[Bug 103544] Graphical glitches r600 in game this war of mine linux native

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103544

--- Comment #15 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Roland Scheidegger from comment #14)
> - the driver doesn't use the ieee variants consistently (e.g. muls from
> lerps).
> There's also some inconsistencies - for r600, the comments say for non-gl
> usage the ieee variant should be used for rcp, however eg/cayman will use
> that anyway, and I don't think handling it differently between these drivers
> is done on purpose.

Actually that seems to be the problem - on r600, rcp/rsq_clamped are used (btw
does someone know why rsq has its own code expansion on r600, but not
eg/cayman)?
But eg/cayman use rcp/rsq_ieee. It looks like if I use rcp_clamped instead that
is enough to fix everything (regardless what rsq/min/max are using).

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