π‘ Lux-GI
Hybrid GI solution, based on DDGI ( include Ray-Tracing and SDF-Tracing )
The project is a Hybrid GI solution, partly inspired by Lumen and DDGI. The main core idea is to provide a complete GI solution (including Indirect-Light, Infinite-Bounce, Emissive-Lighting, Glossy-Reflection, Shadow, AO) that can run on both Raytracing-supported and non-raytracing hardware. Due to the shortage of time, there are still some performance issues in this project, but as a throwaway, I believe it can provide some new ideas to most of the people who are interested in GI.
Left is SDF-On, Right is Raytracing-On
Showcase
Document
Main Features
- Hybrid rendering and Global Illumination
- using Raytracing and SDF-Tracing to make DDGI in realtime
- Surface Cache for SDF Material representation
- Deferred-Shading
- SDF/Ray tracing reflection
- SDF/Ray tracing soft shadow
- SVGF denoiser
- Standard PBR with GGX and roughness/metalness
- ECS IoC Container
- Data Driven ECS architecture
- Auto Injection ECS System(based on entt)
- RHI Interface
- Vulkan 1.3
- SPIR-V reflection
Compile
- Windows
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- Click gen_build_win.bat
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- Choose Game as main project
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- Building with RelWithDebInfo
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- Linux
- Not support now
- Mac
- Not support now
Controls in the Game app
- WSAD, QE - movement
- Mouse + Right Button - rotate the camera
- Shift - move faster
Acknowledgments
This project is made with lots of awesome open-source code, they are
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RTXGI, the fully raytracing DDGI implementation.
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cereal, A C++11 library for serialization.
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entt, high performance ECS library
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glad, an vulkan/opengl function loader
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glfw, open source, multi-platform library for OpenGL, OpenGL ES and Vulkan application development
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imgui, is a bloat-free graphical user interface library for C++
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libacc, About Acceleration structure library (BVH-, KD-Tree) with basic parallel construction
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hybrid-rendering, provide raytracing and denoise.
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spriv-cross, SPIRV-Cross is a tool designed for parsing and converting SPIR-V to other shader languages.
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tracer, c++ crash tracer.
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glm, OpenGL Mathematics (GLM) is a header only C++ mathematics library for graphics software.
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spdlog, Very fast, header-only/compiled, C++ logging library
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stb, single-file public domain (or MIT licensed) libraries for C/C++
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flax-engine, open source game engine. provide the idea how to generate and trace sdf.
Also Paper Reference