::glPauseTransformFeedback’ has not been declared

[Schneegans]

Hey there! First of all: Thanks for this awesome library! I'm using it for a while now and I really appreciate it. Today I tried to compile an application using oglplus on another computer and run into a strange error I failed to fix.

System:

• Ubuntu 12.04 64bit
• Nvidia GTX 680 (dirver 319.49)
• OpenGL 4.3.0
• gcc 4.8.1

Steps I performed:

• checkout current develop branch of oglplus from github
• configure with ./configure.py --strict-gl-version-detection=0 --use-gl-api-lib GLEW
• all went well, some examples will be skipped due to 'GL_ARB_transform_feedback2' not implemented properly
• compilation of source/lib/oglplus/object.cpp thows the following errors:
  • oglplus/texture.hpp:294:37: error: no members matching ‘oglplus::ObjBindingOps<oglplus::tag::Texture>::BindImage’ in ‘class oglplus::ObjBindingOps<oglplus::tag::Texture>’
  • oglplus/glfunc.hpp:53:30: error: ‘::glPauseTransformFeedback’ has not been declared
  • and some more regarding TransformFeedback

Do you have a hint how this problems may be solved? Do you need more information? Thanks for the effort!

[matus-chochlik]

Thanks for reporting this, it seems that there are some problems with ifdef guards for transform feedback and other things. But this also might be a GLEW bug (GLEW is known for sometimes missing some functions that are required by the GL specification).

Could you check your GLEW version and also check the GLEW header itself and see if glPauseTransformFeedback is defined?

[matus-chochlik]

In the meantime, you could try to use GL/glcorearb.h and libGL.so directly. I usually do that and it works without problems on Ubuntu. You just need to specify to the configure script the directory where 'GL/glcorearb.his located with the--include-diroption and the directory where thelibGL.soyou want to use (the one comming with the nVidia driver) is installed with the--library-diroption and also specify the--use-glx` option. Try ./configure.py --help for more info.

[Schneegans]

Thanks for the quick reply! My current GLEW version is 1.5.7 and it only defines glPauseTransformFeedbackNV. I switched to GLEW 1.6.0 and now this part of the issue is resolved!

gcc still complains about oglplus/texture.hpp:294:37: error: no members matching ‘oglplus::ObjBindingOps<oglplus::tag::Texture>::BindImage’ in ‘class oglplus::ObjBindingOps<oglplus::tag::Texture>’

[matus-chochlik]

There was a missing ifdef guard in texture.hpp. I've fixed that in commit 3af082888e40722380a81dceec5d132ce49453b6. Please pull the latest from the develop branch a let me know if it works for you.

[Schneegans]

Thank you very much! I'll have to wait until monday, since I don't have access to the computer for trying it now. Have a nice weekend!

[Schneegans]

The issue is resolved. Everything works as supposed! Thanks for the hard work and the quick fix!