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)