Improve depth precision

[Schneegans]

• [x] Implement reverse infinite projection in OpenSG
• [x] Clear depth to 0.
• [x] Port of csp-anchor-labels
• [x] Port of csp-atmospheres
• [x] Port of csp-custom-web-ui
• [x] Port of csp-lod-bodies
• [x] Port of csp-measurement-tools
• [x] Port of csp-rings
• [x] Port of csp-satellites
• [x] Port of csp-sharad
• [x] Port of csp-simple-bodies
• [x] Port of csp-stars
• [x] Port of csp-trajectories
• [x] Port of csp-vr-accessibility
• [x] Port of csp-wms-overlays
• [x] Port shadows
• [x] Fix the graphical atmosphere test
• [x] Port HDR Mode
• [x] Test VR

[coveralls]

Pull Request Test Coverage Report for Build 2614557638

• 7 of 34 (20.59%) changed or added relevant lines in 13 files are covered.
• 24 unchanged lines in 19 files lost coverage.
• Overall coverage decreased (-0.01%) to 2.995%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
plugins/csp-satellites/src/Satellite.cpp	0	1	0.0%
plugins/csp-stars/src/Stars.cpp	0	1	0.0%
plugins/csp-wms-overlays/src/TextureOverlayRenderer.cpp	0	1	0.0%
src/cs-graphics/GltfLoader.cpp	0	1	0.0%
src/cs-graphics/ToneMappingNode.cpp	0	1	0.0%
plugins/csp-lod-bodies/src/TileRenderer.cpp	0	2	0.0%
plugins/csp-rings/src/Ring.cpp	0	2	0.0%
plugins/csp-sharad/src/Sharad.cpp	0	2	0.0%
src/cs-graphics/internal/gltfmodel.cpp	0	2	0.0%
src/cs-core/GraphicsEngine.cpp	0	3	0.0%
<!--	Total:	7	34	20.59%	-->

Files with Coverage Reduction	New Missed Lines	%
plugins/csp-anchor-labels/src/AnchorLabel.cpp	1	0%
plugins/csp-lod-bodies/src/Frustum.cpp	1	0%
plugins/csp-measurement-tools/src/DipStrikeTool.cpp	1	0%
plugins/csp-measurement-tools/src/EllipseTool.cpp	1	0%
plugins/csp-measurement-tools/src/FlagTool.cpp	1	0%
plugins/csp-trajectories/src/SunFlare.cpp	1	0%
plugins/csp-trajectories/src/Trajectory.cpp	1	0%
plugins/csp-vr-accessibility/src/FloorGrid.cpp	1	0%
plugins/csp-web-api/src/Plugin.cpp	1	0%
plugins/csp-wms-overlays/src/TextureOverlayRenderer.cpp	1	0%
<!--	Total:	24		-->

Totals
Change from base Build 2614241788:	-0.01%
Covered Lines:	491
Relevant Lines:	16393

---

💛 - Coveralls

[JonasGilg]

Something broke OpenSG.

Building and installing opensg-1.8 ...

-- Building for: Visual Studio 15 2017
-- Selecting Windows SDK version 10.0.17763.0 to target Windows 10.0.19044.
-- The CXX compiler identification is MSVC 19.16.27048.0
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenGL: opengl32
-- Found GLUT: C:/C++/cs-gh/install/windows-externals-Release/lib/freeglut.lib
CMake Error at OSGBase/CMakeLists.txt:20 (target_precompile_headers):
  Unknown CMake command "target_precompile_headers".

-- Configuring incomplete, errors occurred!
See also "C:/C++/cs-gh/build/windows-externals-Release/opensg-1.8/CMakeFiles/CMakeOutput.log".
Errors occurred!

[JonasGilg]

Something broke OpenSG.

Building and installing opensg-1.8 ...

-- Building for: Visual Studio 15 2017
-- Selecting Windows SDK version 10.0.17763.0 to target Windows 10.0.19044.
-- The CXX compiler identification is MSVC 19.16.27048.0
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x86/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenGL: opengl32
-- Found GLUT: C:/C++/cs-gh/install/windows-externals-Release/lib/freeglut.lib
CMake Error at OSGBase/CMakeLists.txt:20 (target_precompile_headers):
  Unknown CMake command "target_precompile_headers".

-- Configuring incomplete, errors occurred!
See also "C:/C++/cs-gh/build/windows-externals-Release/opensg-1.8/CMakeFiles/CMakeOutput.log".
Errors occurred!

Nevermind, somhow a wrong CMake version got onto my system ...