say, i want to use different postprocessing shaders on different objects. my only idea how this could be possible is this:

- execute vs/ps of objects
- render scene with object 1 to Texture A
- render scene with object 2 to Texture B
- apply PP-Shader 1 to Texture A
- apply PP-Shader 2 to Texture B
- Blend Textures A & B and draw on screen

is this basically the way to do? and if yes, how? i don´t know how to prevent drawing specified objects between render-stages

you'll need

a) MRTs (multiple render-targets) to render in different textures, the object shader has to be modified for this (but that's not that hard)
or
b) multiple views and use either material-events or ent.parent in combination with view.genius to hide the entities for a specific view