Feather

Feather is a small OpenGL engine written in C++ developed for fun and learning purposes. The API is loosely inspired by BabylonJS.

Features

General

Blinn-Phong shading
PBR shading
Normal mapping
Shadow Mapping
CPU mouse picking
Post-processing effects
Compute shaders
Raw .obj file loading
Up to 128 point lights by default
ImGui integration

Physics

The entire code for the physics engine is available in the core/physics directory. It is based on the Position-Based Dynamics (PBD) method, and includes the following features:

XPBD soft body simulation
HPBD multigrid solver for XPBD
Distance constraints
Fast and Dihedral bending constraints
Tetrahedral volume constraints
Global volume constraints
Collision constraints with friction
Collision LoD using HPBD
Constraints and bounding boxes helpers

A detailed report is available in the root directory of the project.

Main controls

Mouse drag: Rotate the camera
Ctrl + Mouse drag: Pan the camera
Mouse wheel: Zoom in/out
Shift + Mouse drag: lock rotation to pick an object

How to build

Dependencies

Feather uses GLFW3 for window management and input, as well as GLM for math operations.

They can be installed on any Debian-based system using the following command:

sudo apt install libglfw3-dev libglm-dev

CMake

Feather uses CMake as its build system. To build the project, you can use the following commands:

mkdir build
cd build
cmake ..
make

BarthPaleologue/feather