Here is how I prepare the camera(s) for PPU:
/** Setup the camera to do the render to texture */
void Cl_3Dview_osg::setupCameraForPipeline() {
// setup viewer's default camera
osg::Camera* camera = view->getCamera();
osg::Viewport* vp = camera->getViewport();
// create texture to render to
osg::Texture* texture = createRenderTexture(
(int)vp->width(),
(int)vp->height(), false);
osg::Texture* depthTexture = createRenderTexture(
(int)vp->width(),
(int)vp->height(), true);
// tell the camera to use OpenGL frame buffer object where supported.
camera->setRenderTargetImplementation(
osg::Camera::FRAME_BUFFER_OBJECT);
// attach the texture and use it as the color buffer.
camera->attach(osg::Camera::COLOR_BUFFER, texture);
camera->attach(osg::Camera::DEPTH_BUFFER, depthTexture);
// if (wallpaperCamera.valid()) {
// wallpaperCamera->setRenderTargetImplementation(
// osg::Camera::FRAME_BUFFER);
// wallpaperCamera->attach(
// osg::Camera::COLOR_BUFFER,
texture);
// }
}
Commenting in our out of the last part does not do any difference. But why?
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=53398#53398
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