Intel Merges ETC2 Texture Compression In Mesa
Written by Michael Larabel in Intel on 7 December 2012 at 09:22 PM EST. 3 Comments
ETC2, the new royalty-free texture compression method that's required by OpenGL ES 3.0, now has support within mainline Mesa. However, for now this ETC2 support is limited to the Intel DRI driver.

ETC2 is very interesting for OpenGL and is in a much better legal state than S3TC. With OpenGL ES 3.0 from this summer, ETC2 is now mandated and so it's adoption should begin to take off. With Intel wanting OpenGL ES 3.0 in Mesa by early 2013, ETC2 support had to come sooner rather than later.

Intel has been working on ETC2 Mesa patches for several weeks but only today the support was merged to mainline Mesa. Ian Romanick committed the patches enabling ETC2, but for now it's only supported with Intel graphics hardware.

From the commit:
This patch enables support for ETC2 compressed textures on all intel hardware. At present, ETC2 texture decoding is not available on intel hardware. So, compressed ETC2 texture data is decoded in software and stored in a suitable uncompressed MESA_FORMAT at the time of glCompressedTexImage2D. Currently, ETC2 formats are only exposed in OpenGL ES 3.0.
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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 Twitter or contacted via MichaelLarabel.com.

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