Code refactored to incorporate #6

addons/ShaderLib_v2_2_4/Procedural/HeightToNormal.gd

@@ -0,0 +1,65 @@
+@tool
+class_name VisualShaderNodeProceduralHeightToNormal extends ShaderLib
+
+func _get_name() -> String:
+	return "HeightToNormal"
+
+func _get_category() -> String:
+	return "Procedural"
+
+func _get_description() -> String:
+	return "Generates a normal map from a height map."
+
+func _get_return_icon_type() -> PortType:
+	return PORT_TYPE_VECTOR_3D
+
+func _get_input_port_count() -> int:
+	return 3
+
+func _get_input_port_name(port: int) -> String:
+	match port:
+		0:
+			return "height map"
+		1:
+			return "uv"
+		2:
+			return "bump strength"
+	return ""
+
+func _get_input_port_type(port: int) -> PortType:
+	match port:
+		0:
+			return PORT_TYPE_SAMPLER
+		1:
+			return PORT_TYPE_VECTOR_2D
+		_:
+			return PORT_TYPE_SCALAR
+
+func _get_input_port_default_value(port: int) -> Variant:
+	match port:
+		2:
+			return 8.0
+		_:
+			return null
+
+func _get_output_port_count() -> int:
+	return 1
+
+func _get_output_port_name(port: int) -> String:
+	return "normal"
+
+func _get_output_port_type(port: int) -> PortType:
+	return PORT_TYPE_VECTOR_3D
+
+func _get_global_code(mode: Shader.Mode) -> String:
+	return "#include \"res://addons/ShaderLib_%s/Procedural/Procedural.gdshaderinc\"" % [version]
+
+func _get_code(input_vars: Array[String], output_vars: Array[String], mode: Shader.Mode, type: VisualShader.Type) -> String:
+	var uv: String = "UV"
+	if input_vars[1]:
+		uv = input_vars[1]
+
+	var sampler: String = input_vars[0]
+	var bump: String = input_vars[2]
+
+	return output_vars[0] + " = heigth_to_normal(%s, %s, %s);" % [sampler, uv, bump]