Cycles OSL: fix mistake in recent refactoring, parameters are not set before setup.

intern/cycles/kernel/osl/bsdf_diffuse_ramp.cpp

@@ -50,6 +50,9 @@ public:
 	float3 fcolors[8];
 
 	DiffuseRampClosure() : CBSDFClosure(LABEL_DIFFUSE)
+	{}
+
+	void setup()
 	{
 		sc.prim = this;
 		m_shaderdata_flag = bsdf_diffuse_ramp_setup(&sc);

intern/cycles/kernel/osl/bsdf_phong_ramp.cpp

@@ -49,6 +49,9 @@ public:
 	float3 fcolors[8];
 
 	PhongRampClosure() : CBSDFClosure(LABEL_GLOSSY)
+	{}
+
+	void setup()
 	{
 		sc.prim = this;
 		m_shaderdata_flag = bsdf_phong_ramp_setup(&sc);

intern/cycles/kernel/osl/osl_bssrdf.cpp

@@ -52,6 +52,9 @@ using namespace OSL;
 class CubicBSSRDFClosure : public CBSSRDFClosure {
 public:
 	CubicBSSRDFClosure()
+	{}
+
+	void setup()
 	{
 		sc.type = CLOSURE_BSSRDF_CUBIC_ID;
 		sc.data0 = fabsf(average(radius));
@@ -90,6 +93,9 @@ CCLOSURE_PREPARE(closure_bssrdf_cubic_prepare, CubicBSSRDFClosure)
 class GaussianBSSRDFClosure : public CBSSRDFClosure {
 public:
 	GaussianBSSRDFClosure()
+	{}
+
+	void setup()
 	{
 		sc.type = CLOSURE_BSSRDF_GAUSSIAN_ID;
 		sc.data0 = fabsf(average(radius));

intern/cycles/kernel/osl/osl_closures.h

@@ -96,8 +96,9 @@ public:
 		AmbientOcclusion, ///< Ambient occlusion
 	};
 
-	CClosurePrimitive (Category category_) : category (category_) { }
+	CClosurePrimitive (Category category_) : category (category_) {}
 	virtual ~CClosurePrimitive() {}
+	virtual void setup() {}
 
 	Category category;
 };
@@ -110,7 +111,7 @@ public:
 
 	CBSDFClosure(int scattering) : CClosurePrimitive(BSDF),
 	  m_scattering_label(scattering), m_shaderdata_flag(0)
-	{ }
+	{}
 
 	int scattering() const { return m_scattering_label; }
 	int shaderdata_flag() const { return m_shaderdata_flag; }
@@ -135,6 +136,10 @@ protected:
 class Upper##Closure : public CBSDFClosure { \
 public: \
 	Upper##Closure() : CBSDFClosure(TYPE) \
+	{ \
+	} \
+\
+	void setup() \
 	{ \
 		sc.prim = NULL; \
 		m_shaderdata_flag = bsdf_##lower##_setup(&sc); \

intern/cycles/kernel/osl/osl_shader.cpp

@@ -156,6 +156,8 @@ static void flatten_surface_closure_tree(ShaderData *sd, int path_flag,
 			sc.weight = weight;
 #endif
 
+			prim->setup();
+
 			switch (prim->category) {
 				case CClosurePrimitive::BSDF: {
 					CBSDFClosure *bsdf = (CBSDFClosure *)prim;
@@ -395,6 +397,8 @@ static void flatten_volume_closure_tree(ShaderData *sd,
 			sc.weight = weight;
 #endif
 
+			prim->setup();
+
 			switch (prim->category) {
 				case CClosurePrimitive::Volume: {
 					/* sample weight */