On 13 May 2007, at 10:58, bruce wrote:
> I ended up using glPixelZoom(1.0,-1.0) to flip the image before I
> read this. What you have below seems like it will reduce work (not
> knowing much about the zoom operation). I'll check out setting the
> stride. I know nothing about graphics but I'm having fun learning. :)
You can also, IIRC, change the OpenGL viewport, so it has its co-
ordinate system aligned more like a conventional GUI window (i.e. 0,0
at top left).
Of the top of my head, something like this at the top of your draw
method might help...
glPushMatrix();
glLoadIdentity();
glOrtho(0, w(), h(), 0, -1, 1);
followed by a
glPopMatrix();
Near the end might do it. Or I could be talking nonsense. It's early
here... And I always get the Ortho stuff wrong, so you'd best check
the manuals and not believe me!
> I'm an embedded programmer and I'm lucky to have an rs232 terminal
> half the time.
I know all about that one...
Cheers,
--
Ian
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