Cigg / Voxel-Cone-Tracing

Real-time global illumination

Voxel Cone Tracing

Project in TSBK03 - Advanced Game Programming, at Linköping University.

The scene is voxelized and stored in a 3D texture. The voxelized scene representation is "cone traced" in the final rendering step to get indirect light in the scene.

Project members

Oscar Westberg
Mikael Zackrisson

Links

• Course webpage
• Original implementation technical paper
• OpenGLInsights chapter on voxelization

Requirements

• CMake
• OpenGL 4.1 support

Tested on Linux and Windows with Nvidia GPUs.

Getting started

Clone the repository using the --recursive flag to get all dependecies.

git clone --recursive https://github.com/Cigg/Voxel-Cone-Tracing.git
cd Voxel-Cone-Tracing

If you already cloned the repo:

git clone https://github.com/Cigg/Voxel-Cone-Tracing.git
cd Voxel-Cone-Tracing
git submodule update --init --recursive

Now generate a project or makefile for your platform

  mkdir bin
  cd bin
  cmake ..

TODO

• Conservative voxelization
• Atomic operations for image writing to get an averaged voxel value
• Better mipmapping (faster + anisotropic)
• Light injection like in the article
• Dynamic objects
• Maybe sparse voxel octree someday