Hi J.P,

I haven't tried the example yet, but if the camera is allocating X11
resources it sounds like its using a pbuffer rather than an FBO.  Are
you using FBOs?  Does you hardware/drivers support FBO?

Robert.

On Fri, Nov 7, 2008 at 12:40 PM, J.P. Delport <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> a colleague of mine is trying to implement an image processing algorithm
> that requires many RTT cameras (+-150).
>
> His algorithm runs on his Windows machine, but fails under Linux (I'm quite
> sad about it :) with some of the following errors:
>
> --8<--
>
> Got an X11ErrorHandling call display=0x80a8c80 event=0xbf991100
> BadAlloc (insufficient resources for operation)
>
> Got an X11ErrorHandling call display=0x80a8c80 event=0xbf991160
> BadDrawable (invalid Pixmap or Window parameter)
>
> Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,)
> RenderStage::drawInner(,) FBO status= 0x8cd5
>
> --8<--
>
> We've narrowed the problem down to just camera creation and frame rendering.
> Texture sizes do not seem to influence the error. I've made a small test
> application (attached) that creates the errors.
>
> On my Linux laptop the errors start appearing at around 220 cameras. On
> another Linux machine we can get about 10 more. On Windows we've been able
> to test up to 3000 (the apps starts up too slowly if we add more).
>
> Does anyone have any ideas about why and where the cameras are creating X
> resources?
>
> Art (if you are around), does osgPPU use osg::Camera? Maybe we can move to
> osgPPU if not.
>
> Any pointers to help us debug are welcome.
>
> regards
> jp
>
>
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