Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_HINT_RENDER_VSYNC - A variable controlling whether updates to the SDL screen surface should be
synchronized with the vertical refresh, to avoid tearing.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_RENDER_VSYNC "SDL_RENDER_VSYNC"
DESCRIPTION
This hint overrides the application preference when creating a renderer.
The variable can be set to the following values:
• "0": Disable vsync. (default)
• "1": Enable vsync.
This hint should be set before creating a renderer.
AVAILABILITY
This hint is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_RENDER_VSYNC(3)