Alien Swarm Deferred
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Alien Swarm Deferred was released in 2012. It's a third-party mod created by Kristjan Skutta a.k.a. Biohazard90.
This fork of 
Alien Swarm has support for deferred lighting and shadows (similar to 
Portal 2: Desolation and 
Black Mesa). It's among very few 
Source games that have dynamic shadows not based on projected textures, while still having its source code available to the public. Performance-wise, it is extremely impressive as the mod can support hundreds of dynamic shadows with very little performance impact.
Features
New since Alien Swarm:
- CSM
- Real time shadows and lighting from Light environment, Light, Projected texture, and Point spotlight entities.
Blinn–Phong reflection model- New reflections on Phong materials.
- Volumetric lighting
- Deferred lights are capable of enabling volumetrics that react to the environment in realtime.
- Source shader editor
- Make and edit shader graphs in real-time, in-engine.
- Light editor
- Edit your map's light entities dynamically.
Media
Availability
Lambda Wars
Director's Cut (Initially. Switched to 
Source 2013)- Portal 2: Desolation
Confirm:Some elements can be clearly seen in prerelease footage like the Light Editor, so its definietly uses some code from ASD
Bugs
- No hardware filtering support for
Advanced Micro Devices
See also
External links
- Download at Google Drive
- GitLab Repository Download Mirror
- 2013MP Port GitHub Repository
- YouTube - Deferred lighting in action.