thdoeunt34stnoe

Have you actually used the API? When it comes to submitting geometry and textures (some of the biggest bottlenecks), it's exactly the same as in C. You pass a pointer to your buffer of bytes and they get copied to the GPU for you.

You are correct. However, many in-studio tools are written in OpenGL. These tools are used to model objects and layout lighting, scenes, etc. by artists. They are written in OpenGL, usually on Linux. (Source: I work with several people who formerly built these tools for well-known studios like DreamWorks and Sony.)

FWIW, they've only deprecated it, meaning no new updates. They haven't removed it from the platform. Furthermore, desktop OpenGL seems like it's dead anyway, given that Vulkan has replaced it.