thanks for answer, i`ve been studie and im a little close to the answer but withour results yet. is not problem with the type of effect, becouse with any other texture (feedback for example) when i want to calculate “radial” for each object, the texture do the calculations but always with the same center, the center of the screen. so i need to transform that coordinates for each object. i dont know exactly how. but, if i have an object in (-100, 0, 0) i need to use like it was the center of the screen.
in this images you will see how the center is always the same (the center of the screen) and it doest transform when the sphere is moving.
but maybe im also wrong… but how about i`ve multiples objects? i would not need multiples fbos for each one?