<div dir="ltr">Hi Clement,<br><br><br><div class="gmail_extra"><div class="gmail_quote">On 5 August 2015 at 17:06, <span dir="ltr"><<a href="mailto:Clement.Chu@csiro.au" target="_blank">Clement.Chu@csiro.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt"> Thanks for your help to test the problem. Please find the attachment of my test data. I tested with my laptop (Nvidia NVS 5200M with driver 353.62) and used osg 3.2.1 x64 windows version. The command is:<br>
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osgviewer t1.osg<br></div></div></blockquote><div><br></div><div>Thanks for the model.<br><br>I've run it on my Kubuntu system with Geforce GTX 760 + <span style="color:#000000;background-color:#ffffff">346.59 drives and get a hang on my system when I rotate the view. This happens with OSG svn/trunk (equivalent to OSG-3.4). When I run osgvolume t1.dds I get the hang as well. Given the nature of the hang and how it locks out the whole desktop it all points to GPU/driver issue of some kind.<br><br></span></div><div><span style="color:#000000;background-color:#ffffff">If I run:<br><br></span></div><div><span style="color:#000000;background-color:#ffffff"> osgvolume t1.dds --multi-pass <br><br></span></div><div><span style="color:#000000;background-color:#ffffff">I don't get any hang. The osgVolume::MultiPassTechnique is only part of OSG-3.4 so you won't have this option when using OSG3.2.1. By default osgvolume still defaults to the old RayTracedTechnique that you'll be familiar with, so I would suspect an issue with how the GPU is managing the RayTracedTechnique GLSL shaders.<br><br><br></span></div><div><span style="color:#000000;background-color:#ffffff">The thread that Julian Valentin linked discusses potentially the same issue, although the GLSL code Julian suggesting could be changed looks valid and the fix a workaround to otherwise valid code. I will do a review of the shaders to see I can spot a problem.<br><br></span></div><div><span style="color:#000000;background-color:#ffffff">Robert.<br></span></div><div><span style="color:#000000;background-color:#ffffff"><br></span><div><span style="font-family:monospace">
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