Add PointLight2D and DirectionalLight2D benchmarks (#60)

Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>

benchmarks/rendering/lights_2d.gd

@@ -0,0 +1,162 @@
+extends Benchmark
+
+# Benchmarks 2D lights.
+enum LIGHT_TYPE {
+	POINT_2D,
+	DIRECTIONAL_2D,
+}
+
+func _init() -> void:
+	test_render_cpu = true
+	test_render_gpu = true
+
+
+# Used to rotate lights to update rendering.
+class Rotater extends Node2D:
+	var speed := 1.0
+	func _init(_speed: float):
+		speed = _speed
+	func _process(delta: float) -> void:
+		rotation += speed * delta
+
+class TestLights2D extends Node2D:
+	var cam := Camera2D.new()
+
+	var light_type := LIGHT_TYPE.POINT_2D
+	var light_count := 1
+	var use_shadows := false
+	var sprite_count := 25
+
+	func _init(settings: Dictionary) -> void:
+		light_type = settings.get("light_type", LIGHT_TYPE.POINT_2D)
+		use_shadows = settings.get("shadows", false)
+
+	func _ready() -> void:
+		create_backgrounds()
+		create_sprites()
+
+		match light_type:
+			LIGHT_TYPE.POINT_2D:
+				create_point_light_2d()
+			LIGHT_TYPE.DIRECTIONAL_2D:
+				create_directional_light_2d()
+
+		add_child(cam)
+
+	func create_backgrounds() -> void:
+		var ss := get_viewport_rect().size
+		var top_left_pos := Vector2(ss.x / 2, ss.y / 2) * -1
+		var rows := 4
+		var cols := 3
+
+		# Calculate the size of each color rect based on the number of rows and columns.
+		var rect_width := ss.x / cols
+		var rect_height := ss.y / rows
+
+		# Create color rect objects in a grid.
+		for row in rows:
+			for col in cols:
+				var background := ColorRect.new()
+				background.color = Color(0.15, 0.15, 0.15)
+				background.size = Vector2(rect_width, rect_height)
+				background.position = top_left_pos + Vector2(rect_width * col, rect_height * row)
+				add_child(background)
+
+	func create_sprites() -> void:
+		var viewport_size := get_viewport_rect().size
+		var sprite_size := 150
+
+		var grid_rows := 4
+		var grid_cols := 5
+		var horizontal_spacing := (viewport_size.x - (grid_cols * sprite_size)) / (grid_cols + 1)
+		var vertical_spacing := (viewport_size.y - (grid_rows * sprite_size)) / (grid_rows + 1)
+
+		# Place color rects in a grid with variance in position.
+		for row in grid_rows:
+			for col in grid_cols:
+				var s := ColorRect.new()
+				s.size = Vector2(sprite_size, sprite_size)
+				s.color = Color(0.4, 0.4, 0.4)
+
+				# Introduce random offsets for variance in position.
+				var variance := 50
+				var random_offset_x := randf_range(-variance, variance)
+				var random_offset_y := randf_range(-variance, variance)
+
+				# Calculate the position of each color rect in the grid.
+				var rect_position := Vector2(
+						(col + 1) * horizontal_spacing + col * sprite_size + random_offset_x,
+						(row + 1) * vertical_spacing + row * sprite_size + random_offset_y
+				)
+
+				s.position = -viewport_size / 2 + rect_position
+
+				if use_shadows:
+					var light_occluder := LightOccluder2D.new()
+					light_occluder.occluder = OccluderPolygon2D.new()
+					light_occluder.occluder.polygon = PackedVector2Array([
+							Vector2(0, 0),
+							Vector2(sprite_size, 0),
+							Vector2(sprite_size, sprite_size),
+							Vector2(0, sprite_size)
+					])
+					s.add_child(light_occluder)
+
+				add_child(s)
+
+	func create_point_light_2d() -> void:
+		var viewport_size := get_viewport_rect().size
+		var grid_rows := 5
+		var grid_cols := 10
+		var light_size := 150
+		var horizontal_spacing := (viewport_size.x - (grid_cols * light_size)) / (grid_cols + 1)
+		var vertical_spacing := (viewport_size.y - (grid_rows * light_size)) / (grid_rows + 1)
+
+		# Place color rects in a grid with variance in position.
+		for row in grid_rows:
+			for col in grid_cols:
+				var light := PointLight2D.new()
+				light.texture = preload("res://supplemental/2d_point_light_texture.png")
+				light.shadow_enabled = use_shadows
+				light.energy = 5
+
+				# Introduce random offsets for variance in position.
+				var variance := 40
+				var random_offset := Vector2(
+						randf_range(-variance, variance),
+						randf_range(-variance, variance)
+				)
+
+				# Calculate the position of each color rect in the grid.
+				var pos := Vector2(
+						(col + 1) * horizontal_spacing + col * light_size,
+						(row + 1) * vertical_spacing + row * light_size
+				)
+
+				var parent := Rotater.new(1)
+				parent.position = - viewport_size / 2 + Vector2(light_size, light_size) / 2 + pos
+				add_child(parent)
+
+				light.position = random_offset
+				parent.add_child(light)
+
+	func create_directional_light_2d() -> void:
+		var light := DirectionalLight2D.new()
+		light.shadow_enabled = use_shadows
+		add_child(light)
+
+
+func benchmark_directional_light_2d_without_shadows() -> Node2D:
+	return TestLights2D.new({ light_type = LIGHT_TYPE.DIRECTIONAL_2D, shadows = false })
+
+
+func benchmark_directional_light_2d_with_shadows() -> Node2D:
+	return TestLights2D.new({ light_type = LIGHT_TYPE.DIRECTIONAL_2D, shadows = true })
+
+
+func benchmark_50_point_light_2d_without_shadows() -> Node2D:
+	return TestLights2D.new({ light_type = LIGHT_TYPE.POINT_2D, shadows = false })
+
+
+func benchmark_50_point_light_2d_with_shadows() -> Node2D:
+	return TestLights2D.new({ light_type = LIGHT_TYPE.POINT_2D, shadows = true })

supplemental/2d_point_light_texture.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bi2td1w5stqjk"
+path="res://.godot/imported/2d_point_light_texture.png-5c57a7e4e37e43786e6798e9a184f512.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://supplemental/2d_point_light_texture.png"
+dest_files=["res://.godot/imported/2d_point_light_texture.png-5c57a7e4e37e43786e6798e9a184f512.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1