proj

    static Float4x4 PerspectiveLH(Float fov, Float aspectRatio, Float near, Float far)
    {
        Float2 angles = Math::SinCos(0.5f * fov);

        Float height = angles.y / angles.x;
        Float width = height / aspectRatio;
        Float range = far / (far - near);

        Float4x4 matrix;
        matrix[0][0] = width;
        matrix[0][1] = 0.0f;
        matrix[0][2] = 0.0f;
        matrix[0][3] = 0.0f;

        matrix[1][0] = 0.0f;
        matrix[1][1] = height;
        matrix[1][2] = 0.0f;
        matrix[1][3] = 0.0f;

        matrix[2][0] = 0.0f;
        matrix[2][1] = 0.0f;
        matrix[2][2] = range;
        matrix[2][3] = 1.0f;

        matrix[3][0] = 0.0f;
        matrix[3][1] = 0.0f;
        matrix[3][2] = -range * near;
        matrix[3][3] = 0.0f;

        return matrix;
    }