If you just want something quick try this http://github.prideout.net/strings-inside-vertex-buffers/

What's your source for that information? In my experience, compositors make this worse, as you're no longer directly in charge of when...

What are you trying to do (big picture that is, not per-fragment)? Per-fragment you're obviously just keeping the 2 lowest values. If every...

OpenGL Programming Guide is a well written book. I cannot realize what could be a problem. If you have a particular question, just ask. Otherwise,...

Exactly! That's the only way to go right now. I can understand that different hardware does things differently. Nope! Different drivers have...

As others have said use 'glReadPixels' to read your new image into an array. Exporting that array as a .bmp file is not something that OpenGL does....

They "could" be double buffered, but usually aren't. The situation may be better with compositing systems such as Aero (Windows) or Compiz (Linux). ...

That's because you're thinking about it wrong. The "complexity" here is a measure of the number of operations. If you render 1000 cubes, you have...

Ok great! Entering game mode has made the frame sequence a lot more stable (sometimes glitches - but no tearing- occur right after I start the...

I would deduce that vsync is working, in that it won't perform two swaps within the same frame, but that the swap doesn't occur immediately. ...

Thanks, GClements. But I was wondering if there's library or such that I can just plug in. I really don't want to spend time making glyphs myself...

For efficiency, you want to use as few draw calls as possible, i.e. one per line or block of text rather than one per glyph. The easiest way is to...

I have included glFinish(); in my display function, to no avail: the glitches/horizontal tearing still occur. I have also included the timers as...

I yet read it many times but I can't understand how to start! Anyway I'm trying with the other way of glunproject and hope I can do what I need

As an example, to create a strongly-typed OpenGL header file for Pascal, you would do something like this: Lets try glCullFace, in the XML file we...

GLSL doesn't have mutexes. You could presumably simulate one using an atomic counter and a busy-wait loop, but performance will degrade rapidly in...

If enabling vsync causes the framerate to change from 350 Hz to 60 Hz +/- 1 Hz, then vsync is working. This suggests that the actual buffer swap...

If your CPU application presumes that it is running synchronized with VSYNC, you must call glFinish() after SwapBuffers (wglSwapBuffers on Windows,...

Thanks for your detailed reply. First, I have determined the framerate with vsync disabled in the nvidia control panel. My application was...

glReadPixels

EDIT: Ah well, glReadPixels is probably good.