[Paraview-developers] [EXTERNAL] Re: Anti-aliasing of triangles
Ken Martin
ken.martin at kitware.com
Fri Oct 2 08:51:42 EDT 2015
Thanks Alan! I do hope to at least get this into VTK in the very near
future. - Ken
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
ken.martin at kitware.com
919 869-8871 (w)
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*From:* Scott, W Alan [mailto:wascott at sandia.gov]
*Sent:* Friday, September 25, 2015 2:51 PM
*To:* Aashish Chaudhary
*Cc:* Ken Martin; Moreland, Kenneth; Dave DeMarle; ParaView Developers
*Subject:* RE: [EXTERNAL] Re: [Paraview-developers] Anti-aliasing of
triangles
I wasn’t being totally clear, sorry. I was trying to say +1, and do we
have consensus. Thanks for the idea Ken!
I just wrote it up as a feature request in ParaView.
http://www.paraview.org/Bug/view_all_bug_page.php?filter=104567
Alan
*From:* Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com
<aashish.chaudhary at kitware.com>]
*Sent:* Friday, September 25, 2015 12:40 PM
*To:* Scott, W Alan
*Cc:* Ken Martin; Moreland, Kenneth; Dave DeMarle; ParaView Developers
*Subject:* Re: [EXTERNAL] Re: [Paraview-developers] Anti-aliasing of
triangles
On Fri, Sep 25, 2015 at 2:35 PM, Scott, W Alan <wascott at sandia.gov> wrote:
My user specifically asked for anti-aliasing making screenshots and
movies. At Kitware’s suggestion, he did write out his screenshot higher
resolution, then downsample. He said it looked really nice.
How about we add SSAA into the non-interactive rendering, which would also
give us better images in save screenshot and save animation? It probably
should be optional.
+1. I believe that's what Ken was suggesting which I liked as well.
Alan
*From:* Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com]
*Sent:* Friday, September 25, 2015 12:25 PM
*To:* Ken Martin
*Cc:* Moreland, Kenneth; Dave DeMarle; Scott, W Alan; ParaView Developers
*Subject:* [EXTERNAL] Re: [Paraview-developers] Anti-aliasing of triangles
Sure, SSAA costs a lot -:) but for non-interactive mode it might be okay.
The nice thing about SSAA is that it works everywhere.
Thanks for the clarification Ken.
Best,
Aashish
On Fri, Sep 25, 2015 at 2:12 PM, Ken Martin <ken.martin at kitware.com> wrote:
I was thinking SSAA , aka render into an FBO at sqrt(3)*width by
sqrt(3)*height for example and then down sample back to the window size,
for picking just bypass it. I have looked into FXAA, CMAA, but both those
approaches are typically faster, but have more complex implementations and
are subject to artifacts (CMAA is better on artifacts but the
implementation is more complex). A first step could be to use it for the
non-interactive renders in PV.
Ken
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
ken.martin at kitware.com
919 869-8871 (w)
This communication, including all attachments, contains confidential and
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received this communication in error please notify us immediately and
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*From:* Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com]
*Sent:* Friday, September 25, 2015 2:00 PM
*To:* Ken Martin
*Cc:* Moreland, Kenneth; Dave DeMarle; Scott, W Alan; ParaView Developers
*Subject:* Re: [Paraview-developers] Anti-aliasing of triangles
Ken,
I am assuming you are referring to screen space anti aliasing and not the
super sampled one (SSAA is typically referred for the super sampled one)?
if its the prior then +1. What particular paper / implementation you are
thinking?
- Aashish
On Fri, Sep 25, 2015 at 8:04 AM, Ken Martin <ken.martin at kitware.com> wrote:
I do want to add in a SSAA pass to VTK. From a code perspective it should
be fairly easy and then you should be able to have AA triangles safely etc.
Ken
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
ken.martin at kitware.com
919 869-8871 (w)
This communication, including all attachments, contains confidential and
legally privileged information, and it is intended only for the use of the
addressee. Access to this email by anyone else is unauthorized. If you are
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received this communication in error please notify us immediately and
destroy the original message. Thank you.
*From:* Paraview-developers [mailto:paraview-developers-bounces at paraview.org]
*On Behalf Of *Moreland, Kenneth
*Sent:* Thursday, September 24, 2015 3:08 PM
*To:* David E DeMarle; Scott, W Alan
*Cc:* paraview-developers at paraview.org
*Subject:* Re: [Paraview-developers] Anti-aliasing of triangles
FYI, it also messes up lots of other rendering modes (like depth peeling
and picking). We had enough trouble with it that we shut it off all the
time.
-Ken
*From: *Paraview-developers <paraview-developers-bounces at paraview.org> on
behalf of David E DeMarle <dave.demarle at kitware.com>
*Date: *Thursday, September 24, 2015 at 1:05 PM
*To: *Walter Scott <wascott at sandia.gov>
*Cc: *"paraview-developers at paraview.org" <paraview-developers at paraview.org>
*Subject: *[EXTERNAL] Re: [Paraview-developers] Anti-aliasing of triangles
Because it messes of parallel compositing.
A workaround is to render large images (4x wider and 4x taller) and then
resample them down in some image editor.
David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909
On Thu, Sep 24, 2015 at 3:02 PM, Scott, W Alan <wascott at sandia.gov> wrote:
I have a customer asking why we don’t antialias our triangles? You can see
this with the (very slightly) raged edge on the sources/sphere.
Thanks,
Alan
--------------------------------------------------------
W. Alan Scott
ParaView Support Manager
SAIC
Sandia National Laboratories, MS 0822
Org 9326 - Building 880 A1-C
(505) 284-0932 FAX (505) 284-5619
---------------------------------------------------------
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*| Aashish Chaudhary | Technical Leader | Kitware Inc. *
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*| Aashish Chaudhary | Technical Leader | Kitware Inc. *
*| http://www.kitware.com/company/team/chaudhary.html
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*| Aashish Chaudhary | Technical Leader | Kitware Inc. *
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