# Postprocessing masking. Applying post processing on separate objects
**URL:** https://discourse.threejs.org/t/postprocessing-masking-applying-post-processing-on-separate-objects/11496
**Category:** Questions
**Tags:** geometry, shaders, masking
**Created:** [December 9, 2019, 10:19pm UTC](https://discourse.threejs.org/t/postprocessing-masking-applying-post-processing-on-separate-objects/11496 "2019-12-09T22:19:23Z")
**Posts on this page:** 1
**Page:** 1
### Author:  [@kanistra](https://discourse.threejs.org/u/kanistra)
#### Post date: [December 9, 2019, 10:19pm UTC](https://discourse.threejs.org/t/postprocessing-masking-applying-post-processing-on-separate-objects/11496/1 "2019-12-09T22:19:23Z")
Hello, this is my first question on this board and i am learning vanilla js vs three js at the same time, so i apologies for newbie questions.
I am trying to apply postprocessing selectively.
I have two scenes - cubes and shadow. I want to apply bloom postprocessing only on shadow scene and then on the top of everything apply film pass.
Unfortunately no errors in console and i only see white blank screen.
Would greatly appreciate if someone can point me to the right direction.
Here is my code:
0 - Blueprints body { margin: 0;height: 100vh;background-color: white; } canvas { display: block;} #c {background-color: white;} nav {position: absolute;right: 10%;top:10%;} nav a {font-size:25px;;display: block;text-decoration: none;color:black;font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;margin:5% 0}
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