1 files changed, 44 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/closure_type_lib.glsl b/source/blender/draw/engines/eevee/shaders/closure_type_lib.glsl
index fefc8743691..9022a9d3130 100644
--- a/source/blender/draw/engines/eevee/shaders/closure_type_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/closure_type_lib.glsl
@@ -30,6 +30,50 @@ struct Closure {
 #  endif
 
 #endif
+
+/* Metal Default Constructor - Requred for C++ constructor syntax. */
+#ifdef GPU_METAL
+  inline Closure() = default;
+#  ifdef VOLUMETRICS
+  /* Explicit Closure constructors -- To support GLSL syntax */
+  inline Closure(vec3 in_absorption, vec3 in_scatter, vec3 in_emission, float in_anisotropy)
+      : absorption(in_absorption),
+        scatter(in_scatter),
+        emission(in_emission),
+        anisotropy(in_anisotropy)
+  {
+  }
+#  else
+  /* Explicit Closure constructors -- To support GLSL syntax */
+  inline Closure(vec3 in_radiance,
+                 vec3 in_transmittance,
+                 float in_holdout,
+                 vec4 in_ssr_data,
+                 vec2 in_ssr_normal,
+                 int in_flag
+#    ifdef USE_SSS
+                 ,
+                 vec3 in_sss_irradiance,
+                 vec3 in_sss_albedo,
+                 float in_sss_radius
+#    endif /* USE_SSS */
+                 )
+      : radiance(in_radiance),
+        transmittance(in_transmittance),
+        holdout(in_holdout),
+        ssr_data(in_ssr_data),
+        ssr_normal(in_ssr_normal),
+        flag(in_flag)
+#    ifdef USE_SSS
+        ,
+        sss_irradiance(in_sss_irradiance),
+        sss_albedo(in_sss_albedo),
+        sss_radius(in_sss_radius)
+#    endif /* USE_SSS */
+  {
+  }
+#  endif   /* VOLUMETRICS */
+#endif     /* GPU_METAL */
 };
 
 #ifndef GPU_METAL