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Generate a step function by comparing two values.


genType step( genType edge, genType x );
genType step( float edge, genType x );
genDType step( genDType edge, genDType x );
genDType step( double edge, genDType x );


edge - Specifies the location of the edge of the step function.
x - Specify the value to be used to generate the step function.


 step generates a step function by comparing x to edge .

For elementiof the return value, 0.0 is returned if x [i] < edge [i], and 1.0 is returned otherwise.

Version Support[edit]

step (genType) 1.1+
step (genDType) 4.0+

See Also[edit]

 mix , smoothstep 


Copyright© 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.