---
name: "SDL_FillSurfaceRect"
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_FillSurfaceRect"
---

# SDL\_FillSurfaceRect(3)

Perform a fast fill of a rectangle with a specific color.

## NAME

SDL\_FillSurfaceRect - Perform a fast fill of a rectangle with a specific color.

## HEADER FILE

Defined in SDL3/SDL\_surface.h

## SYNOPSIS

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

**bool SDL\_FillSurfaceRect(SDL\_Surface \*dst, const SDL\_Rect \*rect, Uint32 color);**

## DESCRIPTION

**color** should be a pixel of the format used by the surface, and can be generated by  **SDL\_MapRGB** () or  **SDL\_MapRGBA** (). If the color value contains an alpha component then the destination is simply filled with that alpha information, no blending takes place.

If there is a clip rectangle set on the destination (set via

**SDL\_SetSurfaceClipRect** ()), then this function will fill based on the intersection of the clip rectangle and **rect** .

## FUNCTION PARAMETERS

- *dst*

  the  **SDL\_Surface**\
    structure that is the drawing target.

- *rect*

  the  **SDL\_Rect**\
    structure representing the rectangle to fill, or NULL to fill the entire surface.

- *color*

  the color to fill with.

## RETURN VALUE

Returns true on success or false on failure; call

**SDL\_GetError** () for more information.

## THREAD SAFETY

This function is not thread safe.

## AVAILABILITY

This function is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_FillSurfaceRects**(3)](/SDL_FillSurfaceRects/3.md)