Function SDL_SetRenderVSync 

pub unsafe extern "C" fn SDL_SetRenderVSync(
    renderer: *mut SDL_Renderer,
    vsync: c_int,
) -> bool

Toggle VSync of the given renderer.

When a renderer is created, vsync defaults to SDL_RENDERER_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_RENDERER_VSYNC_ADAPTIVE for late swap tearing (adaptive vsync), or SDL_RENDERER_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.

Parameters

• renderer: the renderer to toggle.
• vsync: the vertical refresh sync interval.

Return value

Returns true on success or false on failure; call SDL_GetError() for more information.

Thread safety

This function should only be called on the main thread.

Availability

This function is available since SDL 3.2.0.

See also

• SDL_GetRenderVSync