Fix mixing multiple cycles shaders in one material

blender/arm/material/cycles.py

@@ -204,6 +204,8 @@ def parse_shader(node: bpy.types.Node, socket: bpy.types.NodeSocket) -> Tuple[st
         'BSDF_VELVET': nodes_shader.parse_bsdfvelvet,
     }
 
+    state.reset_outs()
+
     if node.type in node_parser_funcs:
         node_parser_funcs[node.type](node, socket, state)
 

blender/arm/material/parser_state.py

@@ -64,6 +64,16 @@ class ParserState:
         self.out_opacity: floatstr = '1.0'
         self.out_emission: floatstr = '0.0'
 
+    def reset_outs(self):
+        """Reset the shader output values to their default values."""
+        self.out_basecol = 'vec3(0.8)'
+        self.out_roughness = '0.0'
+        self.out_metallic = '0.0'
+        self.out_occlusion = '1.0'
+        self.out_specular = '1.0'
+        self.out_opacity = '1.0'
+        self.out_emission = '0.0'
+
     def get_outs(self) -> Tuple[vec3str, floatstr, floatstr, floatstr, floatstr, floatstr, floatstr]:
         """Return the shader output values as a tuple."""
         return (self.out_basecol, self.out_roughness, self.out_metallic, self.out_occlusion, self.out_specular,