ch24p3_inverse.ps

游戏开发特殊技巧-special.effects.game.programming

// this pixel shader renders an inverted image.

ps.1.1

def c1, 0.25f, 0.25f, 0.25f, 0.25f

tex t0 
tex t1
tex t2
tex t3

mov r0, 1-t0