This repository integrates OSPRay as a CPU volume rendering backend in VisIt. The details of this implementation has been described in our EGPGV paper: VisIt-OSPRay: Toward an Exascale Volume Visualization System. In particular, this project was sponsored by Intel and the CCMSC/PSAAP II Project for visualizing exscale simulation data.
You can use the build_visit script to build OSPRay and its dependencies. In order to enable ospray, you need to add the --ospray option to your build_visit:
./build_visit --ospray ...
Because OSPRay depends on TBB, ISPC and Embree, you might want to also enable --ispc, --embree and --tbb. If you have all these libraries downloaded alread, you can use alternative paths instead:
--alt-tbb-dir <path-to-your-tbb>
--alt-ispc-dir <path-to-your-ispc>
--alt-embree-dir <path-to-your-embree>
Currently this repository is compatable with visit trunk revision 33734. For details about building VisIt, please go
to the Wiki page.
Path: .
URL: http://visit.ilight.com/svn/visit/trunk/src
Repository Root: http://visit.ilight.com/svn/visit
Repository UUID: 18c085ea-50e0-402c-830e-de6fd14e8384
Revision: 33734
Node Kind: directory
Schedule: normal
Last Changed Author: brugger
Last Changed Rev: 33734
Last Changed Date: 2018-10-30 03:06:51 -0700 (Tue, 30 Oct 2018)
This repository only contains all the file I changed in VisIt source. Therefore the best way to apply those changes is to create a patch file.
We can create a patch using diff on linux:
./exclude/tools/makeref.sh /path/to/visit/src/
diff -Naur src-ref src > patch.txt
cd /path/to/visit/src/
patch -p1 < ../working/patch.txt
If you want to undo the change, you can revert a patch by this command:
cd /path/to/visit/src/
patch -p1 -R < ../working/patch.txt
Remember to revert the previous patch before applying a new one
I have also provided a script for directly copying and removing files into the visit source tree. If you want to use this option, you can run the following script:
Copying all the cmake and sh files
./deploy.sh <visit-source> cmake
Copying all the source and sh files
./deploy.sh <visit-source> source
Remove unnecessary files
./deploy.sh <visit-source> clean
If there are some files should be removed from VisIt source due to some renaming. You can find the file lists
in exclude/tools/removelist.txt file. However it will not cause any problem if those files are not removed.
Currently in this branch I have also implemented a version to test the new OSPRay distributed framebuffer. In order to test this functionality, you need to set the environmental variable VTKOSPRAY_ARGS to be "--osp:mpi-distribute".