inverse
Keywords: inverse, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> inverse - return the inverse matrix of a matrix

> ## Synopsis

>     float4x4 inverse(float4x4 A)
>     float3x3 inverse(float3x3 A)
>     float2x2 inverse(float2x2 A)

> ## Parameters

> A
>   Matrix to invert.

> ## Description

> Returns the inverse of the matrix A.

> ## Reference Implementation

> inverse for a float2x2 matrix can be implemented like this:

>     float2x2 inverse(float2x2 A)
>     {
>       float2x2 C;

>       float det = determinant(A);
>       C[0] = A._m11;
>       C[1] = -A._m01;
>       C[2] = -A._m10;
>       C[3] = A._m00;

>       return C / det;
>     }

> ## Profile Support

> inverse is supported in all profiles except fp20, vs_1_1, ps_1_1, ps_1_2 and ps_1_3.

> ## See Also

> determinant