Re: [pygame] Fun with C modules

[Richard Jones <richardjones@optushome.com.au>]

On Fri, 21 Dec 2001 05:46, Pete Shinners wrote:
> > How many triangles are in the display list? I don't have the luxury of
> > display lists since the triangles share no similarity, being part of a
> > landscape. I use display lists for other things though, like trees, etc.
> > They definitely help there :)
>
> i think jan means draw the landscape using drawlists. even though you
> only use it once per frame, it means you only need to make a single
> function call to render the ground. (thus python gets out of the way)

The landscape is far too large do be put into a display list. The majority of 
the triangles aren't visible - which is why I'm using an octree to figure the 
potentially visible triangles. It's not the most optimal way to do landscape, 
but I intend to put all the other objects into the octree so they're all 
handled at once.

AAARGH!

So anyway, I just _tried_ that approach. All that hard work I'd put into the 
octree/frustum stuff. *sigh*

So I can't _change_ the landscape, and now I understand why that doesn't 
happen in games. Instead of stuffing my triangles into the octree, I just 
stuffed them into a display list. Frame rate went up from 42fps to 88fps. 
Without me converting any of the tris to tristrips.

Lesson learnt for today :)


> still, all the culling functions will be quicker in C, i've just not
> played with it that stuff to really know how much quicker.

A lot, by my timing :)


    Richard
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