RedBud Engine

RedBud is a real-time rendering and game engine I started working on many years ago. The project was started from scratch and is written entirely in C++. The graphics module provides a unified interface over Direct3D 12 and Vulkan 1.1 implementations, and is designed to work with the lower-level concepts exposed by these APIs. All of the rendering techniques below are fully supported for both backends, and it is straightforward to implement new capabilities that will run on both backends without the need for the implementer to worry about the underlying platform.

Skip past the feature list for screenshots.

Rendering

Full Direct3D 12 support
Full Vulkan 1.1 support
Multi-threaded command list generation and submission
Deferred rendering
Forward rendering
Shadow maps for directional, point, and spot lights
Cascaded shadow maps for directional lights
Multi-camera support (split-screen, etc.)
Physically-based lighting model
Specialized BRDF for cloth materials
Real-time environment probe updates
Real-time convolution of specular environment probes using the split-sum approximation
Real-time spherical harmonic calculations for diffuse environment probes
Approximated global illumination
Area lights
Atmosphere with multiple scattering
Volumetric clouds with accurate shadows
Crepuscular rays for directional lights
Opaque and transparent geometry
Screen-space separable subsurface scattering with transmittance
Screen-space glossy reflections
Screen-space ambient occlusion
Depth of field with bokeh
Motion blur
Lens flare
Chromatic abberation
Vignette
Film grain
Bloom
Tone mapping
Fast approximate anti-aliasing (FXAA)
Heightmap terrain
Text rendering with TrueType font support

Animation

Skinned models
Track blending

Math

Custom math library with vector, matrix, and quaternion types, as well as common functions for each
Noise library with support for OpenSimplex noise and Worley noise

Physics

Bullet Physics SDK integration
Application-level callbacks for customizable, user-defined collision responses
Mass aggregate system for particle physics

Sound

3D audio support
Reverb
Mixing of master track channels
Multiple channels of simultaneously playing sound effects

Networking

TCP/UDP packet sending and receiving
Full support for building networked multiplayer games

General Features

JSON scene, model, and material definitions
Configuration file support for easy feature-toggling and setting adjustment
Entity-component system for handling scene object creation, updating, and communication
Customizable logging
Model loading from various formats
.DDS, .PNG, and .JPG texture support
Keyboard and mouse input support
Gamepad input support
Thread pool implementation for running concurrent tasks
Screenshot capture