Hi everyone,
I am implementing a volume rendering Interaction feature using vtkImageData and vtkGPUVolumeRayCastMapper, and it works well on Windows & Normal PCs.
Until recently, when I try to run it on MacBook Windows（MacBook Pro Parallel Desktop）, the volume displays none in the most circumstances, even if it displays partly the volume sometimes, “ghost shadows“ would be following while rotating the space.
At first, I wonder if it is the parallel desktop or macbook graphics that are not working with vtk Volume rendering. Then I try to use 3D slicer rendering a Volume, and it works just fine.
Now I realized that there must be something in 3D slicer different from how I coded in terms of volume rendering. One thing can be certain is that my code did not really fully utilize the Mac graphic resources. So, I tried to use vtkFixedPointVolumeRayCastMapper(only use CPU) instead of vtkGPUVolumeRayCastMapper, it finally displays all on MacBook Windows（MacBook Pro Parallel Desktop）, however, it interactes with unexpectedly high latency.
I am not sure that if my guesses were right: 
maybe I need to resample this image to lower its resource consumption 
maybe I need to find the trick(if there is) that how 3D slice smarterly utialized graphic resources in terms of vtk volume rendering.
Help me please!