<jittershader name="Threshold"> 
<param name="levels" type="float" default="2" /> 
<language name="glsl" version="1.0"> 
<bind param="levels" program="fp" /> 
<bind param="tex0" program="fp" /> 
<program name="vp" type="vertex" source="v001.posterize.vp.glsl" /> 
<program name="fp" type="fragment" source="v001.posterize.fp.glsl" /> 
</language> 
</jittershader> 
