[vtkusers] Depth peeling not used, but I can't see why.
Daniel Lea
danlea at gmail.com
Tue Aug 17 17:10:39 EDT 2010
Well that's what I was concerned about. Setting it immediately after the
python call:
self._RenderWindow = vtk.vtkRenderWindow()
self._RenderWindow.SetAlphaBitPlanes(1)
It must be the python module that's the problem? I'll see what I can do.
On 17 August 2010 21:58, Clinton Stimpson <clinton at elemtech.com> wrote:
>
> On Aug 17, 2010, at 12:09 PM, Daniel Lea wrote:
>
> OK, now I've realised you can get some debug output with a standard build
> using the DebugOn() method in the right objects, I've determined that in my
> QVTKWidget, there are zero alpha bits, which is why depth peeling is not
> used (note that AlphaBitPlanes is definitely set). I'm trying to find out
> how to resolve this, but perhaps someone has already come across this
> problem and sorted it out?
>
>
> Is AlphaBitPlanes being set before the window is initialized?
> I tried it on an example using QVTKWidget, and it worked fine for me.
>
> Clint
>
>
> On 17 August 2010 15:32, Daniel Lea <danlea at gmail.com> wrote:
>
>> Please see below for details of the problem. Having run the depth peeling
>> test using a separate build of vtk (same version as my Ubuntu package:
>> 5.2.1), the result is a failure (seems the front panel isn't translucent)
>> but it does say that depth peeling was used. I'd rather not have to
>> configure a build for the application in order to debug vtk, so if anyone
>> has any ideas why depth peeling might not be used in the application, do get
>> in touch.
>>
>> Cheers,
>>
>> Dan.
>>
>>
>> On 16 August 2010 18:11, Francois Bertel <francois.bertel at kitware.com>wrote:
>>
>>> Hi Dan,
>>>
>>> The best way to ask a question is to post it on the vtkusers list. You
>>> will have a larger audience of people that can answer you:
>>>
>>> http://www.vtk.org/mailman/listinfo/vtkusers
>>>
>>> To answer your question: make sure you have VTKData and your VTK build
>>> directory points to VTKData, what is the result of:
>>> $ ctest -R TestTranslucentLUTDepthPeeling -V
>>>
>>> Does it say "Depth peeling was used", like here:
>>> http://www.cdash.org/CDash/testDetails.php?test=62870189&build=694461
>>>
>>>
>>> On Mon, Aug 16, 2010 at 12:57 PM, Dan Lea <danlea at gmail.com> wrote:
>>> > Hi François, I'm sure this isn't the best way to contact you directly,
>>> > but it's the only one I've found so far.
>>> >
>>> > I'm having trouble getting depth peeling to work on my linux system
>>> > (python vtk bindings in a Qt widget, dual nvidia quadro nvs 290, latest
>>> > nvidia drivers), despite what appears to be full suport for it. Can
>>> you
>>> > think of any reason that the renderer would not use depth peeling,
>>> > having set everything correctly according to your documentation, and
>>> > given that
>>> > vtk.vtkOpenGLExtensionManager.ExtensionSupported("GL_VERSION_2_0")
>>> > returns 1 (as well as GL_ARB_texture_rectangle), and
>>> > glGetIntegerv(0x0D55) ("GL_ALPHA_BITS") returns 8?
>>> >
>>> > Thanks in advance. Dan.
>>> >
>>> > Here are the details of the window and renderer after a render:
>>> >
>>> > vtkXOpenGLRenderWindow (0x7f7e088ae550)
>>> > Debug: Off
>>> > Modified Time: 223311
>>> > Reference Count: 1
>>> > Registered Events:
>>> > Registered Observers:
>>> > vtkObserver (0x3e958a0)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4039cd0
>>> > Priority: 0
>>> > Tag: 4
>>> > vtkObserver (0x4038d70)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x403cdb0
>>> > Priority: 0
>>> > Tag: 5
>>> > vtkObserver (0x3e884a0)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x403fde0
>>> > Priority: 0
>>> > Tag: 6
>>> > vtkObserver (0x403f740)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4042e90
>>> > Priority: 0
>>> > Tag: 7
>>> > vtkObserver (0x4042c90)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4045f50
>>> > Priority: 0
>>> > Tag: 8
>>> > vtkObserver (0x4045d50)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4047d80
>>> > Priority: 0
>>> > Tag: 9
>>> > vtkObserver (0x4c7ce40)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x404b130
>>> > Priority: 0
>>> > Tag: 10
>>> > vtkObserver (0x4c8c290)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x404e140
>>> > Priority: 0
>>> > Tag: 11
>>> > vtkObserver (0x4c97ae0)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4051150
>>> > Priority: 0
>>> > Tag: 12
>>> > vtkObserver (0x4ca60f0)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4054160
>>> > Priority: 0
>>> > Tag: 13
>>> > vtkObserver (0x4cb3160)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x4047520
>>> > Priority: 0
>>> > Tag: 14
>>> > vtkObserver (0x40483c0)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x3e817e0
>>> > Priority: 0
>>> > Tag: 15
>>> > vtkObserver (0x3f79810)
>>> > Event: 2
>>> > EventName: DeleteEvent
>>> > Command: 0x3e61f50
>>> > Priority: 0
>>> > Tag: 3
>>> > Erase: On
>>> > Window Name: Visualization Toolkit - OpenGL
>>> > Position: (0, 0)
>>> > Size: (1097, 747)
>>> > Mapped: 1
>>> > OffScreenRendering: 0
>>> > Double Buffered: 1
>>> > DPI: 120
>>> > TileScale: (1, 1)
>>> > TileViewport: (0, 0, 1, 1)
>>> > Borders: On
>>> > IsPicking: Off
>>> > Double Buffer: On
>>> > Full Screen: Off
>>> > Renderers:
>>> > Debug: Off
>>> > Modified Time: 6280
>>> > Reference Count: 1
>>> > Registered Events: (none)
>>> > Number Of Items: 1
>>> > Stereo Capable Window Requested: No
>>> > Stereo Render: Off
>>> > Point Smoothing: Off
>>> > Line Smoothing: Off
>>> > Polygon Smoothing: Off
>>> > Anti Aliased Frames: 0
>>> > Abort Render: 0
>>> > Current Cursor: 0
>>> > Desired Update Rate: 0.1
>>> > Focal Depth Frames: 0
>>> > In Abort Check: 0
>>> > NeverRendered: 0
>>> > Interactor: 0
>>> > Motion Blur Frames: 0
>>> > Swap Buffers: On
>>> > Stereo Type: RedBlue
>>> > Number of Layers: 1
>>> > AccumulationBuffer Size 0
>>> > AlphaBitPlanes: On
>>> > AnaglyphColorSaturation: 0.65
>>> > AnaglyphColorMask: 4 , 3
>>> > PainterDeviceAdapter:
>>> > Debug: Off
>>> > Modified Time: 5916
>>> > Reference Count: 1
>>> > Registered Events: (none)
>>> > MultiSamples: 0
>>> > StencilCapable: False
>>> > ReportGraphicErrors: Off
>>> > ContextId: 0x38f3f88
>>> > Color Map: 0
>>> > Display Id: 0x37d26a0
>>> > Next Window Id: 0
>>> > Window Id: 100664256
>>> >
>>> > vtkOpenGLRenderer (0x7f7e088af540)
>>> > Debug: Off
>>> > Modified Time: 223310
>>> > Reference Count: 2
>>> > Registered Events: (none)
>>> > Aspect: (1.46854, 1)
>>> > PixelAspect: (1, 1)
>>> > Background: (0, 0, 0)
>>> > Background2: (0.2, 0.2, 0.2)
>>> > GradientBackground: Off
>>> > Viewport: (0, 0, 1, 1)
>>> > Displaypoint: (0, 0, 0)
>>> > Viewpoint: (0, 0, 0)
>>> > Worldpoint: (0, 0, 0, 0)
>>> > Pick Position X1 Y1: -1 -1
>>> > Pick Position X2 Y2: -1 -1
>>> > IsPicking boolean: 0
>>> > Props:
>>> > Debug: Off
>>> > Modified Time: 226173
>>> > Reference Count: 1
>>> > Registered Events: (none)
>>> > Number Of Items: 13
>>> > PickResultProps:
>>> > NULL
>>> > Near Clipping Plane Tolerance: 0.001
>>> > Ambient: (1, 1, 1)
>>> > Backing Store: Off
>>> > Display Point: (0, 0, 0)
>>> > Lights:
>>> > Debug: Off
>>> > Modified Time: 25331
>>> > Reference Count: 1
>>> > Registered Events: (none)
>>> > Number Of Items: 1
>>> > Light Follow Camera: On
>>> > View Point: (0, 0, 0)
>>> > Two Sided Lighting: On
>>> > Automatic Light Creation: On
>>> > Layer = 0
>>> > Interactive = On
>>> > Allocated Render Time: 10
>>> > Last Time To Render (Seconds): 0.075882
>>> > TimeFactor: 131.784
>>> > Erase: On
>>> > Draw: On
>>> > UseDepthPeeling: On
>>> > OcclusionRation: 0.1
>>> > MaximumNumberOfPeels: 4
>>> > LastRenderingUsedDepthPeeling: Off
>>> > Number Of Lights Bound: 1
>>> > PickBuffer 0
>>> > PickedId0
>>> > NumPicked0
>>> > PickedZ 0
>>> > --
>>> > This message was sent from Launchpad by the user
>>> > Dan Lea (https://launchpad.net/~danlea)
>>> > using the "Contact this user" link on your profile page.
>>> > For more information see
>>> > https://help.launchpad.net/YourAccount/ContactingPeople
>>> >
>>>
>>>
>>>
>>> --
>>> François Bertel, PhD | Kitware Inc. Suite 204
>>> 1 (518) 371 3971 x113 | 28 Corporate Drive
>>> | Clifton Park NY 12065, USA
>>>
>>
>>
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