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by HelloNurse 2349 days ago
The theory was that OpenGL or any other API of that kind is reasonably easy to implement on top of Vulkan, providing very long term support and compatibility for OpenGL-based applications.

In practice, like 15 years ago, you can use Mesa3D which remains as comprehensive and unexciting as ever with constantly improving performance thanks to using Vulkan.

In the more mainstream part of practice, rendering engines get rid of OpenGL to use Vulkan because it's usually better.