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Fix T90423: black pixels after shadow terminator geometry offset 

Solves an error in the principled diffuse BSDF, where it was not correctly
rejecting directions outside the hemisphere.

Differential Revision: https://developer.blender.org/D12283
This commit is contained in:
Mikhail Matrosov 2021-08-23 15:13:35 +02:00 committed by Brecht Van Lommel
parent 27f138f4c8
commit cd118c5581
1 changed files with 3 additions and 3 deletions
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6
intern/cycles/kernel/closure/bsdf_principled_diffuse.h
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@ -36,10 +36,10 @@ static_assert(sizeof(ShaderClosure) >= sizeof(PrincipledDiffuseBsdf),
ccl_device float3 calculate_principled_diffuse_brdf(
const PrincipledDiffuseBsdf *bsdf, float3 N, float3 V, float3 L, float3 H, float *pdf)
{
float NdotL = max(dot(N, L), 0.0f);
float NdotV = max(dot(N, V), 0.0f);
float NdotL = dot(N, L);
float NdotV = dot(N, V);
if (NdotL < 0 || NdotV < 0) {
if (NdotL <= 0 || NdotV <= 0) {
*pdf = 0.0f;
return make_float3(0.0f, 0.0f, 0.0f);
}