344 lines
10 KiB
GDScript
344 lines
10 KiB
GDScript
tool
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extends Node
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class_name MMGenBase
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"""
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Base class for texture generators, that defines their API
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"""
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signal parameter_changed(n, v)
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signal rendering_time(t)
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const DEFAULT_GENERATED_SHADER : Dictionary = { defs="", code="", textures={}, type="f", f="0.0" }
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class InputPort:
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var generator : MMGenBase = null
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var input_index : int = 0
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func _init(g : MMGenBase, i : int) -> void:
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generator = g
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input_index = i
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func to_str() -> String:
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return generator.name+".in("+str(input_index)+")"
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class OutputPort:
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var generator : MMGenBase = null
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var output_index : int = 0
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func _init(g : MMGenBase, o : int) -> void:
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generator = g
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output_index = o
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func to_str() -> String:
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return generator.name+".out("+str(output_index)+")"
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var position : Vector2 = Vector2(0, 0)
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var model = null
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var parameters = {}
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var seed_locked : bool = false
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var seed_value : int = 0
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func _ready() -> void:
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init_parameters()
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func _post_load() -> void:
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pass
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func get_hier_name() -> String:
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if get_parent().is_class("MMGenBase"):
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return get_parent().get_hier_name()+"/"+name
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return name
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func accept_float_expressions() -> bool:
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return true
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func can_be_deleted() -> bool:
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return true
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func toggle_editable() -> bool:
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return false
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func is_template() -> bool:
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return model != null
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func get_template_name() -> bool:
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return model
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func is_editable() -> bool:
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return false
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func get_description() -> String:
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return ""
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func has_randomness() -> bool:
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return false
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func get_seed() -> int:
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if !seed_locked:
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var s : int = ((int(position.x) * 0x1f1f1f1f) ^ int(position.y)) % 65536
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if get_parent().get("transmits_seed") != null and get_parent().transmits_seed:
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s += get_parent().get_seed()
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return s
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else:
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return seed_value
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func toggle_lock_seed() -> bool:
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if !seed_locked:
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seed_value = get_seed()
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seed_locked = !seed_locked
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return seed_locked
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func is_seed_locked() -> bool:
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return seed_locked
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func init_parameters() -> void:
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for p in get_parameter_defs():
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if !parameters.has(p.name):
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if p.has("default"):
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parameters[p.name] = MMType.deserialize_value(p.default)
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if p.type == "size":
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parameters[p.name] -= p.first
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else:
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print("No default value for parameter "+p.name)
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func set_position(p) -> void:
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position = p
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if has_randomness() and !is_seed_locked() and is_inside_tree():
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get_tree().call_group("preview", "on_float_parameters_changed", { "seed_o"+str(get_instance_id()): get_seed() })
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func get_type() -> String:
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return "generic"
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func get_type_name() -> String:
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return "Unnamed"
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func get_parameter_defs() -> Array:
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return []
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func get_parameter_def(param_name : String) -> Dictionary:
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var parameter_defs = get_parameter_defs()
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for p in parameter_defs:
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if p.name == param_name:
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return p
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return {}
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func get_parameter(n : String):
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if parameters.has(n):
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return parameters[n]
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else:
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var parameter_def = get_parameter_def(n)
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return parameter_def.default
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class CustomGradientSorter:
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static func compare(a, b) -> bool:
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return a.pos < b.pos
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func set_parameter(n : String, v) -> void:
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var old_value = parameters[n] if parameters.has(n) else null
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parameters[n] = v
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emit_signal("parameter_changed", n, v)
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if is_inside_tree():
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var parameter_def : Dictionary = get_parameter_def(n)
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if parameter_def.has("type"):
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if parameter_def.type == "float" and v is float and old_value is float:
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var parameter_name = "p_o"+str(get_instance_id())+"_"+n
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get_tree().call_group("preview", "on_float_parameters_changed", { parameter_name:v })
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return
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elif parameter_def.type == "color":
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var parameter_changes = {}
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for f in [ "r", "g", "b", "a" ]:
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var parameter_name = "p_o"+str(get_instance_id())+"_"+n+"_"+f
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parameter_changes[parameter_name] = v[f]
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get_tree().call_group("preview", "on_float_parameters_changed", parameter_changes)
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return
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elif parameter_def.type == "gradient":
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if old_value is MMGradient and v is MMGradient and old_value != null and v.interpolation == old_value.interpolation and v.points.size() == old_value.points.size():
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old_value.sort()
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v.sort()
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var parameter_changes = {}
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for i in range(old_value.points.size()):
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if v.points[i].v != old_value.points[i].v:
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var parameter_name = "p_o%s_%s_%d_pos" % [ str(get_instance_id()), n, i ]
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parameter_changes[parameter_name] = v.points[i].v
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for f in [ "r", "g", "b", "a" ]:
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if v.points[i].c[f] != old_value.points[i].c[f]:
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var parameter_name = "p_o%s_%s_%d_%s" % [ str(get_instance_id()), n, i, f ]
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parameter_changes[parameter_name] = v.points[i].c[f]
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get_tree().call_group("preview", "on_float_parameters_changed", parameter_changes)
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return
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all_sources_changed()
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func notify_output_change(output_index : int) -> void:
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var targets = get_targets(output_index)
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for target in targets:
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target.generator.source_changed(target.input_index)
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emit_signal("parameter_changed", "__output_changed__", output_index)
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func source_changed(input_index : int) -> void:
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emit_signal("parameter_changed", "__input_changed__", input_index)
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for i in range(get_output_defs().size()):
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notify_output_change(i)
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func all_sources_changed() -> void:
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for input_index in get_input_defs().size():
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emit_signal("parameter_changed", "__input_changed__", input_index)
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for i in range(get_output_defs().size()):
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notify_output_change(i)
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func get_input_defs() -> Array:
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return []
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func get_output_defs() -> Array:
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return []
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func get_source(input_index : int) -> OutputPort:
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return get_parent().get_port_source(name, input_index)
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func get_targets(output_index : int) -> Array:
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var parent = get_parent()
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if parent != null and parent.has_method("get_port_targets"):
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return parent.get_port_targets(name, output_index)
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return []
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# get the list of outputs that depend on the input whose index is passed as parameter
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func follow_input(_input_index : int) -> Array:
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var rv = []
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for i in range(get_output_defs().size()):
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rv.push_back(OutputPort.new(self, i))
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return rv
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func get_input_shader(input_index : int) -> Dictionary:
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var source = get_source(input_index)
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if source != null:
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return source.get_shader()
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return {}
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func get_shader(output_index : int, context) -> Dictionary:
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return get_shader_code("UV", output_index, context)
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static func generate_preview_shader(src_code, type, main_fct = "void fragment() { COLOR = preview_2d(UV); }") -> String:
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var code
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code = "shader_type canvas_item;\n"
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code += "render_mode blend_disabled;\n"
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code += "uniform float preview_size = 64;\n"
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code += "uniform sampler2D mesh_inv_uv_tex;\n"
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code += "uniform vec3 mesh_aabb_position;\n"
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code += "uniform vec3 mesh_aabb_size;\n"
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code += mm_renderer.common_shader
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code += "\n"
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if src_code.has("textures"):
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for t in src_code.textures.keys():
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code += "uniform sampler2D "+t+";\n"
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if src_code.has("globals"):
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for g in src_code.globals:
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code += g
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var shader_code = src_code.defs
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if src_code.has(type):
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var preview_code : String = mm_io_types.types[type].preview
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preview_code = preview_code.replace("$(code)", src_code.code)
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preview_code = preview_code.replace("$(value)", src_code[type])
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shader_code += preview_code
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#print("GENERATED SHADER:\n"+shader_code)
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code += shader_code
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code += main_fct
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return code
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func render(object: Object, output_index : int, size : int, preview : bool = false) -> Object:
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var context : MMGenContext = MMGenContext.new()
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var source = get_shader_code("uv", output_index, context)
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while source is GDScriptFunctionState:
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source = yield(source, "completed")
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if source.empty():
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source = DEFAULT_GENERATED_SHADER
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var shader : String
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if preview:
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var output_type = "rgba"
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var outputs = get_output_defs()
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if outputs.size() > output_index:
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output_type = outputs[output_index].type
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shader = generate_preview_shader(source, output_type)
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else:
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shader = mm_renderer.generate_shader(source)
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var renderer = mm_renderer.request(object)
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while renderer is GDScriptFunctionState:
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renderer = yield(renderer, "completed")
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renderer = renderer.render_shader(object, shader, source.textures, size)
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while renderer is GDScriptFunctionState:
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renderer = yield(renderer, "completed")
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return renderer
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func get_shader_code(uv : String, output_index : int, context : MMGenContext) -> Dictionary:
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var rv = _get_shader_code(uv, output_index, context)
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while rv is GDScriptFunctionState:
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rv = yield(rv, "completed")
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if rv.has("type") and mm_io_types.types.has(rv.type):
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if mm_io_types.types[rv.type].has("convert"):
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for c in mm_io_types.types[rv.type].convert:
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if !rv.has(c.type):
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var expr = c.expr.replace("$(value)", rv[rv.type])
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rv[c.type] = expr
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else:
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print("Missing type for node ")
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print(rv)
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return rv
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func _get_shader_code(_uv, _output_index, _context) -> Dictionary:
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return {}
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func _serialize(data: Dictionary) -> Dictionary:
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print("cannot save "+name)
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return data
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func _serialize_data(data: Dictionary) -> Dictionary:
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return data
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func serialize() -> Dictionary:
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var rv = { name=name, type=get_type(), parameters={}, node_position={ x=position.x, y=position.y } }
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for p in get_parameter_defs():
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if parameters.has(p.name):
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rv.parameters[p.name] = MMType.serialize_value(parameters[p.name])
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elif p.has("default"):
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rv.parameters[p.name] = p.default
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if seed_locked:
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rv.seed_value = seed_value
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if model != null:
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rv.type = model
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else:
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rv = _serialize(rv)
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rv = _serialize_data(rv)
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return rv
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func _deserialize(_data : Dictionary) -> void:
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pass
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func deserialize(data : Dictionary) -> void:
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_deserialize(data)
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if data.has("name"):
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name = data.name
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if data.has("node_position"):
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position.x = data.node_position.x
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position.y = data.node_position.y
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if data.has("parameters"):
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for p in data.parameters.keys():
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set_parameter(p, MMType.deserialize_value(data.parameters[p]))
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else:
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for p in get_parameter_defs():
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if data.has(p.name) and p.name != "type":
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set_parameter(p.name, MMType.deserialize_value(data[p.name]))
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if data.has("seed_value"):
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seed_locked = true
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seed_value = data.seed_value
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else:
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seed_locked = false
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_post_load()
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static func define_shader_float_parameters(code : String, material : ShaderMaterial) -> void:
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var regex = RegEx.new()
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regex.compile("uniform\\s+(\\w+)\\s+([\\w_\\d]+)\\s*=\\s*([^;]+);")
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for p in regex.search_all(code):
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material.set_shader_param(p.strings[2], float(p.strings[3]))
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