If OpenGL libraries are not installed correctly then shouldn't there be
issue with raytracer launched from graphics window also?
Shailesh Tripathi
B.Tech. Part-IV
Electronics Engineering
IIT-BHU (Varanasi)
On Fri, Mar 24, 2017 at 10:36 PM, Shailesh Tripathi <
shailesh.tripathi.ec...@itbhu.ac.in> wrote:
> Hello,
> I am using centos 6.8
> For OpenGL, should I install the libraries from mesa-libgl, GLEW or
> freeglut?
>
> Regards
> Shailesh
>
> Shailesh Tripathi
> B.Tech. Part-IV
> Electronics Engineering
> IIT-BHU (Varanasi)
>
> On Fri, Mar 24, 2017 at 10:29 PM, Vasco Alexandre da Silva Costa <
> vasco.co...@gmail.com> wrote:
>
>> Hello,
>> A proper answer to your question requires more information to be
>> provided. Which operating system and version are you using, if it's Linux
>> which distro, etc.
>>
>> From the errors you got, it looks like you don't have OpenGL properly
>> installed on your system.
>>
>> On Fri, Mar 24, 2017 at 4:27 PM, Shailesh Tripathi <
>> shailesh.tripathi.ec...@itbhu.ac.in> wrote:
>>
>>> Hello,
>>> I was trying this tutorial for learning mged "
>>> http://brlcad.org/VolumeII-Introduction_to_MGED.pdf";. The raytrace
>>> works as expected if launched from graphics window. But how to launch the
>>> same from command window. I just typed 'rt' and it shows the following
>>> error:
>>>
>>>
>>>
>>> *Xlib: extension "GLX" missing on display ":0.0".Xlib: extension "GLX"
>>> missing on display ":0.0".Xlib: extension "GLX" missing on display ":0.0".*
>>>
>>>
>>>
>>>
>>> *fb_ogl_open: double buffering not available. Using single buffer.Xlib:
>>> extension "GLX" missing on display ":0.0".Xlib: extension "GLX" missing on
>>> display ":0.0".Xlib: extension "GLX" missing on display ":0.0".*
>>>
>>> *fb_ogl_open: Couldn't find an appropriate visual. Exiting.*
>>>
>>> *fb_open: can't open device "dev/ogl", ret=-1.*
>>>
>>> *rt: can't open frame buffer*
>>> *Raytrace failed.*
>>>
>>> I have installed OpenGL on my system.
>>>
>>> Also, what changes do I need to make for using raytrace using "OpenCL"
>>> with the command "*rt -z1*"
>>>
>>>
>>> Regards
>>> Shailesh Tripathi
>>>
>>> Shailesh Tripathi
>>> B.Tech. Part-IV
>>> Electronics Engineering
>>> IIT-BHU (Varanasi)
>>>
>>> ------------------------------------------------------------
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>>>
>>
>>
>> --
>> Vasco Alexandre da Silva Costa
>> PhD in Computer Engineering (Computer Graphics)
>> Instituto Superior Técnico/University of Lisbon, Portugal
>>
>> ------------------------------------------------------------
>> ------------------
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>>
>>
>
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