The person above is talking nonsense. Opengl is not dead, and metal and vulkan cannot replace GL, because Opengl is still used in the mechanical and medical modeling fields. If you want it to be phased out, at least replace all these supporting facilities with vulkan and let me know. Additionally, if people on the first floor plan to use Opengl, you must abandon the Apple market and leave the Mac, iOS, and iPad, which no longer plan to support Opengl. And in Android, Windows, Linux, and even Nintendo, there is no stop to OpenGL, and you can develop in these places. Don't believe any advice about learning Vulkan, as it is 20 times more difficult than Opengl, with almost no individual developers proficient in mastering it, and even games produced by large companies often experience frequent lag and crashes. Because Vulkan will completely drain hardware performance, while Opengl prevents you from engaging in such extreme behavior. A very young and immature programmer who comes into contact with such a difficult API is a reckless behavior that is difficult to describe in words. I do not recommend any newcomers to graphics programs to come into contact with Vulkan, even if this API has a very good reputation. Therefore, learning Opengl and DX11 is where you belong. If you are just an individual developer, don't come into contact with DX12 and VK. They are very bad, and without a certain level of technical proficiency, you will crash. For so many years, they have not been widely used in games and applications, and you can understand where their problems lie.