Cycles: Fix filter glossy being broken after recent changes

Basically we can not use sharp closure as a substitude when filter glossy is
used. This is because we can not blur sharp reflection/refraction.

This is quite quick and not really clean implementation. Not really happy
with manual handling of original settings, but this is as good as we can do
in the quick patch. It's a good acknowledgment and we now can re-consider
some aspects of graph simplification to make such cases more natively
supported.

P.S. This failure would have been shown by our regression tests, so please,
bother a bit to run Cycles's test sweep before doing such optimizations.

1 files changed, 10 insertions, 6 deletions

diff --git a/intern/cycles/render/nodes.h b/intern/cycles/render/nodes.h
index 2b205c44d42..4f4061286cb 100644
--- a/intern/cycles/render/nodes.h
+++ b/intern/cycles/render/nodes.h
@@ -24,6 +24,7 @@
 CCL_NAMESPACE_BEGIN
 
 class ImageManager;
+class Scene;
 class Shader;
 
 /* Texture Mapping */
@@ -310,9 +311,10 @@ class GlossyBsdfNode : public BsdfNode {
 public:
 	SHADER_NODE_CLASS(GlossyBsdfNode)
 
-	void optimize();
+	void optimize(Scene *scene);
+	bool has_integrator_dependency();
 
-	ustring distribution;
+	ustring distribution, distribution_orig;
 	static ShaderEnum distribution_enum;
 };
 
@@ -320,9 +322,10 @@ class GlassBsdfNode : public BsdfNode {
 public:
 	SHADER_NODE_CLASS(GlassBsdfNode)
 
-	void optimize();
+	void optimize(Scene *scene);
+	bool has_integrator_dependency();
 
-	ustring distribution;
+	ustring distribution, distribution_orig;
 	static ShaderEnum distribution_enum;
 };
 
@@ -330,9 +333,10 @@ class RefractionBsdfNode : public BsdfNode {
 public:
 	SHADER_NODE_CLASS(RefractionBsdfNode)
 
-	void optimize();
+	void optimize(Scene *scene);
+	bool has_integrator_dependency();
 
-	ustring distribution;
+	ustring distribution, distribution_orig;
 	static ShaderEnum distribution_enum;
 };