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Added SDL_SetWindowSurfaceVSync() and SDL_GetWindowSurfaceVSync()

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Fixes https://github.com/libsdl-org/SDL/issues/9347
This commit is contained in:
Sam Lantinga
2024-05-27 10:27:17 -07:00
parent 7c75801571
commit dfe4445214
9 changed files with 106 additions and 21 deletions
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34
include/SDL3/SDL_video.h
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@@ -1801,6 +1801,40 @@ extern SDL_DECLSPEC SDL_bool SDLCALL SDL_WindowHasSurface(SDL_Window *window);
*/
extern SDL_DECLSPEC SDL_Surface *SDLCALL SDL_GetWindowSurface(SDL_Window *window);
/**
* Toggle VSync for the window surface.
*
* When a window surface is created, vsync defaults to SDL_WINDOW_SURFACE_VSYNC_DISABLED.
*
* \param window the window
* \param vsync the vertical refresh sync interval, 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.
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetWindowSurfaceVSync
*/
extern SDL_DECLSPEC int SDLCALL SDL_SetWindowSurfaceVSync(SDL_Window *window, int vsync);
#define SDL_WINDOW_SURFACE_VSYNC_DISABLED 0
#define SDL_WINDOW_SURFACE_VSYNC_ADAPTIVE (-1)
/**
* Get VSync for the window surface.
*
* \param window the window to query
* \param vsync an int filled with the current vertical refresh sync interval.
* See SDL_SetWindowSurfaceVSync() for the meaning of the value.
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_SetWindowSurfaceVSync
*/
extern SDL_DECLSPEC int SDLCALL SDL_GetWindowSurfaceVSync(SDL_Window *window, int *vsync);
/**
* Copy the window surface to the screen.
*