Surface data

[Wookey]

+++ Stuart Bennett [2011-09-12 12:41 +0100]:
> On 09/09/11 13:53, Wookey wrote:
> >+++ Stuart Bennett [2011-09-09 13:39 +0100]:
> >>Maybe it doesn't like me using the free opengl drivers :)
> >
> >You can submit a bugrep here: http://trac.survex.com/
> 
> "Service Temporarily Unavailable"

Hmm, so it is  - it was working when I check the URl for you.

Olly - poking time?

> >(I've cc:ed the mailing list)
> >
> >Wookey
> 
> After more digging the problem appears to be some disagreement about
> Aven's rendering choices.
> 
> GLACanvas::FinishDrawing() calls wxGLCanvas::SwapBuffers() which in
> turn calls glXSwapBuffers(), to swap the front and back rendering
> buffers. Unfortunately Aven hasn't requested a double buffered
> visual, and (admittedly in nonconformity with the spec)
> glXSwapBuffers doesn't like it.
> 
> Changing SwapBuffers() to glFlush() in GLACanvas::FinishDrawing()
> fixes it (adopting a single buffer rendering model), or changing
> 	if (!InitGLVisual(NULL)) {
> in aven.cc to
> 	int attribList[] = { WX_GL_DOUBLEBUFFER, 1, 0 };
> 	if (!InitGLVisual(attribList)) {
> also works by requesting a double buffered visual to start with.

Cheers for that - sounds like a useful fix.

Now you can got on to the problem you were _actually_ trying to solve
:-)

Wookey
-- 
Principal hats:  Linaro, Emdebian, Wookware, Balloonboard, ARM
http://wookware.org/