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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> I’m still playing with making my transparent objects look good. It was suggested that I look at the depth peeling versus vtkdepthsortpolydata (since the depth sort isn’t all that fast). Of course, I read that the depth
peeling isn’t fast, either.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> From the documentation, I have implemented (where the actor is a set ofspheres)<o:p></o:p></p>
<p class="MsoNormal">-------<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderWindow</span>-><span style="color:#010001">SetAlphaBitPlanes</span>(1);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderWindow</span>-><span style="color:#010001">SetMultiSamples</span>(0);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderer</span>-><span style="color:#010001">GetActorRenderer</span>()-><span style="color:#010001">UseDepthPeelingOn</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderer</span>-><span style="color:#010001">GetActorRenderer</span>()-><span style="color:#010001">SetMaximumNumberOfPeels</span>(100);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderer</span>-><span style="color:#010001">GetActorRenderer</span>()-><span style="color:#010001">SetOcclusionRatio</span>(0.1);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkPolyDataMapper</span>>
<span style="color:#010001">mapper</span> = <span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkPolyDataMapper</span>>::<span style="color:#010001">New</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">mapper</span>-><span style="color:#010001">SetInputConnection</span>(<span style="color:#010001">appendData</span>-><span style="color:#010001">GetOutputPort</span>());<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkActor</span>>
<span style="color:#010001">actor</span> = <span style="color:#010001">vtkSmartPointer</span><<span style="color:#010001">vtkActor</span>>::<span style="color:#010001">New</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">actor</span>-><span style="color:#010001">SetMapper</span>(<span style="color:#010001">mapper</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">actor</span>-><span style="color:#010001">GetProperty</span>()-><span style="color:#010001">SetOpacity</span>(0.5);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">actor</span>-><span style="color:#010001">GetProperty</span>()-><span style="color:#010001">SetColor</span>(1, 0, 0);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">actor</span>-><span style="color:#010001">RotateX</span>(-72);
<span style="color:green">//put the object in a position where it is easy<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">m_pRenderer</span>-><span style="color:#010001">AddActor</span>(<span style="color:#010001">actor</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in;text-autospace:none">
<span style="font-size:10.0pt;font-family:"Courier New";color:blue">int</span><span style="font-size:10.0pt;font-family:"Courier New"">
<span style="color:#010001">depthPeelingWasUsed</span> = <span style="color:#010001">
m_pRenderer</span>-><span style="color:#010001">GetActorRenderer</span>()-><span style="color:#010001">GetLastRenderingUsedDepthPeeling</span>();<o:p></o:p></span></p>
<p class="MsoNormal">-------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> The depthPeelingWasUsed always returns false (0). From the documentation, it says that, for depth peeling, you really need OpenGL > 1.3. I’m using the amd radeon 7900.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Doug<o:p></o:p></p>
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