Enlightenment's Evas Adds OpenGL ETC2 Support
Written by Michael Larabel in Desktop on 25 April 2014 at 11:26 AM EDT. 1 Comment
The Evas display canvas API to the Enlightenment project now has support for dealing with ETC2 texture compression.

Code landing today for EFL's Evas library provide support for dealing with ETC2 compression, after ETC1 texture format support was added to Evas earlier in the month.

ETC2 is the lossy texture compression scheme developed by Ericsson that is royalty-free and is now mandated as part of the OpenGL ES 3.0 and OpenGL 4.3 specifications. For those unfamiliar with this alternative to S3TC, read ETC2 Texture Compression Looks Good For OpenGL.

Support was added to the GL/X11 engine for Evas in situations where the OpenGL driver/hardware supports decoding of compressed ETC2 data. Notable commits today were adding direct copy support for ETC1/ETC2 data, ETC2 support for the GL/X11 engine, and support for ETC2 in the TGV loader.

With Intel's forthcoming Broadwell processors there is native ETC2 support on the desktop while existing GLES 3.0 / GL 4.3 drivers are using software-based ETC2 transcoding support.

Those wishing to learn more about Ericsson Texture Compression can see these PDF slides from a few years ago that go over ETC. Those slides also have comparisons of no compression against S3TC/DXTC, ETC1, and ETC2.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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