<div dir="ltr">Simon, <div><br></div><div>Thanks for the report. I will follow up with other developers on this bug. </div><div><br></div><div>- Aashish</div><div><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 16, 2015 at 6:08 AM, Simon ESNEAULT <span dir="ltr"><<a href="mailto:simon.esneault@gmail.com" target="_blank">simon.esneault@gmail.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">Hello,<br><br>Trying to solve this problem, I found out that if one call "vtkFreeTypeTools::GetInstance()->DebugTexturesOn();" before to render a string with a vtkTextActor, the text is properly rendered with a yellow dot at the anchor point, and with a transparent gray background.<div><div>- DebugTexturesOn : <a href="http://picpaste.com/pics/Blurred.1447668943.PNG" target="_blank">http://picpaste.com/pics/Blurred.1447668943.PNG</a><br>- DebugTexturesOff : <a href="http://picpaste.com/pics/Not-Blurred.1447669009.PNG" target="_blank">http://picpaste.com/pics/Not-Blurred.1447669009.PNG</a><br><br>Now digging into the code in vtkFreeTypeTools.cxx, I suspect this is a blending problem. When we activate Texture Debugging, a gray background is first drawn, and after that in the method RenderCharacter( ... ) line 1887; we either blend the rendered text with the background or not.</div><div><br>Attached is a diff file that solves the problem for me. I do not really understand why, so maybe a developer with more VTK's knowledge can integrate this properly :)<br><br>Thanks,<br>Simon</div></div><div><br></div><div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">2015-11-13 16:43 GMT+01:00 Simon ESNEAULT <span dir="ltr"><<a href="mailto:simon.esneault@gmail.com" target="_blank">simon.esneault@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi All,<br><br>All vtkTextActor are rendered blurred when using with vtkFixedPointVolumeRayCastMapper in the same renderer in vtk 6.3 with the new rendering backend.<div><br></div><div>Here are some snapshots :<br> - <a href="http://picpaste.com/pics/OGL1-not-blurred.1447428990.png" target="_blank">OpenGL1</a></div><div> - <a href="http://picpaste.com/pics/OGL2-blurred.1447429027.png" target="_blank">OpenGL2</a><br><br>Attached some code that reproduces the problem, to be used with <a href="https://www.dropbox.com/s/ptqwi0ebv75kt35/volume.zip" target="_blank">this</a> volume. Visible on OSX and Windows to our knowledge, probably on more OS.<br><br>The text is rendered properly when used with the old backend or when using a vtkGPUVolumeRayCastMapper instead of the vtkFixedPointVolumeRayCastMapper.<br><br>Shall I feel a bug, is this a known issue ?<br><br>Thanks,<br>Simon<span><font color="#888888"><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><div>------------------------------------------------------------------<br>Simon Esneault<div>Rennes, France<br>------------------------------------------------------------------</div></div></div></div>
</font></span></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><div>------------------------------------------------------------------<br>Simon Esneault<div>Rennes, France<br>------------------------------------------------------------------</div></div></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><font face="trebuchet ms, sans-serif"><i>| Aashish Chaudhary <br>| Technical Leader <br>| Kitware Inc. <br></i></font><div><i><font face="trebuchet ms, sans-serif">| </font><a href="http://www.kitware.com/company/team/chaudhary.html" target="_blank">http://www.kitware.com/company/team/chaudhary.html</a></i></div></div></div>
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