Hello!
I want to implement a method for reducing the draw resolution when the fill
rate is very low, but without resizing the window. I am going to use this
while the camera is moving(most of the time, the viewpoint and view
direction are static). My first solution was
to add a new camera and after each update, set the scene data to a
node containing that camera and a quad with a texture that the
normal scene
has been previously rendered to at a lower resolution than the viewport.
The current main loop looks like this:
while( !viewer.done() )
{
viewer.sync();
viewer.setSceneData(loadedModel.get());
viewer.updatedSceneData();
viewer.update();
viewer.setSceneData(rootNode.get());
viewer.updatedSceneData();
camera->setProjectionMatrix(viewerCamera->getProjectionMatrix());
camera->setViewport(0, 0, texWidth, texHeight);
camera->setViewMatrix(viewerCamera->getViewMatrix());
viewer.frame();
}
rootNode contains the quad and the new camera.
viewerCamera is the first one from osgProducer::Viewer.
This thing works, but I am not sure I am doing the right thing. What do you
think about this and how should I actually implement what I want ?
Thanks
Ovidiu
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