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README.md

OpenXR™ Software Development Kit (SDK) Project

This repository contains OpenXR headers, as well as source code and build scripts for the OpenXR loader. It contains all generated source files and headers pre-generated for minimum dependencies.

The authoritative public repository for this project is located at https://github.com/KhronosGroup/OpenXR-SDK.

The public repository containing the scripts that generate the files in this repository is located at https://github.com/KhronosGroup/OpenXR-SDK-Source. It hosts the public Issue tracker, and accepts patches (Pull Requests) from the general public. That repository is also where sample code (hello_xr) and API layer source can be found.

Note that this repo is effectively read-only: changes to this repo should be made in the OpenXR-SDK-Source repo instead

Directory Structure

  • BUILDING.md - Instructions for building the projects
  • README.md - This file
  • COPYING.md - Copyright and licensing information
  • CODE_OF_CONDUCT.md - Code of Conduct
  • external/ - External code for projects in the repo
  • include/ - OpenXR header files
  • src/external/jsoncpp - The jsoncpp project source code, an included dependency of the loader.
  • src/loader - OpenXR loader code, including generated code

Building

The project is set up to build using CMake.

(Optional) Building the OpenXR Loader as a DLL

By default, the OpenXR loader is built as a static library on Windows and a dynamic library on other platforms. To specify alternate behavior, define the CMake option DYNAMIC_LOADER, e.g. by adding -DDYNAMIC_LOADER=ON or -DDYNAMIC_LOADER=OFF to your CMake command line.

Windows

Building the OpenXR components in this tree on Windows is supported using Visual Studio 2013 and newer. Before beginning, make sure the appropriate "msbuild.exe" is in your PATH. Also, when generating the solutions/projects using CMake, be sure to use the correct compiler version number. The following table is provided to help you:

Visual Studio Version Number
Visual Studio 2013 12
Visual Studio 2015 14
Visual Studio 2017 15

Specific sample command lines for building follow. If you're already familiar with the process of building a project with CMake, you may skim or skip these instructions.

Windows 64-bit

First, generate the 64-bit solution and project files using CMake:

mkdir build\win64
cd build\win64
cmake -G "Visual Studio [Version Number] Win64" ..\..

Finally, open the build\win64\OPENXR.sln in the Visual Studio to build the loader.

Windows 32-bit

First, generate the 32-bit solution and project files using CMake:

mkdir build\win32
cd build\win32
cmake -G "Visual Studio [Version Number]" ..\..

Open the build\win32\OPENXR.sln in the Visual Studio to build the loader.

Linux

The following set of Debian/Ubuntu packages provides all required libs for building for xlib or xcb with OpenGL and Vulkan support.

  • build-essential
  • cmake (of somewhat recent vintage, 3.10+ known working)
  • libgl1-mesa-dev
  • libvulkan-dev
  • libx11-xcb-dev
  • libxcb-dri2-0-dev
  • libxcb-glx0-dev
  • libxcb-icccm4-dev
  • libxcb-keysyms1-dev
  • libxcb-randr0-dev
  • libxrandr-dev
  • libxxf86vm-dev
  • mesa-common-dev

Specific sample command lines for building follow. If you're already familiar with the process of building a project with CMake, you may skim or skip these instructions.

Linux Debug

mkdir -p build/linux_debug
cd build/linux_debug
cmake -DCMAKE_BUILD_TYPE=Debug ../..
make

Linux Release

mkdir -p build/linux_release
cd build/linux_release
cmake -DCMAKE_BUILD_TYPE=Release ../..
make
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