Sparse Voxel Octree (Vulkan Version)

A GPU SVO Builder using the rasterization pipeline, an efficient SVO ray marcher and a simple SVO path tracer.
If you want an OpenGL version, check OpenGL branch.

Compilation

mkdir build && cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make

Built With

• volk - Vulkan meta-loader
• VulkanMemoryAllocator - Vulkan memory allocation
• GLFW - Window creation and management
• GLM - Maths calculations
• stb_image - Image loading
• TinyOBJLoader - Obj loading
• TinyEXR - EXR file saving
• meshoptimizer - Optimize mesh
• ImGui - UI rendering
• tinyfiledialogs - Call native file dialog (require Zenity on linux)
• spdlog - Logging system
• FontAwesome - Icon font

Usage

• Camera
  • W A S D - move around (horizontally)
  • SPACE - go up
  • LSHIFT - go down
  • Drag - change perspective
• X - toggle ui display

Improvements

The new Vulkan version is much faster than the old OpenGL version, given the comparison below:

GTX 1660 Ti

Quadro M1200

In addition, the new Vulkan version has some advanced features such as asynchronous model loading and asynchronous path tracing.

TODOs

v1.0

• Allow window resizing
• Test queue ownership transfer
• Environment map

v2.0

• Voxel editor ?
• Gradient-domain path tracing ?
• Build SVO contours ?

Reference

• https://www.seas.upenn.edu/~pcozzi/OpenGLInsights/OpenGLInsights-SparseVoxelization.pdf - Voxelization and SVO building
• https://research.nvidia.com/publication/efficient-sparse-voxel-octrees - SVO ray march

Screenshots