[Ves] VES on the Raspberry Pi

Fri Jul 5 11:34:06 EDT 2013

As Aashish suggested, make sure VES_USE_DESKTOP_GL to OFF in the ves-host
build directory.  That way vesGL.h will include ES2/gl.h.   Next, you might
need to edit src/ves/CMakeLists.txt and comment out the line
add_subdirectory(Testing) so that the src/ves/Testing tests are not
compiled.  For now, just attempt to compile the tests in
src/ves/kiwi/Testing, and among those, just try TestKiwiViewer.cpp first.
Instead of commenting out lines in the CMakeLists.txt fiels, you can just
run "make TestKiwiViewer" and it will only compile the libraries and then
the single test program.  TestKiwiViewer.cpp should use the modified
vesKiwiTestHelper.h that I attached to my email, and that file uses
vesTestHelperRaspi.h, which does not use GLUT or X11.

Pat

On Fri, Jul 5, 2013 at 9:52 AM, Aashish Chaudhary <
aashish.chaudhary at kitware.com> wrote:

> On Fri, Jul 5, 2013 at 6:33 AM, John Donovan <mersey.viking at gmail.com>wrote:
>
>> OK, the issue I seem to be getting is a conflict between the function
>> declarations in gl.h and those in GLES/gl2.h while compiling
>> TestDrawPlane.cpp because (free)GLUT is including the standard OpenGL
>> headers. I'm surprised GLUT is needed at all on mobile platforms, but
>> vesTestHelper.h uses it.
>>
>
> No GLUT is not required on mobile platforms. We use it on desktop for
> testing.  Did you set VES_USE_DESKTOP_GL to OFF?  Another thing to try is
> set BUILD_TESTING to OFF (just to make sure you can compile core libraries
> on the system).
>
>>
>> As GLUT includes GL/gl.h, I can't even put the GLES include
>> directories first, and surely I don't have to overwrite GL/gl.h with
>> the GLES version. Maybe my configuration is messed up, I'll carry on
>> poking around.
>>
>> -John
>>
>> On 5 July 2013 01:04, Aashish Chaudhary <aashish.chaudhary at kitware.com>
>> wrote:
>> > +1 It would be awesome to completely support Raspberry Pi
>> >
>> >
>> >
>> >
>> > On Thu, Jul 4, 2013 at 4:43 PM, John Donovan <mersey.viking at gmail.com>
>> > wrote:
>> >>
>> >> Hi Pat,
>> >> Thanks for the quick reply. I'll get those files in and compiling
>> >> later. The project I am involved in is in its early stages, but I am
>> >> happy to hack on the VES source code to improve support for the Pi and
>> >> submit pull requests or patches if that would be of help.
>> >>
>> >> Regards,
>> >> John
>> >>
>> >> On 4 July 2013 21:33, Pat Marion <pat.marion at kitware.com> wrote:
>> >> > Hi John,
>> >> >
>> >> > Luis and I got VES to run on raspberry pi without X11, but the work
>> >> > didn't
>> >> > get far enough to get full support added to the VES repository.
>> >> > Attached
>> >> > are two files that are work in progress, this is as far as I got.  It
>> >> > works
>> >> > with basic mouse input, but it doesn't support keyboard input.  My
>> next
>> >> > plan
>> >> > was going to look at SDL to see if I could get key and mouse events
>> that
>> >> > way.
>> >> >
>> >> > To use the attached files, replace src/kiwi/vesKiwiTestHelper.h with
>> the
>> >> > attached file.  Copy vesTestHelperRaspi.h into src/kiwi.  Compile,
>> and
>> >> > hopefully if there are compile issues it's easy to fix.  Then launch
>> >> > TestKiwiViewer from the terminal before starting the graphical
>> desktop
>> >> > environment with X11.  You should get a fullscreen render window that
>> >> > shows
>> >> > the spaceship dataset.  Clicking the mouse should exit.  I think
>> >> > everything
>> >> > should work once the keyboard/mouse input is implemented.
>> >> >
>> >> > Luis and I also ran VES using X11, but I don't remember if that was
>> >> > using
>> >> > GLUT or if it used the old VES tests that used only EGL and ES 2.0
>> and
>> >> > got
>> >> > keyboard/mouse events directly from X11 apis instead of using GLUT.
>>  If
>> >> > you
>> >> > look at the git history of TestKiwiViewer.cpp, you'll find an older
>> >> > version
>> >> > before GLUT was used.
>> >> >
>> >> > Pat
>> >> >
>> >> >
>> >> > On Thu, Jul 4, 2013 at 4:09 PM, John Donovan <
>> mersey.viking at gmail.com>
>> >> > wrote:
>> >> >>
>> >> >> Having just watched the webinar on ITK and VTK on the Pi, I thought
>> I
>> >> >> would have a go at compiling VES on my Pi under the latest Raspbian
>> >> >> using the Superbuild. It compiled fine, but I'm having problems
>> >> >> running the examples.
>> >> >>
>> >> >> the video says that VES bypasses X completely which is great, but
>> if I
>> >> >> run TestKiwiViewer from the terminal (directly from the Pi, not via
>> >> >> SSH), I get:
>> >> >> freeglut (./TestKiwiViewer): failed to open display ''
>> >> >>
>> >> >> Running from within X gives me:
>> >> >> freeglut (./TestKiwiViewer): OpenGL GLX extension not supported by
>> >> >> display
>> >> >> ':0'
>> >> >>
>> >> >> When I was compiling VES it couldn't find GLUT, so I apt-installed
>> >> >> freeglut3-dev, which I presume is the right dependency. Also I'm
>> using
>> >> >> the version of cmake from the repo - 2.8.9 rather than the very
>> latest
>> >> >> one as suggested in the ITK on the Raspberry Pi video.
>> >> >>
>> >> >> Is there a step I have missed?
>> >> >>
>> >> >> Regards,
>> >> >> John
>> >> >>
>> >> >> --
>> >> >> One of the advantages of being disorderly is that one is constantly
>> >> >> making exciting discoveries. - AA Milne
>> >> >> _______________________________________________
>> >> >> Ves mailing list
>> >> >> Ves at public.kitware.com
>> >> >> http://public.kitware.com/cgi-bin/mailman/listinfo/ves
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> One of the advantages of being disorderly is that one is constantly
>> >> making exciting discoveries. - AA Milne
>> >> _______________________________________________
>> >> Ves mailing list
>> >> Ves at public.kitware.com
>> >> http://public.kitware.com/cgi-bin/mailman/listinfo/ves
>> >
>> >
>> >
>> >
>> > --
>> > | Aashish Chaudhary
>> > | R&D Engineer
>> > | Kitware Inc.
>> > | www.kitware.com
>>
>>
>>
>> --
>> One of the advantages of being disorderly is that one is constantly
>> making exciting discoveries. - AA Milne
>>
>
>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/ves/attachments/20130705/e87b0113/attachment-0002.html>