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Nouveau DRM Commits Supporting Z Compression

Nouveau

Published on 19 October 2012 06:02 PM EDT
Written by Michael Larabel in Nouveau
3 Comments

Ben Skeggs of Red Hat pushed a number of new DRM commits into the Nouveau driver development repository today, including new support for Z compression.

With the commits that landed hours ago in the Nouveau DRM repository, Z compression is now enabled for NV30 and NV40 class NVIDIA graphics processors.

NV20 class hardware already had Z compression support since 2010 but now NV30 and NV40 class hardware has enabled Z compression support. Z compression is the compressing the Z-buffer image depth coordinates to reduce bandwidth on Z reads and writes. Z compression is one of the parts on the AMD side referred to as HyperZ. Both NVIDIA and AMD hardware has supported Z compression hardware for quite some time.

The NV30 class hardware is the GeForce 5/FX series while the NV40 class hardware is the GeForce 6 and GeForce 7 series. The Z compression support may lead to performance improvements for this hardware, but we will have to wait until new Phoronix benchmarks are conducted.

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 .
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