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https://github.com/Zielon/PBRVulkan

Vulkan Real-time Path Tracer Engine
https://github.com/Zielon/PBRVulkan

brdf gpu-programming light-simulation path-tracer pbr rasterization raycaster-engine raycasting raytracer raytracing rtx vulkan

Last synced: 12 minutes ago
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Vulkan Real-time Path Tracer Engine

Host: GitHub
URL: https://github.com/Zielon/PBRVulkan
Owner: Zielon
License: bsd-2-clause
Created: 2020-09-07T15:44:37.000Z (about 4 years ago)
Default Branch: master
Last Pushed: 2021-10-10T09:59:35.000Z (about 3 years ago)
Last Synced: 2024-08-04T10:06:39.204Z (4 months ago)
Topics: brdf, gpu-programming, light-simulation, path-tracer, pbr, rasterization, raycaster-engine, raycasting, raytracer, raytracing, rtx, vulkan
Language: C++
Homepage:
Size: 207 MB
Stars: 473
Watchers: 11
Forks: 38
Open Issues: 14
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

README

        # Ray tracer sandbox in Vulkan

This project is an engine where you can create/test new shaders in real-time physically based ray tracing system. The main idea is that users can test their own integrators in predefined environment with assets like: meshes, materials, lights and textures. The Vulkan pipeline is abstracted in a shaders form and the only concern for a user is providing either their own scene description or using already existing one.

 ![discord](https://img.shields.io/discord/774330363810938890) ![issues](https://img.shields.io/github/issues/Zielon/PBRVulkan) ![release](https://img.shields.io/github/v/release/Zielon/PBRVulkan) ![closed](https://img.shields.io/github/issues-closed-raw/Zielon/PBRVulkan) ![Linux](https://img.shields.io/badge/system-Linux-green) ![Windwos](https://img.shields.io/badge/system-Windows-green)

Check out the discord [#general](https://discord.gg/365bNPbFTM) for more info or [discussions](https://github.com/Zielon/PBRVulkan/discussions). The current development is available under [project](https://github.com/Zielon/PBRVulkan/projects/1).  



  



#### Sandbox

As an example of creating your own shader please take a look at [Ambient Occlusion](https://github.com/Zielon/PBRVulkan/blob/master/PBRVulkan/RayTracer/src/Assets/Shaders/Raytracer/Integrators/AO.glsl) or [Path Tracer](https://github.com/Zielon/PBRVulkan/blob/master/PBRVulkan/RayTracer/src/Assets/Shaders/Raytracer/Integrators/PathTracer.glsl). Those files are automatically included in the `hit shader`. At this level you have many resources available to create your own implementation. For now, to make them available for the engine, you would need to add them in the same way I added aforementioned files.

#### Features

```

1) Ray tracing pipeline

    scene/assets description with:

      materials

      meshes

      lights (area, spherical)

    HDR

    path tracer integral

    Disney BRDF

2) Rasterizer pipeline     

    Phong-Blinn model

3) Compute shader pipeline 

    denoiser

    egde detection

    edge sharpner

```

#### How to run

1) Download [VulkanSDK](https://vulkan.lunarg.com/sdk/home#windows) and install it following the instuctions.

2) Run `windows_install.bat` or `sudo linux_install.sh` script depending on the system to download all necessary libraries. 

3) `git-lfs` must be installed in order to fetch scenes repository.

C++17 is needed to compile the project.

#### Assets

The scene description and assets are adapted from [GLSL-PathTracer](https://github.com/knightcrawler25/GLSL-PathTracer) project [4]. The [scenes repository](https://github.com/Zielon/PBRScenes) will be automatically cloned during the installation process.

```

PBRVulkan/Assets/PBRScenes/

    bedroom/

    coffee_cart/

    HDR/

    bedroom.scene

    coffee_cart.scene

    ...

```

#### References/Credits

[0] [Vulkan Tutorial](https://vulkan-tutorial.com/) \

[1] [Vulkan Ray Tracing Tutorial](https://nvpro-samples.github.io/vk_raytracing_tutorial_KHR/) \

[2] [PBR Book](http://www.pbr-book.org/3ed-2018/contents.html) \

[4] [GLSL-PathTracer](https://github.com/knightcrawler25/GLSL-PathTracer) \

[5] [RayTracingInVulkan](https://github.com/GPSnoopy/RayTracingInVulkan)