Some of the LearnOpenGL samples in C# (https://github.com/JoeyDeVries/LearnOpenGL)
Textures (https://github.com/JoeyDeVries/LearnOpenGL/tree/master/resources/textures)
PBR (Physically based rendering) sample:
fel88/OpenGLSamples
Some of the LearnOpenGL samples in C# (https://github.com/JoeyDeVries/LearnOpenGL)
C#MIT