Misc. fixes

addons/material_maker/engine/gen_base.gd

@@ -10,7 +10,7 @@ class InputPort:
 	var generator : MMGenBase = null
 	var input_index : int = 0
 
-	func _init(g : MMGenBase, i : int):
+	func _init(g : MMGenBase, i : int) -> void:
 		generator = g
 		input_index = i
 
@@ -33,12 +33,12 @@ class ShaderUniform:
 	var type : String
 	var value
 
-	func _init(n : String, t : String, v):
+	func _init(n : String, t : String, v) -> void:
 		name = n
 		type = t
 		value = v
 
-	func to_str(keyword : String = "uniform"):
+	func to_str(keyword : String = "uniform") -> String:
 		var str_value_assign : String = ""
 		match type:
 			"float":

addons/material_maker/engine/gen_iterate_buffer.gd

@@ -234,7 +234,7 @@ func get_output_attributes(output_index : int) -> Dictionary:
 		1:
 			attributes.texture = "%s_loop_tex" % genname
 			attributes.texture_size = "%s_tex_size" % genname
-			attributes.iteration = "%s_iteration" % genname
+			attributes.iteration = iteration_param_name
 	return attributes
 
 func _serialize(data: Dictionary) -> Dictionary:

addons/material_maker/engine/multi_renderer.gd

@@ -111,9 +111,8 @@ func release(renderer : Object) -> void:
 	free_renderers.append(renderer)
 	free_renderer.emit()
 
-
 func request_rendering_device(user) -> RenderingDevice:
-	while !renderers_enabled or rendering_device_user != null:
+	while ! renderers_enabled or rendering_device_user != null:
 		await self.free_rendering_device
 	rendering_device_user = user
 	return rendering_device

addons/material_maker/shader_functions.tres

@@ -41,4 +41,8 @@ vec3 hsv2rgb(vec3 c) {
 float param_rnd(float minimum, float maximum, float seed) {
 	return minimum+(maximum-minimum)*rand(vec2(seed));
 }
+
+float param_rndi(float minimum, float maximum, float seed) {
+	return floor(param_rnd(minimum, maximum + 1.0, seed));
+}
 "