###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.)
# SDL_RenderSetViewport

Set the drawing area for rendering on the current target.

## Header File

Defined in [SDL_render.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_render.h), but apps should _only_ `#include "SDL.h"`!

## Syntax

```c
int SDL_RenderSetViewport(SDL_Renderer * renderer,
                          const SDL_Rect * rect);

```

## Function Parameters

|                  |                                                                                                                    |
| ---------------- | ------------------------------------------------------------------------------------------------------------------ |
| **renderer**     | the rendering context                                                                                              |
| **rect**         | the [SDL_Rect](SDL_Rect) structure representing the drawing area, or NULL to set the viewport to the entire target |

## Return Value

Returns 0 on success or a negative error code on failure; call
[SDL_GetError](SDL_GetError)() for more information.

## Remarks

When the window is resized, the viewport is reset to fill the entire new
window size.

## Version

This function is available since SDL 2.0.0.

## See Also

* [SDL_RenderGetViewport](SDL_RenderGetViewport)

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[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction)