I rendered a image with shadow,specular,refletion,and some regular vray render elements in Vray 1.53 RC adv.After that ,I found a big problem.The Alpha channel in these passes are incorrect, they all contain all objects of the scene in alpha channel not only the special parts in each of the passes.
So, for example,in the shadow pass,I got a whole black image with a alpha channel includes all objects in this scene.But I need only shadow part in this alpha channel to composite.
When I rendered a image useing scanline renderer with standard max render elements ,this problem is not exist.
Please help!