[Bf-committers] bpy.dll

Campbell Barton ideasman42 at gmail.com
Sat Mar 26 09:47:41 CET 2011 

Good to see its working for you, I updated the wiki to include DLL copying:
http://wiki.blender.org/index.php/User:Ideasman42/BlenderAsPyModule#Windows

This might have worked for me without copying DLL's because I have a
lot of options disabled.

Using the interface (window with 3d view, interactivity) isnt possible
and don't think it will be added since the UI has its own main loop
which would need to play nice with python.

Background mode in 2.5x is now quite well tested since its used for
durian renderfarm, utilities & ctest import/export, tests.

Recently I ported a UV unwrapping script from 2.4x to 2.5 without
opening blender as a test for blender as a module, it worked fine.

Would need more details on what you want to do to know if there is
some problems with blender running headless.

On Fri, Mar 25, 2011 at 6:10 PM, Paolo Basso <pa.basso at gmail.com> wrote:
> Is there a way/bpy function which allows to open Blender interface and get
> its reference?
>
> I'm happy now I can call bpy methods but I'd like to see what happens, is it
> possible?
>
> 2011/3/25 Paolo Basso <pa.basso at gmail.com>
>
>> ....needed .dlls:
>>
>> - gnu_gettext
>> - OpenAL32
>> - pthreadVC2
>> - SDL
>> - wrap_oal
>>
>> apparently not needed to (I just tried to import bpy, nothing else):
>> - iconv
>> - libpng
>> - zlib
>>
>>
>>
>> 2011/3/25 Paolo Basso <pa.basso at gmail.com>
>>
>>> Finally I fixed the problem:
>>>
>>> 1) Built with CMake and Visual C++ Express 2008 (MINGW seems not to work
>>> appropriately for Windows 7 and generates a bpy.pyd file which is not valid,
>>> see previous mail)
>>>
>>> 2) Copied bpy.pyd AND all the other generated dll (except for
>>> python32.dll) in the same folder (bin) to C.:\Python32\DLLs (or
>>> alternatively in C:\Python32\Lib\site-packages)
>>>
>>> Just copying bpy.pyd is not enough in my case but I neither tried to copy
>>> just some of the dlls... any suggestions concerning this point is
>>> appreciated.
>>>
>>> Cheers,
>>>
>>> P
>>>
>>>
>>>
>>>
>>>
>>>
>>> 2011/3/25 Paolo Basso <pa.basso at gmail.com>
>>>
>>>> In which version of Windows did you compile?
>>>>
>>>> May the problem be this one?
>>>> http://www.mingw.org/wiki/linking_hangs_under_windows_7
>>>> By the way, I got a 33 mb .pyd file.
>>>>
>>>> Cheers
>>>>   2011/3/25 Campbell Barton <ideasman42 at gmail.com>
>>>>
>>>>> >From the error message, python fails to load the DLL, it doesn't even
>>>>> get to look for a function inside it.
>>>>>
>>>>> Some misc suggestions if you want to look into this further.
>>>>>
>>>>> - My DLL was about 120mb (RelWithDebugInfo). When setting up cmake
>>>>> linking with add_library(...SHARED) function I managed to get a DLL
>>>>> that was ~600kb.
>>>>>  If your bpy.pyd is under 6mb something is wrong linking it and its
>>>>> - try build with CMAKE_BUILD_TYPE  set to RelWithDebugInfo
>>>>> - Find some tool to inspect the dll to get a hint as to why it fails,
>>>>> whats wrong with it.
>>>>> - could be a python ABI version conflict, I used the 32bit Python3.2
>>>>> MSI, built with blenders default python that comes in lib.
>>>>>
>>>>> Would be interesting to know if other systems have the same trouble.
>>>>>
>>>>> On Fri, Mar 25, 2011 at 12:16 AM, Paolo Basso <pa.basso at gmail.com>
>>>>> wrote:
>>>>> > no I was running Python 3.2, I just mentioned that I also hav Python
>>>>> 2.6
>>>>> > installed  just in case it could be of some help in understanding my
>>>>> > problem.
>>>>> >
>>>>> > I tried to build also the blender.exe from source but, again in this
>>>>> case,
>>>>> > everything seems to work fine except that at the end I get an error
>>>>> message
>>>>> > when I try to launch blender.
>>>>> >
>>>>> > I guess the problem could be something related to my minGW, can be?
>>>>> >
>>>>> >
>>>>> >
>>>>> > 2011/3/25 Daniel Tavares <danielmtavares at gmail.com>
>>>>> >
>>>>> >> Which of the Python runtimes were you running when you got the
>>>>> ImportError?
>>>>> >> It seems to me that you're trying to import bpy from Python 2.6. That
>>>>> will
>>>>> >> not work.
>>>>> >>
>>>>> >> Make sure to import bpy from your Python 3.2 runtime. As Campbell
>>>>> said:
>>>>> >>
>>>>> >> Execute...
>>>>> >> C:\Python32\python.exe
>>>>> >>
>>>>> >> >>> import bpy
>>>>> >> >>> print(bpy.data)
>>>>> >>
>>>>> >>
>>>>> >> Cheers,
>>>>> >>
>>>>> >> Daniel
>>>>> >>
>>>>> >>
>>>>> >> On Thu, Mar 24, 2011 at 8:20 AM, Paolo Basso <pa.basso at gmail.com>
>>>>> wrote:
>>>>> >>
>>>>> >> > My environment:
>>>>> >> >
>>>>> >> > Windows7 32 bit
>>>>> >> > python 2.6 and python 3.2 installed (C.\Pythonx.x\...)
>>>>> >> >
>>>>> >> > by the way, when I write the command "python" at the command
>>>>> prompt,
>>>>> >> > then python26 starts (not python32)
>>>>> >> >
>>>>> >> >
>>>>> >> > What I did:
>>>>> >> >
>>>>> >> > download latest build and windows dependencies with SVN and placed
>>>>> in
>>>>> >> > C.\BlenderSVN
>>>>> >> > (then I have two folders in C.\BlenderSVN: "blender" and "lib")
>>>>> >> >
>>>>> >> > I run Cmake 2.8.2 gui and set:
>>>>> >> >
>>>>> >> > - source code location: "C:/BlenderSVN/blender"
>>>>> >> > - where to build the binaries: "C:/BlenderSVN/build"
>>>>> >> >
>>>>> >> > then
>>>>> >> > 1) click configure once
>>>>> >> > 2) specify the generator for the project as "MinGW Makefiles" (Use
>>>>> >> default
>>>>> >> > native compilers)
>>>>> >> >
>>>>> >> > I get the following configure info:
>>>>> >> >
>>>>> >> > The C compiler identification is GNU
>>>>> >> >
>>>>> >> > The CXX compiler identification is GNU
>>>>> >> >
>>>>> >> > Check for working C compiler: C:/Program
>>>>> Files/pythonxy/mingw/bin/gcc.exe
>>>>> >> >
>>>>> >> > Check for working C compiler: C:/Program
>>>>> Files/pythonxy/mingw/bin/gcc.exe
>>>>> >> > --
>>>>> >> > works
>>>>> >> >
>>>>> >> > Detecting C compiler ABI info
>>>>> >> >
>>>>> >> > Detecting C compiler ABI info - done
>>>>> >> >
>>>>> >> > Check for working CXX compiler: C:/Program
>>>>> >> Files/pythonxy/mingw/bin/g++.exe
>>>>> >> >
>>>>> >> > Check for working CXX compiler: C:/Program
>>>>> >> Files/pythonxy/mingw/bin/g++.exe
>>>>> >> > -- works
>>>>> >> >
>>>>> >> > Detecting CXX compiler ABI info
>>>>> >> >
>>>>> >> > Detecting CXX compiler ABI info - done
>>>>> >> >
>>>>> >> > Performing Test SUPPORT_SSE_BUILD
>>>>> >> >
>>>>> >> > Performing Test SUPPORT_SSE_BUILD - Success
>>>>> >> >
>>>>> >> > SSE Support: detected.
>>>>> >> >
>>>>> >> > Performing Test SUPPORT_SSE2_BUILD
>>>>> >> >
>>>>> >> > Performing Test SUPPORT_SSE2_BUILD - Success
>>>>> >> >
>>>>> >> > SSE2 Support: detected.
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ALL
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ALL - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_CAST_ALIGN
>>>>> >> >
>>>>> >> > Performing Test C_WARN_CAST_ALIGN - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_DECLARATION_AFTER_STATEMENT
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_DECLARATION_AFTER_STATEMENT - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_IMPLICIT_FUNCTION_DECLARATION
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_IMPLICIT_FUNCTION_DECLARATION -
>>>>> Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_RETURN_TYPE
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_RETURN_TYPE - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_STRICT_PROTOTYPES
>>>>> >> >
>>>>> >> > Performing Test C_WARN_ERROR_STRICT_PROTOTYPES - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_NO_CHAR_SUBSCRIPTS
>>>>> >> >
>>>>> >> > Performing Test C_WARN_NO_CHAR_SUBSCRIPTS - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_NO_UNKNOWN_PRAGMAS
>>>>> >> >
>>>>> >> > Performing Test C_WARN_NO_UNKNOWN_PRAGMAS - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_POINTER_ARITH
>>>>> >> >
>>>>> >> > Performing Test C_WARN_POINTER_ARITH - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_UNUSED_PARAMETER
>>>>> >> >
>>>>> >> > Performing Test C_WARN_UNUSED_PARAMETER - Success
>>>>> >> >
>>>>> >> > Performing Test C_WARN_WRITE_STRINGS
>>>>> >> >
>>>>> >> > Performing Test C_WARN_WRITE_STRINGS - Success
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_ALL
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_ALL - Success
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_NO_INVALID_OFFSETOF
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_NO_INVALID_OFFSETOF - Success
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_NO_SIGN_COMPARE
>>>>> >> >
>>>>> >> > Performing Test CXX_WARN_NO_SIGN_COMPARE - Success
>>>>> >> >
>>>>> >> > Blender Skipping: (bf_collada;bf_imbuf_openexr;extern_redcode)
>>>>> >> >
>>>>> >> > Could NOT find Subversion (missing: Subversion_SVN_EXECUTABLE)
>>>>> >> >
>>>>> >> > Configuring done
>>>>> >> >
>>>>> >> > 3) tick the box WITH_PYTHON_MODULE and unselect the box
>>>>> >> WITH_PYTHON_INSTALL
>>>>> >> > (WITH_PLAYER is already unselected)
>>>>> >> >
>>>>> >> > 4) click for the second time configure
>>>>> >> >
>>>>> >> > This time I get these messages:
>>>>> >> >
>>>>> >> > Blender Skipping: (bf_collada;bf_imbuf_openexr;extern_redcode)
>>>>> >> >
>>>>> >> > Could NOT find Subversion (missing: Subversion_SVN_EXECUTABLE)
>>>>> >> >
>>>>> >> > Configuring done
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > 5) click generate
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > At this point I close Cmake gui, open the windows shell and run the
>>>>> >> > following commands:
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > cd C:\BlenderSVN\build
>>>>> >> >
>>>>> >> > mingw32-make
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > (the compilation ends like:
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > [100%] Building C object
>>>>> >> > source/creator/CMakeFiles/blender.dir/buildinfo.c.obj
>>>>> >> > Linking CXX shared library ..\..\bin\bpy.pyd
>>>>> >> > Creating library file: ..\..\lib\libbpy.dll.a
>>>>> >> > Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" '
>>>>> >> > unrecognized
>>>>> >> > Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" '
>>>>> >> > unrecognized
>>>>> >> > Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" '
>>>>> >> > unrecognized
>>>>> >> > Warning: .drectve `/DEFAULTLIB:"LIBCMT" /DEFAULTLIB:"OLDNAMES" '
>>>>> >> > unrecognized
>>>>> >> > [100%] Built target blender
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > )
>>>>> >> >
>>>>> >> >
>>>>> >> > mingw32-make *install*
>>>>> >> >
>>>>> >> > **
>>>>> >> >
>>>>> >> > After the installation, still in the shell I write the following
>>>>> >> commands:
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > copy bin\bpy.pyd C:\Python32\Lib\site-packages\
>>>>> >> > xcopy /E bin\2.56 C:\Python32\
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > (last command actually copies only the sub-folders of the 2.56
>>>>> folder so
>>>>> >> > that I have three different folders - config, datafiles, scripts -
>>>>> in
>>>>> >> > C:\Python32   -----> however I tried also copying the whole 2.56
>>>>> >> folder..)
>>>>> >> >
>>>>> >> >
>>>>> >> > ....and still get the same error message:
>>>>> >> >
>>>>> >> > ImportError: DLL load failed: %1 non è un'applicazione di Win32
>>>>> valida.
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> >
>>>>> >> > 2011/3/24 Campbell Barton <ideasman42 at gmail.com>
>>>>> >> >
>>>>> >> > > tested again and it works ok for me with mingw/cmake.
>>>>> >> > >
>>>>> >> > > You should have...
>>>>> >> > > * C:\Python32\2.56\scripts
>>>>> >> > > * C:\Python32\Lib\site-packages\bpy.pyd
>>>>> >> > >
>>>>> >> > > Execute...
>>>>> >> > > C:\Python32\python.exe
>>>>> >> > >
>>>>> >> > > ... try import bpy,
>>>>> >> > > print(bpy.data)
>>>>> >> > >
>>>>> >> > > Important its version 3.2 and that ./2.56/ is in the subdirectory
>>>>> of
>>>>> >> > > python.exe.
>>>>> >> > >
>>>>> >> > > On Thu, Mar 24, 2011 at 9:27 AM, Paolo Basso <pa.basso at gmail.com
>>>>> >
>>>>> >> wrote:
>>>>> >> > > > Something wrong still happens...
>>>>> >> > > >
>>>>> >> > > > I compile the source using cmake and MinGW and everything seems
>>>>> to
>>>>> >> work
>>>>> >> > > in
>>>>> >> > > > the right way. I get the bpy.pyd file and successfully copy it
>>>>> >> together
>>>>> >> > > with
>>>>> >> > > > the other folders in the python32 directory (as explained in
>>>>> the wiki
>>>>> >> > > page).
>>>>> >> > > > However when I run the python 32 interpreter and try to import
>>>>> the
>>>>> >> bpy
>>>>> >> > > > module I get the same error message as before (ImportError: DLL
>>>>> load
>>>>> >> > > failed:
>>>>> >> > > > %1 is not a Win32 valid application).
>>>>> >> > > >
>>>>> >> > > > I tried to compile the source also with visual studio 10 but,
>>>>> among
>>>>> >> the
>>>>> >> > > > others, I got the following error message:
>>>>> >> > > >
>>>>> >> > > > C:\temp_blender\bin\Debug\bpy.pyd : fatal error LNK1169: one or
>>>>> more
>>>>> >> > > symbols
>>>>> >> > > > defined more then once
>>>>> >> > > >
>>>>> >> > > >
>>>>> >> > > > Am I doing something wrong??
>>>>> >> > > >
>>>>> >> > > > Cheers,
>>>>> >> > > >
>>>>> >> > > > P
>>>>> >> > > >
>>>>> >> > > >
>>>>> >> > > > 2011/3/24 Campbell Barton <ideasman42 at gmail.com>
>>>>> >> > > >
>>>>> >> > > >> Added support for windows r35735
>>>>> >> > > >>
>>>>> >> > > >> Updated wiki.
>>>>> >> > > >>
>>>>> http://wiki.blender.org/index.php/User:Ideasman42/BlenderAsPyModule
>>>>> >> > > >>
>>>>> >> > > >> On windows the function needed exporting, defining
>>>>> Py_ENABLE_SHARED
>>>>> >> > does
>>>>> >> > > >> this.
>>>>> >> > > >>
>>>>> >> > > >> On Wed, Mar 23, 2011 at 6:45 PM, Paolo Basso <
>>>>> pa.basso at gmail.com>
>>>>> >> > > wrote:
>>>>> >> > > >> > I tried also this way but I get the following error message
>>>>> >> > > (translated
>>>>> >> > > >> from
>>>>> >> > > >> > italian):
>>>>> >> > > >> >
>>>>> >> > > >> > ImportError: DLL load failed: %1 is not a Win32 valid
>>>>> application.
>>>>> >> > > >> >
>>>>> >> > > >> > It is possible that the dll has to be compiled with the same
>>>>> >> > compiler
>>>>> >> > > as
>>>>> >> > > >> > python (visual studio)?
>>>>> >> > > >> > I compiled using mgwin.
>>>>> >> > > >> >
>>>>> >> > > >> > http://docs.python.org/py3k/extending/windows.html
>>>>> >> > > >> > 4.3. Using DLLs in Practice
>>>>> >> > > >> >
>>>>> >> > > >> > Thanks,
>>>>> >> > > >> >
>>>>> >> > > >> > P
>>>>> >> > > >> >
>>>>> >> > > >> > 2011/3/23 Mitchell Stokes <mogurijin at gmail.com>
>>>>> >> > > >> >
>>>>> >> > > >> >> On Windows, C Extension modules for Python have the
>>>>> extension
>>>>> >> .pyd
>>>>> >> > > >> >> instead. So, try renaming the module from bpy.dll to
>>>>> bpy.pyd.
>>>>> >> > > >> >>
>>>>> >> > > >> >> Cheers,
>>>>> >> > > >> >> Mitchell
>>>>> >> > > >> >> _______________________________________________
>>>>> >> > > >> >> Bf-committers mailing list
>>>>> >> > > >> >> Bf-committers at blender.org
>>>>> >> > > >> >> http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> > > >> >>
>>>>> >> > > >> > _______________________________________________
>>>>> >> > > >> > Bf-committers mailing list
>>>>> >> > > >> > Bf-committers at blender.org
>>>>> >> > > >> > http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> > > >> >
>>>>> >> > > >>
>>>>> >> > > >>
>>>>> >> > > >>
>>>>> >> > > >> --
>>>>> >> > > >> - Campbell
>>>>> >> > > >> _______________________________________________
>>>>> >> > > >> Bf-committers mailing list
>>>>> >> > > >> Bf-committers at blender.org
>>>>> >> > > >> http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> > > >>
>>>>> >> > > > _______________________________________________
>>>>> >> > > > Bf-committers mailing list
>>>>> >> > > > Bf-committers at blender.org
>>>>> >> > > > http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> > > >
>>>>> >> > >
>>>>> >> > >
>>>>> >> > >
>>>>> >> > > --
>>>>> >> > > - Campbell
>>>>> >> > > _______________________________________________
>>>>> >> > > Bf-committers mailing list
>>>>> >> > > Bf-committers at blender.org
>>>>> >> > > http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> > >
>>>>> >> > _______________________________________________
>>>>> >> > Bf-committers mailing list
>>>>> >> > Bf-committers at blender.org
>>>>> >> > http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >> >
>>>>> >> _______________________________________________
>>>>> >> Bf-committers mailing list
>>>>> >> Bf-committers at blender.org
>>>>> >> http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >>
>>>>> > _______________________________________________
>>>>> > Bf-committers mailing list
>>>>> > Bf-committers at blender.org
>>>>> > http://lists.blender.org/mailman/listinfo/bf-committers
>>>>> >
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> - Campbell
>>>>> _______________________________________________
>>>>> Bf-committers mailing list
>>>>> Bf-committers at blender.org
>>>>> http://lists.blender.org/mailman/listinfo/bf-committers
>>>>>
>>>>
>>>>
>>>
>>
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-- 
- Campbell

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