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

Sub-Surfaces Support Added To Wayland Protocol

Wayland

Published on 16 November 2013 01:25 PM EST
Written by Michael Larabel in Wayland
10 Comments

After the support has been within Wayland's Weston reference compositor for several months, developers have now added sub-surfaces support to the Wayland core protocol itself. Wayland sub-surfaces can make for efficient use of video players and windowed OpenGL games on Wayland.

Sub-surfaces in Weston has been mainline since May and now all the kinks should be worked out in its design so it was determined ready to move to the core Wayland protocol itself rather than just being a Weston addition. Sub-surfaces are surfaces tied to a parent Wayland surface (wl_surface) and ultimately then these surfaces combined form the actual window.

Pekka Paalanen explained in the Git commit adding sub-surfaces to Wayland, "The representative use case for sub-surfaces is a video player window. When the video content is given its own wl_surface, there is no need to modify the video frame contents after decoding or copy them into a whole window sized buffer before submitting it to the compositor. This allows efficient, zero-copy video presentation paths, where video decoding hardware produces a (YUV) buffer, which eventually ends up in a (YUV-capable) hardware overlay and is scanned out directly. This can also be used for zero-copy presentation of windowed OpenGL content, where the OpenGL rendering engine does not need to draw or avoid window decorations. Sub-surfaces allow mixing different buffer types into the same window, e.g. software-rendered decorations in wl_shm buffers, and live content in EGL-based buffers."

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. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  2. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  3. AMD Radeon R9 285 Tonga Performance On Linux
  4. Apotop Wi-Copy
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. Features GNOME Developers Want In The Linux Kernel
  2. GTK+ Gains Experimental Overlay Scrollbars
  3. Phoronix Test Suite 5.4 M3 Is Another Hearty Update
  4. GParted 0.20 Improves Btrfs Support
  5. EXT4 In Linux 3.18 Has Clean-ups, Bug Fixes
  6. Emacs 24.4 Has Built-In Web Browser, Improved Multi-Monitor Support
  7. NVIDIA's NVPTX Support For GCC Is Close To Being Merged
  8. KDE's KWin On Wayland Begins Using Libinput
  9. Khronos Releases OpenVX 1.0 Specification
  10. Linux Kernel Working Towards GNU11/C11 Compatibility
Latest Forum Discussions
  1. HOPE: The Ease Of Python With The Speed Of C++
  2. Users/Developers Threatening Fork Of Debian GNU/Linux
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Bye bye BSD, Hello Linux: A Sys Admin's Story
  5. NVIDIA Presents Its Driver Plans To Support Mir/Wayland & KMS On Linux
  6. AMD Is Restructuring Again, Losing 7% Of Employees
  7. Open-Source AMD Fusion E-350 Support Takes A Dive
  8. Upgrade to Kaveri, very slow VDPAU performance