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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB IVB HSW] ETC2 textures are not returned as compressed images"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81843#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB IVB HSW] ETC2 textures are not returned as compressed images"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81843">bug 81843</a>
from <span class="vcard"><a class="email" href="mailto:estea@igalia.com" title="Eleni Maria Stea <estea@igalia.com>"> <span class="fn">Eleni Maria Stea</span></a>
</span></b>
<pre>There has been some workaround related to this issue:
There is a patch proposal awaiting review at:
<a href="https://patchwork.freedesktop.org/series/38872/">https://patchwork.freedesktop.org/series/38872/</a>
that can be tested quickly with this test program:
<a href="https://github.com/hikiko/test-compression">https://github.com/hikiko/test-compression</a>
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: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [OpenGL CTS] [HSW] KHR-GL46.direct_state_access.textures_compressed_subimage assert fails"
href="show_bug.cgi?id=104272">https://bugs.freedesktop.org/show_bug.cgi?id=104272</a></pre>
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