azer89 / simpleopengl

A renderer featuring advanced techniques such as PBR/IBL, deferred shading, SSAO, and shadow mapping.

OpenGL Renderer

A real-time rendering demo built from scratch using OpenGL and C++.

Features

• Physically Based Rendering (PBR)
• Image-Based Lighting (IBL)
• Deferred shading
• Screen Space Ambient occlusion (SSAO)
• Sobel edge detection
• Shadow mapping
• Bloom postprocessing
• Minor features: Geometry shader, Blinn-Phong shading, Skybox, glTF model loading.

Physically-Based Rendering (PBR) and Image-Based Lighting (IBL)

pbr_tachikoma.mp4

Deferred shading

A Sponza scene with 300 light sources.

deferred_shading.mp4

Screen Space Ambient Occlusion

This Gundam model looks great with ambient occlusion.

Shadow mapping

The sahdow edges are blurred using PCF.

shadow_mapping.mp4

Sobel edge detection

Bloom postprocessing

Some other cool results

pbr_armor.mp4

pbr_helmet.mp4

Build

• OpenGL 4.6 / Direct State Access
• Visual Studio 2022 x64 and C++20
• Libraries: Assimp, glad, glfw, glm, assimp, ImGui, and stb.

Credit

Technical Resources:

• learnopengl.com
• 3D Graphics Rendering Cookbook

Assets:

• glTF Assets
• Polyhaven

3D Models:

• Armor
• Zaku
• Zodd
• Freya
• Tachikoma
• Unicorn Gundam