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github.com/PixarAnimationStudios/OpenSubdiv

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github.com/PixarAnimationStudios/OpenSubdiv

  • v0.0.0-20230914191906-7d0ab5530fee
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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.

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Prerequisite

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

  • General requirements:
LibMin VersionNote
CMake3.12Required
  • Osd optional requirements:
LibMin VersionNote
CUDA4.0cuda backend
TBB2018TBB backend
OpenCL1.1CL backend
DX11 SDKDX backend
Metal1.2Metal backend
  • Requirements for building optional examples:
LibMin VersionNote
GLFW3.0.0GL examples
Ptex2.0ptex 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 and GLFW

make sure GLFW install directories are configured as follows:

   ${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)

cmake ^
    -G "Visual Studio 15 2017 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 "GLFW_LOCATION=*YOUR GLFW INSTALL LOCATION*" ^
    ..

cmake --build . --config Release --target install

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 GLFW_LOCATION="*YOUR GLFW INSTALL LOCATION*" \
      ..

cmake --build . --config Release --target install

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*" \
      ..

cmake --build . --config Release --target install

iOS

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 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]
-DOSD_CUDA_NVCC_FLAGS=[CUDA options, e.g. --gpu-architecture]

-DPTEX_LOCATION=[path to Ptex]
-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

FAQs

Package last updated on 14 Sep 2023

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