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id Tech is the family of game engines designed and developed by id Software. Prior to the presentation of the id Tech 5-based game Rage, the engines lacked official designation and as such were referred to as the Quake engines, from the name of the main game series the engines have been developed for. id Tech numbers 1, 2 and 3 have been released as free software under the GNU General Public License.

Contents

id Tech 1

Previously known as the Doom engine, is the game engine that powers the id Software games Doom and Doom II. It was created by John Carmack, with auxiliary functions written by Mike Abrash, John Romero, Dave Taylor and Paul Radek. Originally developed on NeXT computers, it was ported to DOS for Doom's initial release and was later ported to several game consoles and operating systems.

Commercial titles that use this engine

id Tech 2

Quake family tree, showing games and engines based on id Tech 2

Previously known as the "Quake II engine". id Tech 2 is based on the Quake 1 engine, and features some enhancements such as colored lighting and a new model format. Game code is now written in C and loaded from a DLL, in place of the original Quake engine's "QuakeC" scripting language.[citation needed]

Commercial titles that use this engine

id Tech 3

Previously known as the "Quake III Engine", it was derived from id Tech 2, although a large portion of code is new or re-written[citation needed]

Commercial titles that use this engine

id Tech 3 with Ritual’s ÜberTools

id Tech 4

Formerly the "Doom 3 engine", originally based on id Tech 3. It has a C++ based engine framework, and a new renderer, AI framework, physics engine, gameplay trigger system, and sound framework.[citation needed]

This engine based titles:

id Tech 5

This is the engine being used for id software's new games.

The engine is not based on any previous id Tech engines, however it reuses much of the technology from the most updated id Tech 4 engine, including MegaTexture technology, parallax mapping, bloom, motion blur, soft particles, soft shadows and pixel shader effects.[citation needed]

id Tech 6

id Tech 6 is an OpenGL based upcoming game engine under preliminary development by id Software, which will tentatively follow id Tech 5 for id Software games following Rage, and Doom 4. It will work by raycasting the geometry represented by voxels (instead of triangles) stored in an octree.

See also

References

  1. ^ id Software. "Technology Licensing". http://www.idsoftware.com/business/idtech4/. Retrieved 2008-04-06. 







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