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Programming language: C++
Tags: Graphics    

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README

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 and OSX Windows
master Linux and OSX Build Status Windows Build Status
dev Linux Build Status Windows Build Status

Documents

Forum

Prerequisite

For complete information, please refer OpenSubdiv documents: Building with CMake

  • General requirements:
Lib Min Version Note
CMake 2.8.6 Required
  • Osd optional requirements:
Lib Min Version Note
GLEW 1.9.0 GL backend (Win/Linux only)
CUDA 4.0 cuda backend
TBB 4.0 TBB backend
OpenCL 1.1 CL backend
DX11 SDK DX backend
Metal 1.2 Metal backend
  • Requirements for building optional examples:
Lib Min Version Note
GLFW 3.0.0 GL examples
Ptex 2.0 ptex viewers
Zlib (required for Ptex under windows)
  • Requirements for building documentation:
Lib
Docutils
Doxygen
Graphviz

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

macOS

cmake -G Xcode -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

iOS

  • Because OpenSubdiv uses a self-built build tool (stringify) as part of the build process, you'll want to build for macOS and build the stringify target
SDKROOT=$(xcrun --sdk iphoneos --show-sdk-path) 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 STRINGIFY_LOCATION="*YOUR MACOS BUILD LOCATION*"/bin/stringify \
      -D CMAKE_TOOLCHAIN_FILE=../cmake/iOSToolchain.cmake -G Xcode \
      ..
  • This will produce an "OpenSubdiv.xcodeproj" that can be open and the targets 'mtlViewer' and 'mtlPtexViewer' (if NO_PTEX is ommitted and libPtex.a is installed in the iOS SDK) that can be run

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)]
-DCMAKE_TOOLCHAIN_FILE=[toolchain file for crossplatform builds]

-DCUDA_TOOLKIT_ROOT_DIR=[path to CUDA Toolkit]
-DPTEX_LOCATION=[path to Ptex]
-DGLEW_LOCATION=[path to GLEW]
-DGLFW_LOCATION=[path to GLFW]
-DSTRINGIFY_LOCATION=[path to stringify utility]

-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
-DNO_METAL=1      // disable Metal


*Note that all licence references and agreements mentioned in the OpenSubdiv README section above are relevant to that project's source code only.