Fix T93418: Cycles shadow terminator Geometry Offset artifacts with translucency

Differential Revision: https://developer.blender.org/D13468
2021-12-07 18:48:41 +01:00
parent 484714992c
commit a92805bf24
1 changed files with 3 additions and 0 deletions
--- a/intern/cycles/kernel/light/sample.h
+++ b/intern/cycles/kernel/light/sample.h
@@ -200,6 +200,9 @@ ccl_device_inline float3 shadow_ray_offset(KernelGlobals kg,
    if (offset_cutoff > 0.0f) {
      float NgL = dot(Ng, L);
      float offset_amount = 0.0f;
+      if (NL < 0) {
+        NL = -NL;
+      }
      if (NL < offset_cutoff) {
        offset_amount = clamp(2.0f - (NgL + NL) / offset_cutoff, 0.0f, 1.0f);
      }