# add (sm4 - asm)

Component-wise add of 2 vectors.

add[_sat] dest[.mask], [-]src0[_abs][.swizzle], [-]src1[_abs][.swizzle] |
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Item | Description |
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[in] The address of the result of the operation. | |

[in] The vector to add to | |

[in] The vector to add to |

## Remarks

The following table shows the results obtained when executing the instruction with various classes of numbers, assuming that neither overflow or underflow occurs. F means finite real number.

src0 src1-> | -inf | -F | -denorm | -0 | +0 | denorm | +F | +inf | NaN |

-inf | -inf | -inf | -inf | -inf | -inf | -inf | -inf | NaN | NaN |

-F | -inf | -F | src0 | src0 | src0 | src0 | +-F or +-0 | +inf | NaN |

-denorm | -inf | src1 | -0 | -0 | +0 | +0 | src1 | +inf | NaN |

-0 | -inf | src1 | -0 | -0 | +0 | +0 | src1 | +inf | NaN |

+0 | i-inf | src1 | +0 | +0 | +0 | +0 | src1 | +inf | NaN |

+denorm | -inf | src1 | +0 | +0 | +0 | +0 | src1 | +inf | NaN |

+F | -inf | +-F or +-0 | src0 | src0 | src0 | src0 | +F | +inf | NaN |

+inf | NaN | +inf | +inf | +inf | +inf | +inf | +inf | +inf | NaN |

NaN | NaN | NaN | NaN | NaN | NaN | NaN | NaN | NaN | NaN |

This instruction applies to the following shader stages:

Vertex Shader | Geometry Shader | Pixel Shader |
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x | x | x |

## Minimum Shader Model

This function is supported in the following shader models.

Shader Model | Supported |
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Shader Model 5 | yes |

Shader Model 4.1 | yes |

Shader Model 4 | yes |

Shader Model 3 (DirectX HLSL) | no |

Shader Model 2 (DirectX HLSL) | no |

Shader Model 1 (DirectX HLSL) | no |

## Related topics

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