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Fix for bug #8898: QMC AO not working correct on objects pointing

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directly at the camera in some cases.
This commit is contained in:
Brecht Van Lommel 2008-04-10 12:52:48 +00:00
parent 1fe5302cce
commit 8b2b470d44
1 changed files with 5 additions and 5 deletions
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10
source/blender/blenlib/intern/arithb.c
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@ -2116,8 +2116,9 @@ void VecMulf(float *v1, float f)
void VecOrthoBasisf(float *v, float *v1, float *v2) void VecOrthoBasisf(float *v, float *v1, float *v2)
{ {
if (v[0] == 0.0f && v[1] == 0.0f) float f = sqrt(v[0]*v[0] + v[1]*v[1]);
{
if (f < 1e-35f) {
// degenerate case // degenerate case
v1[0] = 0.0f; v1[1] = 1.0f; v1[2] = 0.0f; v1[0] = 0.0f; v1[1] = 1.0f; v1[2] = 0.0f;
if (v[2] > 0.0f) { if (v[2] > 0.0f) {
@ -2127,9 +2128,8 @@ void VecOrthoBasisf(float *v, float *v1, float *v2)
v2[0] = -1.0f; v2[1] = v2[2] = 0.0f; v2[0] = -1.0f; v2[1] = v2[2] = 0.0f;
} }
} }
else else {
{ f = 1.0f/f;
float f = 1.0f/sqrt(v[0]*v[0] + v[1]*v[1]);
v1[0] = v[1]*f; v1[0] = v[1]*f;
v1[1] = -v[0]*f; v1[1] = -v[0]*f;
v1[2] = 0.0f; v1[2] = 0.0f;