SDL_GL_GetSwapInterval

#include <SDL3/SDL_video.h>

bool SDL_GL_GetSwapInterval(int *interval);

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.

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.

for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GL_SetSwapInterval(3)