Datamosh Effect Unreal Engine

Datamosh is a post process shader that creates a frames blending effect by simulating a video editing technique in which the footage is manipulated to look 'trippy' or 'glitchy,' usually by manual compression.

Demo

Jam2go's video about datamoshing in Unreal

Epic Marketplace (FAB)

Documentation

Discord

Using engine classes, plugin injects the shader into the rendering pipeline, ensuring it is compatible with most post process effects after the default installation.

Technical details:

• Built-in post-process material example,
• Two rendering modes (Render Target and Screen),
• Automatically applies on viewport in Screen Rendering mode,
• Preview mode,
• Project settings and built-in blueprint functions,
• Debug console commands,
• Compatible with most post process effects,
• Small performance cost.

Important details:

• Due to engine limitations, control over some of the built-in features of the effect is only possible on the game thread (on the blueprint side). Therefore, please use the "Set Datamosh Parameters" blueprint function to control shader values. The mechanism is described in detail in the documentation.
• If you can't find the post-process material asset, enable the display of plugin folders in the content browser by clicking the gear icon in the top-right corner of the settings.
  
  

Performance

GPU	Average, ms
3060TI	Screen Rendering mode - 0.11ms Render Target mode - 0.16ms

Supported Development Platforms: Win64, Mac, Linux

Supported Target Build Platforms: Win64, Mac, Linux

Network Replicated: No

Current Version: 0.5.0

Changelog:

0.1:

• Early access.

0.2:

• Full code refactoring.
• Fixed an issue with artifacts appearing in the output texture, when using two or more active viewports simultaneously.
• Added common shader file for easier use in the future.
• Overall optimization of the effect calculations on the CPP side.
• Added new blueprints to control new feature settings.
• Redesigned the noise generation function in the shader.
• Added new effect features: effect motion, render buffer selection, draw distance for the depth buffer, new noise presets.
• Expanded effect monitoring capabilities using stat gpu and Unreal Insight.
• Extended version support.

0.2.2:

• Fix for potential crashes in engine version 5.4.4.

0.3:

• Refined depth handling in the shader for both scene depth and custom depth.

• Added ability to use Stencil with custom depth via the r.Datamosh.SetStencil command and blueprint.

• Introduced a feature to exclude objects from the effect in both custom and depth rendering passes using the exclude option r.Datamosh.ExcludeCustomDepth.

• Expanded the motion functionality to allow adjustments for both X and Y axis movement.

• Added the ability to change the noise "grain size" with the r.Datamosh.Noise.PerBlockSize command.

• Updated the Blueprint library to support new shader features and enhance ease of use.
  
  

0.4 (dev only)

0.5.0:

A significant part of the code has been reworked, with the addition of 4 new classes, structures, shaders, and assets in the plugin's content folder.

Two separate rendering modes have been added.

Added new mask shader.

Two render target assets for the effect and mask have been added, along with a material asset featuring a basic setup for utilizing the effect.

Plugin settings have been added under Plugins - Datamosh Effect in the Project Settings.

Several shader features have been introduced, accessible via the Blueprint library.

A UDatamoshWorldSubsystem class has been added for advanced rendering control of the effect, tailored to both gameplay and editor worlds.

A parameter structure, along with two enumerators for the plugin mode and mask shader mode, has been introduced.

Basic preview functionality (editor-only) has been added for effect visualization in Screen Rendering mode.

An enhanced logging and validation system has been implemented to ensure proper functionality of the effect.

Crashes when previewing the temporal buffer texture via the Vis command have been fixed.

Rendering the effect across multiple viewports simultaneously has been fixed (see point 7).

Shader code and integration with DatamoshCommon.ush in the .cpp section have been improved.

Most console commands and parameter management through them have been removed. Shader parameter control has been moved on the blueprint side.