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app: improve vivid-light formula

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This commit is contained in:
Øyvind Kolås
2017-01-23 22:39:42 +01:00
parent 2762662ca9
commit 5978def585
1 changed files with 3 additions and 2 deletions
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5
app/operations/layer-modes/gimpblendcomposite.h
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@ -1150,12 +1150,13 @@ blendfun_vivid_light (const float *dest,
if (src[c] > 0.5f) if (src[c] > 0.5f)
{ {
comp = (1.0f - (1.0f - dest[c]) / (2.0f * (src[c] - 0.5f))); comp = (1.0f - (1.0f - dest[c]) / (2.0f * (src[c])));
} }
else else
{ {
comp = dest[c] / (1.0f - 2.0f * src[c]); comp = dest[c] / (1.0f - 2.0f * (src[c] - 0.5));
} }
comp = MIN (comp, 1.0f);
out[c] = comp; out[c] = comp;
} }