[vtkusers] HiDPI Support for vtkRenderWindow

[Max-Heinrich Laves]

Hello List,

I am using VTK 7.0 on OS X 10.11 on a MacBook Pro with HiDPI resolution (Retina). When creating a vtkRenderWindow, everything looks blurry and pixelated due to hidpi upscaling. However, I saw screenshots of users with full retina support (e.g. http://stackoverflow.com/questions/22441782/vtk-camera-pose-from-opencvs-estimated-pose-from-solvepnp ). I compiled VTK with the following CMake command:

cmake -G "Unix Makefiles" -DVTK_USE_COCOA:BOOL=ON -DCMAKE_INSTALL_PREFIX=/opt/vtk -DBUILD_SHARED_LIBS:BOOL=OFF -DCMAKE_PREFIX_PATH:PATH=/Users/max/Qt/5.5/clang_64/ -DVTK_USE_SYSTEM_ZLIB:BOOL=ON -DVTK_Group_Qt:BOOL=ON -DVTK_QT_VERSION:STRING=5 ..

How can I get VTK windows with HiDPI support? I couldn’t figure it out, but it’s obviously possible.

Thanks in advance!
Max