Keywords: Graphics, Volumetric Rendering, Voxel, Voxelization

Forums

Horizon:Zero Dawn Cloud System
https://www.gamedev.net/forums/topic/680832-horizonzero-dawn-cloud-system/

Papers

The Real-time Volumetric Cloudscapes of Horizon:Zero Dawn
https://www.guerrilla-games.com/read/the-real-time-volumetric-cloudscapes-of-horizon-zero-dawn
http://killzone.dl.playstation.net/killzone/horizonzerodawn/presentations/Siggraph15_Schneider_Real-Time_Volumetric_Cloudscapes_of_Horizon_Zero_Dawn.pdf

Real-time rendering of volumetric clouds
http://www.diva-portal.org/smash/get/diva2:1223894/FULLTEXT01.pdf

Real-Time Volumetric Rendering
http://patapom.com/topics/Revision2013/Revision%202013%20-%20Real-time%20Volumetric%20Rendering%20Course%20Notes.pdf

Stormscapes: Simulating Cloud Dynamics in the Now
https://storage.googleapis.com/pirk.io/papers/Haedrich.etal-2020-Stormscapes.pdf
http://computationalsciences.org/publications/haedrich-2020-stormscapes.html

A Voxel Generator Based on Autoencoder
https://www.mdpi.com/2076-3417/12/21/10757

Source & Examples

Source & Examples - Fragments

A collection of HLSL functions one can include to use spherical harmonics in shaders. This repository can be simply be used as a submodule.
https://github.com/sebh/HLSL-Spherical-Harmonics

An OpenGL sample that demonstrates Volumetric Lighting using a frustum-aligned voxel grid and compute shaders.
https://github.com/diharaw/VolumetricLighting

A basic Volume Renderer mainly for Medical Images like CT-Scans and MRI Images
https://github.com/gallickgunner/Volume-Renderer

An OpenGL sample that implements volumetric clouds using ray marching and compute shaders.
https://github.com/diharaw/volumetric-clouds

Source & Examples - Voxel

Cubiquity is an experimental micro-voxel engine written in C++ and released into the public domain.
https://github.com/DavidWilliams81/cubiquity

A simple voxel engine written from the ground up in C++ and OpenGL
https://github.com/JamesRandall/SimpleVoxelEngine

Handmade voxel engine
https://github.com/TheNumbat/Exile
https://thenumb.at/Voxel-Meshing-in-Exile/

A Lightweight Mesh Voxelization Library with OpenGL Geometry Shader
https://github.com/skanti/Mesh-Voxelization-OpenGL-Geometry-Shader

Source & Examples - Quadmesh (Billboard)

Fluffy stylized trees tutorial, using quadmesh-to-billboards shader in Unity
https://www.youtube.com/watch?v=iASMFba7GeI

Quadmesh Billboard Foliage - Houdini to Unreal
https://www.artstation.com/blogs/mohamad_salame1/AyAL/quadmesh-billboard-foliage-houdini-to-unreal

Fluffy Material for UE5 - Quadmesh to Billboards (Recommended)
https://yamato3d.gumroad.com/l/UE-Fluffy-Mat

Realistic smoke lighting with 6-way lighting (Explosion) in VFX Graph (Recommended)
https://twitter.com/FavrelO/status/1634236736254386178
https://vimeo.com/806149701#_=_
https://blog.unity.com/engine-platform/realistic-smoke-with-6-way-lighting-in-vfx-graph

Assets

Assets - Fragments

Expanse - Volumetric Skies, Clouds, and Atmospheres in HDRP
https://assetstore.unity.com/packages/tools/particles-effects/expanse-volumetric-skies-clouds-and-atmospheres-in-hdrp-192456

An extensive tool to control dynamic time of day and weather settings using realistic volumetric clouds and atmosphere.
https://www.unrealengine.com/marketplace/en-US/product/sky-creator


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