-unused-variable warning on Windows
62cf7516 Modified non-regression test for interface reconstruction.
a4cc7836 Fixed issues with the computation of material interfaces in HTG
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3609

587312d2 Merge branch 'upstream-tiff' into release
55534d28 tiff 2017-12-05 (818c6fed)
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !3661

* upstream-tiff:
  tiff 2017-12-05 (818c6fed)

Code extracted from:

    https://gitlab.kitware.com/third-party/tiff.git

at commit 818c6fede9fc273e5d55408081db844ac82f7909 (for/vtk).

307a1345 Invoke UpdateShaderEvent from volume mapper
026ada0c Added test that demonstrates ability to set shader uniforms from python
41d80c54 Provide access to the shader program in UpdateShaderEvent callback
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !3613

This will allow users to hook up callbacks for manipulating shader
uniforms.

(cherry picked from commit 3495e5e3)

(cherry picked from commit 1c7d1cd0)

This allows python code to manipulate shader uniforms directly.
Previously, the callback had access to vtkOpenGLHelper* which is
excluded from python bindings.

(cherry picked from commit e1a4d5b9)

This version of the test better corresponds to the intent of
material interface reconstruction, in that a material mask is
now explicitly specified. Non-regression image updated accordingly.

This commit addresses to main issues:
1. The AxisReflection was /adding/ modified arrays, as opposed to
   modifying in situ the interface arrays (vectors and intercepts).
   This had initially made on purpose with the intent of temporary
   retaining the original arrays for debugging purposes. However,
   this had been forgotten and left in place. As a result, interface
   computations after a reflection where incorrect. This bug was
   not revealing itself in the test harness so far as this combination
   (reflection + interface computations) was not exercised.
   As a result, this commit addresses the issue but also verifies
   this combination. Furthermore, the HTG source was modified in
   order to allow for the specification of intercepts arrays in
   the form that exercise this configuration.
2. The Geometry extraction was not building material interfaces, as
   a result of some code having been leftover during the HTG-v2
   merger in VTK 8. This commit fixes this issue, and also adds
   a unit test to verify material extraction together with its
   corresponding non-regression image.

1e0540cf tcl: deprecate for 8.1
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Acked-by: David Gobbi <david.gobbi@gmail.com>
Merge-request: !3582

e1e413fa Fixed, again, a slightly incorrect assert
Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: David Gobbi <david.gobbi@gmail.com>
Merge-request: !3577

Fixes issue #17171.

f40fc314 Remove vtkPUnstructuredGridGhostDataGenerator from docs
8e607a80 Remove legacy classes from ParallelGeometry
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3327

50583161 Fix crash in transforms when doing DeepCopy after Identity
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Shawn Waldon <shawn.waldon@kitware.com>
Merge-request: !3556

Seems these ghost references were introduced in cc5101a8 without
the accompanying data files. They have never been used in master so
I am removing them to fix data file tarball generation.

a09f1d3f Bump vtk-m to the official vtk-m 1.1.0 tag.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: David E. DeMarle <dave.demarle@kitware.com>
Merge-request: !3543

6f2a7bb5 Add log scaling to vtkPiecewiseFunction.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3500

b82b0bc8 Merge branch 'upstream-expat' into update-expat-2.2.5
45bb9431 expat 2017-11-06 (a71d7ff2)
ababb4db expat: update the readme name
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: David E. DeMarle <dave.demarle@kitware.com>
Merge-request: !3541

09e44a64 Restore GL_BLEND and GL_DEPTH_TEST after vtkSSAAPass is rendered
Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Allison Vacanti <allison.vacanti@kitware.com>
Merge-request: !3003

438d235a Fix catch warning.
a891b532 Use PDAL instead of Pdal for vtkPDALReader
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3540

Issue 16996

7ffb2af4 fixup some not marked override comp warnings
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3542