public void preFrame(float tpf) {
if (filters.isEmpty() || lastFilterIndex == -1) {
// If the camera is initialized and there are no filter to render, the camera viewport is
// restored as it was
if (cameraInit) {
viewPort.getCamera().resize(originalWidth, originalHeight, true);
viewPort.getCamera().setViewPort(left, right, bottom, top);
viewPort.setOutputFrameBuffer(outputBuffer);
cameraInit = false;
}
} else {
if (renderFrameBufferMS != null) {
viewPort.setOutputFrameBuffer(renderFrameBufferMS);
} else {
viewPort.setOutputFrameBuffer(renderFrameBuffer);
}
// init of the camera if it wasn't already
if (!cameraInit) {
viewPort.getCamera().resize(width, height, true);
viewPort.getCamera().setViewPort(0, 1, 0, 1);
}
}
for (Iterator<Filter> it = filters.iterator(); it.hasNext(); ) {
Filter filter = it.next();
if (filter.isEnabled()) {
filter.preFrame(tpf);
}
}
}
