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Accretion Disk

zubetto - Materials - Dec 3, 2021

Volumetric shaders imitating such astrophysical structures and phenomena as accretion disks, jets and supernovae through which you can fly or orbit around them, are the core of this project.

  • Supported Platforms
  • Supported Engine Versions
    4.22, 4.24 - 4.27
  • Download Type
    Complete Project
    This product contains a full Unreal Engine project folder, complete with Config files, Content files and .uproject file, which can be used as a template to create a new project.

The main volumetric shaders are implemented as Post Process Materials that blend well with opaque objects in a scene, but objects with translucent materials require special care, because the correctness of the final image depends on relative positions of volumetric shapes and translucent objects. In this project, the main post process materials are rendered before translucency and thus should be farther from the camera than translucent objects (see Blendable Location if you want to change this rendering order).


Material Functions are integral to this project as they are building blocks of most materials thereby providing modularity and great possibilities for customization. The purpose of some of them is specific to this project, while others are of a general purpose and can be useful in any work.


Another essential part is the special blueprints intended to facilitate the setting of certain parameters of the volumetric materials and adding these materials to the scene. Also you can find auxiliary blueprints that were used to make the demo level more interactive and entertaining.


Textures used in the volumetric materials are generated procedurally. This project includes all the materials and blueprints needed to create such textures.


Performance impact and visual quality can vary greatly depending on the material complexity and the number of samples. Moreover, the image quality depends on the distance that the camera rays travel within the volume, and therefore the quality can change noticeably depending on the position of the camera and the angle of view. Please, try the demo first to assess the balance between performance impact and visual quality and decide if this suits your needs (in the demo level press Ctrl + Num 1 to toggle the FPS counter and then try different visual settings which can be accessed by pressing the M key).


Technical Details

Features:

  •  the main volumetric shaders are implemented as post process materials
  •  material functions are integral to this project as they are building blocks of most materials
  •  the main material functions use custom expressions
  • textures used in the volumetric materials are generated procedurally
  • for correct rendering of the brightness of volumetric materials, Pre-Exposure should be disabled in the project settings

Number of Main Volumetric Materials: 7

Number of Main Volumetric Material Instances: 10

Number of Unique Materials (including architectural): 39

Number of Textures 2D: 8

Number of Textures 3D: 3

Texture Resolutions: from 512 to 4096x2048

Supported Development Platforms:

Windows: Yes

Mac: No

Documentation: Project Description

Important Notes: Materials not tested with Real-Time Ray Tracing!