[Paraview] pvpython WriteImage output corrupted

[Taylor, Erin M.]

I have tried setting the view.UseOffscreenRendringForScreenshots to 0 with
no luck.  Still the same corrupted image output.

And I am making a series of images in a loop also.  I am updating the same
view, however, not deleting and recreating a new one.  I wonder if that
would work.

Also, in the last few days I've built paraview from source with OSMesa
support and tried using offscreen rendering, but that results in a seg
fault at Render().  I must not have it set up properly.  I followed the
instructions for build with OSMesa support, and it compiled and built
successfully, but haven't had luck getting the script to run with
offscreen rendering yet.

Erin




On 4/15/13 9:19 AM, "Masquelet, Matthieu (GE Global Research)"
<masquelet at ge.com> wrote:

>That does not seem to help. On the other hand, I've personally had
>success by adding a pause (time.sleep(0.5)) in my loop after each
>Delete(view). Does that help you pinpoint the issue? Note that I use
>on-screen rendering regardless as I cannot build paraview with OpenMesa
>on my system at this point.
>
>Thanks in advance,
>
>Matthieu
>
>-----Original Message-----
>From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
>Sent: Friday, April 12, 2013 6:38 PM
>To: Masquelet, Matthieu (GE Global Research)
>Cc: Taylor, Erin M.; ParaView
>Subject: Re: [Paraview] pvpython WriteImage output corrupted
>
>I wonder if has something to do with the offscreen rendering. Try the
>following before Writeimage():
>
>view.UseOffscreenRenderingForScreenshots = 0
>
>Does that help?
>
>Utkarsh
>
>
>On Thu, Apr 11, 2013 at 2:37 PM, Masquelet, Matthieu (GE Global
>Research) <masquelet at ge.com> wrote:
>> I have experienced similar issues to a lesser level. Say if I'm looping
>>over 20 files to generate snapshots for a movie, sometimes, 1 or 2 of
>>these will be corrupted in a fashion similar to what is reported here.
>>Also using 3.98.1 on Linux 64-bit, writing png files.
>>
>> Hope this helps,
>>
>> Matthieu
>>
>> -----Original Message-----
>> From: paraview-bounces at paraview.org
>>[mailto:paraview-bounces at paraview.org] On Behalf Of Taylor, Erin M.
>> Sent: Thursday, April 11, 2013 11:11 AM
>> To: Taylor, Erin M.; ParaView
>> Subject: Re: [Paraview] pvpython WriteImage output corrupted
>>
>> I should also add that I can output images from the ParaView GUI in the
>>linux machine with no problems.  It's just pvpython WriteImage output
>>that is corrupted.
>>
>>
>>
>> On 4/11/13 11:08 AM, "Taylor, Erin M." <Erin.Taylor at jhuapl.edu> wrote:
>>
>>>Hi all,
>>>
>>>I have a pvpython script that I've been developing and running
>>>successfully on Mac OSX 10.6.8.  It renders a csv data set as points,
>>>then
>>>saves an image to file.    It basically boils down to this:
>>>
>>>cr = CSVReader()
>>>cr.FileName = filename
>>>cr.UpdatePipeline()
>>>tp = TableToPoints(cr)
>>>tp.XColumn = 'x'
>>>tp.YColumn = 'y'
>>>tp.ZColumn = 'z'
>>>tp.UpdatePipeline()
>>>
>>>Render()
>>>view = GetRenderView()
>>>WriteImage(image_path, view, Magnification = 2)
>>>
>>>
>>>This works on the mac using pvpython.  However when I try to run the
>>>same script on a 64 bit linux machine (same version of paraview,
>>>3.98.1), the image that is output from WriteImage is corrupted.  By
>>>that I mean the image is a mess of black and white noise.  Sometimes
>>>the images have a portion of the script output rendered correctly in a
>>>tile of the image.  I should note that the image is rendered properly
>>>in the view window on this linux machine, it is just the saved output
>>>that is corrupted.  I have tried .png and .jpg image output with the
>>>same result.
>>>
>>>I appreciate any ideas anyone might have on the cause of this!
>>>
>>>Many thanks,
>>>
>>>Erin
>>>
>>>
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