SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


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

Header File

Defined in SDL_hints.h




This 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 only applies to macOS.

This hint is available since SDL 2.24.0.

CategoryAPI, CategoryAPIMacro, CategoryHints

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