Hi,
I’m trying to correctly support both OSG 3.2.x and 3.4.x in a codebase (since
we need to support older versions of Debian / Ubuntu which still ship OSG 3.2.x
as the supported version)
I have some FBO camera which I’m resizing: in 3.4.x I use
osg::Camera::resizeAttachments. In 3.2.x there’s no such method of course, so I
am manually resizing the FBO backing texture via:
_fboTexture->setTextureSize(width, height);
_fboTexture->dirtyTextureObject();
However, after a resize, I still don’t see the contents of the FBO camera
(everything works as expected if I keep the original window size: these are
full-screen FBOs so I need to keep them in sync with the main window size).
I’ve look at various pieces of code across the 3.2 branch, and tried a few
things to no avail: in particular I hoped this might update the attachment data:
detach(osg::Camera::COLOR_BUFFER);
attach(osg::Camera::COLOR_BUFFER, _fboTexture);
(on my osg::Camera subclass) but to no avail.
I’ve seen some code which calls:
osgViewer::Renderer::setCameraRequiresSetUp
.. but at least for my FBO camera the renderer is null so this doesn’t work for
me/
Any hints on what else to try, to work-around this behaviour, or other examples
of keeping a full-screen FBO camera in sync with 3.2.x, would be most
appreciated.
Kind regards,
James
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