struct vector3f
{
    float x;
    float y;
    float z;
};

struct Vertex
{
    float nx, ny, nz;
    float x, y, z;
};

Vertex jeden_quad[4] =
{

    {0.0f, 0.0f, 1.0f,  -1.0f,-1.0f, 1.0f },
    {0.0f, 0.0f, 1.0f,   1.0f,-1.0f, 1.0f },
    {0.0f, 0.0f, 1.0f,   1.0f, 1.0f, 1.0f },
    {0.0f, 0.0f, 1.0f,  -1.0f, 1.0f, 1.0f },
};