###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.) # SDL_RenderSetVSync Toggle VSync of the given renderer. ## Syntax ```c int SDL_RenderSetVSync(SDL_Renderer* renderer, int vsync); ``` ## Function Parameters | | | | ---------------- | -------------------------------------------------- | | **renderer** | The renderer to toggle | | **vsync** | 1 for on, 0 for off. All other values are reserved | ## Return Value Returns a 0 int on success, or non-zero on failure ## Version This function is available since SDL 2.0.18. ---- [CategoryAPI](CategoryAPI)