2.5 will not be compatible with 2.4 any way. So I see no point for introducing ogl namespace in master.

Also using namespace std; is prohibited in master as we already started a work on STL dependency removal. So please always explicitly qualify all std members with std:: prefix.

This PR also fixes this bugs:
http://code.opencv.org/issues/2737
http://code.opencv.org/issues/2848

👍

As far as I understand stl is being removed only from interface. So the requirement about using namespace std is extra. @taka-no-me Why do want this?

1. Bugfixes must be visible and separable from other work.
2. If you want to introduce ogl namespace in master then a) this design has to be discussed b) legacy version has to be removed.
3. Anatoly, you were invited to the discussion of stl removal. Now it is not a time for putting your disagreement on the decisions made.

@taka-no-me I'd like to say that soviet person doesn't answer questions directly :(

1. This issues aren't a bugs, it is compilation errors. I can fix it separately, but this PR rewrites affected files, so this fixes became unnecessary after this PR.
2. Legacy version was removed. Only new ogl:: version is available.

@taka-no-me Do you have any other remarks?

@Jet47, @taka-no-me: Namespace ogl is usually used for high level opengl wrappers I think to use such common name is not a good idea. Except ogl related changes I agree with this request.

do you mean conflict with other ogl namespaces? how about cv::ogl?

@cuda-geek

@Nerei, ogl is already in cv and from this point of view this is ok until somebody will write using namespace cv;.

@cuda-geek, ogl namespace is already used in 2.4 branch.

Please never use "already used" as an argument for not making the code better. And lets discuss the usage of namespaces in 2.5 on today's meeting. This question is wider then current debates on ogl namespace.

Updated commit message to reflect actual change and fixed issues and merged as ecb2ebf