1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/render/intern/include/volumetric.h b/source/blender/render/intern/include/volumetric.h
index 37b1bd7ca29..70012058c34 100644
--- a/source/blender/render/intern/include/volumetric.h
+++ b/source/blender/render/intern/include/volumetric.h
@@ -1,4 +1,4 @@
-/**
+/*
  *
  * ***** BEGIN GPL LICENSE BLOCK *****
  *
@@ -26,6 +26,10 @@
  * ***** END GPL LICENSE BLOCK *****
  */
 
+struct Isect;
+struct ShadeInput;
+struct ShadeResult;
+
 float vol_get_density(struct ShadeInput *shi, float *co);
 void vol_get_scattering(ShadeInput *shi, float *scatter_col, float *co_);