Physically based volumetric clouds and skybox for Unity URP

On Unity 2021.3 LTS? Use Altos 2022 instead.


Easy to set up. Easy to use. Beautiful results. No coding required.

  • Fully dynamic and customizable sky.
  • Fully customizable Day Night Cycle.
  • Fully customizable Volumetric Clouds with high-quality TAA, Render Scaling, and Local or Skybox Rendering.
  • Realistic Sun, Moon and Stars Rendering.
  • Built-in atmospherics with horizon-blended depth fog.

All shaders, even Volumetrics, have been built in Shader Graph to enable you to easily extend core features and customize to your project.


Used by 100+ happy customers. Perfect 5-Star Rating.



What Our Customers Are Saying

  • "This asset does exactly what it says it does, and does it beautifully. Easy to install and configure, it gives a very atmospheric feel to your scenes. Great work."
  • "This asset is really marvelous and all the skies look breathtaking."
  • "I absolutely love this asset! It helped my project so much and the clouds look amazing! Thank so much for offering this Asset! :)"
  • "By far the best sky I found at a good price and very well documented."


If you're not happy, I'm not happy.

If you encounter any issues using this asset, we are here to help. If we can't resolve your problem, we will issue you a refund. (Please note: Refunds can only be issued within 6 months of the original asset purchase date).



Powerful Features

  1. Volumetric Clouds
    1. Drag-and-drop Volumetric Cloud setup.
    2. Easily control computational cost and performance impacts (profiled to <2ms at average quality settings).
    3. Flex your artistic muscle with cloud density, cloudiness, lighting intensity, sun color influence, sky color influence, cloud layer height and thickness, as well as base and detail noise scale and speed.
  2. 2D Clouds
    1. Set the speed for the cloud textures to pan through the skybox.
    2. Configure the base color and shaded color for the clouds to easily fit your color palette.
    3. Decide how much the sun influences the lighting of the clouds.
    4. Change how much the clouds are affected by the color of the skies.
    5. Easily transition from cloudy to clear skies with controllable cloud thresholds.
    6. Modify the cloud and cloud shading sharpness to customize the look of your clouds - super soft and fluffy, or really crisp and stylized.
    7. Uses custom UVs to ensure you can have clouds directly overhead without any UV “pulling” at the top of the skybox.
  3. Time of Day Configuration
    1. Configure any number of named "Times of Day" like Night, Dawn, Day, and Dusk with customized sky colors.
    2. Control the size and color of the sun to fit your game’s atmosphere.
    3. Easily skip to specific times in the day.
    4. Control how long it takes to transition between different times of day.
    5. Set the overall day length with a controllable slider to determine how long one real-life second is in-game.
  4. General
    1. Built-in blue noise dithering to prevent banding on soft sky gradients.
    2. Easy-to-use toggles and controls for both the Day/Night Manager and Skybox Material.


High Performance

Easily control your performance impact using built-in performance controls such as Render Scale settings and optional Moon, Stars, and Volumetric Clouds functionalities.



Versioning

Altos is tested and designed for Unity LTS releases. Altos 2021 is certified for builds targeting Unity 2020 LTS.



Constraints

  • Does not support VR
  • Does not support OpenGL platforms


Accessible and Quick Support

Please reach out to me directly at occasoftware@gmail.com or on Twitter @occasoftware if you have any problems or questions, or even if you need a little troubleshooting support :) Happy to help.



Used By

  • Protokoll Studios (@protokoll_sto) for their Rocks Pack - Low Poly (free) and Variant Rocks Pack - Low Poly ($4.99)