• Made in C++ using OpenVR and BGFX as graphics API (targeting DirectX 11)
• All math, editor features, shaders, etc. built from scratch unless otherwise noted
• Rendering Features
• Implemented PBR shader using GGX and Smith functions
• Includes Image Based Lighting with ability to capture environments within engine
• Volumetric Lighting using frustum-aligned voxels stored in 3D textures -- based off slides from Wronski (2014)
• Real time dynamic shadows for point and directional lights
• Engine Features:
• Stencil based portal rendering with seamless transitions
• Async level loading for seamless level changes
• Hand gestures using Valve Index controllers to manipulate objects through telekinesis
• Open palm to select oject, then close to pick it up
• Open palm pushes objects away
• Closed palm pulls objects towards hand
• Collision detection and response
• Collision-aware grid based movement system
• Audio Engine:
• Custom audio engine
• Steam Audio integration for binaural audio and pathing of sound sources through 3D environments
• Realtime synthesis and DSP with signal routing. Synths and filters will sort correctly based on signal paths through synths and effects
  • Custom implementation of granular synthesis audio technique
  • Arbitrary envelopes with various interpolators curve between points. Envelopes can drive amplitude, pitch or any exposed parameters of a generator or processor (e.g. cutoff frequency and Q factor of a lowpass)
  • Standard filters like high, low, bandpass
  • Glitchy distortions like wave loss
• LOD like system for handling many individual sound sources
• Individual sound sources get binaural filters applied
• Due to many potential sound sources, occluded sounds or distant sounds get collapsed to single sound sources based on physical location to reduce binaural and pathing calculations.
• Gameplay driven procedural music with no pre-recorded stems or sequence data
• Editor features:
• Hot reload shaders
• Hot reload textures and meshes
• Translate/Rotate gizmos that support local and world space transformations
• Parent/Child transform hierarchies
• Duplicate/Delete/Undo
• Maya-like and WASD camera controls
• Human readable text files for scene descriptions
• Dear ImGui frontend for manipulate entities and engine state

• Made using OpenGL and SDL2 in C++
• Particle system completely simulated on GPU using OpenGL Transform Feedback
• Simulates half a million+ particles at 60fps
• Implemented 3D Perlin noise algorithm and Bezier curves in shaders to drive particle movement
• Particles grab their color from any texture image source
• Reads audio directly off the sound card
• Implemented simple beat detection
• Particles react dynamically to any sound source
• Was made to project on the side of building and trees for dynamic party lighting at our wedding reception
• Play at highest quality

• Made using SDL2 in C++
• Implemented 2D rigid body physics
• Uses semi-implicit Euler integration on forces to gain accurate positions and velocities
• Implemented Oriented Bounding Box collision detection
• Implemented simple 2D platformer physics
• Game code changes can be hotloaded while engine is still running
• Video shows rigid body physics demo as well as hotloading of code changes

• Interactive piece made using UDK and SuperCollider
• Users create gestures and navigate environment with Wacom tablet
• Sonic and visual textures affected by drawn gestures and can vary with pressure
• Gesture data and positional cues sent from UDK to SuperCollider using OSC
• Binaural audio for headphones using head-related transfer function
• User's gestures are recorded and redrawn alongside current input
• Previous users' gestures are also recorded and redrawn for the current user
• Experience for a single user lasts about 6-10 minutes, the video above is a full playthrough

• Base mesh (modeled in Maya): 2568 polygons
• Displacement/normal map from zBrush: 164352 polygons
• Texture maps painted in zBrush and Photoshop
• Click to enlarge: