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.org

X Input 2.3 Patches Bring Pointer Barrier Events

X.Org

Published on 07 December 2012 09:43 AM EST
Written by Michael Larabel in X.Org
Comment On This Article

Peter Hutterer has published his patches for X Input 2.3, the next version of the X.Org Input extension that's likely to be merged into X.Org Server 1.14. The notable addition to X Input 2.3 is Pointer Barrier Events.

Pointer Barrier Events of Xi 2.3 make it where if a pointer hits one of these defined barriers, events are sent to selected clients. Via Barrier Release Requests, a client can "release" the pointer so that it can pass through the barrier with the next movement. The use-cases for Pointer Barrier Events is hot-corners/edges that respond to pushing against them (stemming from GNOME 3.x developer requests) and ad-hoc transparent barriers so depending upon the pointer speed the user can move the barrier (a request by Ubuntu's Unity developers).

Current issues with this work come down to grab behavior being different for other events, loss of Predictable Pointer Acceleration across a barrier, device-specific release isn't yet implemented, and a passive grab test is currently failing.

Aside from touching the X.Org Server, updating to X Input 2.3 also requires changes to inputproto, libXi, and the xorg-integration-tests.

Hutterer ends his mailing list post with "I think this is a valuable addition to 1.14, unless someone can find significant issues with the protocol as it is proposed here. Should we merge this for 1.14, I do reserve the right to disable this feature in the server before the release, unless we have a credible client-side implementation. We've learned the lesson with smooth scrolling that a server-implementation only is not good enough."

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 Hardware Reviews
  1. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
  2. MSI: Update Your BIOS From The Linux Desktop
  3. NVIDIA vs. AMD 2D Linux Drivers: Catalyst Is Getting Quite Good At 2D
  4. 15-Way GPU Comparison With Mesa 10.3 + Linux 3.17
Latest Linux News
  1. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  2. Imagination Releases Full ISA Documentation For PowerVR Rogue GPUs
  3. Features GNOME Developers Want In The Linux Kernel
  4. GTK+ Gains Experimental Overlay Scrollbars
  5. Phoronix Test Suite 5.4 M3 Is Another Hearty Update
  6. GParted 0.20 Improves Btrfs Support
  7. EXT4 In Linux 3.18 Has Clean-ups, Bug Fixes
  8. Emacs 24.4 Has Built-In Web Browser, Improved Multi-Monitor Support
  9. NVIDIA's NVPTX Support For GCC Is Close To Being Merged
  10. KDE's KWin On Wayland Begins Using Libinput
Latest Forum Discussions
  1. Users/Developers Threatening Fork Of Debian GNU/Linux
  2. HOPE: The Ease Of Python With The Speed Of C++
  3. Proof that strlcpy is un-needed
  4. Bye bye BSD, Hello Linux: A Sys Admin's Story
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. NVIDIA Presents Its Driver Plans To Support Mir/Wayland & KMS On Linux
  7. AMD Is Restructuring Again, Losing 7% Of Employees
  8. Open-Source AMD Fusion E-350 Support Takes A Dive