Man page - sdl_setrenderviewport(3)

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Package: libsdl3-doc
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SDL_SetRenderViewport - Set the drawing area for rendering on the current target.

Defined in SDL3/SDL_render.h

#include "SDL3/SDL.h"

bool SDL_SetRenderViewport(SDL_Renderer *renderer, const SDL_Rect *rect);

Drawing will clip to this area (separately from any clipping done with

SDL_SetRenderClipRect ), and the top left of the area will become coordinate (0, 0) for future drawing commands.

The area’s width and height must be >= 0.

Each render target has its own viewport. This function sets the viewport for the current render target.

renderer

the rendering context.

rect

the SDL_Rect

structure representing the drawing area, or NULL to set the viewport to the entire target.

Returns true on success or false on failure; call

SDL_GetError () for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.