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.

intern/cycles/render/osl.cpp

@@ -100,7 +100,7 @@ void OSLShaderManager::device_update(Device *device, DeviceScene *dscene, Scene
 
 		OSLCompiler compiler((void*)this, (void*)ss, scene->image_manager);
 		compiler.background = (shader == scene->shaders[scene->default_background]);
-		compiler.compile(og, shader);
+		compiler.compile(scene, og, shader);
 
 		if(shader->use_mis && shader->has_surface_emission)
 			scene->light_manager->need_update = true;
@@ -573,6 +573,10 @@ void OSLCompiler::add(ShaderNode *node, const char *name, bool isfilepath)
 	if(node->has_object_dependency()) {
 		current_shader->has_object_dependency = true;
 	}
+
+	if(node->has_integrator_dependency()) {
+		current_shader->has_integrator_dependency = true;
+	}
 }
 
 void OSLCompiler::parameter(const char *name, float f)
@@ -788,7 +792,7 @@ OSL::ShadingAttribStateRef OSLCompiler::compile_type(Shader *shader, ShaderGraph
 	return group;
 }
 
-void OSLCompiler::compile(OSLGlobals *og, Shader *shader)
+void OSLCompiler::compile(Scene *scene, OSLGlobals *og, Shader *shader)
 {
 	if(shader->need_update) {
 		ShaderGraph *graph = shader->graph;
@@ -800,9 +804,16 @@ void OSLCompiler::compile(OSLGlobals *og, Shader *shader)
 				shader->graph_bump = shader->graph->copy();
 
 		/* finalize */
-		shader->graph->finalize(false, true);
-		if(shader->graph_bump)
-			shader->graph_bump->finalize(true, true);
+		shader->graph->finalize(scene,
+		                        false,
+		                        true,
+		                        shader->has_integrator_dependency);
+		if(shader->graph_bump) {
+			shader->graph_bump->finalize(scene,
+			                             true,
+			                             true,
+			                             shader->has_integrator_dependency);
+		}
 
 		current_shader = shader;
 
@@ -815,6 +826,7 @@ void OSLCompiler::compile(OSLGlobals *og, Shader *shader)
 		shader->has_displacement = false;
 		shader->has_heterogeneous_volume = false;
 		shader->has_object_dependency = false;
+		shader->has_integrator_dependency = false;
 
 		/* generate surface shader */
 		if(shader->used && graph && output->input("Surface")->link) {