Ray Tracer

A custom parallel ray tracing solution built in C++.

Features

• Physically-Based Rendering (PBR): Implements diffuse (Lambertian), metallic, and dielectric (glass/water) materials.
• Parallelism: Utilizes oneTBB to distribute rendering across multiple CPU cores.
• Antialiasing: Samples each pixel with multiple rays in order to smooth out edges.
• Depth of Field: Implements a positionable camera with depth of field, resulting in blurred background objects.

Example Render

Rendered 1920x1080 resolution with 150 samples per pixel.

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Building and Running

This project uses CMake for configuration and building.

Prerequisites

You will need the following tools installed:

• C++23
• CMake (version 3.31 or higher)
• oneTBB library (often available via package managers)
• ImageMagick (for converting the output .ppm file to .png for display)
• chafa (for displaying the image in the terminal)

Compilation

1. Create a build directory:

   cmake -S . -B ./build

2. Execute the generate script:

   ./generate.sh

This script will:

• Build and run the raytracer executable.
• Convert the resulting ppm file into a png.
• Display the image in the terminal.