[Nouveau] [Bug 99532] Compute shader doesn't give right result under some circumstances

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99532

--- Comment #17 from Ilia Mirkin <imirkin at alum.mit.edu> ---
A few observations:

- Pretty sure you want GL_TEXTURE_FETCH_BARRIER_BIT. Not that this matters for
nvc0.
- In addition to this always working on GM107, it *sometimes* works on my
GK208. Something about card state? Or something in compute insufficiently
initialized?
- I tried setting the DEPTH_TEXTURE bit in the TIC with no effect.
- The GM107 works just as effectively with both old- and new-style TIC formats.
- Throwing glFlush or glTextureBarrier into the mix made no difference, so it's
not a cache issue.
- Switching to DEPTH24 and DEPTH32F made no difference.

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