…ches

This update focuses on backporting specific commits related to the
Rendering, OpenVR, and OpenXR modules, aiming to support the ColorizeVolume
module in the Sandbox extension and integrate OpenXR and OpenXRRemoting
capabilities in the SlicerVirtualReality extension.

The selection of backported commits was curated by reviewing changes
in the following VTK modules:
- Rendering/Core
- Rendering/OpenGL2
- Rendering/Volume
- Rendering//VolumeOpenGL
- Rendering/VR
- Rendering/OpenVR
- Rendering/OpenXR
- Rendering/OpenXRRemoting

In addition to these, the backport includes the following improvements:

- Addition of the ForceVerticalTitle option to vtkScalarBarActor
  See Slicer/VTK@c8cfd917 and upstream MR-10306[^1]

- Enhancement to vtkOpenGLPolyDataMapper by adding line opacity control
  See Slicer/VTK@92021a6bc and upstream MR-10307[^2]

During testing, a performance regression in the volume rendering module
was identified, attributable to Kitware/VTK@cff3d9a60 (vtkRenderer: Fix
prop picking in GetZ method). Consequently, this commit has been reverted
from the list of backports. For further details, refer to MR-10391[^3] and
VTK issue 18503[^4], which it was originally intended to address.

[^1]: https://gitlab.kitware.com/vtk/vtk/-/merge_requests/10306
[^2]: https://gitlab.kitware.com/vtk/vtk/-/merge_requests/10307
[^3]: https://gitlab.kitware.com/vtk/vtk/-/merge_requests/10391
[^4]: https://gitlab.kitware.com/vtk/vtk/-/issues/18503


List of VTK changes:

```
$ git shortlog 46201478cd..d5d688b473 --no-merges
Alexy Pellegrini (8):
      [Backport] Add missing SIZE_HINT on vtkImageActor::GetDisplayBounds
      [Backport] Split vtkWin32OpenGLDXRenderWindow initialization
      [Backport] Enable switching from remoting XR runtime to default XR runtime dynamically
      [Backport] Add a utility function to query OpenXR instance version
      [Backport] OpenXR: Add missing EndInitialize in QueryInstanceVersion
      [Backport] VR: enable interaction methods to be overrideable
      [Backport] VR: Add VTKIS_USCALE support in VR interactor style
      [Backport] XR: Move device pose update in interactor

Ben Boeckel (1):
      [Backport] Rendering/VR: make `glew` a public dependency

Franck HOUSSEN (1):
      [Backport] Document FrameBlitMode in vtkOpenGLRenderWindow.

Jaswant Panchumarti (4):
      [Backport] SurfaceWithEdges: Fix mixed geometry rendering
      [Backport] Apply 1 suggestion(s) to 1 file(s)
      [Backport] Glyph3DMapper: Fix display attribute inheritance logic
      [Backport] ReadPixels: Check for errors only when VTK is configured to report errors

Jean-Christophe Fillion-Robin (6):
      Revert "[Backport MR-10450] OpenXRRemoting: Fix windows build using XrCheckOutput instead of XrCheckError"
      Revert "[Backport MR-10450] OpenXR: Improve XrCheckOutput API fixing constness of level parameter"
      Revert "[Backport MR-10449] OpenXRRemoting: Streamline integration as plugin"
      [Backport] OpenXRRemoting: Streamline integration as plugin
      [SlicerVirtualReality] ENH: Update OpenVR json binding to map right and left trigger with triggeraction
      Revert "[Backport] vtkRenderer: Fix prop picking in GetZ method"

Julien Fausty (3):
      [Backport] ABI: fix vtkValueFromString
      [Backport] ABI: fix vtkCompositeSurfaceLICMapper
      [Backport] ABI: fix vtkOpenGLBatchedPolyDataMapper

Julien Schueller (1):
      [Backport] vtkWin32OpenGLDXRenderWindow: Fix missing include

Lucas Gandel (16):
      [Backport] Support any texture with interpolate scalars
      [Backport] Add tests for texture coloring with interpolated scalars
      [Backport] Support both texture and interpolated scalars in composite polydata mapper
      [Backport] Remove the TestBlockOpacity test
      [Backport] Support 4-component RGBA inputs for multivolume
      [Backport] Test multivolume with RGBA inputs
      [Backport] Update vtkMultiVolume doc to mention RGBA support
      [Backport] Test vtkMultiVolume with RGBA input and gradient opacity function
      [Backport] Allow volumes to write to the depth buffer
      [Backport] Add VTK::ComputeLighting::Exit tag for volume shader replacement
      [Backport] Allow to specify other formats for the ssao pass depth texture
      [Backport] Allow vtkOpenGLRenderPass subclasses to add information keys efficiently
      [Backport] Support SSAO for volumes
      [Backport] Expose volume opacity threshold in SSAO pass
      [Backport] Test SSAO pass with GPU raycast volume mapper
      [Backport] OpenXR: Support depth buffer composition layer

Lucas Givord (1):
      [Backport] vtkOpenGLPolyDataMapper: add line opacity control

LucasGandel (1):
      [Backport] Support both texture and interpolated scalars in GLES polydata mapper

Mathieu Westphal (2):
      [Backport] Dolly3D: Remove incorrect check in Y axis only
      [Backport] OpenXRRemoting: Using XrCheckOutput

Michael Migliore (4):
      [Backport] Use index array for point gaussians
      [Backport] Use quad instead of triangle to bound the gaussian splat
      [Backport] Rename scale option and scale in the shader
      [Backport] Fix normal mapping with edge visibility

Mohamed Mssaouri (2):
      [Backport] Add teleportation to VR
      [Backport] Move teleportation to interaction modes

Paulo Roberto Moura de Carvalho (1):
      [Backport] vtkRenderer: Fix prop picking in GetZ method

Robert Lexmann (1):
      [Backport] RenderingOpenGL2: Fixed final blending of vtkOrderIndependentTranslucentPass.

Sankhesh Jhaveri (1):
      [Backport] rendering: Do not offset vertices for drawing polygon edges

Scott Wittenburg (1):
      [Backport] rendering: Add ForceVerticalTitle option to vtkScalarBarActor

Thibault Bruyère (1):
      [Backport] Add volume clipping to vtkVRInteractorStyle

Tiffany Chhim (1):
      [Backport] VR Renderer: Add cross markers at tip of controllers
```