OpenGL 3D Scene in PBR

Context

This project is a deferred rendering 3D scene with Physically Based Rendering (PBR) and Image-Based Lighting (IBL), built with a custom engine from scratch using OpenGL. I developed it during my second-year Computer Graphics module at SAE Institute Geneva.

The goal was to explore rasterization-based rendering. We started with basics like rendering a triangle and matrix operations, then advanced to techniques such as shadow mapping, deferred shading, PBR, and IBL. By the end, we combined these to create a complete 3D scene, showcasing our understanding of graphics rendering.

Showcase

Here is a short showcase video of my scene:

Here’s a video showing the different samples I created while learning OpenGL during the course module:

Here are different renderings of my scene:

Features

• OBJ Model Loading
• Instancing
• Face and Frustum Culling
• Cubemap
• Deferred Shading
• Screen Space Ambient Occlusion (SSAO)
• Shadow Mapping
  • Directional Light Shadow Map
  • Point Light Shadow Cubemap
• Physically Based Rendering (PBR)
  • Image Based Lighting (IBL)
  • Directional Light
  • Point Light
• Emissive Textures Mapping
• Physically Based Bloom
• High Dynamic Range (HDR) + Tone Mapping + Gamma Correction

What did I learn ?

• The basics of graphics programming
• The OpenGL API
• Rasterisation-based 3D rendering
• Deferred Rendering
• Physically Based Rendering (PBR) and Image Based Lighting (IBL)
• The rendering equation and a way to solve it using PBR
• A better understanding and use of abstractions
• Use of RAII in C++ to throw error logs and ensure proper resource cleanup by allowing the programmer to control destruction order