<div dir="ltr">Yeah, I guess it's also worth adding a test for ray jittering since there is none yet.</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 14, 2016 at 10:39 AM, Aashish Chaudhary <span dir="ltr"><<a href="mailto:aashish.chaudhary@kitware.com" target="_blank">aashish.chaudhary@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Based on the video its hard to say if it is the wood grain I am seeing or something else is going on. Can you send a high-res static picture?<div><br></div><div>@Alvaro, it would be good to look at the jittering code carefully as well. </div><span class="HOEnZb"><font color="#888888"><div><br></div><div>- Aashish</div></font></span></div><div class="HOEnZb"><div class="h5"><br><div class="gmail_quote"><div dir="ltr">On Fri, Oct 14, 2016 at 9:54 AM Alvaro Sanchez <<a href="mailto:alvaro.sanchez@kitware.com" target="_blank">alvaro.sanchez@kitware.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="m_-3283671716880167750gmail_msg">Hi Elvis,<div class="m_-3283671716880167750gmail_msg"><br class="m_-3283671716880167750gmail_msg"></div><div class="m_-3283671716880167750gmail_msg">the mapper uses a vtkPerlinNoise instance to generate the jitter noise and as far as I know there are currently no knobs exposed to tweak the amount of ray perturbation.  Are you using the GL2 backend?  It would also be good to know what features are active along with ray jittering (multiple components, etc.), so if you could provide some sample data or code would be very helpful.</div><div class="m_-3283671716880167750gmail_msg"><br class="m_-3283671716880167750gmail_msg"></div><div class="m_-3283671716880167750gmail_msg">Thanks!</div><div class="m_-3283671716880167750gmail_msg">Alvaro</div></div><div class="gmail_extra m_-3283671716880167750gmail_msg"></div><div class="gmail_extra m_-3283671716880167750gmail_msg"><br class="m_-3283671716880167750gmail_msg"><div class="gmail_quote m_-3283671716880167750gmail_msg">On Fri, Oct 14, 2016 at 3:47 AM, Elvis Stansvik <span dir="ltr" class="m_-3283671716880167750gmail_msg"><<a href="mailto:elvis.stansvik@orexplore.com" class="m_-3283671716880167750gmail_msg" target="_blank">elvis.stansvik@orexplore.com</a>></span> wrote:<br class="m_-3283671716880167750gmail_msg"><blockquote class="gmail_quote m_-3283671716880167750gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
I updated our product to use VTK 7.1.0.rc1, as I was interested in<br class="m_-3283671716880167750gmail_msg">
trying out vtkGPUVolumeRayCastMapper::<wbr>UseJitteringOn() to get rid of<br class="m_-3283671716880167750gmail_msg">
some woodgrain effects we're suffering from in our volume rendering<br class="m_-3283671716880167750gmail_msg">
(mostly when the volumes are rendered very opaque).<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
But turning the option on seems to have little to no effect. This is<br class="m_-3283671716880167750gmail_msg">
the result with the option on:<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
    <a href="https://dl.dropboxusercontent.com/u/22350696/out.ogv" rel="noreferrer" class="m_-3283671716880167750gmail_msg" target="_blank">https://dl.dropboxusercontent.<wbr>com/u/22350696/out.ogv</a><br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
It looks about the same to me as it does with the option off.<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
Are there any knobs for this option? How does it determine how much to<br class="m_-3283671716880167750gmail_msg">
perturbate the rays?<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
Thanks for any advise.<br class="m_-3283671716880167750gmail_msg">
<br class="m_-3283671716880167750gmail_msg">
Elvis<br class="m_-3283671716880167750gmail_msg">
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</blockquote></div><br class="m_-3283671716880167750gmail_msg"><br clear="all" class="m_-3283671716880167750gmail_msg"><div class="m_-3283671716880167750gmail_msg"><br class="m_-3283671716880167750gmail_msg"></div></div><div class="gmail_extra m_-3283671716880167750gmail_msg">-- <br class="m_-3283671716880167750gmail_msg"><div class="m_-3283671716880167750m_8909909649344924527gmail_signature m_-3283671716880167750gmail_msg" data-smartmail="gmail_signature"><div dir="ltr" class="m_-3283671716880167750gmail_msg"><div class="m_-3283671716880167750gmail_msg"><div dir="ltr" class="m_-3283671716880167750gmail_msg"><div class="m_-3283671716880167750gmail_msg">Alvaro Sanchez</div><div class="m_-3283671716880167750gmail_msg">Kitware, Inc.</div><div class="m_-3283671716880167750gmail_msg"><span style="color:rgb(0,0,0);font-family:Arial;font-size:14.6667px;line-height:20.24px;white-space:pre-wrap" class="m_-3283671716880167750gmail_msg">Senior </span>R&D Engineer</div><div class="m_-3283671716880167750gmail_msg">21 Corporate Drive</div><div class="m_-3283671716880167750gmail_msg">Clifton Park, NY 12065-8662</div><div class="m_-3283671716880167750gmail_msg">Phone: <a href="tel:(518)%20881-4901" value="+15188814901" class="m_-3283671716880167750gmail_msg" target="_blank">518-881-4901</a></div></div></div></div></div>
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</blockquote></div>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Alvaro Sanchez</div><div>Kitware, Inc.</div><div><span style="color:rgb(0,0,0);font-family:Arial;font-size:14.6667px;line-height:20.24px;white-space:pre-wrap">Senior </span>R&D Engineer</div><div>21 Corporate Drive</div><div>Clifton Park, NY 12065-8662</div><div>Phone: 518-881-4901</div></div></div></div></div>
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