From 8f40eba70279730c072942af52fbcd5801656e90 Mon Sep 17 00:00:00 2001 From: Simon Budig Date: Thu, 10 May 2012 21:26:48 +0200 Subject: [PATCH] change the pow() workaround to be more HDR safe --- app/operations/gimpoperationlevels.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/app/operations/gimpoperationlevels.c b/app/operations/gimpoperationlevels.c index 8863d59218..9ab9009cb8 100644 --- a/app/operations/gimpoperationlevels.c +++ b/app/operations/gimpoperationlevels.c @@ -86,16 +86,13 @@ gimp_operation_levels_map (gdouble value, gdouble low_output, gdouble high_output) { - /* clamp to guard pow() against negative input */ - value = MAX (value, low_input); - /* determine input intensity */ if (high_input != low_input) value = (value - low_input) / (high_input - low_input); else value = (value - low_input); - if (inv_gamma != 1.0) + if (inv_gamma != 1.0 && value > 0) value = pow (value, inv_gamma); /* determine the output intensity */