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app: remove odd ratio scaling, replace with range check for nan

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This commit is contained in:
Øyvind Kolås
2017-01-15 01:28:29 +01:00
parent 315ccc7f82
commit 60847cce73
1 changed files with 6 additions and 2 deletions
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8
app/operations/layer-modes/gimpoperationdivide.c
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@ -106,10 +106,14 @@ gimp_operation_divide_process_pixels (gfloat *in,
for (b = RED; b < ALPHA; b++)
{
gfloat comp = (4294967296.0 / 4294967295.0 * in[b]) / (1.0 / 4294967295.0 + layer[b]);
gfloat comp = in[b] / layer[b];
/* make infitinities(or NaN) correspond to a really high number,
* to get more predictable math */
if (!(comp > -4294967296.0f && comp < 4294967296.0f))
comp = 4294967296.0f;
out[b] = comp * comp_alpha + in[b] * (1.0 - comp_alpha);
out[b] = CLAMP (out[b], 0.0, 1.0);
}
}
else