The Source Engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.

The Source engine was first shown to the world by being the power-horse behind the hugely anticipated Half-Life 2 which was released in late 2004. Since then the Source Engine has been upgraded with the release of such titles as Half-Life 2: Lost Coast, Team Fortress 2 and the Left 4 Dead series to name a few.

Whilst it has been years since the release of the Source Engine they haven't yet unveiled a 'next-generation engine' as the Source engine is always updating and is just as relevant in the gaming world today if not more than when it debuted in 2004. It has been aided by the release of the free Source Development Kit (SDK) which include such features as HDR for developers to use in their projects. Hence the reasons stated we have yet to see 'Source Engine 2'.

On July 10th 2012, Valve released the 'Source Filmmaker' - a freeware client to allowed anyone to make movies inside the Source Engine. More information on the Source Filmmaker can be found here.

Below you can find a list of amazing features that the Source Engine boasts:

Renderer

  • Version 2.0 (and below) shaders, bump mapping, LOD on models and world
  • Author shaders with HLSL
  • Cube and environment mapping
  • Dynamic lights, vertex lighting and light maps, many light types including flickering, pulsing etc.
  • High-Dynamic Range lighting
  • Water with refraction and fresnel effects
  • Advanced particle system that can emit sprites or models
  • Projected shadows allow for a large number of characters per scene
  • Occluder entities for visibility blocking
  • Indoor/Outdoor environments
  • Deformable terrain
  • 3D skyboxes extend the horizon and add parallax on distant objects
  • Dynamically rendered organics (grass, trees etc)
  • Subdivision surfaces, diffuse & specular bump maps
  • Real-time radiosity lighting
  • Effects include but are not limited to: particles, beams, volumetric smoke, sparks, blood, environmental effects like fog and rain
  • Scalability
  • Dx6-Dx9 hardware supported

Materials System

  • Instead of traditional textures, Source defines sets of materials that specify what the object is made from and the texture used for that object. A material specifies how an object will fracture when broken, what it will sound like when broken or dragged across another surface, and what that object’s mass and buoyancy are. This system is much more flexible than other texture only based systems.
  • Materials can interact with objects or NPCs such as mud or ice for vehicles to slide/lose traction on.

Multiplayer Network Code

  • Time and gamer tested by millions of gamers around the world
  • Support for both LAN based multiplayer and Internet based multiplayer games
  • Prediction analysis for interpolating collision/hit detection
  • Optimizations for high-latency, high-packet loss 56k connections

Advanced Characters

  • Detailed and believable characters
  • Realistic eyes
  • Focus on player/object, not simply parallel views
  • Proper eye “bulge” for realistic eye reflections
  • Simulated musculature provides outstanding emotions, speech and body language
  • Language independent speech, characters can naturally speak in many languages
  • Skeletal/bone system for animation
  • Layered animation system can synthesize complex animations out of several pieces
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About INFRA with 6 comments by assassini on Oct 24th, 2014

Hey guys! The game has come a long way since we first started working on it. We put together some comparisons to see just how much everything has changed over the years.

In case you were wondering about the post title, we also spent some time improving the foliage in INFRA. We turned on "alpha to coverage" for all foliage. This basically allows the leaves of trees and bushes to be anti-aliased. It's not really visible in the thumbnail, but be sure to click the image and marvel at its full glory.

We also made some changes so that the foliage sways in the wind now. It looks super amazing and really makes the levels come to life.

The flashlight also has volumetrics now. It basically looks like that it illuminates dust floating in the air. Adds a ton of atmosphere to dark levels.

It's really expensive to render at the moment, but we are hoping to optimize it so that it runs a bit better. If that doesn't work, we'll just leave it as an option for the "ultra" graphics level or something.

It has been a fruitful couple of weeks. Oh, and we're hoping to get a new gameplay video out in the near future, so stay tuned for that!

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Post comment Comments  (290 - 300 of 319)
mike_app
mike_app Feb 13 2009, 11:09pm says:

come on HL2 EP3 we cant wait any longer! Whens the black mesa TC being released too :P

+2 votes     reply to comment
NinjaDuck
NinjaDuck Dec 31 2008, 9:55am says:

Well, you can get SDK by doing this: Steam>View>Tools>Source SDK

+1 vote     reply to comment
kramersize
kramersize Nov 9 2008, 10:21pm says:

Source is the best, Lets develope some blue tooth tech or something so we can put on sensors on our bodies and be able to move in Gmod or maybe any source game, I am interested in making Gmod vids and think it would be fun to be able to pose and move the characteres with my own movement.

+2 votes     reply to comment
pfannkuchen_gesicht
pfannkuchen_gesicht Dec 3 2008, 12:15pm replied:

have you heard something about the WiiMod?

0 votes     reply to comment
Nokiaman
Nokiaman Jan 21 2009, 7:33am replied:

Wiimote is very sucky

+2 votes     reply to comment
zuriknet
zuriknet Sep 15 2008, 3:02pm says:

I can't say enough or too much. I LOVE the video. If a doctor could classify what is happening I wounder if it would be classified as a disease of the mind or a virus. I would have to say that either way the video is true.

I love Source, and can't wait to see what is in store next.

+1 vote     reply to comment
mokies
mokies Aug 7 2008, 4:41am says:

Anybody knows when will be the release of HL2:EP3?

It's kinda long I guess... it's the last of HL2. Then another story will come again...

+3 votes     reply to comment
jacko1121
jacko1121 Jul 17 2008, 3:36pm says:

Source is one of the better engines out there, to me even better then the unreal engine just because the amount of detail.

+3 votes     reply to comment
leilei
leilei Jul 25 2008, 6:43pm buried:

(buried)

any engine can be 'detailed' too if you had a texture artist with a camera and a sharpen filter.

-8 votes     reply to comment
Soviet529
Soviet529 Sep 25 2008, 7:20pm replied:

you obviously don't know much about making games.

+3 votes     reply to comment
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Platforms
Windows, PS3, X360, XBOX
Company
Valve
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Official Page
Valvesoftware.com
Licence
Commercial
Release Date
Released Oct 31, 2004
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Highest Rated (16 agree) 10/10

Even tho it is aging and it is beginning to show its weakness comparred to other more modern engines, it is still my most preferred engine and the only one I was able to get into succesfully. And with all of the updates Valve is giving it, I think the source engine will be with us for a long time. I wouldn't really recommend this for a commerical product, just because there are so many more modern engines out there that will be a lot easier in the long run (like UDK), but all of the commercial games…

Nov 16 2010, 3:48pm by Half_Kill

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