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

R300 Gallium3D HyperZ Is Finally In Good Shape

AMD

Published on 02 December 2012 05:23 PM EST
Written by Michael Larabel in AMD
12 Comments

Marek Olšák has fixed up the HyperZ support within the R300 Gallium3D driver so that it's working properly for more applications. R300 HyperZ is finally in a state where he may be looking to enable the feature by default.

HyperZ is the ATI/AMD technology that's been around going back to the R100 GPU days for boosting the GPU performance and efficiency. HyperZ consists of Z compression for minimizing the Z-Buffer bandwidth, fast Z clear, and a hierarchical Z-Buffer. Benchmarks of HyperZ show that it can certainly improve the OpenGL frame-rate for gaming, but within the open-source Radeon Linux drivers the HyperZ support has been buggy for new and old hardware.

The R300 Gallium3D driver that supports up through the Radeon X1000 (R500) series has had fairly stable and reliable HyperZ support for quite some time, except for a few caveats. With the newer R600 Gallium3D driver, the support is much worse off. HyperZ has defeated open-source developers due to bugs in the command stream and other issues.

With a R300g commit made this morning by Marek, clearing the Z-Buffer cache before clearing the ZMASK or HIZ fixes wrong rendering in Lightsmark as well as one of the Piglit test-cases. Marek notes in the commit message, "I think I fixed Hyper-Z. So far every app seems to work like a charm."

In a bug post, Marek then wrote, "I reverted the commit and I also fixed the bug with Lightsmark. So far everything seems to work. Maybe it's time to enable HyperZ by default?"

Hopefully we will see R300g flipped on soon, which will benefit owners of old ATI Radeon hardware with seeing increased OpenGL performance on the Linux desktop.

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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. Counter-Strike: Global Offensive NVIDIA/AMD Benchmarks On Linux
  2. Running Fedora 20 On Intel's Core i7 Haswell-E Platform
  3. A Tour Of The New Phoronix Office
  4. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
Latest Linux News
  1. The Features Coming For Fedora 21
  2. Counter-Strike: Global Offensive Starts Rolling Out To Linux Users
  3. The Gestures Support Of GNOME 3.14
  4. Linux 3.17 Has Basic Support For The Xbox One Controller
  5. openSUSE 13.2 Beta Still Using Btrfs By Default, & KDE Plasma 5 For Testing
  6. GTK+ 3.14 Brings Much Better Wayland Support, Multi-Touch, New Theme
  7. DisplayPort Comes To USB's Type-C Connector
  8. NSS Updated On Ubuntu 12.04/14.04 To Allow Netflix Support
  9. Linux 3.17-rc6 Released; Linux 3.17 Final Might Come In One Week
  10. X.Org Server 1.16.1 Released
Latest Forum Discussions
  1. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  2. Uselessd: A Stripped Down Version Of Systemd
  3. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  4. State of Nouveau now and in the near future?
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. NVIDIA GTX 770/780 -works ?
  7. New stress testing utility for GPU's
  8. How to get Catalyst 14.4 working on Ubuntu 14.04