[osg-users] How to properly compile osg with EGL support?

[Chris Hanson]

Based on what we've seen, the technique SHOULD work. I'm not in a position
to test and hack on it myself because I don't have an NVidia Linux box
handy.

It'd be good to have a standard example of osgViewerEGLnoX or something,
because there seems to be a growing number of folks who don't want an
XServer gumming up the works.

On Wed, Jan 23, 2019 at 9:59 PM Trajce Nikolov NICK <
trajce.nikolov.nick at gmail.com> wrote:

> Hi Omar,
>
> we are trying to get this running as well. Julien's hints should be enough
> to get it built. I also wrote some code to support EGL based on some
> off-list disucussion we had with Chris. All was great but got some crashes
> in osg and was not able to actually run it. I can share my work with you
> (tomorrow) if you want to give it a try and maybe together we make it work
> and share it with the community?
>
> Cheers,
> Nick
>
>
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>
> On Wed, Jan 23, 2019 at 7:51 PM Chris Hanson <xenon at alphapixel.com> wrote:
>
>> I know of a couple other people trying to do this. Let me know how you
>> get on with the X-less OSG.
>>
>> On Wed, Jan 23, 2019 at 7:31 PM Julien Valentin <
>> julienvalentin51 at gmail.com> wrote:
>>
>>> few advices:
>>> check your driver support with eglinfo
>>> try adding -legl to the linker flags
>>> try VERBOSE=1 make
>>> to check used linkerflags
>>> Cheers
>>>
>>>
>>>
>>> Omar Álvarez wrote:
>>> > Hi.
>>> > I am trying to compile OSG with EGL support in order to be able to run
>>> OSG server side without an X display server. I have installed EGL headers
>>> and the latest and the NVIDIA driver. EGL is detected by OSG and I am
>>> requesting GLVND GL:
>>> > > cmake -DOpenGL_GL_PREFERENCE=GLVND .
>>> >
>>> >
>>> > I am getting linking errors:
>>> > > [ 33%] Linking CXX executable ../../bin/osgversion
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glDrawArrays'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glCallList'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glPointSize'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glTexParameteriv'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glFrontFace'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glLightModeli'
>>> > > ../../lib/libosg.so.3.6.3: undefined reference to `glGetBooleanv'
>>> > > .........
>>> >
>>> >
>>> > Is this the proper way for compiling OSG with EGL support?
>>> > I am using CMake 3.13, Ubuntu 18.04 and gcc 7.3. I think the way in
>>> which the OpenGL library is linked has to change (to support the new CMake
>>> flag OpenGL_GL_PREFERENCE).
>>> >
>>> >  ------------------
>>> > Post generated by Mail2Forum
>>>
>>>
>>> ------------------------
>>> Twirling twirling twirling toward freedom
>>>
>>> ------------------
>>> Read this topic online here:
>>> http://forum.openscenegraph.org/viewtopic.php?p=75535#75535
>>>
>>>
>>>
>>>
>>>
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>>
>>
>> --
>> Chris 'Xenon' Hanson, omo sanza lettere. Xenon at AlphaPixel.com
>> http://www.alphapixel.com/
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>
>
> --
> trajce nikolov nick
>
>
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-- 
Chris 'Xenon' Hanson, omo sanza lettere. Xenon at AlphaPixel.com
http://www.alphapixel.com/
Training • Consulting • Contracting
3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 •
GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL
Legal/IP • Forensics • Imaging • UAVs • GIS • GPS •
osgEarth • Terrain • Telemetry • Cryptography • LIDAR • Embedded • Mobile •
iPhone/iPad/iOS • Android
@alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel (775)
623-PIXL [7495]
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