Commit: d68729300ee557e90a8e7e4be6eb8ef98db80fe2
Author: Pascal Schoen
Date: Tue Jul 26 12:23:13 2016 +0200
Branches: cycles_disney_brdf
https://developer.blender.org/rBd68729300ee557e90a8e7e4be6eb8ef98db80fe2
Better calculation of the Disney diffuse part
Now the values for NdotL und NdotV are clamped to 0.0f for a better look
when using normal maps
===================================================================
M intern/cycles/kernel/closure/bsdf_disney_diffuse.h
===================================================================
diff --git a/intern/cycles/kernel/closure/bsdf_disney_diffuse.h
b/intern/cycles/kernel/closure/bsdf_disney_diffuse.h
index 463fcf3..ac5032f 100644
--- a/intern/cycles/kernel/closure/bsdf_disney_diffuse.h
+++ b/intern/cycles/kernel/closure/bsdf_disney_diffuse.h
@@ -40,8 +40,8 @@ CCL_NAMESPACE_BEGIN
ccl_device float3 calculate_disney_diffuse_brdf(const ShaderClosure *sc,
float3 N, float3 V, float3 L, float3 H, float *pdf)
{
- float NdotL = dot(N, L);
- float NdotV = dot(N, V);
+ float NdotL = max(dot(N, L), 0.0f);
+ float NdotV = max(dot(N, V), 0.0f);
if (NdotL < 0 || NdotV < 0) {
*pdf = 0.0f;
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