A portable modern OpenGL Game-Engine with focus on PBR

Project Goal

The PhotonBox Engine aims to be an open source resource for people interested in computer graphics. The goal is to create a clean and readable codebase, whilst still maintaining good performance and a high graphical fidelity. An Editor is currently not planned as I am still exploring the possibilities for state based GUI solutions.

Rendering

• Deferred/Forward Rendering
• Point lights, Directional lights, Spot lights
• SkyBox/Enviroment Mapping
• Parallax cubeMap correction
• Cook Torrance BRDF shader
  • Albedo Map
  • Normal Map
  • Roughness Map
  • Metallic Map
  • Ambient Occclusion Map
  • Emission Map
• Dynamic Irradiance & Specular-Convolution generation
• Post Processing List
  • Eye adaptation
  • Bloom
  • Tone mapping
  • SSAO
  • SSReflections
  • Temporal anti aliasing
• Transparent/Cutout rendering
• Shadow mapping
• Contact shadows
• Volumetric Fog
• Text rendering

Systems

• Component system
• Scene system
• Generic Materials
• Lightprobe volumes
• Resource caching
• Async resource loading
• Shader hot reload
• PhysX partial integration
• ImGui integration

Project Setup

Requirements

• CMake 3.16^
• OpenGL 4.1

Windows" class="reference-link"> Windows

Generate visual studio project files:

git clone https://github.com/Haeri/PhotonBox.git --recursive
cd PhotonBox
./scripts/generate_project_win.bat

_{Make sure to open the Visual Studio project as administrator, as it needs to perform copy operatiosn to make resources files available to the binaries.}

Linux" class="reference-link"> Linux

Generate make files:

git clone https://github.com/Haeri/PhotonBox.git --recursive
cd PhotonBox
sudo apt update
sudo apt install -y mesa-common-dev mesa-utils libgl1-mesa-dev cmake curl unzip tar 
./scripts/generate_project_linux.sh

macOS" class="reference-link"> macOS

Generate xcode project files:

git clone https://github.com/Haeri/PhotonBox.git --recursive
cd PhotonBox
./scripts/generate_project_mac.sh

Media

Interiour

_{(Assets not distributed)}

Automotive

Roadmap

RENDERING

• Instanced rendering
• Deferred decals
• GTAO
• Anisotropic filtering

GENERAL

• Precompile shader
• Abstraction layer over OpenGL
• Precompiled headers
• Switch to dynamic library compilation
• Decoupling asset conversion from engine
• Doxygen integration for documentation

OPTIMIZATION

• Uniform buffer
• SIMD math