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.
Get the content scale of a display.
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.