SDL_GetDisplayContentScale - Get the content scale of a display.

       This function is available since SDL 3.2.0.

       The  content  scale  is  the  expected  scale  for  content based on the DPI settings of the display. For
       example, a 4K display might have a 2.0 (200%) display  scale,  which  means  that  the  user  expects  UI
       elements to be twice as big on this display, to aid in readability.

       After window creation,

       SDL_GetWindowDisplayScale  ()  should  be  used  to query the content scale factor for individual windows
       instead of querying the display for a window and calling this function, as the per-window  content  scale
       factor  may  differ  from  the base value of the display it is on, particularly on high-DPI and/or multi-
       monitor desktop configurations.

displayID
              the instance ID of the display to query.

       Defined in SDL3/SDL_video.h

       SDL_GetDisplayContentScale - Get the content scale of a display.

       Returns the content scale of the display, or 0.0f on failure; call

       SDL_GetError () for more information.

•(3), SDL_GetWindowDisplayScale(3), •(3), SDL_GetDisplays(3)

Simple Directmedia Layer                           SDL 3.2.10                      SDL_GetDisplayContentScale(3)

#include"SDL3/SDL.h"floatSDL_GetDisplayContentScale(SDL_DisplayIDdisplayID);

       This function should only be called on the main thread.