---
name: "SDL_SetSurfaceBlendMode"
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_SetSurfaceBlendMode"
---

# SDL\_SetSurfaceBlendMode(3)

Set the blend mode used for blit operations.

## NAME

SDL\_SetSurfaceBlendMode - Set the blend mode used for blit operations.

## HEADER FILE

Defined in SDL3/SDL\_surface.h

## SYNOPSIS

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

**bool SDL\_SetSurfaceBlendMode(SDL\_Surface \*surface, SDL\_BlendMode blendMode);**

## DESCRIPTION

To copy a surface to another surface (or texture) without blending with the existing data, the blendmode of the SOURCE surface should be set to

**SDL\_BLENDMODE\_NONE** .

## FUNCTION PARAMETERS

- *surface*

  the  **SDL\_Surface**\
    structure to update.

- *blendMode*

  the  **SDL\_BlendMode**\
    to use for blit blending.

## 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\_GetSurfaceBlendMode**(3)](/SDL_GetSurfaceBlendMode/3.md)