Portable Engine

This game engine was created over my Fall 2020 semester. I had two goals:

• Create a "game engine" that had tools and affordances (i.e. clicking on objects to select them, 3D gizmos)
• Have the engine support multiple platforms and Graphics APIs

Adding features and supporting multiple platforms are often in direct conflict with each other. However, I was able to have the codebase support OpenGL-Windows, OpenGL-Web, and DirectX-Windows (check the DirectXImpl branch for that) as well as have cool stuff like an inspector and an entity-component-system architecture via entt. Other features I want to add are:

• Support for OpenGL-Android
• Support for DirectX 12 and Vulkan
• (Done) Have textures, instead of solid colors
• (Done) VR and AR support

You can see an earlier version of the engine through a web build here

Building

PortableEngine uses CMake as a build system and vcpkg as a package manager.

You will need at least the following packages from vcpkg:

All platforms

• glew
• glm
• entt
• assimp
• imgui (with opengl3, SDL2, DirectX11, docking-experimental, and Win32 features enabled)
• stb

Windows

• openxr-loader
• directxtk

Linux

• SDL2
• Additional packages may be needed from your OS' package manager (ex. apt)

Once all packages are downloaded from vcpkg, please run

cmake -S . -B build/ -DCMAKE_TOOLCHAIN_FILE={path_to_vcpkg_root}/scripts/buildsystems/vcpkg.cmake

Running

The Portable Engine executable can be configured with command line options on startup.

• -p: Specifies platform. Possible values are:
• • Windows
• • Linux
• • Web
• -g: Specifies graphics API. Possible values are:
• • OpenGL
• • DX11
• -xr: Indicates whether to try to use the OpenXR runtime to create a VR scene (Windows only). If absent, the engine loads without XR.