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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Bad int(floatBitsToInt(vec4))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89508#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Bad int(floatBitsToInt(vec4))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89508">bug 89508</a>
from <span class="vcard"><a class="email" href="mailto:itoral@igalia.com" title="Iago Toral <itoral@igalia.com>"> <span class="fn">Iago Toral</span></a>
</span></b>
<pre>I found something interesting: the test expects addr0 to get values 0, 1, 2, 3,
then exit the loop in the 5th iteration, so I edited the code in the loop to
add this conditional for the assignment of temp[9]:
addr0 = int(floatBitsToInt(temps[10].xxxx));
if (addr0 >= 4)
temps[9] = vec4(1.0, 0, 0, 0);
else
temps[9] += temps[addr0];
Basically, I wanted to confirm that addr0 was being assigned a value that was
not expected (by forcing a red color as the output), but surprisingly, adding
this conditional makes the test pass!
Based on this, I think the problem here must be related with an optimization
pass that, for some reason, changes its behavior when the conditional is
present.</pre>
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