spacetrain

Thanks for your quick response. I tried as you suggested but nothing happened. In fact, my system uses x11 window I modified the relevant line 498@display_x11.cpp. Of course I tried...

I mean context->had_input and context->has_resized in function Resize(...) in display.cpp

Okay. If I comment three lines (199, 236 and 355 in handler.cpp) which call function GetPosNormal(...), the black flickering effect does not occur. But I can only manipulate the viewing...

By commenting out a line https://github.com/stevenlovegrove/Pangolin/blob/master/src/handler/handler.cpp#L149 I don't see the flickering effect anymore. I also tested it with my native Ubuntu desktop and it shows no any other side effect....

I tested to add a line glReadBuffer(GL_BACK) after glReadPixels(...) so lines look like this #ifndef HAVE_GLES glReadBuffer(GL_FRONT) glReadPixels(...) glReadBuffer(GL_BACK) #else std::fill(zs,zs+zsize, 1); #endif Unfortunately, it also suffers from flickering after...

I am sorry but I cannot understand what you mean by "reading from the front buffer is important because that is what the user will be seeing ..." because currently...