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Add SDL_RenderSetVSync()

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Currently, if an application wants to toggle VSync, they'd have to tear
down the renderer and recreate it. This patch fixes that by letting
applications call SDL_RenderSetVSync().

This is the same as the patch in #3673, except it applies to all
renderers (including PSP, even thought it seems that the VSync flag is
disabled for that renderer). Furthermore, the renderer flags also change
as well, which #3673 didn't do. It is also an API instead of using hint
callbacks (which could be potentially dangerous).

Closes #3673.
This commit is contained in:
Misa 2021-03-07 15:20:45 -08:00 • committed by Sam Lantinga
parent b2504b5da6
commit 4549769d7d
13 changed files with 168 additions and 0 deletions
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9
include/SDL_render.h
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@ -1694,6 +1694,15 @@ extern DECLSPEC void *SDLCALL SDL_RenderGetMetalLayer(SDL_Renderer * renderer);
*/
extern DECLSPEC void *SDLCALL SDL_RenderGetMetalCommandEncoder(SDL_Renderer * renderer);
/**
* Toggle VSync of the given renderer.
*
* \param renderer The renderer to toggle
* \param vsync Non-zero for on, zero for off
* \returns a 0 int on success, or non-zero on failure
*/
extern DECLSPEC int SDLCALL SDL_RenderSetVSync(SDL_Renderer* renderer, int vsync);
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}