Hello,

IM wrote:
> I'm using openSG 1.8 ( dailybuild 9 Nov 2009 ) for a personal project 
> but I have some issues.
[SNIP]
> And here is the output:
> 
> Distance maps initialization complete!
> WARNING:  8cd9: framebuffer FRAMEBUFFER_DIMENSIONS

this is the OpenGL error (framebuffer status): 
GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT. The spec for 
GL_EXT_framebuffer_object (which is the extension used by the 
FBOViewport) requires all render buffers to have the same size.

Do you ever attach textures/images to an FBOViewport that are smaller 
than ones used in a previous pass? Does your ping-pong algorithm require 
any of the intermediate images? If not you can ping-pong between the 
same images and restrict rendering to a part of the image with the 
FBOViewports left, right, top, bottom settings - i.e. make use of the 
fact that it is a Viewport ;)

> WARNING:  
> (f:\devel\opensg\source\system\state\osgtexturechunk.cpp,1788): 
> TextureChunk::activate precheck failed: (null) (0x506)
> WARNING:  
> (f:\devel\opensg\source\system\state\osgtexturechunk.cpp,2411): 
> TextureChunk::deactivate precheck failed: (null) (0x506)

My guess would be that both of these are fallout from the FBO error 
there are one or more OpenGL errors queued and the precheck for 
activating the Textures just is the first place they are being caught.

        Cheers,
                Carsten

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