This is a deferred renderer with voxel cone traced indirect diffuse and specular reflections, ambient occlusion and soft shadows. The voxel grid is a mipmapped 3D texture which contains a voxelized representation of the directly lit polygonal scene. The cone travels through the mipmap levels and gathers samples along the way.
The application is using OpenGL 4.5, GLEW for loading OpenGL, GLFW for window management, tinyobjloader to load obj-files, lodepng to load png-images, ImGui for the UI and GLM as a math library. All the dependencies are included in the lib-folder, but you should have GLEW and GLFW installed from your package manager. The app has been developed and tested in Linux/Ubuntu, but works in Windows too.
Just take a look at the simple Makefile, you should be able to edit the settings for your setup. Build and run the app with the following commands:
$ make imgui
$ make scene=cornell runSelectable scenes include suzanne/cornell/sponza.
Press F1 to enable/disable the UI. Use WASD to fly around.
See Interactive Indirect Illumination Using Voxel Cone Tracing by Crassin et al.
Models and textures downloaded from Morgan McGuire's Computer Graphics Archive.
MIT