Not Engine Beta 0.2.1

Everything as code!

A code-first game engine built on OpenGL, empowering you to build everything from scratch with clean, simple code.

PRs and issues are welcome!

2026-09-27: I just made this for my own use.

Supported Features

• Skymap
• PBR shader
• Event system
• OBJ file import
• MTL material import (albedo, roughness, metallic, normal maps)
• Submesh support
• Play Audio

Performance

Version	Objects	Model	FPS	VSync
0.1.5	1,000,000	notbox.obj	1 FPS	ON
0.1.6	1,000,000	notbox.obj	30 FPS	OFF
0.1.10	1,000,000	notbox.obj	46 FPS	OFF

The same scene was used for both benchmarks.

Renderer optimization improved performance from 1 FPS to 30 FPS — approximately 30× faster.

Test Environment

• CPU: AMD Ryzen 7 7800X3D (16) @ 5.05 GHz
• GPU: AMD Radeon RX 9070 XT [Discrete]
• Resolution: 1280×720
• Monitor: 165Hz

Build

You will need the cmake, ninja (or make), and glfw3 (development) packages to build this project.

If you don't install third party libraries using package manager, then CMake installs libraries using FetchContent module through Git.

Prerequisites (Linux/Ubuntu)

sudo apt update
sudo apt install cmake ninja-build libglfw3-dev build-essential

Instructions

Configure and build using CMake Presets:

# Configure (Ninja Release)
cmake --preset ninja-release

# Build the core library
cmake --build --preset ninja-release-notengine

# Build the demo executables
cmake --build --preset ninja-release-all

Run the built demos:

# Default demo
./build/ninja-release/demo

# Scene file rendering demo
./build/ninja-release/scene_render

# glTF model demo (Cube)
./build/ninja-release/gltf_model

# glTF scene demo (Sponza)
./build/ninja-release/gltf_scene

# Benchmark
./build/ninja-release/benchmark

Blender Exporter

Export Blender scenes as Seno v8 with separate OBJ models, MTL materials, and textures in one folder using the Seno exporter. Install script/blender_seno/seno_exporter.py as a Blender add-on, then choose File → Export → Seno Scene (folder).

Asset Source

• skymap: https://ambientcg.com/view?id=DaySkyHDRI001A
• test audio (wav): https://commons.wikimedia.org/wiki/File%3AAudio.wav
• test audio (mp3): https://commons.wikimedia.org/wiki/File%3AUncleSigmund_-_ahhh_(cc0)_(freesound).mp3
• test gltf models: https://github.com/KhronosGroup/glTF-Sample-Models

Star History