No, the advantage of deferred rendering is, that you don't need to render the whole geometry again for the projection part, a fullscreen quad or some bounding volume is enough. In this case you reconstruct the world position from the g-buffer and use it to project it into light space to access the shadow map.

No, the advantage of deferred rendering is, that you don't need to render the whole geometry again for the projection part, a fullscreen quad or some bounding volume is enough. In this case you reconstruct the world position from the g-buffer and use it to project it into light space to access the shadow map.

No, the advantage of deferred rendering is, that you don't need to render the whole geometry again for the projection part, a fullscreen quad or some bounding volume is enough.