@Override
    public void onAction(String name, boolean isPressed, float tpf) {
        if (isPressed) {
            if (name.equals("incr-passes")) {
                bloom.setNumSamplingPasses(Math.min(bloom.getNumSamplingPasses()+1, maxPasses));
            } else if (name.equals("decr-passes")) {
                bloom.setNumSamplingPasses(Math.max(bloom.getNumSamplingPasses()-1, 1));
            } else if (name.equals("toggle-bilinear")) {
                bloom.setBilinearFiltering(!bloom.isBilinearFiltering());
            }
            updateHud();
        }
    }
Tests {@link SoftBloomFilter} with HDR.
<p>
Note: the camera is pointed directly at the ground, which is completely
black for some reason.

@author codex
jme3-examples/src/main/java/jme3test/post/TestSoftBloom.java