Custom Post Process Materials
The Unreal Engine ships with a variety of Post Process effects, enabling you to customize the look and feel of your mobile applications. There are times, though, when you'll want to create
custom Post Process Materials to implement your own effects (such as "VCR Static").
Adding effects to your mobile application requires the development of custom Post Process materials. When creating custom Post Process Materials for mobile applications, you should note that there
are some key things to consider. Specifically, it's important to note that custom Post Process Materials for mobile applications can only fetch from
PostProcessInput0 (Scene Color), Scene Depth,Custom Depth, and Custom Stencil with the following Blendable Locations.
- Before Tonemapping
- After Tonemapping
To learn more about Blendable Locations, read through our Post Process Materials reference page.
Currently, you cannot create custom Post Process materials for older Android devices that require 'mosaic' mode for HDR rendering. Finally, pixel depth information is not yet supported.
As this features requires Post-Processing to work correctly, Mobile HDR must be enabled. To enable Mobile HDR go to Project Settings > Engine > Rendering > Mobile and make sure that Mobile HDR is checked.
You now use Custom Depth Post Process option with the Mobile Rendering path. Custom Post Process Materails can now sample from Scene Depth, Custom Depth, Scene Color, and Custom Stencil.