forked from bartvdbraak/blender
Fix for bug #8898: QMC AO not working correct on objects pointing
directly at the camera in some cases.
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1fe5302cce
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8b2b470d44
@ -2116,8 +2116,9 @@ void VecMulf(float *v1, float f)
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void VecOrthoBasisf(float *v, float *v1, float *v2)
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void VecOrthoBasisf(float *v, float *v1, float *v2)
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{
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{
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if (v[0] == 0.0f && v[1] == 0.0f)
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float f = sqrt(v[0]*v[0] + v[1]*v[1]);
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{
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if (f < 1e-35f) {
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// degenerate case
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// degenerate case
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v1[0] = 0.0f; v1[1] = 1.0f; v1[2] = 0.0f;
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v1[0] = 0.0f; v1[1] = 1.0f; v1[2] = 0.0f;
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if (v[2] > 0.0f) {
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if (v[2] > 0.0f) {
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@ -2127,9 +2128,8 @@ void VecOrthoBasisf(float *v, float *v1, float *v2)
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v2[0] = -1.0f; v2[1] = v2[2] = 0.0f;
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v2[0] = -1.0f; v2[1] = v2[2] = 0.0f;
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}
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}
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}
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}
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else
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else {
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{
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f = 1.0f/f;
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float f = 1.0f/sqrt(v[0]*v[0] + v[1]*v[1]);
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v1[0] = v[1]*f;
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v1[0] = v[1]*f;
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v1[1] = -v[0]*f;
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v1[1] = -v[0]*f;
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v1[2] = 0.0f;
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v1[2] = 0.0f;
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