CompuServe Messages

Alec, no moving makes no difference, it's effective at any time, just don't forget to include objects that become between the camera and the one you are re-rendering. Like I said the ones that come between can have simple flat material applied with no texture map and change it's attributes to MATTE object – this will give you the desired outline but render that object faster than if it had texture maps and phong shading applied to it. This makes it invisible to the alpha channel but it will mask any objects going behind it. To see an example of this render one frame with at 32-bit with alpha-split on and then look at the main 24-bit image where you will see all the objects you rendered and then look at the 8-bit alpha channel file where you will see a "black-hole" where the matte object's outline is blocking any object behind it. However, if the object uses an opacity map you might be better off rendering it the way it was before without changing the material or attributes (I'll check this theory).