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


Get the swap interval for the current OpenGL context.


int SDL_GL_GetSwapInterval(int *interval);

Function Parameters

interval Output interval value. 0 if there is no vertical retrace synchronization, 1 if the buffer swap is synchronized with the vertical retrace, and -1 if late swaps happen immediately instead of waiting for the next retrace

Return Value

Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.


If the system can't determine the swap interval, or there isn't a valid current context, this function will set *interval to 0 as a safe default.


This function is available since SDL 3.0.0.

CategoryAPI, CategoryVideo

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