[vbox-dev] OpenGL/3D on Mac Hosts... Screenshots

[Louis King Jr]

yes, thank you Mikhail. I have been "stuck" using the host's screenshot
workaround for three years. :) The only issue with that is if you aren't
running in full screen, which I don't do anymore since I have a 27" screen
now, you have to go in and crop things. I hope "one day" comes soon ;)


On Fri, May 31, 2013 at 7:33 AM, mikhail sennikovsky <
mikhail.sennikovsky at oracle.com> wrote:

>  Hi Louis,
>
> Due to the way VBox 3D support is implemented currently, taking screenshot
> inside guest may not work,
> actually it should work only if guest is using standard 3D/OpenGL API for
> screenshot acquisition.
> VBox 3D support gets enhanced constantly, so this should be surely fixed
> one day I'd say.
> For now you can use host's "take screenshot" functionality as a workaround.
>
> Mikhail
>
> On 31.05.2013 15:06, Louis King Jr wrote:
>
> I wanted to restate in case it was missed, Debian 7 running Gnome 3 is the
> first and only Linux guest where screenshots work with 3D enabled.
>
>
>  On Fri, May 31, 2013 at 6:06 AM, Louis King Jr <inlieuoflou at gmail.com>wrote:
>
>> Yes, it's always been a 3D problem. 3D has always been problematic with
>> the Mac version of VirtualBox. The screenshot problem for 3D has been going
>> on for something like 3 years. 2D screenshots are fine.
>>
>> I figured the errors weren't too meaningful but I thought I should
>> include them.
>>
>>
>> On Fri, May 31, 2013 at 5:58 AM, Sergey Dubov <Sergey.Dubov at oracle.com>wrote:
>>
>>> Louis King Jr <inlieuoflou at gmail.com> писал(а) в своём письме Fri, 31
>>> May 2013 01:00:17 +0400:
>>>
>>>  the build is VirtualBox-4.2.51-86105
>>>
>>>
>>> On Thu, May 30, 2013 at 4:56 PM, Louis King Jr <inlieuoflou at gmail.com>wrote:
>>>
>>>> the error in the Ternimal....
>>>> louiss-imac:~ Mine$ VirtualBox -startvm "LMDE Cinnamon" --rmode image
>>>> VirtualBox: error: Code NS_ERROR_NOT_IMPLEMENTED (0x80004001) - Not
>>>> implemented (extended info not available)
>>>> VirtualBox: error: Context:
>>>> "Notify3DEvent(VBOX3D_NOTIFY_EVENT_TYPE_VISIBLE_WINDOW, NULL)" at line 266
>>>> of file crservice.cpp
>>>>
>>>>
>>>>  On Thu, May 30, 2013 at 4:48 PM, Louis King Jr <inlieuoflou at gmail.com>wrote:
>>>>
>>>>> when I use 'VirtualBox -startvm <guest's name> --rmode image' I get a
>>>>> message about starting in 16 bit color mode although it does start in 32
>>>>> bit color. The screenshot is still black. That's when I tried it with LMDE
>>>>> - Cinnamon.
>>>>>
>>>>>
>>>>>  On Thu, May 30, 2013 at 3:30 PM, Sergey Dubov <
>>>>> Sergey.Dubov at oracle.com> wrote:
>>>>>
>>>>>>  Louis King Jr <inlieuoflou at gmail.com> писал(а) в своём письме Thu,
>>>>>> 30 May 2013 22:00:53 +0400:
>>>>>>
>>>>>>
>>>>>>  This has been a long standing problem with VirtualBox running on
>>>>>> Mac hosts. For whatever reason screenshots on Linux guests running Compiz
>>>>>> or Unity or Gnome3 or Cinnamon can not take screenshots. All one gets is an
>>>>>> empty black screen. I've been told this is not an issue for the Windows or
>>>>>> Linux versions of VB. As of today's 4.2.51 version it's still an issue. If
>>>>>> it is one of the things being worked on currently of course ignore this
>>>>>> message.
>>>>>>
>>>>>>  I would mention the current version of Debian 7 with Gnome 3 does
>>>>>> actually work as far as screenshots go and I have no idea why.
>>>>>>
>>>>>>
>>>>>>  Hi.
>>>>>>  Is it the case with QImage frame-buffer too?
>>>>>> I mean by default MacOS X host VM uses Quartz2D frame-buffer but
>>>>>> there is an experimental QImage frame-buffer support which can be used by
>>>>>> trunk VM through '--rmode image' passed as additional argument to
>>>>>> 'VirtualBox -startvm <vm name>' like:
>>>>>> VirtualBox -startvm Ubuntu --rmode image
>>>>>>
>>>>>>  --
>>>>>>  *With Best Regards,*
>>>>>> *[Oracle/VirtualBox] Sergey Dubov
>>>>>> *
>>>>>> *
>>>>>> *
>>>>>>
>>>>>>  _______________________________________________
>>>>>> vbox-dev mailing list
>>>>>> vbox-dev at virtualbox.org
>>>>>> https://www.virtualbox.org/mailman/listinfo/vbox-dev
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>> Hi.
>>>
>>>  Ok, it seems the screen-shot issue is deeper than the used
>>> frame-buffer type.
>>> Is it 3D related thing? I mean is the screenshot correct when you are
>>> getting it with 3D turned off for the same VM?
>>>
>>>  About error warnings in terminal, you can ignore these warnings for
>>> now.
>>> They are related to new functionality which is not yet implemented from
>>> the GUI side.
>>>
>>>  --
>>>  *With Best Regards,*
>>> *[Oracle/VirtualBox] Sergey Dubov
>>> *
>>> *
>>> *
>>>
>>> _______________________________________________
>>> vbox-dev mailing list
>>> vbox-dev at virtualbox.org
>>> https://www.virtualbox.org/mailman/listinfo/vbox-dev
>>>
>>>
>>
>
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