Hello Dominik, Marcus,
Dominik Rau wrote:
> Hi Marcus.
>
> Am 14.08.2008 um 09:37 schrieb Marcus Lindblom:
>
>> My bet is that the OSG::Image (in system memory) never gets updated
>> from
>> it's corresponding buffer on the gfx-card (which you write to using
>> FBOViewport). To do so would require a glReadPixels() or
>> glGetTexImage()
>> (or whatever the latter is called) to download data to the OSG::Image.
>
>
> Yep - I think you're right. And I also think that glGetTexImage is the
> way to go.
FBOViewport can be instructed to read the data back to cpu memory, the
field that controls this is sfReadBuffer.
Hope it helps,
Carsten
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