GLMixer Code

Enable dragging mode in geometry and mixing views as default action when
grabbing the (pink) frame --previous behavior required to use panning
input button.

Saving frame capture with custom resolutions.

Capture Source creation with custom resolution. Bug fix JPEG plugin.

Enable/disable Pixel Buffer Object in application preferences.
Asynchronous refresh of resolution change in rendering widgets.

Saving detailed logs of video playing memory use to file in DEBUG mode.

Save logs on error.

Compatibility for OpenGL < 4.3 : glGetInternalformativ was used without
without being tested.

Disable Source editing action while its implementation is not reliable.

Various fix in Cpack Debian package generator.

Limit size of texture to system's maximum OpenGL texture size.