1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking Benchmarking Platform
Phoromatic Test Orchestration

Carmack's Reverse In Doom 3 Has Work-Around

Gaming

Published on 18 November 2011 06:40 AM EST
Written by Michael Larabel in Gaming
15 Comments

It looks like the patent issue with the open-source Doom 3 game won't severely delay the push of this code to the public. John Carmack has already worked around the legal issue within the id Tech 4 engine.

It was only three days ago that this patent issue came to light and was delaying the push of this open-source code, but yesterday Carmack announced he had a workaround in place for the legal issue surrounding Carmack's Reverse / the stencil buffer implementation of shadow volumes patented by Creative Labs.

The kicker? The workaround for this patent amounts to four lines of new code and two lines of changed code.

Yesterday Carmack had tweeted, "this demonstrates the idiocy of the patent -- the workaround added four lines of code and changed two."

Hopefully this workaround won't severely hamper the performance or reduce the image quality even more than what it's at now in the Mesa/Gallium3D drivers. See yesterday's benchmarks of Doom 3 on Mesa/Gallium3D to see how the game is performing and looking when using the open-source Intel, AMD/ATI, and NVIDIA Linux graphics drivers.

Should there not be any further issues with the Doom 3 / id Tech 4 code, hopefully it will be pushed soon.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux News
  1. NVIDIA/Nouveau PerfKit Implemented Over Gallium3D State Tracker
  2. AMD Catalyst 15.5 Beta Linux Driver Surfaces
  3. GCC's JIT Library Could Soon Be Around 5x Faster
  4. Chromium 44 Beta Brings Improved Notifications, ES6 Additions
  5. Steam Linux Usage Drops Lower... Below 0.9%
  6. Thunderbolt 3 To Offer 40 Gbps Transfers, USB Type-C Connector
  7. Qt 5.4.2 Officially Released
  8. Cinnamon 2.6 Yields Lower CPU Usage
  9. XDC2015 X.Org Conference Announced, CFP Issued
  10. Libinput 0.16 Now Supports Devices Like The Chromebook Pixel
Latest Articles & Reviews
  1. Benchmarking The Latest AMD & NVIDIA Graphics Cards On Ubuntu Linux
  2. Intel Compute Stick Performance Surprises Under Ubuntu Linux
  3. Linux 4.1 Brings Performance Boosts For Some Intel Low-Power Hardware
  4. Radeon OpenGL Benchmarks On Fedora 22
Most Viewed News This Week
  1. Friction Building Around An Ubuntu Community Council Decision
  2. Russia's Baikal Chips End Up Going For A MIPS CPU
  3. GNU Octave 4.0 Released, Includes A GUI & OpenGL
  4. For AMD Users, Linux 4.2 Will Bring The New AMDGPU Driver & VCE1 For Radeon
  5. Bye Bye Mandriva, She's Being Liquidated
  6. Confusion Mounts Over Wayland's Actual License
  7. Ubuntu Community Council Reaffirms Its Decision Against Kubuntu's Leader
  8. Mandriva Linux Was Allegedly Brought Down By Employee Lawsuits