Get the content scale of a display.
float SDL_GetDisplayContentScale(SDL_DisplayID displayID);
|displayID||the instance ID of the display to query|
Returns The content scale of the display, or 0.0f on error; call SDL_GetError() for more details.
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.
This function is available since SDL 3.0.0.