https://bugs.documentfoundation.org/show_bug.cgi?id=93530
--- Comment #4 from Michael Meeks <[email protected]> --- My start on this was (it seems) a big bogus; we don't really need to glFlush there at all =) After adding glFlush's across the code, and binary chopping down to a single nonsensical data-point - I assume memory corruption / non-initialization instead. Reading: https://www.opengl.org/wiki/Common_Mistakes#Swap_Buffers It seems we badly need to glClear() our buffers before we begin rendering; I pushed a patch that does this and makes the menus work for me on click - and pleasant it is to see them too. We should prolly also disable the Windows direct GDI calls that wipe this memory with direct FillRect() calls very early in their creation to avoid flicker & potential aggravation. Input appreciated. -- You are receiving this mail because: You are the assignee for the bug.
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