---
name: "SDL_RenderFillRect"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_RenderFillRect"
---

# SDL\_RenderFillRect(3)

Fill a rectangle on the current rendering target with the drawing color at subpixel precision.

## NAME

SDL\_RenderFillRect - Fill a rectangle on the current rendering target with the drawing color at subpixel precision.

## HEADER FILE

Defined in SDL3/SDL\_render.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**bool SDL\_RenderFillRect(SDL\_Renderer \*renderer, const SDL\_FRect \*rect);**

## FUNCTION PARAMETERS

- *renderer*

  the renderer which should fill a rectangle.

- *rect*

  a pointer to the destination rectangle, or NULL for the entire rendering target.

## 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\_RenderFillRects**(3)](/SDL_RenderFillRects/3.md)