---
name: "SDL_GL_SetAttribute"
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_GL_SetAttribute"
---

# SDL\_GL\_SetAttribute(3)

Set an OpenGL window attribute before window creation.

## NAME

SDL\_GL\_SetAttribute - Set an OpenGL window attribute before window creation.

## HEADER FILE

Defined in SDL3/SDL\_video.h

## SYNOPSIS

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

**bool SDL\_GL\_SetAttribute(SDL\_GLAttr attr, int value);**

## DESCRIPTION

This function sets the OpenGL attribute **attr** to **value** . The requested attributes should be set before creating an OpenGL window. You should use

**SDL\_GL\_GetAttribute** () to check the values after creating the OpenGL context, since the values obtained can differ from the requested ones.

## FUNCTION PARAMETERS

- *attr*

  an  **SDL\_GLAttr**\
    enum value specifying the OpenGL attribute to set.

- *value*

  the desired value for the attribute.

## 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\_GL\_GetAttribute**(3)](/SDL_GL_GetAttribute/3.md), **•**(3), [**SDL\_GL\_ResetAttributes**(3)](/SDL_GL_ResetAttributes/3.md)