Camera lookAt target changes when rotating parent node?

OpenGL is not a scene graph; there are no objects there is no camera! GluLookAt is not even OpenGL, it's just a helper function and it has no awareness of any transformation hierachy applied whatsoever. Since OpenGL doesn't deal with a scene and the glPushMatrix, glPopMatrix give a false feeling something bigger going on, you might have been lured into thinking about it in a wrong way.

The actual problem was with view and model matrices state. I mistakenly inverted view matrix after its position vector was already negated.So the right thing was just to multiply parent node model matrix with camera view matrix and that solves the problem.

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