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<body><span class="vcard"><a class="email" href="mailto:danylo.piliaiev@gmail.com" title="Danylo <danylo.piliaiev@gmail.com>"> <span class="fn">Danylo</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - The big SKQP bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105301">bug 105301</a>
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<td>danylo.piliaiev@gmail.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - The big SKQP bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105301#c22">Comment # 22</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - The big SKQP bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105301">bug 105301</a>
from <span class="vcard"><a class="email" href="mailto:danylo.piliaiev@gmail.com" title="Danylo <danylo.piliaiev@gmail.com>"> <span class="fn">Danylo</span></a>
</span></b>
<pre>Hello Kenneth, I feel I have something to add:
<span class="quote">> Note that the SKQP test is broken. It's enabled dual source blend factors
> (SRC1_COLOR etc.) but provided a shader that only writes one color output, when
> it ought to write two colors. For reference, the one that is hanging is the
> fragment shader with the 'discard', which only outputs a single color</span >
I have reported this hang some time ago in GL and in Vulkan:
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GEN8+] Hang when discarding a fragment if dual source blending is enabled but shader doesn't support it"
href="show_bug.cgi?id=107088">https://bugs.freedesktop.org/show_bug.cgi?id=107088</a>
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GEN8+] Hang when discarding a fragment if dual source blending is enabled but shader doesn't support it"
href="show_bug.cgi?id=107306">https://bugs.freedesktop.org/show_bug.cgi?id=107306</a>
(It looks like the case you are describing)
And made two patches respectively:
<a href="https://patchwork.freedesktop.org/series/45779/">https://patchwork.freedesktop.org/series/45779/</a>
<a href="https://patchwork.freedesktop.org/series/46931/">https://patchwork.freedesktop.org/series/46931/</a>
Hope this would help</pre>
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