The Book of Shaders by Patricio Gonzalez Vivo


Check whether any element of a boolean vector is true


bool all(bvec2 x)  
bool all(bvec3 x)  
bool all(bvec4 x)


x specifies the vector to be tested for truth.


any() returns true if any element of x is true and false otherwise. It is functionally equivalent to:

bool any(bvec x) {     // bvec can be bvec2, bvec3 or bvec4
    bool result = false;
    int i;
    for (i = 0; i < x.length(); ++i) {
        result |= x[i];
    return result;

See Also

any(), not()