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

NAME
SDL_RenderClear - Clear the current rendering target with the drawing color.
HEADER FILE
Defined in SDL3/SDL_render.h
SYNOPSIS
#include "SDL3/SDL.h" bool SDL_RenderClear(SDL_Renderer *renderer);
DESCRIPTION
This function clears the entire rendering target, ignoring the viewport and the clip rectangle. Note, that clearing will also set/fill all pixels of the rendering target to current renderer draw color, so make sure to invoke SDL_SetRenderDrawColor () when needed.
FUNCTION PARAMETERS
renderer the rendering context.
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_SetRenderDrawColor(3) Simple Directmedia Layer SDL 3.2.8 SDL_RenderClear(3)