<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">2016-05-26 14:01 GMT+02:00 Elvis Stansvik <span dir="ltr"><<a href="mailto:elvis.stansvik@orexplore.com" target="_blank">elvis.stansvik@orexplore.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="">2016-05-26 13:46 GMT+02:00 Elvis Stansvik <span dir="ltr"><<a href="mailto:elvis.stansvik@orexplore.com" target="_blank">elvis.stansvik@orexplore.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div><div><div><div>Hi all,<br><br></div>When I view my volume from certain angles, there are glitches in the rendering when using vtkGPUVolumeRayCastMapper , see attached screenshots when the glitch is occurring and when it is not.<br><br></div>Has anyone seen this behavior and know what the problem might be? This is on Intel HD 4400 graphics.<br></div></div></div></div></blockquote><div><br></div></span><div>If it's not quite clear, the glitch is at the bottom of the first screenshot, where an are of the volume is not visible.<br></div></div></div></div></blockquote><div><br></div><div>An observation: I had the following to enable parallell projection in my code:<br><br> self.camera.ParallelProjectionOn()<br><br></div><div>If I remove this line, so that perspective projection is used instead, the glitches disappear.<br><br></div><div>This is not a solution, since I need to use parallell projection, but maybe it's a clue to the problem?<br><br></div><div>Elvis<br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div>From certain angles the volume disappears almost completely.<span class=""><font color="#888888"><br><br></font></span></div><span class=""><font color="#888888"><div>Elvis<br> <br></div></font></span><span class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div><div><br></div>I would love to be able to use the GPU volume mapper since it's so much faster than the software one.<br><br></div>Thanks,<br></div>Elvis<br></div>
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