HI Brian, If shaders are being used for lighting then all you can do is change uniforms or change the shaders themelves, no enabling or disabling of the GL_LIGHTING etc will make a difference. Putting in callbacks won't help either - you have to substitute the shaders being used, and the OSG's standard state inheritance mechanism or just traversing through the scene will help.
Robert. On 3 Nov 2006 17:00:35 -0000, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi, I have been trying to disable lighting in my RTT CameraNode. Well, I have discovered that it is not a true light that I am concerned with here. The lighting is being implemented through a shader that a coworker wrote, so the stateset management has been working all along. However, since the shader has no knowledge of this, it continues to produce lighting effects. While I am using Delta3D as my rendering package, the core OSG is exposed to me. I have set up a preframe callback for my main Producer camera, and I'm using a node visitor with an update callback for the CameraNode. Closer inspection of my code (it's been several months since I set it up originally) reveals that my rendering is set up like CameraNode Producer camera -> scene -> CameraNode -> drawables No RTT Producer camera -> scene -> drawables I'm using osgNV to modify the shader uniform for disabling the light shader, and while both the preframe callback and node visitor update callback are hit, only the changes made by the preframe callback are taken into account. Setting the light uniform in the preframe callback to render renders the light for both cameras even though I'm saying otherwise in the node visitor update callback. I'm obviously going about this the wrong way, but I don't know what other way to go. I've also tried setting up a frame buffer object update callback like: osg::FrameBufferObject *fbo = new osg::FrameBufferObject(); // actually, fbo is a ref pointer, but to help it fit on one line // I removed that code. fbo->setUpdateCallback(new FboCallback(true)); This had absolutely no effect. The callback's () operator was never hit. Any help would be greatly appreciated. Thanks, Brian _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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