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<p class="MsoNormal">Looking to implement a proper depth sort for semi-transparent objects. My research has shown that the vtkDepthSortPolyData is not sufficient as it is CPU bound.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve enabled depth peeling and it’s worked great using Core i7 4770K (4600HD Integrated Graphics). However, it was slower than we liked and thus I tested an Nvidia Quadro 3000M and Quadro 2000. Both don’t properly enable depth peeling as
confirmed with a GetRenderLastUsedDepthPeeling() call.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note: Using pyVTK (vtk 5.10.1) on Windows 7 64bit with latest gpu Quadro drivers (9.18.13.4062)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In my small test application I can get DepthPeeling to render properly on the Quadro 2000 by setting
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">renderWindow.SetAlphaBitPlanes(1)<o:p></o:p></p>
<p class="MsoNormal">renderWindow.SetMultiSamples(0)<o:p></o:p></p>
<p class="MsoNormal">renderer.SetUseDepthPeeling(1)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, If I remove SetAlphaBitPlanes() and SetMultiSamples() depth peeling doesn’t work properly and is not enabled.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any indication as to why depth peeling works fine on the Core i7 integrated graphics compared to a true GPU?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Grant<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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