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id Software Doom 3 1.3.1302 Linux Performance

Michael Larabel

Published on 28 May 2005
Written by Michael Larabel
Page 1 of 4 - Comment On This Article

A few days ago, a new point release for Doom 3 was released along with an SDK (Software Development Kit) update. Among other things, there are some substantial improvements in the Linux update, mainly with PunkBuster, EAX support, the installer, and variety of other fixes. Overall, Timothee Besset (Doom 3 Linux port maintainer) has done a great job with this new patch, however, are there any performance benefits or losses from this latest patch? The id Software Doom 3 1.3.1302 patch performance is the focus of this article.

Fixes & Updates in 1.3:

· PunkBuster(TM) support has been added.
· EAX(R) ADVANCED HD(TM) support in the sound engine contributed by Creative Labs(R). Doom 3 base game comes with room reverb data.
· To utilize EAX(R) ADVANCED HD(TM) in Doom 3, you must have 100% EAX 4.0 compatible sound card. Please refer to your sound card manufacturer for details on whether or not your sound card supports EAX 4.0.
· Sound Blaster(R) Audigy(R) 2 users who wish to utilize the new EAX 4.0 feature in Doom 3 should download the latest Creative Beta Drivers for the card released on April 5th, 2005. Not using these drivers may result in game instability while using EAX 4.0.
· Server provides .pk4 file download URLs (http/ftp), client has internal download.
· New class of .pk4 files: 'addon paks' are only referenced when the map is loaded in.
· .pk4 downloads and addon paks come with a number of fixes to the 'pure server mode' filesystem code.
· Fixed ragdoll bounciness.
· Fixed how Doom 3 detects LAN client vs. Internet clients.
· LZW compression of render demos.
· Fixed command line parameter passing.
· Added a QuakeIII-style graph of the connection quality for network clients defaults off, enable with net_clientLagOMeter 1 displays a graph of how much the client predicts ahead of the server note that you can change the minimum predict ahead of a client by setting net_clientPrediction

Changes relevant to mod developers (SDK):

· Added UploadImage to idRenderSystem interface. This lets the user blit images to the renderer.
· Supports fs_game_base; this lets you base a mod off base game + d3xp + your own content.
· Most of the download redirection is handled in the game code, and can be extended.

Linux specific:

· ALSA device opened non-blocking to avoid hangs.

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