Strata Source: Difference between revisions
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: Compatible with {{src13|4}} (and older) branch models | : Compatible with {{src13|4}} (and older) branch models | ||
: The model format found in games such as {{hl2}}{{tf2}}{{portal}}{{css}}{{dods}} is now supported. | : The model format found in games such as {{hl2}}{{tf2}}{{portal}}{{css}}{{dods}} is now supported. | ||
; [[Clustered renderer]] | ; [[Clustered renderer]] | ||
: A technique which allows multiple dynamic [[lights]] to be rendered with [[cheap|little performance hit]]. | : A technique which allows multiple dynamic [[lights]] to be rendered with [[cheap|little performance hit]]. | ||
; [[WEBM]] video support, replacing older [[BIK|Bink]] videos | ; [[WEBM]] video support, replacing older [[BIK|Bink]] videos | ||
Revision as of 05:09, 1 June 2025
Strata Source (more informally known as Strata, and formerly known as the Chaos Engine) is a third-party 
Source engine branch using licensed code. It is a modified version of the latest version of 
CS:GO engine branch that combines the features of both CS:GO and the 
Portal 2 engine branch, along with many improvements that bring Source close to modern standards. This engine branch was first released publicly with the launch of 
Portal: Revolution, and is still in active development.
Features
Feature list from the Strata Source Wiki
New since the CS:GO engine branch:
- Native Direct3D 11 renderer
- Replaces Direct3D 9 renderer, and adds some new features that previous version of Direct3D doesn't have.
- Vulkan renderer on Linux, using DXVK to convert DX11 calls to Vulkan
- 64-bit executable
- Game runs on 64-bit on all platforms; 32-bit and Mac OS support has been dropped. 64-bit allows better performance and allows the game to access more than 4GB of RAM.
- PBR shaders
Introduces a new 
PBR shader that attempts to create realistic reactions to light
- Ported Portal 2 engine branch features
- Including but not limited to World Portals and Portal gun
- Expanded map limits (128k x 128k x 128k) via BSP v25 and increased entity cap
- Backwards compatibility
- Compatible with BSP v19-21
- Compatible with
Source 2013 (and older) branch models - The model format found in games such as
is now supported. - Clustered renderer
- A technique which allows multiple dynamic lights to be rendered with little performance hit.
- WEBM video support, replacing older Bink videos
- Increased framerate, lower file sizes, and easier to author
- New v7.6 VTF version
- Adds support for the higher-quality ATI1N, ATI2N, BC6H, and BC7 texture compression formats, as well as lossless
deflate or zstd compression on top of the existing image format, for reduced size. - Many improvements to Linux support
- Fully cross-platform engine tools and utils
- Improved MP3 support with addition of OGG (Vorbis, Opus, Speex and PCM supported) and FLAC audio formats
- Steam Audio
- Improved HRTF, environmental reflection effects, basic occulsion
- Many improvements to the
Hammer level editor, named 
Strata Hammer - Many code quality improvements (Refactors, cleanup, and C++20)
- Sentry crash report integration
- Replaced VPC with CMake.
- Scripting
- Supports Angelscript and VScript
Availability and usage
The following titles run on the Strata Source branch:
Portal 2: Community Edition
Momentum Mod- Portal: Revolution (Uses older version of P2:CE as a base)
The source code for this branch is not available. However, Authoring Tools exist for each game, located in the 
/bin/win64/ folder. Native Linux tools are shipped in the /bin/linux64/ folder, but the Windows binaries are also shipped on Linux to make it easier to run Windows-only tools with WINE.
See also
- Strata Source's Wiki
Mapbase, a mod for Source 2013 Singleplayer with similar goals
Alien Swarm Deferred- Strata Hammer
