I want to create an effect where everything that’s in the shadow of a moving light gets desaturated or maybe some other effect. I’m no graphics/ue4 expert so I’m not sure on how to achieve it:
I guess either:
- Add a “normal” light and somehow change how it affects the pixels in the dark.
- Do tons of line traces and create a texture based on the results (similar to the fog of war tutorial posted on these forums) and use that in a custom post-process step.
- Render the black objects to a texture, do collision checks on the 2d grid and use that in a post-process step.
Any other ideas or how to actually do this?