59 lines
1.8 KiB
GDScript
59 lines
1.8 KiB
GDScript
extends Node2D
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@export var render_width: int = 1920
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@export var render_height: int = 1080
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@export var decay_factor: float = 0.95
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@onready var view := $View
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@onready var pass_viewport := $SubViewport
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@onready var pass2_viewport := $SubViewport2
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@onready var agent_shader: ShaderMaterial = $SubViewport/Pass.material
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@onready var trail_shader: ShaderMaterial = $SubViewport2/Pass.material
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const MAX_TEXTURES: int = 2
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var next_texture: int = 0
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var frame_count: int = 0
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func _ready():
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RenderingServer.call_on_render_thread(_initialize_render.bind(render_width, render_height))
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func _process(_delta: float) -> void:
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next_texture = (next_texture + 1) % MAX_TEXTURES
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RenderingServer.call_on_render_thread(
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_render_process.bind(next_texture, frame_count, decay_factor)
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)
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frame_count = frame_count + 1
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# Below is for rendering
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var rd: RenderingDevice = null
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var sim_texture: Texture2D = null
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func _create_initial_sim_texture(width: int, height: int) -> ImageTexture:
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var sim_image := Image.create_empty(width, height, false, Image.FORMAT_RGBF)
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sim_texture = ImageTexture.create_from_image(sim_image)
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return sim_texture
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func _initialize_render(width: int, height: int) -> void:
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rd = RenderingServer.get_rendering_device()
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trail_shader.set_shader_parameter("sim_texture", pass_viewport.get_texture().get_rid())
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trail_shader.set_shader_parameter("decay_factor", decay_factor)
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func _render_process(next_texture: int, frame_count: int, decay_factor: float) -> void:
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if frame_count > 0:
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agent_shader.set_shader_parameter("sim_texture", pass2_viewport.get_texture().get_rid())
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trail_shader.set_shader_parameter("decay_factor", decay_factor)
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trail_shader.set_shader_parameter("sim_texture", pass_viewport.get_texture().get_rid())
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# agent_shader.set_shader_parameter("sim_texture", pass2_viewport.get_texture().get_rid())
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