I just learned how to use render layers , but i have two problems.
I want the object on layer 2 ( middle cube) wich is blurred to be behind the 1st cube , not like now that its just mixed , like the example.
the other thing that happens , is that first blender renders the first layer , and then it render the other and mix both renders ,but when this happens i dont know why the final render gets darker ,
another question , by self experience i know that if i export a tga for example with a cube a light and the background all black , it renders an image with everything that was the black background as alpha ,
so , can i use a color background an still use alpha ? it seems that if i use a color for the backgrounf this goes to the tga as a semi alpha color , how do i render a composition with many objects on different layers and a blue backround for example ?