Fix T62145: Geometry.Backface Node Renders Black

The NODE_GROUP_LEVEL of the Geometry node should be bumped to 1
when Backface is connected. Backface uses `NODE_LIGHT_PATH` that
is part of NODE_GROUP_LEVEL1, the rest of the geometry ndoe is
NODE_GROUP_LEVEL_0.

1 files changed, 1 insertions, 0 deletions

diff --git a/intern/cycles/render/nodes.h b/intern/cycles/render/nodes.h
index 429a1130a9b..5c27929719a 100644
--- a/intern/cycles/render/nodes.h
+++ b/intern/cycles/render/nodes.h
@@ -666,6 +666,7 @@ public:
 	void attributes(Shader *shader, AttributeRequestSet *attributes);
 	bool has_attribute_dependency() { return true; }
 	bool has_spatial_varying() { return true; }
+	int get_group();
 
 	float3 normal_osl;
 };