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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Validation of KHR_blend_equation_advanced stricter than NVidia"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105161#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Validation of KHR_blend_equation_advanced stricter than NVidia"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105161">bug 105161</a>
from <span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span></b>
<pre>Specifically, the ext spec says,
"""
A draw-time error will be generated in the OpenGL API if an application
attempts to render using an advanced blending equation without having a
matching layout qualifier specified in the active fragment shader.
"""
So pretty sure mesa is in the right here, and NVIDIA is buggy. (And as an
aside, the mesa implementation relies on the options being supplied properly,
since code is inserted conditionally into the shader. I'm guessing NVIDIA just
has a global library and doesn't care.)</pre>
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