2.1.1

Bug Fixes

Updated Render Passes so that they no longer call the CameraColorTarget outside of the RenderPass itself.

Housekeeping

Added a warning that will appear on versions of Unity prior to the 2021 LTS to help ensure users are aware when they are running Altos on an incompatible version of Unity.
Renamed some Render Passes classes to more accurately reflect the function of each class.
Removed now-unnecessary Version Defines from the Assembly Definition.

2.1.0

Major Update

The Altos 2022 Major Upgrade starts with release 2.1.0.

Editor Version Update

Altos will now be mainlined against 2021 LTS. All future releases will target 2021 LTS.

Bug Fixes

The cloud layer will no longer attempt to integrate with TAA Results during the first rendering frame. This improves first startup integration speed and screenshot quality.

2.0.0

Namespace Update

Changed namespace to be more consistent with other OccaSoftware products, which use the following namespace format: OccaSoftware.Productname. The new namespace for the core functions for this asset is now OccaSoftware.Altos. The editor namespace is now OccaSoftware.Altos.Editor. I don't expect future breaking namespace changes in this or other packages. This release is labelled as a major change for this reason.

Bug Fixes

Custom Passes within Altos no longer attempt to run during Reflection Probe camera passes. This resolves an issue causing Reflection Probes to return black when Altos custom passes were running.
Removed an unnecessary Motion Vectors flag setting from the Volumetric Cloud Volume script resulting in Console Warnings.

Version 1.11.4

Bug Fix

Corrected a TAA rendering issue that would crop up when multiple viewports were open simultaneously in the editor.

Version 1.11.3

Bug Fix

Corrected a Render Texture sampling issue that was causing Motion Vector-based reprojection to swim or distort on the screen in some cases.

Version 1.11.2

Bug Fix

Corrected the Altos.Editor assembly definition so that Editor-only files are correctly excluded from builds.

Version 1.11.1

New Features

Introduced Procedural Weathermaps, which dramatically improve the overall structure of the cloud distribution. These come with new parameters to give you more control over your weathermaps, such as: Weathermap Velocity, Weathermap Scale, and Weathermap Value Range.
Texture-based Weathermaps can now pan through space, with the introduction of the Weathermap Velocity parameter for Texture-based Weathermaps.
Improved High Altitude Cloud Rendering
Added another 2D Cloud texture that will now be the default for Skybox and High Altitdue Clouds.

Version 1.10.1

New Features

Introduced Camera Motion Vector-based Reprojection for Temporal Anti-Aliasing.

Version 1.9.7

Bug Fixes

Fixed an issue where the Render Features would attempt to execute even in scenes without a Skybox Director present. Going forward, Skybox Director must be present in any scene where you want any Altos Render Features to execute. These Render Features subscribe to the scene changed function and check the active scene upon change for their corresponding base class to be present (Star Object, Moon Object, Cloud Volume, Time of Day Manager). If the base class is not present at the time of scene load and is injected later, you will need to manually refresh the render features to ensure they pick up their references.
Fixed an issue where distant clouds would pop out of view when entering the cloud layer from below. Distant clouds now render correctly at all times.
Added VFX Graph define to eliminate errors experienced when importing Altos into a project where VFX Graph is not present. However, it is critical that you import VFX Graph first, before importing the Altos asset to your project. If you have imported Altos prior to importing VFX Graph, delete your OccaSoftware/Altos file path and re-import the asset so that VFX Graph can correctly configure the asset on import. If you do not do this, the asset will throw errors.
Cleaned up all scripts to be correctly scoped within publisher namespace (OccaSoftware).

Version 1.9.6

Bug Fixes

Corrected a namespace access issue.

Version 1.9.5

Bug Fixes

Fixed a star, moon, and cloud rendering issue for URP 12+. Note that this fix comes with the introduction of an Assembly Definition for the Altos folder path.
Fixed a type redefinition in the Clouds HLSL.hlsl definition that resulted in shader errors in Unity 2021.2+.

Version 1.9.4

Bug Fixes

Fixed a star rendering issue for Unity 2020.3+

Minor Adjustments

Renamed Readme + Main Folder consistent with name change from Skies to Altos

Version 1.9.3

Minor Adjustments

Fixed cloud rendering issue for Unity 2020.3+
Added Weathermap System.

This system enables users to dramatically increase level of detail of cloud data by predefing cloud "zones" and using volume textures to add detail. This is in contrast to the prior system, where the base volume texture itself was used to define cloud zones, thereby failing to fully take advantage of the value of the 3D texture data.

Added RenderScale, Planet Radius, and Volume Channel Influence Falloff default options
Sterilized tiling values for Skybox Clouds
Added 6 new seamless tiling textures

5 abstract noise textures (Clouds, Fire, Flower, Waves, Petals)
1 Weather Map texture (Weather Map 1)

Cleaned up file hierarchy
Various performance improvements

Version 1.9.2

Minor Adjustments

Renamed from Skies to Altos
Added in-scattering support for clouds
Extended some editor options
Slightly adjusted cloud modeling formulas
Replaced the HG Forward/Back Blend term with an HG Max term that chooses the greater of the forward and back terms.
Changed sun shape definition formula for skybox
3D Textures now correctly include an alpha channel

Version 1.9.1

Minor Fixes

Added horizon cutoff (clouds no longer render below the horizon)
Clamped Henyey-Greenstein Coefficients to prevent clipping artifacts at high values
Corrected High Altitude Cloud Rendering formulas
Added lighting support for high altitude clouds

Version 1.9.0

Feature Update

Revisited Volumetric Cloud Rendering Systems.

Clouds now render using physically-based lighting and rendering algorithms.
Clouds now are configured using a completely standalone editor using a Cloud Definition construct.
Clouds come with 3 Volumetric Noise types (Perlin, Perlin-Worley, Worley) and 4 Volumetric Noise Quality levels (Low, Medium, High, Ultra)
Clouds now supports low-altitude volumetric rendering with up to 3 levels of detail (Base, Detail 1, Detail 2) and high-altitude 2d rendering (3 textures) along with the pre-existing skybox cloud rendering (2 textures).
Clouds also support Temporal Anti-Aliasing, full control over render scale (continous from 0.1x to 1x)
Clouds now also support Skybox OR Local Rendering, allowing the clouds to be rendered in front of opaque objects in the scene.

Revisited Star and Moon Rendering Systems.

Stars now render more accurately.
The moon is now rendered in full 3d
The moon now supports physically accurate and controllable phases
The moon is now rendered using a rendering pass within the Stars Rendering Feature. The Stars Rendering Feature now acts as a generic Celestial Bodies Rendering Feature.
Stars are defined using a Star Definition object.
Moon is defined using a Moon Definition object.

Improved Performance

Improved the performance of the Time of Day systems by moving several methods from Update to On-Demand functionality.

Version 1.8.0

Feature Update

Added controls that enable you to blend Volumetric Clouds with the Horizon to integrate with the Depth Fog functionality.
Added parameters to give finer control over Volumetric Cloud alpha fadeout near the horizon.
Added an Stars Rendering Feature that enables you to ensure Stars are always rendered behind Volumetric Clouds.

Housekeeping

Cleaned up naming conventions in some Render Features.
Updated readme docs to reflect these new functionalities.
Cleaned up assets that were associated with features that were simplified to no longer require direct material references.
Fixed terrain import data so that it includes layer data needed for the demo scene.

Version 1.7.0

Feature Update

Added one-click setup for the hierarchy and Time Of Day Manager configuration. It is now much easier to set up this asset in new scenes.
Sun and Moon Lamp light configuration now uses light temperature rather than light color to enable more realistic lighting results. This is optional, but enabled by default, and can be switched back to using color by disabling the "use light temperature" option on each directional light.
Moved Stars to a persistent game object. Stars will now appear in the Scene view.

Bug Fixes

Fixed an issue that resulted when the Render Clouds command buffer shared the same command buffer designation as other render features.

Version 1.6.0

Feature Update

Added a Moon + Moon Shadowing support.
Added horizon-blended fog into the Skybox.
Added a Depth Fog image post effect, configurable from the Skybox Definition editor.
Improved the quality of interaction between the Sun and the Volumetric Clouds.
Updated file structure from Assets/Skies to Assets/OccaSoftware/Skies as per Unity Guidelines.

Version 1.5.0

Feature Update

Improved stars.

Version 1.4.0

Feature Update

The Skybox Definition inspector will now show you the current in-game time in hh:mm:ss format to enable easier debugging.
The Skybox Definition inspector will now cache the Time of Day and retain it upon entering and exiting playmode.

Bug Fix

Changes to your Skybox Definition will now be saved when exiting and re-launching the Unity Editor.
Moved the "Volumetric Clouds Merge Pass" Shader into the /Shaders/Resources folder so that it is correctly included during a Build.

Version 1.3.1

Bug Fix

Volumetric Cloud Rendering now works in more recent versions of Unity.

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