[Paraview-developers] [EXTERNAL] Re: Anti-aliasing of triangles

Fri Oct 23 08:20:29 EDT 2015

FYI - I committed the SSAA pass to VTK a few days ago. On my laptop with
VTK it seems to work really well except lines and points do get thinner.
That could be fixed by scaling up the line/point thickness in all the
mappers when using SSAA but I'll leave that to a separate topic.

Thanks
Ken

On Fri, Oct 2, 2015 at 8:51 AM, Ken Martin <ken.martin at kitware.com> wrote:

> 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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>
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> This communication, including all attachments, contains confidential and
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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
> 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
> not the intended recipient, any disclosure, copying, distribution or any
> action taken in reliance on it is prohibited and may be unlawful. If you
> received this communication in error please notify us immediately and
> destroy the original message.  Thank you.
>
>
>
> *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
> not the intended recipient, any disclosure, copying, distribution or any
> action taken in reliance on it is prohibited and may be unlawful. If you
> 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.            *
>
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>
>
>
>
>
> --
>
>
>
> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
>
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>
>
>
>
>
> --
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>
>
> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
>
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>

-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

This communication, including all attachments, contains confidential and
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action taken in reliance on it is prohibited and may be unlawful. If you
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