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<body><span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Distorted output in obs-studio where other vendors "work""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79783">bug 79783</a>
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<td>idr@freedesktop.org
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Distorted output in obs-studio where other vendors "work""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79783#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Distorted output in obs-studio where other vendors "work""
href="https://bugs.freedesktop.org/show_bug.cgi?id=79783">bug 79783</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>apitrace dump-images shows that misrendering happens on the very first draw
call (#55762 in the trace). The misrendering looks like a texture coordinate
problem: the correct image (in the upper right quadrant) is upside-down, and
the edge pixels are extended infinitely (due to GL_CLAMP_TO_EDGE).
INTEL_DEBUG=vs shows that the vertex shader outputs are being qualified as
"flat", even though the "flat" keyword never appears in the shader source code.
I believe this is a bug in our separate shader objects (SSO) implementation.
I've observed that link_varyings.cpp:809 is kicking in, marking outputs as flat
because they aren't "being consumed by the fragment shader". Indeed,
consumer_var is NULL in all cases.
CC'ing Ian.</pre>
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