Let me know. It's just a guess at what might be the problem, but it does seem suspiciously like something that would crop up in the context of a DLL plugin on Windows.
On Mar 25, 2015, at 11:08 AM, haggi krey <[email protected]> wrote: > Great, I'll try it as soon as possible. > > haggi > > Am 25.03.2015 um 07:50 schrieb Larry Gritz: >> Haggi, try this: https://github.com/OpenImageIO/oiio/pull/1100 >> >> This is against master, but it should be straighforward to apply the same >> patch to RB-1.5. >> >> See if that clears things up (of course, modify your code to use destroy() >> rather than call delete directly). >> >> -- lg >> >> >> On Mar 24, 2015, at 11:22 PM, Larry Gritz <[email protected]> wrote: >> >>> I have an icky suspicion... I understand that in Windows, it's dangerous to >>> have memory allocated in one DLL but freed in another. So I'm worried about >>> that call to create (allocate in the OIIO DLL) and subsequent delete in the >>> Maya DLL. >>> >>> For ImageCache and TextureSystem, we have destroy() functions to go along >>> with create(), to ensure that the deletions happen in the right DLL's >>> memory arena. I don't see those for ImageInput/ImageOutput, but now I'm >>> thinking maybe they are needed. >>> >>> I'll prepare a patch for you to try, to see if this addresses the problem. >>> Stay tuned. >>> >>> >>> On Mar 24, 2015, at 1:38 PM, haggi krey <[email protected]> wrote: >>> >>>> Hi, >>>> >>>> I have a problem using OpenImageIO for writing exr files if I use it in a >>>> maya plugin on Windows. >>>> I used it to write the final results of my mayaToCorona renderer plugin >>>> what works fine unless I try to unload the plugin. >>>> Then maya freezes completly. >>>> >>>> Today I tried to use it to write a Arnold exr driver which enables the >>>> writing of AOV with mixed bit depths what Arnold does not yet support. >>>> Here an output driver is loaded during rendering and unloaded after >>>> rendering and exactly the same happens. I use it with mtoa on windows. >>>> As soon as Arnold tried to unload the driver after a rendering is done, >>>> maya freezes. >>>> >>>> Maybe anyone has some experience with this or has any idea what is >>>> happening here. I have tried the following: >>>> >>>> >>>> OIIO::ImageOutput *out = OIIO::ImageOutput::create(filename); >>>> delete out; >>>> >>>> The problem only appears if the filename is an exr file. With jpeg or >>>> tiff, everything works fine without any problems. >>>> So my idea was to check if the problem has something to do with openExr >>>> itself so I tried to write a simple file with Imf tools: >>>> >>>> void writeExrTest() >>>> { >>>> int width = 512; >>>> int height = 512; >>>> const char *fileName = "c:/daten/testimage.exr"; >>>> Rgba *pixels = new Rgba[512*512]; >>>> RgbaOutputFile file(fileName, width, height, WRITE_RGBA); >>>> file.setFrameBuffer (pixels, 1, width); >>>> file.writePixels (height); >>>> } >>>> >>>> And this worked fine - no blocking. >>>> I use openExr 2.2 together with OIIO 1.5. Compiled with Visual c++ 11 on >>>> Windows7. >>>> Tomorrow I'll try to export an ass file and check if the same happens with >>>> the standalone. >>>> And I did not try it in release mode yet. I'll check it tomorrow. >>>> >>>> I'd really appreciate any ideas. Of course I can implement it completly >>>> without OpenImageIO but I prefer to use it because it makes life easier. >>>> >>>> haggi >>>> >>>> _______________________________________________ >>>> Oiio-dev mailing list >>>> [email protected] >>>> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >>> -- >>> Larry Gritz >>> [email protected] >>> >>> >>> >>> _______________________________________________ >>> Oiio-dev mailing list >>> [email protected] >>> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> -- >> Larry Gritz >> [email protected] >> >> >> >> _______________________________________________ >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> >> > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org -- Larry Gritz [email protected] _______________________________________________ Oiio-dev mailing list [email protected] http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
