NAME¶

SDL_RenderReadPixels - Read pixels from the current rendering target.

HEADER FILE¶

Defined in SDL3/SDL_render.h

SYNOPSIS¶

#include "SDL3/SDL.h"

SDL_Surface * SDL_RenderReadPixels(SDL_Renderer *renderer, const SDL_Rect *rect);

DESCRIPTION¶

The returned surface should be freed with

SDL_DestroySurface () WARNING : This is a very slow operation, and should not be used frequently. If you're using this on the main rendering target, it should be called after rendering and before SDL_RenderPresent ().

FUNCTION PARAMETERS¶

renderer

the rendering context.

rect

an SDL_Rect
structure representing the area in pixels relative to the to current viewport, or NULL for the entire viewport.

RETURN VALUE¶

( SDL_Surface
*) Returns a new SDL_Surface
on success or NULL on failure; call SDL_GetError () for more information.

THREAD SAFETY¶

You may only call this function from the main thread.

AVAILABILITY¶

This function is available since SDL 3.1.3.