When a window surface is created, vsync defaults to
SDL_WINDOW_SURFACE_VSYNC_DISABLED.
The vsync parameter can be 1 to synchronize present with every vertical
refresh, 2 to synchronize present with every second vertical refresh, etc.,
SDL_WINDOW_SURFACE_VSYNC_ADAPTIVE for late swap tearing (adaptive vsync),
or SDL_WINDOW_SURFACE_VSYNC_DISABLED to disable. Not every value is
supported by every driver, so you should check the return value to see
whether the requested setting is supported.
Toggle VSync for the window surface.
When a window surface is created, vsync defaults to SDL_WINDOW_SURFACE_VSYNC_DISABLED.
The vsync parameter can be 1 to synchronize present with every vertical refresh, 2 to synchronize present with every second vertical refresh, etc., SDL_WINDOW_SURFACE_VSYNC_ADAPTIVE for late swap tearing (adaptive vsync), or SDL_WINDOW_SURFACE_VSYNC_DISABLED to disable. Not every value is supported by every driver, so you should check the return value to see whether the requested setting is supported.