Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_GetCurrentRenderOutputSize - Get the current output size in pixels of a rendering context.
HEADER FILE
Defined in SDL3/SDL_render.h
SYNOPSIS
#include "SDL3/SDL.h" bool SDL_GetCurrentRenderOutputSize(SDL_Renderer *renderer, int *w, int *h);
DESCRIPTION
If a rendering target is active, this will return the size of the rendering target in pixels, otherwise return the value of SDL_GetRenderOutputSize (). Rendering target or not, the output will be adjusted by the current logical presentation state, dictated by SDL_SetRenderLogicalPresentation ().
FUNCTION PARAMETERS
renderer the rendering context. w a pointer filled in with the current width. h a pointer filled in with the current height.
RETURN VALUE
Returns true on success or false on failure; call SDL_GetError () for more information.
THREAD SAFETY
This function should only be called on the main thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetRenderOutputSize(3) Simple Directmedia Layer SDL 3.2.8 SDL_GetCurrentRenderOutputSize(3)