#731 Tulip and OpenGL 1.1 (reopen)

[BeNours]

With Windows 7, by a remote desktop, I launch an application using tulip.
On a windows remote desktop, opengl is version 1.1 (http://www.opengl.org/discussion_boards/showthread.php/164372-Remote-Desktop).

In some places in the code, glMultiDrawArrays is used, but available since opengl 1.4 only. Thus in result, I obtain a segmentation fault.

It seems missing a check concerning that, and:
1. informing the user that his opengl is too old for performant rendering
2. rendering is limited:
a. by changing all glMultiDrawArrays by glDrawArrays or
b. by doing no draw

But this problem is available for all computers having opengl driver to 1.1.

[Patrick Mary]

This bug is fixed since Tulip 4.4.