[osg-users] Crasch in extension->createShader when using remote desktop (Windows)

[OpenSceneGraph Users]

So no one else with this problem? That is not capable of starting for
example osgsimpleshaders.exe over Remote Desktop?

*c:\projects\newtrunk\bin\x64>..\..\build\VS2017\x64\osg\bin\osgsimpleshaders.exe*
Windows Error #127: [Screen #0] ChooseMatchingPixelFormat() -
wglChoosePixelFormatARB extension not found, trying GDI. Reason: The
specified procedure could not be found.

Rendering in software: pixelFormatIndex 3
Warning: detected OpenGL error 'invalid enumerant' at Before
Renderer::compile

On Wed, Dec 18, 2019 at 2:48 PM Anders Backman <andersb at cs.umu.se> wrote:

> Interesting. Im connecting to a Win10 from a Win10 machine. GLView tell me
> that OpenGL1.1 is available, which is the reason behind my problems.
> But I wonder how you manage to get it to work...
> I have Nvidia cards on both ends (not the same card though).
>
>
> [image: image.png]
>
> On Tue, Dec 17, 2019 at 4:49 PM Andrew Cunningham <
> osg-users at a-cunningham.com> wrote:
>
>> Hi,
>> I connect using Microsoft RDP from Windows 10 to Windows 10 and from Mac
>> OS X 10.15 to Windows 10 and I can verify that my shaders work fine using
>> OSG 3.6.4 when running my application over RDP.
>> The Windows 10 machine I am connecting to is using an nVidia graphics
>> card and as far as OSG is concerned it sees OpenGL as if I was running
>> "locally"
>>
>> However, if you are connecting to a Windows 7 machine ( even if it has
>> the same nVidia card), however, it all falls apart. Using RDP OSG only sees
>> the default MS Windows OpenGL, v1.1... thus shaders won't work and OSG
>> 3.6.4 is non-functional.
>>
>> Andrew
>>
>> On Tue, Dec 17, 2019 at 6:30 AM Anders Backman <andersb at cs.umu.se> wrote:
>>
>>> Hi all.
>>> Using OSG 3.6.4, Windows 10.
>>>
>>> Not sure what the current state of the world regarding Remote Desktop
>>> and OpenGL is.
>>> Perhaps someone can share some light onto this.
>>>
>>> If I run an application that use shaders over remote desktop from one
>>> windows machine to another I get:
>>>
>>> c:\build\VS2017\x64\osg\bin>osgsimpleshaders.exe
>>> Windows Error #127: [Screen #0] ChooseMatchingPixelFormat() -
>>> wglChoosePixelFormatARB extension not found, trying GDI. Reason: The
>>> specified procedure could not be found.
>>>
>>> Rendering in software: pixelFormatIndex 3
>>> Warning: detected OpenGL error 'invalid enumerant' at Before
>>> Renderer::compile
>>>
>>> > crash.
>>>
>>> This does not happen when using fixed functionality only, for example
>>> running osgviewer with some standard obj-model works just fine.
>>> However, as soon as a shader is requested, OSG crashes:
>>>
>>> _glShaderHandle = _extensions->glCreateShader( shader->getType() );
>>>
>>>   Exception thrown at 0x0000000000000000 in agxViewer.exe: 0xC0000005:
>>> Access violation executing location 0x0000000000000000.
>>>
>>>
>>>   0000000000000000() Unknown
>>> > osg160-osg.dll!osg::Shader::PerContextShader::PerContextShader(const
>>> osg::Shader * shader, unsigned int contextID) Line 533 C++
>>>
>>> osg160-osg.dll!osg::Shader::ShaderObjects::createPerContextShader(const
>>> std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
>>> defineStr) Line 426 C++
>>>   osg160-osg.dll!osg::Shader::getPCS(osg::State & state) Line 470 C++
>>>
>>> Anyone with more info on this?
>>> Is there any way around this?
>>>
>>> --
>>> __________________________________________
>>> Anders Backman, HPC2N
>>> 90187 Umeå University, Sweden
>>> anders at cs.umu.se http://www.hpc2n.umu.se
>>> Cell: +46-70-392 64 67
>>> _______________________________________________
>>> osg-users mailing list
>>> osg-users at lists.openscenegraph.org
>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>>
>> _______________________________________________
>> osg-users mailing list
>> osg-users at lists.openscenegraph.org
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
>
>
> --
> __________________________________________
> Anders Backman, HPC2N
> 90187 Umeå University, Sweden
> anders at cs.umu.se http://www.hpc2n.umu.se
> Cell: +46-70-392 64 67
>


-- 
__________________________________________
Anders Backman, HPC2N
90187 Umeå University, Sweden
anders at cs.umu.se http://www.hpc2n.umu.se
Cell: +46-70-392 64 67
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