[osg-users] another shader question

[Marcus Fritzen]

I think I have understood what to do, more or less. The Problem is, that 
nothing changes. I can remember that I have read that you need some kind 
of callback for the texture. Is this correct and can someone explain me 
in a little bit more detail what kind of callback I need and what it is 
for? Thank a lot.

Robert Osfield schrieb:
> Hi Marcus,
>
> The way to do several rendering passes, using the result of the first
> one in the second pass is to use create a render to texture Camera to
> capture the first pass, then use the resulting texture in the second
> pass.
>
> Robert.
>
> On 7/24/07, Marcus Fritzen <mfritzen at uni-koblenz.de> wrote:
>   
>> Hello everybody,
>>
>> I asked the question before in the old list. How can I realize more than
>> one renderpass? What I want to have is two programs with each one
>> fragment shader.
>> In the first one I want to compute some things where I need
>> neighbourinformation of pixels. In the second one I want to compute
>> things on the modified first texture. So perhaps someone can tell me in
>> short, what I need and what I have to do.
>> Thanks,
>>
>> --
>> ----------------------------------------------------------------
>> Marcus Fritzen                  E-mail: mfritzen at uni-koblenz.de
>> University Koblenz
>> Triererstr. 105, 56072 Koblenz,
>> HIWI FB4 Herr Jackel
>> ----------------------------------------------------------------
>>
>> _______________________________________________
>> osg-users mailing list
>> osg-users at lists.openscenegraph.org
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
>>     
> _______________________________________________
> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>   

-- 
----------------------------------------------------------------
Marcus Fritzen			E-mail:	mfritzen at uni-koblenz.de
University Koblenz		Mobil:	+491786867360
Triererstr. 105, 56072 Koblenz,	
HIWI FB4 Herr Jackel
----------------------------------------------------------------