From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 103544] Graphical glitches r600 in game this war of mine linux native Date: Sat, 04 Nov 2017 14:34:13 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1998523867==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id BD1B86E17A for ; Sat, 4 Nov 2017 14:34:12 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1998523867== Content-Type: multipart/alternative; boundary="15098060521.f9BBA.19690"; charset="UTF-8" --15098060521.f9BBA.19690 Date: Sat, 4 Nov 2017 14:34:12 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D103544 --- Comment #8 from Ilia Mirkin --- (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 nouve= au. 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 separatel= y, same thing for color clamps (I believe NVIDIA hw maps NaN -> 0 unconditiona= lly for that case). --=20 You are receiving this mail because: You are the assignee for the bug.= --15098060521.f9BBA.19690 Date: Sat, 4 Nov 2017 14:34:12 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Commen= t # 8 on bug 10354= 4 from Ilia Mirkin 
(In reply to Roland Scheidegger from comment #7)
> I guess though the question is why other mesa dr=
ivers 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 nouve=
au.

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 unconditi=
onally
for that case).

You are receiving this mail because:
  • You are the assignee for the bug.
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