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

SDL_GL_GetSwapInterval

Get the swap interval for the current OpenGL context.

Header File

Syntax

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.

Remarks

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.

Version

This function is available since SDL 3.0.0.