sdlGetWindowDisplayScale function

double sdlGetWindowDisplayScale(Pointer<SdlWindow> window)

Get the content display scale relative to a window's pixel size.

This is a combination of the window pixel density and the display content scale, and is the expected scale for displaying content in this window. For example, if a 3840x2160 window had a display scale of 2.0, the user expects the content to take twice as many pixels and be the same physical size as if it were being displayed in a 1920x1080 window with a display scale of 1.0.

Conceptually this value corresponds to the scale display setting, and is updated when that setting is changed, or the window moves to a display with a different scale setting.

\param window the window to query. \returns the display scale, or 0.0f on failure; call SDL_GetError() for more information.

\threadsafety This function should only be called on the main thread.

\since This function is available since SDL 3.1.3.

extern SDL_DECLSPEC float SDLCALL SDL_GetWindowDisplayScale(SDL_Window *window)

Implementation

double sdlGetWindowDisplayScale(Pointer<SdlWindow> window) {
  final sdlGetWindowDisplayScaleLookupFunction = libSdl3.lookupFunction<
      Float Function(Pointer<SdlWindow> window),
      double Function(Pointer<SdlWindow> window)>('SDL_GetWindowDisplayScale');
  return sdlGetWindowDisplayScaleLookupFunction(window);
}