Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_SetWindowSurfaceVSync - Toggle VSync for the window surface.
HEADER FILE
Defined in SDL3/SDL_video.h
SYNOPSIS
#include "SDL3/SDL.h"
bool SDL_SetWindowSurfaceVSync(SDL_Window *window, int vsync);
#define SDL_WINDOW_SURFACE_VSYNC_DISABLED 0
#define SDL_WINDOW_SURFACE_VSYNC_ADAPTIVE (-1)
DESCRIPTION
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.
FUNCTION PARAMETERS
window the window.
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
•(3), SDL_GetWindowSurfaceVSync(3)
Simple Directmedia Layer SDL 3.2.8 SDL_SetWindowSurfaceVSync(3)