Re: gEDA-user: Gerbv with OpenGL

["evan foss" <evanfoss@xxxxxxxxx>]

On Dec 2, 2007 9:47 PM, Peter Clifton <pcjc2@xxxxxxxxx> wrote:
>
> On Sun, 2007-12-02 at 20:42 -0500, evan foss wrote:
> > Do you have the option of disabling the opengl code at run time if you
> > want or is it compiled in?
>
> Not only is it compiled in, the board size is hard-coded. (Its a demo so
> far..) I wanted to see how fast it might work with different rendering
> schemes. I'd have posted code if it wasn't full of _evil_ hacks at the
> moment. Once I've a better feel for the direction this might go in, I
> can tidy up the code and make it useful.
>
> Surprisingly, it wouldn't be too hard to switch out the GL code if
> desired. You just replace some setup code, and bits of the expose,
> configure and realize handlers for the drawing area.
>
> The one rendering method which I wanted to try out (but haven't had
> satisfactory results from yet) is using the cairo-glitz backend to make
> cairo-calls do native OpenGL things. It was even slower than native
> Cairo when I tried... felt like it must have been hitting loads of
> software fallbacks in mesa.
>
> Whether the 3D has any useful purpose other than looking "bling" and to
> help me learn little GL programming, is debatable. Still.. many packages
> can / do provide 3D board views.. I'm just not sure if gerbv is the
> right place for it.
>
> Best wishes,
>
> --
> Peter Clifton
>
> Electrical Engineering Division,
> Engineering Department,
> University of Cambridge,
> 9, JJ Thomson Avenue,
> Cambridge
> CB3 0FA
>
> Tel: +44 (0)7729 980173 - (No signal in the lab!)

Ok just curious thanks.

-- 
http://www.coe.neu.edu/~efoss/
http://evanfoss.googlepages.com/


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