id Tech 4, formerly known as the Doom 3 engine, is a computer game engine developed by id Software and first used in the PC game Doom 3. The engine was designed by John Carmack, who also created previous engines such as those for Doom and Quake, which are also generally recognized as marking significant advances in the field.
id Tech 4 began as an enhancement to id Tech 3. Originally it was planned to be a complete rewrite of the engine's rendere...
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id Tech 4, formerly known as the Doom 3 engine, is a computer game engine developed by id Software and first used in the PC game Doom 3. The engine was designed by John Carmack, who also created previous engines such as those for Doom and Quake, which are also generally recognized as marking significant advances in the field.
id Tech 4 began as an enhancement to id Tech 3. Originally it was planned to be a complete rewrite of the engine's renderer, while still retaining other subsystems, such as file access, and memory management. After the new renderer was functional, however, the decision was made to switch from C to the C++ programming language, necessitating a complete restructuring and rewrite of the rest of the engine; today, while id Tech 4 contains code from id Tech 3, much of it has had to be rewritten.
At the QuakeCon 2007, John Carmack, the lead graphics engine developer at id, said to LinuxGames: "I mean, I won't commit to a date, but the Doom 3 stuff will be open source."...
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