@futurebird @syllopsium @Seruko @cstross @GossiTheDog In the UK since 1995 it’s an unequivocal yes:
(7) “ Pseudo-photograph ” means an image, whether made by computer-graphics or otherwise howsoever, which appears to be a photograph.
(8) If the impression conveyed by a pseudo-photograph is that the person shown is a child, the pseudo-photograph shall be treated for all purposes of this Act as showing a child and so shall a pseudo-photograph where the predominant impression conveyed is that the person shown is a child notwithstanding that some of the physical characteristics shown are those of an adult.