[GEM-dev] framebuffer frustum

[cyrille henry]

Matthias Neuenhofer a écrit :
> super
> i compiled on Mac Osx 10.5.6.
> 
> there was no OS specific part in, should also work on Microsoft.
> 
> but shouldn´t the default texture out to rectangle?
why?
anyway, changing default could break old patch, so it's usually bad.

> 
> my attention to the framebuffer was a side effect looking
> for a way to sort the render order for proper keying and
> discovered [gemreceive] - thanx IOhannes - which
> support the [set $1( to sort the chain with z values via [gemlist_info]
> it´s not perfect - always 1 frame to late - looks ok.
gemhead does also accept ordering. (via set message)

> but - is a gemhead which sort all clients by himself thinkable?
i can't imagine a generic solution
> a mapping from the z position multiplied with 1000 to the priority
> before it´s drawn in the framebuffer.
you can do this by hand, in a 2 pass rendering : 
render a 1st time only to know the Z, then use it to change priority of the gemhead for the final rendering.

> 
> Matthias
> 
> Am 12.02.2009 um 14:14 schrieb cyrille henry:
> 
>> hello,
>> thanks, that will be usefull.
>>
>> it look like working ok on linux.
>> if there is no objections, i'll commit it in a few days.
>>
>> Cyrille
>>
>>
>> Matthias Neuenhofer a écrit :
>>> hi
>>> i ad the perspec message to the gemframebuffer.
>>> the frustrum can be set similar to gemwin
>>> - left, right, bottom, top, near, far -
>>> can someone ad this to the svn - if it suits ;)
>>> matthias
>>> attached code and modified helpfile
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> 
>