2 Replies Latest reply on Feb 2, 2009 2:18 PM by AIF Bob

    exp2 on CPU

      The attached filter should produce a black output image regardless of the parameter, since according to the Pixel Bender reference exp2(x) = pow(2,x).
      When running it on the GPU this is actually the case while running it on the CPU the output is a grayscale image depending on the parameter.
      One can change exp2 to exp and the base of the pow() function to 2.718... and everything works fine: the output is all black whether run on the GPU or CPU and is independent of the parameter setting. So this seems to be an issue concerning the exp2 implementation for the CPU?

      Do you get the same results?
      Did I get the math right anyway?