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Fix T40962: Ashikhmen Shirley shader fireflies

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Sergey Sharybin 2014-08-19 20:58:58 +06:00
parent 2184ac8c9d
commit 7bc87a372e
1 changed files with 1 additions and 1 deletions
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intern/cycles/kernel/closure/bsdf_ashikhmin_shirley.h
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@ -77,7 +77,7 @@ ccl_device float3 bsdf_ashikhmin_shirley_eval_reflect(const ShaderClosure *sc, c
NdotI = fmaxf(NdotI, 1e-6f);
NdotO = fmaxf(NdotO, 1e-6f);
float3 H = normalize(omega_in + I);
float HdotI = fmaxf(dot(H, I), 1e-6f);
float HdotI = fmaxf(fabsf(dot(H, I)), 1e-6f);
float HdotN = fmaxf(dot(H, N), 1e-6f);
float pump = 1.0f / fmaxf(1e-6f, (HdotI*fmaxf(NdotO, NdotI))); /* pump from original paper (first derivative disc., but cancels the HdotI in the pdf nicely) */