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if a pixel had accumulated color (0,0,0) and >0 density, a divide by 0 would take place.

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git-svn-id: https://flam3.googlecode.com/svn/trunk@12 77852712-ef1d-11de-8684-7d64432d61a3
This commit is contained in:
Erik Reckase 2010-05-10 22:05:47 +00:00 committed by Scott Draves
parent 1c335721c2
commit f0d93b3b51
1 changed files with 2 additions and 2 deletions
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4
src/palettes.c
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@ -288,7 +288,7 @@ void flam3_calc_newrgb(double *cbuf, double ls, double highpow, double *newrgb)
double a, maxa=-1.0, maxc=0;
double adjhlp;
if (ls==0.0) {
if (ls==0.0 || (cbuf[0]==0.0 && cbuf[1]==0.0 && cbuf[2]==0.0)) {
newrgb[0] = 0.0;
newrgb[1] = 0.0;
newrgb[2] = 0.0;
@ -303,7 +303,7 @@ void flam3_calc_newrgb(double *cbuf, double ls, double highpow, double *newrgb)
maxc = cbuf[rgbi]/PREFILTER_WHITE;
}
}
/* If a channel is saturated and we have a non-negative highlight power */
/* modify the color to prevent hue shift */
if (maxa>255 && highpow>=0.0) {