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

Radeon X1000 GPUs (R500) On Linux Finally Get HyperZ

Intel

Published on 03 December 2012 01:15 PM EST
Written by Michael Larabel in Intel
6 Comments

Shortly after improving the HyperZ support in R300g, Marek Olšák has now enabled HyperZ support by default for ATI R500 (Radeon X1000 series) GPUs.

The R300/R400 GPUs don't yet have HyperZ support enabled by default until sufficient testing has been completed, but the HyperZ support can be toggled via the RADEON_HYPERZ environment variable. The newer Radeon GPUs with the R600g Gallium3D driver also don't yet have usable HyperZ support enabled 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.

In the Git commit enabling this feature, Marek describes the support as:
- Only one process can use it at a time. This is a hardware limitation.
- The first process to clear a zbuffer gets the exclusive access to use Hyper-Z.
- Compositors don't use any zbuffer, so they won't steal it, but some web browsers do, so make sure there's no web browser running if you want your game to use Hyper-Z.
- There's no need to restart an app which couldn't get the access to Hyper-Z. Just quit the app which took it, the driver can turn it on for the other app in the middle of rendering.
- If an app gets the access to Hyper-Z, it prints "radeon: Acquired Hyper-Z" to stdout.
I did some HyperZ benchmarks months ago, but new R300g performance tests will now be coming up.

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. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  2. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
  3. Linux 3.18 File-System Performance Minimally Changed But Possible Regressions
  4. AMD Radeon Gallium3D Is Catching Up & Sometimes Beating Catalyst On Linux
Latest Linux News
  1. More File-System Tests Of The Linux 3.18 Kernel
  2. Using NVIDIA's NVENC On Linux With FFmpeg
  3. There's Talk Again About An "Open To The Core" Ubuntu Laptop
  4. PowerVR SGX Driver Code Gets Leaked
  5. V2 Of KDBUS Published For Linux Kernel Review
  6. VirtualBox 4.3.20 Arrives, Still No Sign Of VirtualBox 4.4
  7. Scientific Linux 6.6 vs. Scientific Linux 7.0 Benchmarks
  8. Qualcomm Looks To Get Into The ARM Server Business
  9. HHVM 3.4 Adds New Features, Support
  10. More Radeon Driver Changes Queued For Linux 3.19
Latest Forum Discussions
  1. Roadmap to Catalyst 14.10 ?
  2. Cant get working Kaveri APU - A10-7850k
  3. Debian Developer Resigns From The Systemd Maintainership Team
  4. Script for Fan Speed Control
  5. Debian Init System Coupling Vote Results
  6. The Slides Announcing The New "AMDGPU" Kernel Driver
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support