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Bugfix #25912

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Render bug in spothalo (weird horizontal line).
Appeared to be precision error... even for doubles,
before doing division a check for FLT_EPSILON works
better than DBL_EPSILON (if there's an alternative).
This commit is contained in:
Ton Roosendaal
2011-02-03 16:31:03 +00:00
parent 6a23716957
commit 54aa4fa3a2
1 changed files with 3 additions and 3 deletions
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6
source/blender/render/intern/source/shadeoutput.c
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@@ -154,8 +154,8 @@ float mistfactor(float zcor, float *co)
static void spothalo(struct LampRen *lar, ShadeInput *shi, float *intens)
{
double a, b, c, disc, nray[3], npos[3];
float t0, t1 = 0.0f, t2= 0.0f, t3, haint;
float p1[3], p2[3], ladist, maxz = 0.0f, maxy = 0.0f;
double t0, t1 = 0.0f, t2= 0.0f, t3;
float p1[3], p2[3], ladist, maxz = 0.0f, maxy = 0.0f, haint;
int snijp, doclip=1, use_yco=0;
int ok1=0, ok2=0;
@@ -202,7 +202,7 @@ static void spothalo(struct LampRen *lar, ShadeInput *shi, float *intens)
maxz*= lar->sh_zfac;
maxy= lar->imat[0][1]*p1[0]+lar->imat[1][1]*p1[1]+lar->imat[2][1]*p1[2];
if( fabs(nray[2]) < DBL_EPSILON ) use_yco= 1;
if( fabs(nray[2]) < FLT_EPSILON ) use_yco= 1;
}
/* scale z to make sure volume is normalized */