rt_render

A real-time path tracing renderer in Vulkan.

Originally an SFU CMPT 469/722 course project during the Spring 2025 term.

Dependencies

Required:

• C++ 20 compiler
• CMake 3.22
• Vulkan 1.4 SDK

Included:

• GLFW
• OpenGL Mathematics (GLM)
• stb
• TinyGLTF
• Vulkan Memory Allocator (VMA)

Building

Clone the repository with submodules:

git clone --recurse-submodules --shallow-submodules https://github.com/gpcm00/rt_render

Configure the build directory and build the project (Windows or Linux):

cmake -B build
cmake --build build

Download the glTF sample assets:

cd build
git clone --depth 1 https://github.com/KhronosGroup/glTF-Sample-Assets

Run the application from the same directory as the glTF sample assets. It uses the sample asset ABeautifulGame.gltf as the default scene, but you can pass it a file path as a command line argument, for example:

./renderer.exe "glTF-Sample-Assets/Models/ABeautifulGame/glTF/ABeautifulGame.gltf"

Due to time constraints, not all sample assets are supported.

Controls

• Movement: WASD keys
• Camera Rotation: Mouse
• Exit: Escape key

Code

The code organization is as follows:

• The shaders folder contains the GLSL shader source code.
• Our implementation is split across the src folder which contains our .cpp files while the header files are in the include folder. Our renderer code is primarily in include/renderer/renderer.hpp and src/renderer.cpp.
• The external directory contains third-party dependencies in the form of git submodules.

Gallery