diff options
Diffstat (limited to 'source/blender/nodes')
| -rw-r--r-- | source/blender/nodes/intern/CMP_nodes/CMP_colorbalance.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/source/blender/nodes/intern/CMP_nodes/CMP_colorbalance.c b/source/blender/nodes/intern/CMP_nodes/CMP_colorbalance.c index f2e5815dfeb..cd614b12794 100644 --- a/source/blender/nodes/intern/CMP_nodes/CMP_colorbalance.c +++ b/source/blender/nodes/intern/CMP_nodes/CMP_colorbalance.c @@ -54,9 +54,10 @@ DO_INLINE float colorbalance_cdl(float in, float offset, float power, float slop return powf(x, 1.f/power); } -DO_INLINE float colorbalance_lgg(float in, float lift, float gamma, float gain) -{ - float x= powf(in * gain, lift); +/* note: lift_lgg is just 2-lift */ +DO_INLINE float colorbalance_lgg(float in, float lift_lgg, float gamma, float gain) +{ + float x= (((in - 1.0f) * lift_lgg) + 1.0f) * gain; /* prevent NaN */ if (x < 0.f) x = 0.f; @@ -124,7 +125,7 @@ static void node_composit_exec_colorbalance(void *data, bNode *node, bNodeStack NodeColorBalance *n= (NodeColorBalance *)node->storage; int c; for (c = 0; c < 3; c++) { - n->lift_lgg[c] = 2.0f - pow(n->lift[c], 2); + n->lift_lgg[c] = 2.0f - n->lift[c]; } } |