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

Provider Object Support For RandR 1.5

X.Org

Published on 10 June 2012 07:00 AM EDT
Written by Michael Larabel in X.Org
4 Comments

The latest work by David Airlie for improving the X.Org infrastructure to handle modern GPU features (e.g. multi-GPUs, Optimus-like capabilities, etc) comes in the form of a proposed RandR protocol update.

Aside from David's DDX driver API re-work and other API/ABI breakage to the xorg-server, David's updating the Resize and Rotate extension to the X.Org Server. He's ultimately hoping to have DRI2 offload slaves and output slaves by this September with X.Org Server 1.13.

His proposed RandR update is to add the concept of "provider objects" to this popular X extension. As said by his mailing list message, "A provider object represents a GPU or virtual device that provides rendering or output services to the X server. This is the first rev of a protocol to enumerate providers devices, set their roles, and provide generic properties based on output properties for them."

This provider object work would form RandR 1.5. Here's some additional details about why you might be interested in provider objects with RandR 1.5:
1.5 Introduction to version 1.5 of the extension

Version 1.5 adds a new object called a provider object. A provider object represents a GPU or virtual device providing services to the X server. Providers have a set of abilities and a set of possible roles.

Provider objects are used to control multi-GPU systems. Provider roles can be dynamically configured to provide support for:

1) Output slaving: plug in a USB device, but have its output rendered using the main GPU. On some dual-GPU laptops, the second GPU isn't connected to the LVDS panel, so we need to use the first GPU as an output slave for the second GPU.

2) DRI2 offload - For dual-GPU laptops, allow DRI2 applications to be run on the second GPU and display on the first GPU.

3) GPU switching - Allow switching between two GPUs as the main screen renderer.

4) multiple GPU rendering - This replaces Xinerama.
At this time there's no other planned features to RandR 1.5.

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 Articles & Reviews
  1. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  2. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
  3. Linux Benchmarks Of NVIDIA's Early 2015 GeForce Line-Up
  4. NVIDIA GeForce GTX 960: A Great $200 GPU For Linux Gamers
  5. Disk Encryption Tests On Fedora 21
  6. Xonotic 0.8 Performance With The Open-Source AMD/NVIDIA Gallium3D Drivers
Latest Linux News
  1. Ubuntu's Mir Gains Server-Side Platform Probing
  2. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  3. LZHAM 1.0 Lossless Data Compression Codec Released
  4. LibreOffice 4.4 Is Coming Soon With New Features
  5. Linux Users Upset By Chromium's Busted HiDPI Support
  6. BPF Backend Merged Into LLVM To Make Use Of New Kernel Functionality
  7. Dying Light Is Headed To Linux, SteamOS
  8. Wayland 1.6.1 & Weston 1.6.1 Released
  9. Mesa 10.4.3 Brings A Bunch Of Fixes For The Direct3D "Nine" Support
  10. Intel Has A Few More Graphics Changes For The Linux 3.20 Kernel
Most Viewed News This Week
  1. Windows 10 To Be A Free Upgrade: What Linux Users Need To Know
  2. Google Admin Encourages Trying Btrfs, Not ZFS On Linux
  3. TraceFS: The Newest Linux File-System
  4. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  5. Mozilla's Servo Still On Track For 2015 Alpha Release
  6. Fedora 23 Likely To Pursue Wayland By Default
  7. Keith Packard Leaves Intel's Linux Graphics Work
  8. A Proposal To Go 64-bit Only With Fedora 23