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

SDL_GL_GetSwapInterval

Get the swap interval for the current OpenGL context.

Header File

Syntax

int SDL_GL_GetSwapInterval(void);

Return Value

(int) Returns 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; 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 return 0 as a safe default.

Version

This function is available since SDL 2.0.0.