[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 #8 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Roland Scheidegger from comment #7)
> I guess though the question is why other mesa drivers render it correctly
> and how they avoid the NaNs if they also use ieee conformant behavior (if
> they actually render it correctly...).

If you can get me a trace, I can have a look to see what happens with nouveau.

There's additional implications from having NaN's in RT outputs, i.e. what
happens in blending functions. I believe that nouveau configures the GPU for
the "zero wins" style of multiplication in the blending unit. And separately,
same thing for color clamps (I believe NVIDIA hw maps NaN -> 0 unconditionally
for that case).

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20171104/593f4e44/attachment.html>