opengl cube map orientation

cubemapFaceDirections.cpp

// new basis X Y Z to place the camera so that it's a left handed Y-UP Z-Forward system    
const Eigen::Vector3f cubemapFaceDirections[6][3] = {
        {{0, 0, 1}, {0, -1, 0}, {-1, 0, 0}},  // negx
        {{0, 0, 1}, {0, -1, 0}, {1, 0, 0}},   // posx
        {{1, 0, 0}, {0, 0, -1}, {0, -1, 0}},  // negy
        {{1, 0, 0}, {0, 0, 1}, {0, 1, 0}},    // posy
        {{-1, 0, 0}, {0, -1, 0}, {0, 0, -1}}, // negz
        {{1, 0, 0}, {0, -1, 0}, {0, 0, 1}},   // posz
    };