Bonjour Rémy,
> Just a stupid question : if the bottleneck is the update of the hose,
> what would you think about using VBOs ?
>
Well, on a hunch yesterday before leaving I did something that actually
improved things quite a bit: Before, when I wanted to switch off display
lists, I would use both these lines:
geometry->setUseDisplayList(false);
geometry->setUseVertexBufferObjects(true);
The result was that the geometry was not visible for some reason (which
leads to a separate question of what is necessary to get VBOs working
right, but that's not really important for now).
In one try, I "accidentally" did this:
geometry->setUseDisplayList(false);
//geometry->setUseVertexBufferObjects(true);
(i.e. DLs off but VBOs _not_ on - not sure what state that leaves the
geometry in...)
And that gave a really *huge* improvement! The cables are almost not
significant now in the draw time. So I guess it really was the display
list recompilation that was killing my draw time.
Thanks everyone for the tips and ideas for investigation. I'd say
problem solved at this point. :-)
J-S
--
______________________________________________________
Jean-Sebastien Guay [EMAIL PROTECTED]
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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