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Bugfix #33087

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Shader nodes (Blender Internal), Math node Power() didn't accept negative
values for input. Added same code as for compositor case - only allow to
raise with integer values for negatives.
This commit is contained in:
Ton Roosendaal
2012-11-05 13:43:02 +00:00
parent cf30cb2cff
commit 6ee3bf5300
1 changed files with 15 additions and 4 deletions
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19
source/blender/nodes/shader/nodes/node_shader_math.c
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@@ -137,11 +137,22 @@ bNodeStack **out)
break;
case 10: /* Power */
{
/* Don't want any imaginary numbers... */
if ( in[0]->vec[0] >= 0 )
/* Only raise negative numbers by full integers */
if ( in[0]->vec[0] >= 0 ) {
out[0]->vec[0] = pow(in[0]->vec[0], in[1]->vec[0]);
else
out[0]->vec[0] = 0.0;
}
else {
float y_mod_1 = fmod(in[1]->vec[0], 1);
/* if input value is not nearly an integer, fall back to zero, nicer than straight rounding */
if (y_mod_1 > 0.999f || y_mod_1 < 0.001f) {
out[0]->vec[0] = powf(in[0]->vec[0], floorf(in[1]->vec[0] + 0.5f));
}
else {
out[0]->vec[0] = 0.0f;
}
}
}
break;
case 11: /* Logarithm */