Hi Nicolas,
The error indicates an incomplete frame buffer setup.
As far as I remember You need to use the PACKED_DEPTH_STENCIL_BUFFER, as
stencil buffers are not attachable themselves (you cannot directly load
back a stencil buffer) but only in combination with the depth buffer.
Take a look at the osgpackeddepthstencil example, it might contain some
additional help.
My own MRT/FBO code is to convoluted to be of any use directly, but it
seems I use PACKED_DEPTH_STENCIL_BUFFER as well.
Cheers
Sebastian
Hello Sebastian. Thank you very much for your answer.
I can create a depth texture and share it between the two cameras. It works.
However it doesn't share the stencil buffer.
I tried creating a texture for the stencil and attaching it to both camera,
just like I did for the depth buffer. Like this :
Code:
osg::Texture2D* _display_stencil = new osg::Texture2D();
_display_stencil->setInternalFormat(GL_STENCIL_INDEX8_EXT);
_display_stencil->setFilter(osg::Texture2D::MIN_FILTER,
osg::Texture2D::NEAREST);
_display_stencil->setFilter(osg::Texture2D::MAG_FILTER,
osg::Texture2D::NEAREST);
_stencil_camera->attach(osg::Camera::STENCIL_BUFFER, _display_stencil, 0, 0,
false, 0, 0);
_display_camera->attach(osg::Camera::STENCIL_BUFFER, _display_stencil, 0, 0,
false, 0, 0);
But it gave me an error message "RenderStage::runCameraSetUp(), FBO setup failed,
FBO status= 0x8cd6", and it doesn't work of course.
I also tried creating a common texture for both the stencil and the depth
buffer, using GL_DEPTH_STENCIL_EXT or GL_DEPTH24_STENCIL8_EXT format, and
attaching it to both cameras, but it gave me the same error.
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=65346#65346
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