def PrepareAOstep(self, nsteps, shadowmap):
if not self.DoingAO(): return True
if not self.AOstarted: self.PrepareAOstart()
AOgpu2.Bind()
if ShadowMap.validView(self.DirV[self.AOdoneLvl]): ao = AOgpu2(self.DirV[self.AOdoneLvl], self, len(self.DirV), shadowmap)
AOgpu2.UnBind()
self.AOdoneLvl += 1
return (self.AOdoneLvl >= len(self.DirV))
