zydak/vulkan-path-tracer

Vulkan Path Tracer

Vulkan-Path-Tracer

Vulkan Path Tracer is a simple offline renderer made from scratch in Vulkan using my framework Vulture. For ray tracing it utilizes Vulkan Ray-Tracing Pipeline. It uses a simple energy conserving BSDF (more on that in Technical Overview) with Diffuse, Dielectric, Metallic and Glass lobes. Renders that you create can be easily saved as .png images. It also features a post processing graph that allows you to create your own combination of post processing effects and apply them to your renders.

For more info on the project visit Technical Overview.

Running

• Download Vulkan SDK.
• Download PathTracer.zip from Releases.
• Unzip and run PathTracer/PathTracer/PathTracer.exe.

Building

Windows Only

• Download Vulkan SDK.
• Run git clone https://github.com/Zydak/Vulkan-Path-Tracer --recursive.
• Go to Releases and download Shaderc.zip
• Unzip and copy Shaderc libraries into Vulture/lib/shaderc/.
• Run setup.bat in main directory.
• Open generated solution in Visual Studio.

Gallery

Material Showcase

• Metallic factor ranging from 0 to 1. Determines whether the surface is metallic or dielectric.

• Roughness factor on metallic surface ranging from 0 to 1.

• Specular Strength factor ranging from 0 to 1. Changes the strength of specular highlights on dielectric surfaces.

• Roughness factor on dielectric surface ranging from 0 to 1.

• Specular Tint factor on dielectric surface ranging from 0 to 1. Gradually Tints the specular highlights to the surface color.

• Transparency factor ranging from 0 to 1. Determines whether the material is able to refract light rays or not.

• Roughness factor on glass surface ranging from 0 to 1.

• Index of refraction (IOR) factor on glass surface ranging from 1 to 2. Determines how much the path of light is bent during refraction.

List Of Features

• Energy Conserving BSDF
• Complex Materials
  • Diffuse, Metallic and Roughness Textures
  • Transparent materials with IOR
  • Emissive Objects
• Editor
  • Loading your own scenes in .gltf .fbx and .obj format
  • Editing scene materials in runtime
• Exporting renders into .PNG files
• Shader hot reloading and caching
• HDR Environment Maps
• Post Processing
  • Bloom using Mip Maps
  • Exposure
  • Contrast
  • Brightness
  • Saturation
  • Vignette
  • Gamma
  • Temperature with Tint
  • Color Filter
  • Chromatic Aberration
  • 6 Tonemappers (Filmic, Hill Aces, Narkowicz Aces, Exposure Mapping, Uncharted 2, Reinchard Extended)
  • Ink Effect: Detects Edges, turns everything to black and white, applies blue noise and adds paper texture.
  • Posterize Effect: Quantizes Colors, Applies Dithering and adds ability to replace color pallet with your own colors or colors generated in OKLAB color space
• Anti Aliasing
• Depth of Field effect with automatic focal length
• Image Denoising using Nvidia Optix Denoiser
• Camera controller made using quaternions

Credits

Models

• https://sketchfab.com/3d-models/dog-statue-49d97ca2fbf34f85b6c88ae8ebc7514f - Dog Statue
• https://pbrt.org/scenes-v3 - Glass
• https://pbrt.org/scenes-v3 - Small Dragon
• https://pbrt.org/scenes-v3 - Coffee Cup
• https://www.blender.org/download/demo-files/ - Monster
• https://polyhaven.com/hdris - Env Maps
• https://polyhaven.com/a/ship_pinnace - Ship
• https://benedikt-bitterli.me/resources/ - Dragon
• https://sketchfab.com/3d-models/sponza-0cbee5e07f3a4fae95be8b3a036abc91 - Sponza
• https://github.com/KhronosGroup/glTF-Sample-Models/tree/main/2.0/Sponza/glTF - Sponza 2
• https://wirewheelsclub.com/models/1965-ford-mustang-fastback/ - Mustang
• https://github.com/knightcrawler25/GLSL-PathTracer Teapots