Rogue Squadron was on the N64 and didn't have self-shadowing. Rogue Leader's self-shadowing looked terrible up close, with a really weird "sawtooth" effect along the edges. And no, the player's craft was not the only vehicle with the effect. The AT-ATs, AT-STs, and your wingmen all had it--I always blew up the TIEs too fast to notice if it appeared on them once they got close. Anyway, they fixed those artifacts in Rebel strike, but the effect on human characters was completely out of whack. The self-shadowing in Gun looks fine, as far as Gamecube effects go. By that I mean that it's not any more inaccurate, blocky, or artifacty than your usual shadow maps on that machine.