SDL Wiki
(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Get the pixel density of a window.


float SDL_GetWindowPixelDensity(SDL_Window *window);

Function Parameters

window the window to query

Return Value

Returns the pixel density or 0.0f on failure; call SDL_GetError() for more information.


This is a ratio of pixel size to window size. For example, if the window is 1920x1080 and it has a high density back buffer of 3840x2160 pixels, it would have a pixel density of 2.0.


This function is available since SDL 3.0.0.


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