This test verifies that depth testing is enabled for the first
invocation of the vtkValuePass.

(cherry picked from commit a8551bd5)

- closes #18547
- closes #19383
- Use glad instead of glew for loading GL extension functions
because GLEW has trouble using GLX and EGL in the same build.
- Replaces the VTK::glew module with VTK::glad.
- Removed the utility VTK::opengl module because it is unnecessary
after the changes made to vtkOpenGLOptions.cmake
- OpenGL is now loaded at runtime in desktop platforms.
- For mobile and webassembly, when VTK_OPENGL_USE_GLES is ON,
glad finds and links to the OpenGL::GLES3 library.
- Support for OSMesa is always available from VTK. Users must make
sure the libOSMesa.so or osmesa.dll is installed.
- Support for EGL is always available from VTK in Linux and Android.
Users must make sure libEGL is installed.
- On platforms where multiple render window backends are possible, the
vtkOpenGLRenderWindow is made the default factory override and it's
New method implements runtime tests to determine what render windows
can work. It basically constructs the platform implementation render
window, attempts to initialize it and checks whether it was
successfully intialized.
- The X OpenGL render window class was updated to not call abort.
It also print warnings instead of errors when it fails to open X
display. This allows us to safely test support for GLX at runtime.
- The new environment variable VTK_DEFAULT_OPENGL_WINDOW
can optionally be used to force a render window subclass
at runtime. It is useful to debug support for a fallback render
window on different system configuration.
- Remove usage of unnecessary CMake flag VTK_OPENGL_HAS_MESA.
- Since there is no compile time depedency for OSMesa in VTK,
this commit makes VTK act as if it can always use OSMesa,
obviously when the system executing VTK code has osmesa installed.
- ci scripts will be adjusted in next commits

Move vtkVRRay and vtkOpenGLAvatar into the Rendering/OpenGL2 module
so that vtkSynchronizableOpenGLAvatar (added to Rendering/Parallel
in the previous commit) can depend on those classes without creating
a cycle in the module dependency graph.

- these classes use texture buffers and vertex pulling which can help us reduce memory usage in the GLES 3.0 polydata mapper.

Replace 1

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================(.|\n)*.*Program:   Visualization Toolkit\n.*Module:.*\n\n  Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n  All rights reserved.\n  See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n.*\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 2

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================(.|\n)*.*Program:   Visualization Toolkit\n.*Module:.*\n\n  Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n  All rights reserved.\n  See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n.*\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 3

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n.*Program:.*Visualization Toolkit\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n.*\n.*\n.*\n.*\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 4

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 5

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 6

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n.*=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 7

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 8

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\/\*==================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n===================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace sandia 1

 cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n\n-------------------------------------------------------------------------\n.*Copyright 2008 Sandia Corporation.\n.*Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,\n.*the U.S. Government retains certain rights in this software.\n-------------------------------------------------------------------------\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation\n\/\/ SPDX-License-Identifier: LicenseRef-BSD-3-CLAUSE-Sandia-USGov/g' %s

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cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*Visualization Toolkit\n.*Module:.*\n.*Language:.*\n\n.*Copyright \(c\) .* Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual 1

Replace 10

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace 11

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n.*Program:.*\n.*Module:.*\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n.*\n.*\n.*\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Replace Valve 1

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n.*Module:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\nParts Copyright Valve Corporation from.*\nunder their BSD license found here:\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright (c) 2015, Valve Corporation\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual 2

Manual 3

manual 4

manual sandia 1

manual 5

Replace ParaView 1

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n.*Module:.*\n\n.*Copyright \(c\) Sandia Corporation, Kitware Inc.\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright (c) Sandia Corporation, Kitware Inc\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual Sandia 2

Replace 13

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n.*=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual sandia 3

replace 14

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n.*Module:.*\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .* for details.\n\n.*\n.*\n.*\n\n.*=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual sandia 4

Manual 6

manual 7

manual sandia 5

Manual Kitware SAS 1

manual 7

Manual 10

manual 11

manual 12

manual 15

Fix wrong spdx name

Remove useless cmake copyright

Remove useless copyrights

Remove useless copyright and license statement in python files

Removal glsl

cat files.out | xargs -I %s perl -i~ -0777 -pe "s/.*=========================================================================\n.*\n.*Program:.*\n.*Module:.*\n.*\n.*Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n.*All rights reserved.\n.*See Copyright.txt or .*for details.\n.*\n.*\n.*\n.*\n.*\n.*=========================================================================\n//g" %s

Replace sandia accel

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\/=============================================================================\n.*\n.*Copyright \(c\) Kitware, Inc.\n.*All rights reserved.\n.*See LICENSE.txt for details.\n.*\n.*This.*\n.*the.*\n.*PURPOSE.*\n.*\n.*Copyright 2012 Sandia Corporation.\n.*Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,\n.*the U.S. Government retains certain rights in this software.\n.*\n.*=============================================================================/\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright (c) Kitware, Inc.\n\/\/ SPDX-FileCopyrightText: Copyright 2012 Sandia Corporation.\n\/\/ SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov/g' %s

Manual sandia accel

manual Kitware inc

Manual fixups

Manual 14

Replace 15

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\*=========================================================================\n\n.*Program:.*\n.*Module:.*\n\n.*Copyright \(c\) Kitware, Inc.\n.*All rights reserved.\n.*See LICENSE file for details.\n\n.*\n.*\n.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-CLAUSE/g' %s

Manual 16

Removing non-standard file header

cat files.out | xargs -I %s perl -i~ -0777 -pe 's/\/\/ \-\*\- c\+\+.*\n\n//g' %s

Manual removal non standard header

Adding custom sandia and lanl licenses

Fix missing header common core

Manual missing headers

Add missing sandia

cat files.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\/ SPDX-FileCopyrightText.*\n\/\/ SPDX-License-Identifier.*\n\n\/\*\n.*Copyright 2004 Sandia Corporation.\n.*Under.*\n.*license.*\n.*U.*\n.*or.*\n.*statement.*\n \*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright 2004 Sandia Corporation\n\/\/ SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov/g' %s

Adding missing sandia licenses

Adding sandia licenses

Adding missing sandia licenses

Replace sandia

Adding sandia module changes

Use new custom license system

Replace sandia

cat files.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\/ SPDX-FileCopyrightText.*\n\/\/ SPDX-License-Identifier.*\n\/\*-------------------------------------------------------------------------\n.*Copyright 2009 Sandia Corporation.\n.*Under the terms of Contract DE-AC04-94AL85000.*\n.*the.*\n-------------------------------------------------------------------------\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright 2009 Sandia Corporation\n\/\/ SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov/g' %s

Adding missing sandia licenses

Sandia final fixup license

Adding missing sandia license

Fix remaining sandia license

Manual LANL license

Replace sandia BSD

cat files.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\/ SPDX-FileCopyrightText.*\n\/\/ SPDX-License-Identifier.*\n\/\*----------------------------------------------------------------------------\n.*Copyright \(c\) Sandia Corporation\n.*See Copyright.txt.*\n.*----------------------------------------------------------------------------\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright \(c\) Sandia Corporation\n\/\/ SPDX-License-Identifier: BSD-3-Clause/g' %s

Replace Kitware, Inc.

 cat files.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\*=========================================================================\n\n.*Program.*\n.*Module.*\n\n.*Copyright \(c\) Kitware, Inc.\n.*All rights reserved.\n.*See Copyright.txt.*\n\n.*This.*\n.*the.*\n.*PURPOSE.*\n\n=========================================================================\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright \(c\) Kitware, Inc.\n\/\/ SPDX-License-Identifier: BSD-3-Clause/g' %s

Manual ParaView license

Remove useless license statement in cmake files

Manual licenses

Replace lanl

 cat files.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\/ SPDX-FileCopyrightText.*\n\/\/ SPDX-License-Identifier.*\n\n\/\*.*\n.*\n.*Copyright \(c\) 2000.*2009.*Lawrence Livermore National Security, LLC\n.*Produced at the Lawrence.*\n.*LLNL-CODE-400124\n.*All rights reserved.\n.*\n.*This.*\n.*see.*\n.*file.*\n.*http.*\n.*\n.*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright \(c\) 2000 - 2009, Lawrence Livermore National Security, LLC\n\/\/ SPDX-License-Identifier: BSD-3-Clause/g' %s

Manual LANL

NVIDIA license impact

Manual Indiana

Manual copyrights

More manual licenses

More manual licenses

Replace Atamai

 cat a.out  | xargs -I %s perl -i~ -0777 -pe 's/\A\/\/ SPDX-FileCopyrightText.*\n\/\/ SPDX-License-Identifier.*\n\/\*.*\n\n.*Copyright \(c\) 2006 Atamai, Inc.\n\nUse.*\nbinary.*\nconditions.*\n\n1.*\n   form.*\n   the.*\n   license.*\n\n2.*\n   notice.*\n   in.*\n   distribution.*\n\n3.*\n   and.*\n\nTHE.*\nWITHOUT.*\nTHE.*\nPURPOSE.*\nMODIFY.*\nBE.*\n.*\nOR.*\nTHE.*\nPOSSIBILITY.*\n\n.*\*\//\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-FileCopyrightText: Copyright \(c\) 2006 Atamai, Inc.\n\/\/ SPDX-License-Identifier: BSD-3-Clause/g' %s

Manual MIT

Manual licenses

Xdmf2 License

PLY license

Manual VRML licenses

replace Netcdf license

Manual OpenXR license

Manual Licenses

Example Licenses manual

Manual Copyrights and licenses

Manual licensing

Removing empty lines

Manual licenses

Manual final pass

Manual Dicom

Replace all cxx without copyright info

find .  -name "*.cxx" -exec grep -L "SPDX" {} \; | grep -v ThirdParty | grep -v Utilities > files.out

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\A(.*)\n/\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-Clause\n$1\n/g' %s

Replace all header missing license

find .  -name "*\.h" -exec grep -L "SPDX" {} \; | grep -v ThirdParty | grep -v Utilities > files.out

cat files.out |  xargs -I %s perl -i~ -0777 -pe 's/\A(.*)\n/\/\/ SPDX-FileCopyrightText: Copyright \(c\) Ken Martin, Will Schroeder, Bill Lorensen\n\/\/ SPDX-License-Identifier: BSD-3-Clause\n$1\n/g' %s

Manual from build

Add missing license

Replace copyright.txt

Remove license files

Manual fixes found by building

Fix header testing

Add license in vtkEncodeString

Manual new filters

Review JF

This mapper may take advantage of the vtkAdaptiveDataSetSurfaceFilter to
extract and render only the part of the HTG in the camera frustum.
This version only works on 2D as of today.

The RenderingVolumeOpenGL2 module was in the Rendering group,
but not RenderingContextOpenGL2 or DomainsChemistryOpenGL2.
As a result, the latter two modules were not part of the
default build, even though they implement the backends for
modules that are part of the default build (DomainsChemistry,
RenderingContext2D, Charts, etc).

The fact that the VTK Python wheels provided modules without
backends has caused trouble for several users.

The RenderingOpenGL2 module itself was not part of the Rendering
group, either, but seems to have been brought in as a dependency
of RenderingVolumeOpenGL2.

The RenderingVolumeOpenGL2 module was in the Rendering group,
but not RenderingContextOpenGL2 or DomainsChemistryOpenGL2.
As a result, the latter two modules were not part of the
default build, even though they implement the backends for
modules that are part of the default build (DomainsChemistry,
RenderingContext2D, Charts, etc).

The fact that the VTK Python wheels provided modules without
backends has caused trouble for several users.

The RenderingOpenGL2 module itself was not part of the Rendering
group, either, but seems to have been brought in as a dependency
of RenderingVolumeOpenGL2.

Add two options to vtkProperty, and link them to OSPray:

* anisotropy (between 0 and 1) that controls the strength of the anisotropy.
It will be possible to use a texture to hold this value (WIP).

* rotation (between 0 and 1) that rotate the direction of the anisotropy
(ie. the tangent) around the normal counter-clockwise.
A value of 1 correspond to a rotation of 2*PI. If needed, the rotation is done is
the fragment shader because it allows the user to pass the rotaion as a
texture value.

Move RenderingCpre Cxx tests that require OpenGL2 into OpenGL2
testing directory.

These interactors are based on their native
UI but do not have any requirement on OpenGL.
Move them into this new directory so that Vulkan
or other toolkits can make use of them.

While at it remove the use of Xt as it is no longer
really used and instead simplify the code and go directly
to Xlib.