[osg-users] Rendering to a texture only

J.P. Delport jpdelport at csir.co.za
Mon Oct 15 23:39:19 PDT 2007


wrt question 1:
you could look at Mesa (www.mesa3d.org) and use their OSMesa 
(off-screen) library. It is a software-only (obviously slow compared to 
hardware) OpenGL 2.1 implementation and works well with OSG. This will 
allow you to render to main memory in the PC.


Williams Steven-ASW036 wrote:
> I'd like to render to a texture only, not to the screen. The computer 
> (PC or unix) may not have a graphics card. Is this possible with OSG, or 
> even OpenGL in general?
> - If so, how do I render once my scene and texture camera is setup, 
> assuming I cannot use viewer's setSceneData/realize/frame calls?
> - If not, and I plug a graphics card in, can I render to multiple 
> textures at the same time, one per user thread? i.e. is the library 
> thread safe?
> thanks for the help
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