fix thin glass

zenustech · Oct 16, 2024 · b3ebb77 · b3ebb77
1 parent 33862f0
commit b3ebb77
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/zenovis/xinxinoptix/DisneyBSDF.h b/zenovis/xinxinoptix/DisneyBSDF.h
@@ -499,8 +499,10 @@ namespace DisneyBSDF{
             } else {
               if(thin)
               {
-                vec3 t = sqrt(mix(mat.transColor, mat.diffractColor, mat.diffraction)) * glassWt;
+                vec3 t = sqrt(mix(mat.transColor, mat.diffractColor, mat.diffraction)) * glassWt / abs(wi.z);
                 float tmpPdf = (reflectance==false)? 0.0f:1.0f;
+                float F = BRDFBasics::DielectricFresnel(abs(wo.z), entering?mat.ior:1.0/mat.ior);
+                tmpPdf *= (1.0f-F);
                 t = t * (tmpPdf>0.0f?1.0f:0.0f);
                 tterm = tterm + t;
                 f = f + t;