[Bf-cycles] CUDA error with Cycles_standalone

[Brecht Van Lommel]

It seems to be impossible at the moment, this code got lost in
refactoring. I think it could create the DisplayBuffer here
temporarily so that it can tonemap the image for file saving.

On Fri, Feb 21, 2014 at 10:57 PM, Zhanpeng Feng <jumpjump88 at hotmail.com> wrote:
> Hi Brecht,
>
> Thanks for looking into this. This is actually an error introduced by
> myself. I was trying to get familiar with cycles code by playing with it and
> I added these three lines to void Session::update_status_time(bool
> show_pause, bool show_done) function:
> tonemap();
> progress.set_status("Writing Image", params.output_path);
> display->write(device, params.output_path);
> which now I understand are not supposed to be there.
>
> I have one question though. I would like to be able to save the rendered
> image from cycles_standalone without invoking the GUI. However, the only
> function I can find for doing that is display->write(). I think display is a
> null object if cycles_standalone is run in background mode. So how do we
> save an image in background mode?
>
> Thanks a lot,
> Feng
>
>
>
>> From: brechtvanlommel at pandora.be
>> Date: Fri, 21 Feb 2014 15:42:04 +0100
>> To: bf-cycles at blender.org
>> Subject: Re: [Bf-cycles] CUDA error with Cycles_standalone
>
>>
>> Hi,
>>
>> I couldn't reproduce this problem on Mac OS X, I'm not sure what is
>> going on. Perhaps your graphics card doesn't support an OpenGL feature
>> that we use, but even then it's not clear to me why it would give this
>> error.
>>
>> Which graphics card(s) do you have?
>>
>> Brecht.
>>
>> On Wed, Feb 19, 2014 at 12:05 AM, Zhanpeng Feng <jumpjump88 at hotmail.com>
>> wrote:
>> > Hi,
>> >
>> > I was trying to use the cycles_standalone and and got the following
>> > error. I
>> > am wondering if anyone has seen similar issues?
>> > Error message:
>> > D:\blenderSVN_2\cmake-build\bin\Debug>cycles --device cuda --samples 10
>> > monkeyte
>> > st.xml --output this.bmp
>> > CUDA error: Invalid context in cuGraphicsMapResources(1,
>> > &pmem.cuPBOresource, 0)
>> >
>> >
>> > Refer to the Cycles GPU rendering documentation for possible solutions:
>> >
>> > http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/GPU_Rendering
>> >
>> > CUDA error: Not mapped in cuGraphicsResourceGetMappedPointer(&buffer,
>> > &bytes, pm
>> > em.cuPBOresource)
>> > CUDA error: Not mapped in cuGraphicsUnmapResources(1,
>> > &pmem.cuPBOresource,
>> > 0)
>> > CUDA error: Launch failed in cuCtxSynchronize()
>> >
>> > In the cycles standalone GUI I am able to see the rendering progresses
>> > and
>> > the scene is actually being rendered fine. No error occurs until
>> > tonemap()
>> > is called in the
>> > void Session::update_status_time(bool show_pause, bool show_done)
>> > function
>> > of session.cpp
>> > else if(show_done) {
>> > status = "Done";
>> > tonemap();
>> > progress.set_status("Writing Image", params.output_path);
>> > display->write(device, params.output_path);
>> > }
>> > If I run it using --device cpu everything works fine.
>> > Any help is appreciated.
>> >
>> > Thanks a lot,
>> > Feng
>> >
>> > _______________________________________________
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>> > Bf-cycles at blender.org
>> > http://lists.blender.org/mailman/listinfo/bf-cycles
>> >
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