tool extends Node class_name MMGenBase """ Base class for texture generators, that defines their API """ class OutputPort: var generator : MMGenBase = null var output_index : int = 0 func _init(g : MMGenBase, o : int): generator = g output_index = o func to_str(): return generator.name+"("+str(output_index)+")" var position : Vector2 = Vector2(0, 0) var model = null var parameters = {} func _ready(): init_parameters() func init_parameters(): for p in get_parameter_defs(): if !parameters.has(p.name): if p.has("default"): parameters[p.name] = MMType.deserialize_value(p.default) else: print("No default value for parameter "+p.name) func get_seed(): return 0 func get_type(): return "generic" func get_type_name(): return "Unnamed" func get_parameter_defs(): return [] func set_parameter(n : String, v): parameters[n] = v func get_input_defs(): return [] func get_output_defs(): return [] func get_source(input_index : int): return get_parent().get_port_source(name, input_index) func get_input_shader(input_index : int): var source = get_source(input_index) if source != null: return source.get_shader() func get_shader(output_index : int, context): return get_shader_code("UV", output_index, context); # this will need an output index for switch func get_globals(): var list = [] for i in range(10): var source = get_source(i) if source != null: var source_list = source.generator.get_globals() for g in source_list: if list.find(g) == -1: list.append(g) return list func render(output_index : int, renderer : MMGenRenderer, size : int): var context : MMGenContext = MMGenContext.new(renderer) var source = get_shader_code("UV", output_index, context) while source is GDScriptFunctionState: source = yield(source, "completed") if source == null: return false var shader : String = renderer.generate_shader(source) var status = renderer.render_shader(shader, source.textures, size) while status is GDScriptFunctionState: status = yield(status, "completed") return status func get_shader_code(uv : String, output_index : int, context : MMGenContext): var rv = _get_shader_code(uv, output_index, context) while rv is GDScriptFunctionState: rv = yield(rv, "completed") if rv != null: if !rv.has("f"): if rv.has("rgb"): rv.f = "(dot("+rv.rgb+", vec3(1.0))/3.0)" elif rv.has("rgba"): rv.f = "(dot("+rv.rgba+".rgb, vec3(1.0))/3.0)" else: rv.f = "0.0" if !rv.has("rgb"): if rv.has("rgba"): rv.rgb = rv.rgba+".rgb" else: rv.rgb = "vec3("+rv.f+")" if !rv.has("rgba"): rv.rgba = "vec4("+rv.rgb+", 1.0)" rv.globals = get_globals() return rv func _get_shader_code(uv : String, output_index : int, context : MMGenContext): return null func _serialize(data): print("cannot save "+name) return data func serialize(): var rv = { name=name, parameters={}, node_position={ x=position.x, y=position.y } } for p in parameters.keys(): rv.parameters[p] = MMType.serialize_value(parameters[p]) if model != null: rv.type = model else: rv = _serialize(rv) return rv