My First C++ Path Tracer

A brute force path-traced renderer implemented using the Ray Tracing in One Weekend series by Peter Shirley and co.

600 x 600, ~3000 spp / 500 max bounces.

Progress

The series is now complete as of 8th April, '24.

• Ray Tracing in One Weekend
• Ray Tracing: The Next Week
• Ray Tracing: The Rest of Your Life

Current Features:

• Developed from scratch using C++. (RTiOW-P1)

• Per pixel multi-sampled anti-aliasing. (RTiOW-P1)

• Gamma Correction. (RTiOW-P1)

• Positionable camera with defocus blur (DOF). (RTiOW-P1)

• Lambertian, Metallic, and Dielectric Materials. (RTiOW-P1)

• Motion blur. (RTTNW-P2)

• AABB BVH. (RTTNW-P2)

• Solid color, Image, and Noise Textures. (RTTNW-P2)

• Perlin Noise with trilinear interpolation and Hermitian Smoothing. (RTTNW-P2)

• Emissive lights. (RTTNW-P2)

• Primitives: Quads, and spheres. (RTTNW-P2)

• Volumes. (RTTNW-P2)

• Monte Carlo Path Tracing. (RTTROYL-P3)

• Importance Sampling. (RTTROYL-P3)

• Generating directions with inverse CDFs and orthonormal bases. (RTTROYL-P3)

• Mixed PDFs. (RTTROYL-P3)

Part 1- 1920 x 1080, 150 spp, 150 max. bounces

Improvements:

• Basic multi-threading.
• Uniformly distributed per-pixel jittered AA.
• Core implementation writes every pixel. We collect all color data and directly write to the image in one go.

Branches:

• rtiow-book1: Code from Ray Tracing in One Weekend.
• rttnw-book2: Code from Ray Tracing The Next Week.
• rttroyl-book3: Code from Ray Tracing The Rest of Your Life.

Directory Structure

• src/ -- Main source folder.

• src/headers -- Contains all in-use headers.

• src/headers/base -- Contains all base and utility classes.

• src/headers/materials -- Contains all derived material classes.

• src/headers/world_objects -- Contains all derived world-object classes.