---
name: "SDL_HINT_CPU_FEATURE_MASK"
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_HINT_CPU_FEATURE_MASK"
---

# SDL\_HINT\_CPU\_FEATURE\_MASK(3)

A variable that limits what CPU features are available.

## NAME

SDL\_HINT\_CPU\_FEATURE\_MASK - A variable that limits what CPU features are available.

## HEADER FILE

Defined in SDL3/SDL\_hints.h

## SYNOPSIS

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

**#define SDL\_HINT\_CPU\_FEATURE\_MASK** *SDL\_CPU\_FEATURE\_MASK"*

## DESCRIPTION

By default, SDL marks all features the current CPU supports as available. This hint allows to limit these to a subset.

When the hint is unset, or empty, SDL will enable all detected CPU features.

The variable can be set to a comma separated list containing the following items:

• "all"

• "altivec"

• "sse"

• "sse2"

• "sse3"

• "sse41"

• "sse42"

• "avx"

• "avx2"

• "avx512f"

• "arm-simd"

• "neon"

• "lsx"

• "lasx"

The items can be prefixed by '+'/'-' to add/remove features.

## AVAILABILITY

This hint is available since SDL 3.2.0.