https://github.com/godotengine/godot
Stride Game Engine (formerly Xenko)
https://github.com/FlaxEngine/FlaxEngine
https://github.com/NVIDIAGameWorks/PhysX
https://github.com/SaschaWillems/Vulkan
https://github.com/NVIDIAGameWorks/RTXGI
https://github.com/nvpro-samples/shared_external
https://github.com/nvpro-samples/shared_sources
https://github.com/nvpro-samples/vk_raytracing_tutorial_KHR
https://github.com/zhing2006/GPU-Ray-Tracing-in-Rest-of-Your-Life-by-Unity-2019.3
https://github.com/GPSnoopy/RayTracingInVulkan
https://github.com/KhronosGroup/GLSL
Glsl Shaders, some from me, and some from ShaderToy.