Penumbra is a simple Rendering Engine primarily built for Occlusion, a custom 3D game engine.
Cross-platform but mainly tested and developed on Linux.
Penumbra is part of the EcLibs project, a group of libraries and tools mainly focused on graphics and game development.
Like with Occlusion, the name of this project is also related to eclipses. Why? Rule of cool.

It supports BGFX and WebGPU as backends (WebGPU via WGPU-Native).

Important

This is a Work in Progress. As of now, only 2D Rendering is supported.

What does it support?

• 2D and 3D Graphics via separate modules (Antumbra and Umbra respectively)
• Phong-based lighting and other simple experimental non-physically based lighting models
• Model loading

What does it ACTUALLY support?

Right now it only supports simple 2D graphics lol.

Dependencies

Utilities

• bgfx-shaderc (included with BGFX) [Only if using BGFX as backend]
• toktx [Khronos Textures not supported with WebGPU Backend for now]

Libraries

• BGFX [Only if using BGFX as backend]
• WGPU-Native: Version 22.1.0.5 [Only if using WebGPU as backend]
• GLFW
• GLM
• STB Image (included)

Extra: Arch Linux Packages

If you're using Arch Linux or an Arch-based Linux distribution, you can use these packages to install the necessary dependencies. WGPU-Native is obtained from the Releases tab of its repository.

• bgfx-cmake-git [Only if using BGFX as backend]
• ktx_software-git [Only if using BGFX as backend; KTX is currently not supported with WGPU Backend]
• glfw
• glm