[Mesa-dev] [PATCH 00/27] intel: Add ETC2 compressed textures support

Philipp Klaus Krause pkk at spth.de
Fri Oct 19 23:32:55 PDT 2012

On 20.10.2012 01:28, Anuj Phogat wrote:
> This series lives on my etc2-v9 branch (https://github.com/aphogat/mesa).
> This series enables 8 out of 10 ETC2 texture formats for all Intel
> hardware by simply decoding the ETC2 data into RGBX data at the time
> of glCompressedTexImage2D. These patches can be tested using piglit
> test case i have added for etc2 textures. Patches for the test are under
> review on piglit mailing list.
> I'll soon post the patches for remaining 2 etc2 formats as well.

What's the purpose of this? Applications typically want a trade-off
between graphics memory and bandwidth usage and quality, i.e. they offer
a low-quality setting for users with slower hardware that uses texture
compression and a higher quality setting for users with high-end
hardware that can use uncompressed textures.
Your patch gives them the worst of both: The quality of compressed
textures at the memory and bandwidth usage of uncompressed textures.


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