[Bug 81843] [SNB IVB HSW] ETC2 textures are not returned as compressed images

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81843

--- Comment #1 from Eleni Maria Stea <estea at igalia.com> ---
There has been some workaround related to this issue:

There is a patch proposal awaiting review at:
https://patchwork.freedesktop.org/series/38872/

that can be tested quickly with this test program:
https://github.com/hikiko/test-compression

With the patch, Gen7 GPUs that cannot compress ETC2 images, store both the
compressed and the non-compressed data of the ETC2 images in two different
miptrees. Then, the non-compressed data are used for the rendering like before
and the compressed data for the GetCompressed* functions to work properly.

see also: https://bugs.freedesktop.org/show_bug.cgi?id=104272

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