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Fix T41139: Cycles Hair BSDF roughness problem

This commit is contained in:
Sergey Sharybin 2014-07-27 19:49:43 +06:00
parent 234ae0b5ac
commit 34937f6547
Notes: blender-bot 2023-02-14 10:18:54 +01:00 
Referenced by issue #41139, Cycles Hair BSDF roughness problem
1 changed files with 3 additions and 3 deletions
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6
intern/cycles/kernel/geom/geom_curve.h
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@ -936,9 +936,10 @@ ccl_device_inline float3 bvh_curve_refine(KernelGlobals *kg, ShaderData *sd, con
sd->u = isect->u;
sd->v = 0.0f;
#endif
tg = normalize(curvetangent(isect->u, p[0], p[1], p[2], p[3]));
if(kernel_data.curve.curveflags & CURVE_KN_RIBBONS) {
tg = normalize(curvetangent(isect->u, p[0], p[1], p[2], p[3]));
sd->Ng = normalize(-(D - tg * (dot(tg, D))));
}
else {
@ -950,7 +951,6 @@ ccl_device_inline float3 bvh_curve_refine(KernelGlobals *kg, ShaderData *sd, con
float gd = isect->v;
if(gd != 0.0f) {
tg = normalize(curvetangent(isect->u, p[0], p[1], p[2], p[3]));
sd->Ng = sd->Ng - gd * tg;
sd->Ng = normalize(sd->Ng);
}