Culling with NVIDIA Mesh Shaders

This project studies the possibilites and challenges of NVIDIA Mesh Shaders. With custom meshlet based backface and frustum culling a comparison between Mesh Shader, Compute Shader and standard Vertex Shader is conducted to evaluate possible performance gains, pitfalls and obstacles.

A personal secondary purpose of the project was to implement a C++ framework from ground up using Entity Component System. The EnTT library was used for this.

The 3D Models are from the Stanford 3D Scanning Repository: http://graphics.stanford.edu/data/3Dscanrep/

Video Analysis

List of Dependendies

• Assimp (5.0.1)
• ImGui (1.74)
• EnTT (3.3.0)
• GLM (0.9.9.7)
• Glad (0.1.33)
• GLFW3 (3.3.2)

Points of Interest

• OpenGL Shader and Buffer Setup

  See different Test Scenes

• Meshlet, Bounding Sphere and Bounding Cone creation

  Meshlet Triangle Mesh Header

  Meshlet Triangle Mesh CPP

• Main Loop

  See Context::run()

• Shaders

  See Resources/Shaders/