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My init code calls glGetString() to find information about the OpenGL implementation, but why doesn it return a string?

April 26, 2017code glgetstring Implementation init OpenGL Return String

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My init code calls glGetString() to find information about the OpenGL implementation, but why doesn it return a string?

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The most likely cause of this problem is that a context hasn’t been made current. An OpenGL rendering context must exist and be made current to a window for any OpenGL calls to function and return meaningful values.