Creates a relief texture on an image by applying light and shade to the image according to changes of intensity in the mask.
            
            Requires an Input (RGB or RGBA) and a Bump Matte (A).
            
            Produces an Output (RGB or RGBA).
            
             
               Bump
               
 
               
                  
                     
                        
                        
                     
                     
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                            | Sets the scale of the effect. The larger the value, the greater the effect. If a negative value is given, the bump will be
                              recessed.
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                            | Sets the color of the light. | 
                     
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                            | Sets the angle of the light to be used when calculating the light and shade. At zero degrees the light comes from 9 O'clock,
                              positive values move counterclockwise.
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