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The Reference Path Tracer Code sample

This is a supplemental code accompanying Ray Tracing Gems II, Chapter 14: The Reference Path Tracer. Code is based on IntroToDXR and implements a path tracer described in the article. The sample application loads GLTF scenes, specified via command line. The core of the path tracer can be found in single HLSL file - PathTracer.hlsl.

Command Line Arguments

• -width [integer] specifies the width (in pixels) of the rendering window
• -height [integer] specifies the height (in pixels) of the rendering window
• -vsync [0|1] specifies whether vsync is enabled or disabled
• -scene [path] specifies the file path to a GLTF model
• -scenePath [path] optionally specifies the root folder where scene data files can be found

Licenses and Open Source Software

The code uses the following dependencies:

• d3dx12.h, provided with an MIT license.
• stb_image.h, provided with an MIT license.
• DirectXTex, provided with an MIT license.
• DirectXTK, provided with an MIT license.
• DXC Compiler, provided with an University of Illinois Open Source
• ImGUI, provided with an MIT license.
• tiny glTF, provided with an MIT license.
• brdf.h, provided with CC0 license.

The repository includes assets for use when testing the renderer: Bathroom, by cenobi, licensed under a Creative Commons Attribution 3.0 License.