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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - glDispatchComputeGroupSizeARB : gl_GlobalInvocationID.x != gl_WorkGroupID.x * gl_LocalGroupSizeARB.x + gl_LocalInvocationID.x"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103393#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - glDispatchComputeGroupSizeARB : gl_GlobalInvocationID.x != gl_WorkGroupID.x * gl_LocalGroupSizeARB.x + gl_LocalInvocationID.x"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103393">bug 103393</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>OK, I see. The relevant shader is fill_cs_450.glsl. It puts stuff into the
array with values
(gl_GlobalInvocationID.x, t, gl_LocalInvocationID.x, t)
where t = gl_WorkGroupID.x * gl_LocalGroupSizeARB.x + gl_LocalInvocationID.x
Ideally the values printed should be (x, x, l, x) -- i.e. t ==
gl_GlobalInvocationID.x.
With nouveau this outputs a bunch of BS... sometimes gl_GlobalInvocationID.x ==
gl_LocalInvocationID.x, other times gl_GlobalInvocationID.x == randomish value.
I suspect this is a combination of a nouveau bug and a core bug [the latter of
which is affecting the radeonsi output]. Going to try to take a look.</pre>
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