[vtkusers] vtkGPUVolumeRaycastMapper in the webserver

[Emptystack]

Hello everyone, 

I have write a dynamic web project based on Browser/Server architecture. On
the server side, I using the vtkFixedPointVolumeRaycastMapper(software
raycaster on the CPU) and vtkGPUVolumeRaycastMapper(performs ray casting on
the GPU) to implement the rendering pipeline. The
vtkFixedPointVolumeRaycastMapper works well when the client's request
arrives. But when  I using the vtkGPUVolumeRaycastMapper , something
unspected happended: When I send the first request (from our developed HTML5
web-based medical image viewer) to the web server, everything works well and
we can also get the rendering image. But when I  send  a request(such as
rotate) to the web server again, my web server stopped. In a word, In a java
servlet environment, the first request to this method works very well, but
the second request failed. 

The GPU accelerated mode cannot worked in the web server, I dont't know why
this happened? Have anyone can give me some advice? 

Many thanks! 



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