cross

> # NAME

> cross - returns the cross product of two three-component vectors

> # SYNOPSIS

>       float3 cross( float3 a, float3 b );

>       half3  cross( half3 a, half3 b );

>       fixed3 cross( fixed3 a, fixed3 b );

> # PARAMETERS

> a

>   Three-component vector.

> b

>   Three-component vector.

> # DESCRIPTION

> Returns the cross product of three-component vectors a and b. The result is a three-component vector.

> # REFERENCE IMPLEMENTATION

> cross for float3 vectors could be implemented this way:

>       float3 cross(float3 a, float3 b)
>       {
>         return a.yzx * b.zxy - a.zxy * b.yzx;
>       }

> # PROFILE SUPPORT

> cross is supported in all profiles.

> Support in the fp20 is limited.

> # SEE ALSO

> dot