mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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Most GL implementations support a maximum of 4 transform feedback buffer bindings. With the addition of 1st and 2nd derivative evaluation up to 6 bindings might be required, i.e. dst, du, dv, duu, duv, dvv. This change extends the GLXFB Evaluator interface to allow a client to specialize the evaluator when it is known that (at least) the 1st derivative and 2nd derivative outputs are interleaved together into shared buffers. When this option is used, the maximum number of transform feedback buffer bindings can be reduced to 3 instead of 6. |
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|---|---|---|
| cmake | ||
| documentation | ||
| examples | ||
| opensubdiv | ||
| regression | ||
| tutorials | ||
| .gitignore | ||
| .travis.yml | ||
| appveyor.yml | ||
| CMakeLists.txt | ||
| LICENSE.txt | ||
| NOTICE.txt | ||
| OpenSubdivCLA_corporate.pdf | ||
| OpenSubdivCLA_individual.pdf | ||
| README.md | ||
OpenSubdiv
OpenSubdiv is a set of open source libraries that implement high performance subdivision surface (subdiv) evaluation on massively parallel CPU and GPU architectures. This codepath is optimized for drawing deforming subdivs with static topology at interactive framerates. The resulting limit surface matches Pixar's Renderman to numerical precision.
OpenSubdiv is covered by the Apache license, and is free to use for commercial or non-commercial use. This is the same code that Pixar uses internally for animated film production. Our intent is to encourage high performance accurate subdiv drawing by giving away the "good stuff".
Feel free to use it and let us know what you think.
For more details about OpenSubdiv, see Pixar Graphics Technologies.
| Linux | Windows | |
|---|---|---|
| master |  |
|
| dev |  |
Documents
- [User Documents] (http://graphics.pixar.com/opensubdiv/docs/intro.html)
- [Doxygen API Documents] (http://graphics.pixar.com/opensubdiv/docs/doxy_html/index.html)
- [Release Notes] (http://graphics.pixar.com/opensubdiv/docs/release_notes.html)
Forum
- [OpenSubdiv Google Groups] (https://groups.google.com/forum/embed/?place=forum/opensubdiv)
Prerequisite
For complete information, please refer OpenSubdiv documents: [Building with CMake] (http://graphics.pixar.com/opensubdiv/docs/cmake_build.html)
- General requirements:
| Lib (URL) | Min Version | Note |
|---|---|---|
| CMake http://www.cmake.org |
2.8.6 | Required |
- Osd optional requirements:
| Lib (URL) | Min Version | Note |
|---|---|---|
| GLEW http://glew.sourceforge.net |
1.9.0 | GL backend (Win/Linux only) |
| CUDA http://developer.nvidia.com/cuda-toolkit |
4.0 | cuda backend |
| TBB https://www.threadingbuildingblocks.org |
4.0 | TBB backend |
| OpenCL http://www.khronos.org/opencl |
1.1 | CL backend |
| DX11 SDK http://www.microsoft.com/download/details.aspx?id=6812 |
DX backend |
- Examples/Documents optional requirements:
| Lib (URL) | Min Version | Note |
|---|---|---|
| GLFW http://www.glfw.org |
3.0.0 | GL examples |
| Ptex https://github.com/wdas/ptex |
2.0 | ptex viewers |
| Zlib http://www.zlib.net |
(required for Ptex under windows) | |
| Docutils http://docutils.sourceforge.net |
documents | |
| Doxygen http://www.doxygen.org |
documents |
Build example to run glViewer and other example programs with minimal dependency
All platforms:
- Install cmake, GLFW and GLEW (GLEW is not required on OSX)
make sure GLEW and GLFW install directories configured as follows:
${GLEW_LOCATION}/include/GL/glew.h
${GLEW_LOCATION}/lib/libGLEW.a (linux)
${GLEW_LOCATION}/lib/glew32.lib (windows)
${GLFW_LOCATION}/include/GLFW/glfw3.h
${GLFW_LOCATION}/lib/libglfw3.a (linux)
${GLFW_LOCATION}/lib/glfw3.lib (windows)
- Clone OpenSubdiv repository, and create a build directory.
git clone https://github.com/PixarAnimationStudios/OpenSubdiv
mkdir build
cd build
Windows (Visual Studio)
- run cmake:
"c:/Program Files (x86)/CMake/bin/cmake.exe" ^
-G "Visual Studio 12 Win64" ^
-D NO_PTEX=1 -D NO_DOC=1 ^
-D NO_OMP=1 -D NO_TBB=1 -D NO_CUDA=1 -D NO_OPENCL=1 -D NO_CLEW=1 ^
-D "GLEW_LOCATION=*YOUR GLEW INSTALL LOCATION*" ^
-D "GLFW_LOCATION=*YOUR GLFW INSTALL LOCATION*" ^
..
- Open OpenSubdiv.sln in VisualStudio and build.
Linux
cmake -D NO_PTEX=1 -D NO_DOC=1 \
-D NO_OMP=1 -D NO_TBB=1 -D NO_CUDA=1 -D NO_OPENCL=1 -D NO_CLEW=1 \
-D GLEW_LOCATION="*YOUR GLEW INSTALL LOCATION*" \
-D GLFW_LOCATION="*YOUR GLFW INSTALL LOCATION*" \
..
make
OSX
cmake -D NO_PTEX=1 -D NO_DOC=1 \
-D NO_OMP=1 -D NO_TBB=1 -D NO_CUDA=1 -D NO_OPENCL=1 -D NO_CLEW=1 \
-D GLFW_LOCATION="*YOUR GLFW INSTALL LOCATION*" \
..
make
Useful cmake options and environment variables
-DCMAKE_BUILD_TYPE=[Debug|Release]
-DCMAKE_INSTALL_PREFIX=[base path to install OpenSubdiv]
-DCMAKE_LIBDIR_BASE=[library directory basename (default: lib)]
-DCUDA_TOOLKIT_ROOT_DIR=[path to CUDA Toolkit]
-DPTEX_LOCATION=[path to Ptex]
-DGLEW_LOCATION=[path to GLEW]
-DGLFW_LOCATION=[path to GLFW]
-DNO_LIB=1 // disable the opensubdiv libs build (caveat emptor)
-DNO_EXAMPLES=1 // disable examples build
-DNO_TUTORIALS=1 // disable tutorials build
-DNO_REGRESSION=1 // disable regression tests build
-DNO_PTEX=1 // disable PTex support
-DNO_DOC=1 // disable documentation build
-DNO_OMP=1 // disable OpenMP
-DNO_TBB=1 // disable TBB
-DNO_CUDA=1 // disable CUDA
-DNO_OPENCL=1 // disable OpenCL
-DNO_OPENGL=1 // disable OpenGL
-DNO_CLEW=1 // disable CLEW wrapper library