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Building and Using Jolt Physics

Build Types

Each platform supports multiple build targets

  • Debug - Debug version of the library, turns on asserts
  • Release - Release version of the library, no asserts but includes profiling support and can draw the world and simulation properties
  • ReleaseASAN - As Release but turns on Address Sanitizer (clang only) to find bugs
  • ReleaseUBSAN - As Release but turns on Undefined Behavior Sanitizer (clang only) to find bugs
  • ReleaseCoverage - As Release but turns on Coverage reporting (clang only) to find which areas of the code are not executed
  • Distribution - Shippable version of the library, turns off all debugging support

Includes

The Jolt headers don't include Jolt/Jolt.h. Always include Jolt/Jolt.h before including any other Jolt header. You can use Jolt/Jolt.h in your precompiled header to speed up compilation.

Defines

There are a number of user configurable defines that turn on/off certain features:

  • JPH_PROFILE_ENABLED - Turns on the internal profiler.
  • JPH_EXTERNAL_PROFILE - Turns on the internal profiler but forwards the information to a user defined external system (see Profiler.h).
  • JPH_DEBUG_RENDERER - Adds support to draw lines and triangles, used to be able to debug draw the state of the world.
  • JPH_DISABLE_TEMP_ALLOCATOR - Disables the temporary memory allocator, used mainly to allow ASAN to do its job.
  • JPH_FLOATING_POINT_EXCEPTIONS_ENABLED - Turns on division by zero and invalid floating point exception support in order to detect bugs (Windows only).
  • JPH_USE_SSE4_1 - Enable SSE4.1 CPU instructions (x64 only)
  • JPH_USE_SSE4_2 - Enable SSE4.2 CPU instructions (x64 only)
  • JPH_USE_F16C - Enable half float CPU instructions (x64 only)
  • JPH_USE_LZCNT - Enable the lzcnt CPU instruction (x64 only)
  • JPH_USE_TZCNT - Enable the tzcnt CPU instruction (x64 only)
  • JPH_USE_AVX - Enable AVX CPU instructions (x64 only)
  • JPH_USE_AVX2 - Enable AVX2 CPU instructions (x64 only)
  • JPH_USE_FMADD - Enable fused multiply add CPU instructions (x64 only)

Logging & Asserting

To override the default trace and assert mechanism install your own custom handlers in Trace and AssertFailed (see IssueReporting.h).

Building

Windows 10+ (CL - Default compiler)

  • Download Visual Studio 2022 (Community or other edition)
  • Download CMake 3.15+ (https://cmake.org/download/)
  • Run cmake_vs2022_cl.bat
  • Open the resulting project file VS2022_CL\JoltPhysics.sln
  • Compile and run either 'Samples' or 'UnitTests'

Windows 10+ (Clang compiler)

  • Download Visual Studio 2022 (Community or other edition)
  • Make sure to install "C++ Clang Compiler for Windows 11.0.0+" and "C++ Clang-cl for v142+ build tools (x64/x86)" using the Visual Studio Installer
  • Download CMake 3.15+ (https://cmake.org/download/)
  • Run cmake_vs2022_clang.bat
  • Open the resulting project file VS2022_Clang\JoltPhysics.sln
  • Compile and run either 'Samples' or 'UnitTests'

Windows 10+ (Universal Windows Platform)

  • Download Visual Studio 2022+ (Community or other edition)
  • Make sure to install "Universal Windows Platform development" using the Visual Studio Installer
  • Download CMake 3.15+ (https://cmake.org/download/)
  • Run cmake_vs2022_uwp.bat
  • Open the resulting project file VS2022_UWP\JoltPhysics.sln
  • Compile and run 'UnitTests'

Linux (Debian flavor, x64 or ARM64)

  • Install clang (apt-get install clang)
  • Install cmake (apt-get install cmake)
  • Run: ./cmake_linux_clang_gcc.sh
  • Go to the Linux_Debug folder
  • Run: make -j 8 && ./UnitTests

Android

  • Install Android Studio 2020.3.1+ (https://developer.android.com/studio/)
  • Open the 'Android' folder in Android Studio and wait until gradle finishes
  • Select 'Run' / 'Run...' and 'UnitTests'
  • If the screen turns green after a while the unit tests succeeded, when red they failed (see the android log for details)

MacOS

  • Install XCode
  • Download CMake 3.23+ (https://cmake.org/download/)
  • Run: ./cmake_xcode_macos.sh
  • This will open XCode with a newly generated project
  • Build and run the project

Note that you can also follow the steps in the 'Linux' section if you wish to build without XCode.

iOS

  • Install XCode
  • Download CMake 3.23+ (https://cmake.org/download/)
  • Run: ./cmake_xcode.ios.sh
  • This will open XCode with a newly generated project
  • Build and run the project (note that this will only work in the simulator as the code signing information is not set up)

Doxygen on Windows

Documentation can be generated through doxygen: