OpenGL Scene

This is the OpenGL scene made in C++ during the Graphics Programming module at SAE Institute.

It has :

• Physically Based Rendering (PBR)
• Image Based Lighting (IBL)
• Deferred Rendering
• Cascaded Shadow Maps
• Normal Mapping
• ACES HDR Tone Mapping
• Bloom
• Screen Space Ambient Occlusion (SSAO)
• Scene Graph
• Model Loading (OBJ and glTF)
• KTX Textures Loading

You can read more about the implementation details of this project in this blog post : https://blog.stowy.ch/posts/how-i-implemented-a-deferred-pbr-renderer-in-opengl/

How to build

You need :

• A C++ 23 compiler that supports C++20 modules. I use Clang 18.
• CMake 3.28

Then run :

mkdir build

# On Windows
cmake -G Ninja -B build --preset=windows-clang-release # Or debug
# On Linux
cmake -G Ninja -B build --preset=unixlike-clang-release # Or debug

cmake --build build -t opengl_scene

Libraries used

• CPM.cmake : easy dependency management in CMake
• glm : linear algebra library
• assimp : 3D models importer
• SDL2 : handles the window
• glad : loads the OpenGL functions
• libktx : KTX textures importer
• Abseil : mostly to replace std::unordered_map by absl::flat_hash_map
• spdlog : fast and easy logging
• GSL: Guidelines Support Library : mostly for gsl::not_null