random material and object IDs

hi. most rendering softwares have option tu render a pass with random material and object colors on one shot at once. blender has such nodes like ID but this should be followed by setting an ID for each material or object. we need an output pass that will show all IDs on one shot. i already have an extension that randomizes IDs for all objects and materials. all i need now is a pass wich shows all visible IDs at once on the renderresult. one pass for material IDs and other for object IDs. all these are for easier work in photoshop.