[Bf-cycles] Cycles Standalone XML rendering errors

Brecht Van Lommel brechtvanlommel at pandora.be
Sat Jan 21 16:15:31 CET 2017

Hi Prayaag,

There is not enough information here to make a good guess about what
goes wrong. The pastebins don't show any Cycles output (maybe these
are OpenImageIO prints?). Running Cycles with --debug --background
should show something.

If Cycles works when executed directly and not when through the app,
there must be some difference that you can find. Parameters, input
files, environment variables, .. . And if those are all the same,
you'll need to look closer at the difference in debug output, where it
gets stuck, and perhaps use a debugger to step into the code.


On Sat, Jan 14, 2017 at 3:33 PM, Prayaag Kasundra
<prayaag at decorastudio.com> wrote:
> We are invoking cycles standalone .exe through a .Net Windows Forms
> Application.
> I have 4 XML (Generated from same scene from our application but with
> different camera angle , different light intensities values and different
> integrator node attrib values  )
> While first two xml works , when cycles.exe (invoked through .net app) tries
> to render 3rd and 4th xml, cycles.exe just doesn't do anything. No CPU
> utilization . I waited for 1 hour for 20 samples with 400x600 render size,
> still the cycles.exe process didn't complete. When I manually close the
> cycles.exe window , it returns the error output to .net app successfully
> though.  (The .net app invokes cycles with --background --quiet params)
> Now surprising thing is if I invoke cycles.exe manually with same 3rd and
> 4th xml  through command prompt (even with --background --quiet params ) ,
> it does finish and generates .jpg file successfully (although with  same
> console errors that appear in case of .net app)  .
> Following are errors/warning output of cycles.exe for each four xml files.
> First two runs successfully and generates jpg and last two just pauses
> cycles (remember, only when cycles is invoked from .net app. When run
> manually all four works despite of error output) .
> 1. https://hastebin.com/bilequkixu.pl
> 2. https://hastebin.com/momamikobe.pl
> 3. https://hastebin.com/okisedacuv.pl
> 4. https://hastebin.com/pusiwakuju.pl
> This is weird problem. Please throw some pointers. Thanks in advance.
> Thanks,
> Prayaag
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