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ensure consistent behaviour of hlCurve and shCurve, Issue 2626

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Ingo
2015-01-10 14:09:43 +01:00
parent 3dfa00a059
commit 3548a1783a
1 changed files with 2 additions and 1 deletions
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3
rtengine/curves.cc
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@@ -659,6 +659,7 @@ void CurveFactory::curveToningLL ( bool & llctoningutili,const std::vector<doubl
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
hlCurve.setClip(LUT_CLIP_BELOW); // used LUT_CLIP_BELOW, because we want to have a baseline of 2^expcomp in this curve. If we don't clip the lut we get wrong values, see Issue 2621 #14 for details
float exp_scale = a;
float scale = 65536.0;
float comp = (max(0.0,ecomp) + 1.0)*hlcompr/100.0;
@@ -688,7 +689,7 @@ void CurveFactory::curveToningLL ( bool & llctoningutili,const std::vector<doubl
//%%%%%%%%%%%%%%%%%%%%%%%%%%
// change to [0,1] range
shCurve.setClip(LUT_CLIP_ABOVE); // used LUT_CLIP_ABOVE, because the curve converges to 1.0 at the upper end and we don't want to exceed this value.
float val = 1.f/65535.f;
float val2 = simplebasecurve (val, black, 0.015*shcompr);
shCurve[0] = CLIPD(val2)/val;