diff --git a/src/Classes/ShaderImageEffect.gd b/src/Classes/ShaderImageEffect.gd
index 2f12408f5..3d9c63d76 100644
--- a/src/Classes/ShaderImageEffect.gd
+++ b/src/Classes/ShaderImageEffect.gd
@@ -4,14 +4,8 @@ extends Reference
 signal done
 
 
-func generate_image(
-	_img: Image,
-	_shaderpath: String,
-	_params: Dictionary,
-	size: Vector2 = Global.current_project.size
-):
-	var shader = load(_shaderpath)
-	_img.unlock()
+func generate_image(img: Image, shader: Shader, params: Dictionary, size: Vector2) -> void:
+	img.unlock()
 	var viewport_texture := Image.new()
 	var vp = VisualServer.viewport_create()
 	var canvas = VisualServer.canvas_create()
@@ -27,14 +21,14 @@ func generate_image(
 	VisualServer.viewport_set_canvas_transform(vp, canvas, Transform())
 	VisualServer.canvas_item_set_parent(ci_rid, canvas)
 	var texture = ImageTexture.new()
-	texture.create_from_image(_img)
+	texture.create_from_image(img)
 	VisualServer.canvas_item_add_texture_rect(ci_rid, Rect2(Vector2(0, 0), size), texture)
 
 	var mat_rid = VisualServer.material_create()
 	VisualServer.material_set_shader(mat_rid, shader.get_rid())
 	VisualServer.canvas_item_set_material(ci_rid, mat_rid)
-	for key in _params:
-		VisualServer.material_set_param(mat_rid, key, _params[key])
+	for key in params:
+		VisualServer.material_set_param(mat_rid, key, params[key])
 
 	VisualServer.viewport_set_update_mode(vp, VisualServer.VIEWPORT_UPDATE_ONCE)
 	VisualServer.viewport_set_vflip(vp, true)
@@ -45,5 +39,5 @@ func generate_image(
 	VisualServer.free_rid(ci_rid)
 	VisualServer.free_rid(mat_rid)
 	viewport_texture.convert(Image.FORMAT_RGBA8)
-	_img.copy_from(viewport_texture)
+	img.copy_from(viewport_texture)
 	emit_signal("done")
diff --git a/src/UI/Dialogs/ImageEffects/DesaturateDialog.gd b/src/UI/Dialogs/ImageEffects/DesaturateDialog.gd
index dba342f7c..b0eee159b 100644
--- a/src/UI/Dialogs/ImageEffects/DesaturateDialog.gd
+++ b/src/UI/Dialogs/ImageEffects/DesaturateDialog.gd
@@ -5,14 +5,14 @@ var green := true
 var blue := true
 var alpha := false
 
-var shader_path: String = "res://src/Shaders/Desaturate.shader"
+var shader: Shader = preload("res://src/Shaders/Desaturate.shader")
 
 var confirmed: bool = false
 
 
-func _about_to_show():
-	var sm: ShaderMaterial = ShaderMaterial.new()
-	sm.shader = load(shader_path)
+func _about_to_show() -> void:
+	var sm := ShaderMaterial.new()
+	sm.shader = shader
 	preview.set_material(sm)
 	._about_to_show()
 
@@ -28,9 +28,9 @@ func _confirmed() -> void:
 	._confirmed()
 
 
-func commit_action(_cel: Image, _project: Project = Global.current_project) -> void:
-	var selection = _project.bitmap_to_image(_project.selection_bitmap, false)
-	var selection_tex = ImageTexture.new()
+func commit_action(cel: Image, project: Project = Global.current_project) -> void:
+	var selection: Image = project.bitmap_to_image(project.selection_bitmap, false)
+	var selection_tex := ImageTexture.new()
 	selection_tex.create_from_image(selection)
 
 	if !confirmed:
@@ -40,19 +40,19 @@ func commit_action(_cel: Image, _project: Project = Global.current_project) -> v
 		preview.material.set_shader_param("alpha", alpha)
 		preview.material.set_shader_param("selection", selection_tex)
 		preview.material.set_shader_param("affect_selection", selection_checkbox.pressed)
-		preview.material.set_shader_param("has_selection", _project.has_selection)
+		preview.material.set_shader_param("has_selection", project.has_selection)
 	else:
-		var params = {
+		var params := {
 			"red": red,
 			"blue": blue,
 			"green": green,
 			"alpha": alpha,
 			"selection": selection_tex,
 			"affect_selection": selection_checkbox.pressed,
-			"has_selection": _project.has_selection
+			"has_selection": project.has_selection
 		}
-		var gen: ShaderImageEffect = ShaderImageEffect.new()
-		gen.generate_image(_cel, shader_path, params, _project.size)
+		var gen := ShaderImageEffect.new()
+		gen.generate_image(cel, shader, params, project.size)
 		yield(gen, "done")
 
 
diff --git a/src/UI/Dialogs/ImageEffects/HSVDialog.gd b/src/UI/Dialogs/ImageEffects/HSVDialog.gd
index f4af1c285..dfbb27552 100644
--- a/src/UI/Dialogs/ImageEffects/HSVDialog.gd
+++ b/src/UI/Dialogs/ImageEffects/HSVDialog.gd
@@ -1,6 +1,6 @@
 extends ImageEffect
 
-var shader_path: String = "res://src/Shaders/HSV.shader"
+var shader: Shader = preload("res://src/Shaders/HSV.shader")
 
 var live_preview: bool = true
 var confirmed: bool = false
@@ -18,8 +18,8 @@ onready var wait_time_spinbox = $VBoxContainer/WaitSettings/WaitTime
 
 func _about_to_show() -> void:
 	reset()
-	var sm: ShaderMaterial = ShaderMaterial.new()
-	sm.shader = load(shader_path)
+	var sm := ShaderMaterial.new()
+	sm.shader = shader
 	preview.set_material(sm)
 	._about_to_show()
 
@@ -36,9 +36,9 @@ func _confirmed() -> void:
 	reset()
 
 
-func commit_action(_cel: Image, _project: Project = Global.current_project) -> void:
-	var selection = _project.bitmap_to_image(_project.selection_bitmap, false)
-	var selection_tex = ImageTexture.new()
+func commit_action(cel: Image, project: Project = Global.current_project) -> void:
+	var selection: Image = project.bitmap_to_image(project.selection_bitmap, false)
+	var selection_tex := ImageTexture.new()
 	selection_tex.create_from_image(selection)
 
 	if !confirmed:
@@ -47,18 +47,18 @@ func commit_action(_cel: Image, _project: Project = Global.current_project) -> v
 		preview.material.set_shader_param("val_shift_amount", val_slider.value / 100)
 		preview.material.set_shader_param("selection", selection_tex)
 		preview.material.set_shader_param("affect_selection", selection_checkbox.pressed)
-		preview.material.set_shader_param("has_selection", _project.has_selection)
+		preview.material.set_shader_param("has_selection", project.has_selection)
 	else:
-		var params = {
+		var params := {
 			"hue_shift_amount": hue_slider.value / 360,
 			"sat_shift_amount": sat_slider.value / 100,
 			"val_shift_amount": val_slider.value / 100,
 			"selection": selection_tex,
 			"affect_selection": selection_checkbox.pressed,
-			"has_selection": _project.has_selection
+			"has_selection": project.has_selection
 		}
-		var gen: ShaderImageEffect = ShaderImageEffect.new()
-		gen.generate_image(_cel, shader_path, params, _project.size)
+		var gen := ShaderImageEffect.new()
+		gen.generate_image(cel, shader, params, project.size)
 		yield(gen, "done")
 
 
diff --git a/src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd b/src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd
index db0166d36..698509021 100644
--- a/src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd
+++ b/src/UI/Dialogs/ImageEffects/InvertColorsDialog.gd
@@ -5,14 +5,14 @@ var green := true
 var blue := true
 var alpha := false
 
-var shader_path: String = "res://src/Shaders/Invert.shader"
+var shader: Shader = preload("res://src/Shaders/Invert.shader")
 
 var confirmed: bool = false
 
 
 func _about_to_show() -> void:
-	var sm: ShaderMaterial = ShaderMaterial.new()
-	sm.shader = load(shader_path)
+	var sm := ShaderMaterial.new()
+	sm.shader = shader
 	preview.set_material(sm)
 	._about_to_show()
 
@@ -28,9 +28,9 @@ func _confirmed() -> void:
 	._confirmed()
 
 
-func commit_action(_cel: Image, _project: Project = Global.current_project) -> void:
-	var selection = _project.bitmap_to_image(_project.selection_bitmap, false)
-	var selection_tex = ImageTexture.new()
+func commit_action(cel: Image, project: Project = Global.current_project) -> void:
+	var selection: Image = project.bitmap_to_image(project.selection_bitmap, false)
+	var selection_tex := ImageTexture.new()
 	selection_tex.create_from_image(selection)
 
 	if !confirmed:
@@ -40,19 +40,19 @@ func commit_action(_cel: Image, _project: Project = Global.current_project) -> v
 		preview.material.set_shader_param("alpha", alpha)
 		preview.material.set_shader_param("selection", selection_tex)
 		preview.material.set_shader_param("affect_selection", selection_checkbox.pressed)
-		preview.material.set_shader_param("has_selection", _project.has_selection)
+		preview.material.set_shader_param("has_selection", project.has_selection)
 	else:
-		var params = {
+		var params := {
 			"red": red,
 			"blue": blue,
 			"green": green,
 			"alpha": alpha,
 			"selection": selection_tex,
 			"affect_selection": selection_checkbox.pressed,
-			"has_selection": _project.has_selection
+			"has_selection": project.has_selection
 		}
-		var gen: ShaderImageEffect = ShaderImageEffect.new()
-		gen.generate_image(_cel, shader_path, params, _project.size)
+		var gen := ShaderImageEffect.new()
+		gen.generate_image(cel, shader, params, project.size)
 		yield(gen, "done")