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Photon beam rendering algorithm implemented with DirectX12 and RTX

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DirectX12PhotonBeam

Photon beam rendering algorithm implemented with DirectX12 and RTX

Link to video

Link to video

Background

This is a portfolio project made with intention to implement Photon Beam rendering algorithm using DXR and DirectX 12.

Photon Beam is a rendering algorithm developed by Disney for descriging radiance due to volumetric participating media.

This application loads a GLTF 3D model file. BRDF equation used for surface refelections on the 3D model follows BRDF in GLTF specification for surface reflection.

For rendering, this application uses

  • Photon beam method for volumetric participating media radiance estimation
  • Photon mapping method for surface radiance
  • Simple raytracing for specular reflection on 3D model objects with zero roughness.

Watch above video for checking how the implementation works.

For more detailed background of the techinques used, you may check the references.

Vulkan Implementation

https://github.com/donguklim/vk_raytracing_tutorial_KHR/tree/master/photon_beam

The vulkna implementation is made with Nvidia raytracing sample code as base.

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Photon beam rendering algorithm implemented with DirectX12 and RTX

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