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(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


A variable controlling whether dispatching OpenGL context updates should block the dispatching thread until the main thread finishes processing on macOS.

Header File

Defined in <SDL3/SDL_hints.h>




The variable can be set to the following values:

Generally you want the default, but if you have OpenGL code in a background thread on a Mac, and the main thread hangs because it's waiting for that background thread, but that background thread is also hanging because it's waiting for the main thread to do an update, this might fix your issue.

This hint can be set anytime.


This hint is available since SDL 3.0.0.

CategoryAPI, CategoryAPIMacro, CategoryHints

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