Merge pull request #59 from RodZill4/dev-functions

Merged raymarching related stuff

addons/material_maker/doc/base_library.rst

@@ -8,6 +8,7 @@ to describe procedural materials.
 	:maxdepth: 2
 
 	nodes_simple
+	nodes_3d
 	nodes_pattern
 	nodes_noise
 	nodes_filter

addons/material_maker/doc/node_3d_sdf.rst

@@ -0,0 +1,69 @@
+3D signed distance function geometry nodes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The signed distance function nodes can be used to define complex 3D geometry using simple
+shapes.
+
+They are based on a very small set of basic shapes, that can be combined using operators,
+and finally output as a greyscale heightmap and a color normal map using the **render** node.
+
+Describing 3D objects using SDF primitives is more difficult than using existing meshes, but this
+method integrates smoothly with shader generation, and (as many nodes in Material Maker) is
+resolution independant.
+
+All output samples shown in this section are preview images.
+
+All Signed Distance Functions nodes are based on code written by Inigo Quilez that can be found
+`on this page`__.
+
+.. _sdf3dpage: https://www.iquilezles.org/www/articles/distfunctions/distfunctions.htm
+
+__ sdf3dpage_
+
+.. toctree::
+	:maxdepth: 1
+
+	node_3d_sdf_render
+
+Shapes
+++++++
+
+.. toctree::
+	:maxdepth: 1
+
+	node_3d_sdf_shapes_sphere
+	node_3d_sdf_shapes_box
+	node_3d_sdf_shapes_cylinder
+	node_3d_sdf_shapes_capsule
+	node_3d_sdf_shapes_cone
+	node_3d_sdf_shapes_torus
+
+Operators
++++++++++
+
+.. toctree::
+	:maxdepth: 1
+
+	node_3d_sdf_operators_boolean
+	node_3d_sdf_operators_smoothboolean
+	node_3d_sdf_operators_rounded
+	node_3d_sdf_operators_repeat
+	node_3d_sdf_operators_circlerepeat
+	node_3d_sdf_operators_extrusion
+	node_3d_sdf_operators_revolution
+
+Transforms
+++++++++++
+
+.. toctree::
+	:maxdepth: 1
+
+	node_3d_sdf_transforms_translate
+	node_3d_sdf_transforms_scale
+	node_3d_sdf_transforms_rotate
+
+Example images
+++++++++++++++
+
+.. image:: images/node_sdf3d_samples.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_boolean.rst

@@ -0,0 +1,31 @@
+Boolean node
+............
+
+The **Boolean** node generates a 3D signed distance function for the combination (union,
+intersection or difference) of its inputs.
+
+.. image:: images/node_sdf3d_boolean.png
+	:align: center
+
+Inputs
+::::::
+
+The **Boolean** node accepts 2 inputs in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Boolean** node generates a signed distance function of the
+combination of its inputs.
+
+Parameters
+::::::::::
+
+The **Boolean** node accepts *the operator it applies (union, intersection or
+difference)* as parameter.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_boolean_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_circlerepeat.rst

@@ -0,0 +1,30 @@
+CircleRepeat node
+...........
+
+The **CircleRepeat** node generates a 3D signed distance image of a circular repetition of its
+input. The source object must be offset in the positive Y direction from the center.
+
+.. image:: images/node_sdf3d_circlerepeat.png
+	:align: center
+
+Inputs
+::::::
+
+The **CircleRepeat** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **CircleRepeat** node generates a signed distance function of the
+repeated version of the input shape.
+
+Parameters
+::::::::::
+
+The **CircleRepeat** node accepts *the number of repetitions* as parameter.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_circlerepeat_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_extrusion.rst

@@ -0,0 +1,30 @@
+Extrusion node
+..............
+
+The **Extrusion** node generates a 3D signed distance function of a shape based on
+its (2D signed function) input extruded along the Y axis.
+
+.. image:: images/node_sdf3d_extrusion.png
+	:align: center
+
+Inputs
+::::::
+
+The **Extrusion** node accepts an input in 2D signed distance function format.
+
+Outputs
+:::::::
+
+The **Extrusion** node generates a signed distance function of the
+extruded version of the input shape.
+
+Parameters
+::::::::::
+
+The **Extrusion** node accepts the *the length* of the extruded shape as parameter. 
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_extrusion_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_repeat.rst

@@ -0,0 +1,34 @@
+Repeat node
+...........
+
+The **Repeat** node generates a 3D signed distance image of a repetition of its
+input on the X and Y axes. It can also apply a random rotation to the repeated
+object instances.
+
+.. image:: images/node_sdf3d_repeat.png
+	:align: center
+
+Inputs
+::::::
+
+The **Repeat** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Repeat** node generates a signed distance function of the
+repeated version of the input shape.
+
+Parameters
+::::::::::
+
+The **Repeat** node accepts the following parameters:
+
+* *the repetition offset* for both X and Y axes
+* *the amount of random rotation* applied to all instances
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_repeat_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_revolution.rst

@@ -0,0 +1,30 @@
+Revolution node
+...............
+
+The **Revolution** node generates a 3D signed distance function of a shape based on
+the revolution along the Z axis of its (2D signed function) input.
+
+.. image:: images/node_sdf3d_revolution.png
+	:align: center
+
+Inputs
+::::::
+
+The **Revolution** node accepts an input in 2D signed distance function format.
+
+Outputs
+:::::::
+
+The **Revolution** node generates a signed distance function of the
+revolution of the input shape.
+
+Parameters
+::::::::::
+
+The **Revolution** node accepts the *the radius* of the revolution operation as parameter. 
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_revolution_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_rounded.rst

@@ -0,0 +1,33 @@
+Rounded node
+.................
+
+The **Rounded** node generates a 3D signed distance function of a rounded shape
+based on its input, by substracting a constant from its input (i.e.
+"growing" it towards the outside).
+
+.. image:: images/node_sdf3d_roundedshape.png
+	:align: center
+
+Inputs
+::::::
+
+The **Rounded** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Rounded** node generates a signed distance function of the
+rounded version of the input shape.
+
+Parameters
+::::::::::
+
+The **Rounded** node accepts the following parameters:
+
+* *the distance* to be substracted from the function
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_roundedshape_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_operators_smoothboolean.rst

@@ -0,0 +1,33 @@
+SmoothBoolean node
+..................
+
+The **SmoothBoolean** node generates a 3D signed distance image for the combination (union,
+intersection or difference) of its inputs.
+
+.. image:: images/node_sdf3d_smoothboolean.png
+	:align: center
+
+Inputs
+::::::
+
+The **SmoothBoolean** node accepts 2 inputs in signed distance function format.
+
+Outputs
+:::::::
+
+The **SmoothBoolean** node generates a signed distance function of the
+combination of its inputs.
+
+Parameters
+::::::::::
+
+The **SmoothBoolean** node accepts the following parameters:
+
+* *the operator it applies (union, intersection or difference)*
+* *the smoothness* of the operation
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_smoothboolean_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_render.rst

@@ -0,0 +1,27 @@
+Render node
+...........
+
+The **Render** node generates images from a 3D signed distance function inputs.
+
+.. image:: images/node_sdf3d_render.png
+	:align: center
+
+Inputs
+::::::
+
+The **Render** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Render** node generates two images from its input:
+
+* a *height map* of the rendered input along the Z axis
+* a *normal map* of the rendered input calculated directly
+  using the 3D signed function (and consequently more
+  accurate than a normal map generated from the height map)
+
+Parameters
+::::::::::
+
+The **Render** node does no accept any parameter.

addons/material_maker/doc/node_3d_sdf_shapes_box.rst

@@ -0,0 +1,31 @@
+Box node
+........
+
+The **Box** node generates a 3d signed distance function for a box with rounded corners.
+
+.. image:: images/node_sdf3d_box.png
+	:align: center
+
+Inputs
+::::::
+
+The **Box** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Box** node generates a signed distance function for a box.
+
+Parameters
+::::::::::
+
+The **Box** node accepts the following parameters:
+
+* the X, Y and Z sizes of the box (not including the rounded corners and edges)
+* the radius of the rounded corners and edges
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_box_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_shapes_capsule.rst

@@ -0,0 +1,28 @@
+Capsule node
+............
+
+The **Capsule** node generates a 3d signed distance function for a capsule.
+
+.. image:: images/node_sdf3d_capsule.png
+	:align: center
+
+Inputs
+::::::
+
+The **Capsule** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Capsule** node generates a signed distance function for a capsule.
+
+Parameters
+::::::::::
+
+The **Capsule** node accepts as parameters the length of the capsule and its radius.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_capsule_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_shapes_cone.rst

@@ -0,0 +1,28 @@
+Capsule node
+............
+
+The **Capsule** node generates a 3d signed distance function for a capsule.
+
+.. image:: images/node_sdf3d_capsule.png
+	:align: center
+
+Inputs
+::::::
+
+The **Capsule** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Capsule** node generates a signed distance function for a capsule.
+
+Parameters
+::::::::::
+
+The **Capsule** node accepts as parameters the length of the capsule and its radius.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_capsule_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_shapes_cylinder.rst

@@ -0,0 +1,28 @@
+Cylinder node
+.............
+
+The **Cylinder** node generates a 3d signed distance function for a cylinder.
+
+.. image:: images/node_sdf3d_cylinder.png
+	:align: center
+
+Inputs
+::::::
+
+The **Cylinder** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Cylinder** node generates a signed distance function for a cylinder.
+
+Parameters
+::::::::::
+
+The **Cylinder** node accepts as parameters the length of the cylinder and its radius.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_cylinder_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_shapes_sphere.rst

@@ -0,0 +1,28 @@
+Sphere node
+...........
+
+The **Sphere** node generates a 3d signed distance function for a sphere.
+
+.. image:: images/node_sdf3d_sphere.png
+	:align: center
+
+Inputs
+::::::
+
+The **Sphere** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Sphere** node generates a signed distance function for a sphere.
+
+Parameters
+::::::::::
+
+The **Sphere** node accepts a single parameter, its radius.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_sphere_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_shapes_torus.rst

@@ -0,0 +1,28 @@
+Torus node
+..........
+
+The **Torus** node generates a 3d signed distance function for a torus.
+
+.. image:: images/node_sdf3d_torus.png
+	:align: center
+
+Inputs
+::::::
+
+The **Torus** node does not accept any input.
+
+Outputs
+:::::::
+
+The **Torus** node generates a signed distance function for a torus.
+
+Parameters
+::::::::::
+
+The **Torus** node accepts as parameters both radiuses of the torus.
+
+Example images
+::::::::::::::
+
+.. image:: images/node_sdf3d_torus_sample.png
+	:align: center

addons/material_maker/doc/node_3d_sdf_transforms_rotate.rst

@@ -0,0 +1,24 @@
+Rotate node
+...........
+
+The **Rotate** node generates a 3D signed distance function of a rotated shape
+based on its input.
+
+.. image:: images/node_sdf3d_rotate.png
+	:align: center
+
+Inputs
+::::::
+
+The **Rotate** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Rotate** node generates a signed distance function of the
+rotated input shape.
+
+Parameters
+::::::::::
+
+The **Rotate** node accepts *the angles of the rotations around the X, Y and Z axes* as parameters.

addons/material_maker/doc/node_3d_sdf_transforms_scale.rst

@@ -0,0 +1,24 @@
+Scale node
+..........
+
+The **Scale** node generates a 3D signed distance function of a scaled shape
+based on its input.
+
+.. image:: images/node_sdf3d_scale.png
+	:align: center
+
+Inputs
+::::::
+
+The **Scale** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Scale** node generates a signed distance function of the
+scaled input shape.
+
+Parameters
+::::::::::
+
+The **Scale** node accepts *its scale factor* as parameters.

addons/material_maker/doc/node_3d_sdf_transforms_translate.rst

@@ -0,0 +1,24 @@
+Translate node
+..............
+
+The **Translate** node generates a 3D signed distance function of a translated shape
+based on its input.
+
+.. image:: images/node_sdf3d_translate.png
+	:align: center
+
+Inputs
+::::::
+
+The **Translate** node accepts an input in 3D signed distance function format.
+
+Outputs
+:::::::
+
+The **Translate** node generates a signed distance function of the
+translated input shape.
+
+Parameters
+::::::::::
+
+The **Translate** node accepts *the X, Y and Z components of the translation* as parameters.

addons/material_maker/doc/node_simple_sdf.rst

@@ -1,5 +1,5 @@
-Signed distance function geometry nodes
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+2D Signed distance function geometry nodes
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The signed distance function nodes can be used to define complex geometry using simple
 shapes.
@@ -7,7 +7,7 @@ shapes.
 They are based on a very small set of basic shapes, that can be combined using operators,
 and finally output as a greyscale image using the **sdShow** node.
 
-All output samples shown in this sections are images generated through the **sdView** node.
+All output samples shown in this sections are images generated through the **sdShow** node.
 
 All Signed Distance Functions nodes are based on code written by Inigo Quilez that can be found
 `on this page`__.

addons/material_maker/doc/nodes_3d.rst

@@ -0,0 +1,10 @@
+3D nodes
+--------
+
+The simple nodes are nodes that do not accept any input and generate one or several simple shapes.
+
+.. toctree::
+	:maxdepth: 0
+
+	node_3d_sdf
+	

addons/material_maker/doc/subgraph_nodes.rst

@@ -21,11 +21,12 @@ shortcut will make it possible to edit its contents using the pencil button.
 The newly created subgraph contains:
 
 * all nodes that have been grouped
-* an **Input** and an **Output** node that rep^resent the inputs and the outputs
+* an **Input** and an **Output** node that represent the inputs and the outputs
   of the subgraph. Selecting them and using the **Control+W** shortcut makes them
-  editable so the subgraph inputs and outputs can be added, removed reordered or
-  renamed. Please note that all those operations will (when possible) keep
-  connectivity inside and outside the subgraph.
+  editable so the subgraph inputs and outputs can be added, removed, reordered,
+  renamed or have their types modified.
+  Please note that all those operations will (when possible) keep connectivity
+  inside and outside the subgraph.
 * A **Parameters** node that is a **remote** can be edited to expose selected
   parameters to the parent graph. When grouping nodes with a **remote**, the
   remote will automatically be used as **Parameters** node in the nealy created

addons/material_maker/engine/gen_base.gd

@@ -37,6 +37,17 @@ var parameters = {}
 var seed_locked : bool = false
 var seed_value : int = 0
 
+const PORT_TYPE_NAMES : Array = [ "f", "rgb", "rgba", "sdf2d", "sdf3d" ]
+
+const PORT_TYPES : Dictionary = {
+	f     = { type="float", paramdefs="vec2 uv", params="uv", slot_type=0, color=Color(0.5, 0.5, 0.5) },
+	rgb   = { type="vec3", paramdefs="vec2 uv", params="uv", slot_type=0, color=Color(0.5, 0.5, 1.0) },
+	rgba  = { type="vec4", paramdefs="vec2 uv", params="uv", slot_type=0, color=Color(0.0, 0.5, 0.0, 0.5) },
+	sdf2d = { type="float", paramdefs="vec2 uv", params="uv", slot_type=1, color=Color(1.0, 0.5, 0.0) },
+	sdf3d = { type="float", paramdefs="vec3 p", params="p", slot_type=2, color=Color(1.0, 0.0, 0.0) },
+	any = { slot_type=42, color=Color(1.0, 1.0, 1.0) }
+}
+
 func _ready() -> void:
 	init_parameters()
 
@@ -151,14 +162,18 @@ func get_input_shader(input_index : int) -> Dictionary:
 func get_shader(output_index : int, context) -> Dictionary:
 	return get_shader_code("UV", output_index, context)
 
-func render(output_index : int, size : int) -> Object:
+func render(output_index : int, size : int, preview : bool = false) -> Object:
 	var context : MMGenContext = MMGenContext.new()
-	var source = get_shader_code("UV", output_index, context)
+	var source = get_shader_code("uv", output_index, context)
 	while source is GDScriptFunctionState:
 		source = yield(source, "completed")
 	if source.empty():
 		source = { defs="", code="", textures={}, rgba="vec4(0.0)" }
-	var shader : String = mm_renderer.generate_shader(source)
+	var shader : String
+	if preview:
+		shader = mm_renderer.generate_preview_shader(source)
+	else:
+		shader = mm_renderer.generate_shader(source)
 	var result = mm_renderer.render_shader(shader, source.textures, size)
 	while result is GDScriptFunctionState:
 		result = yield(result, "completed")
@@ -174,15 +189,14 @@ func get_shader_code(uv : String, output_index : int, context : MMGenContext) ->
 				rv.f = "(dot("+rv.rgb+", vec3(1.0))/3.0)"
 			elif rv.has("rgba"):
 				rv.f = "(dot("+rv.rgba+".rgb, vec3(1.0))/3.0)"
-			else:
-				rv.f = "0.0"
 		if !rv.has("rgb"):
 			if rv.has("rgba"):
 				rv.rgb = rv.rgba+".rgb"
-			else:
+			elif rv.has("f"):
 				rv.rgb = "vec3("+rv.f+")"
 		if !rv.has("rgba"):
-			rv.rgba = "vec4("+rv.rgb+", 1.0)"
+			if rv.has("rgb"):
+				rv.rgba = "vec4("+rv.rgb+", 1.0)"
 	return rv
 
 func _get_shader_code(__, __, __) -> Dictionary:

addons/material_maker/engine/gen_context.gd

@@ -4,10 +4,19 @@ class_name MMGenContext
 
 
 var variants : Dictionary = {}
+var parent_context : MMGenContext = null
 
+func _init(p = null) -> void:
+	parent_context = p
 
 func has_variant(generator) -> bool:
-	return variants.has(generator)
+	return variants.has(generator) or parent_context != null and parent_context.has_variant(generator)
+
+func touch_variant(generator) -> void:
+	if !variants.has(generator):
+		variants[generator] = []
+	if parent_context != null:
+		parent_context.touch_variant(generator)
 
 func get_variant(generator, variant) -> int:
 	var rv = -1
@@ -17,4 +26,5 @@ func get_variant(generator, variant) -> int:
 			variants[generator].push_back(variant)
 	else:
 		variants[generator] = [variant]
+	touch_variant(generator)
 	return rv

addons/material_maker/engine/gen_graph.gd

@@ -284,8 +284,8 @@ func create_subgraph(gens : Array) -> MMGenGraph:
 			if port_index == -1:
 				port_index = outputs.size()
 				outputs.push_back(src_name)
-				gen_outputs.ports.push_back( { name="port"+str(port_index), type="rgba" } )
-				print(gen_outputs.ports)
+				var type = new_graph.get_node(c.from).get_output_defs()[c.from_port].type
+				gen_outputs.ports.push_back( { name="port"+str(port_index), type=type } )
 			my_new_connections.push_back( { from=new_graph.name, from_port=port_index, to=c.to, to_port=c.to_port } )
 			new_graph_connections.push_back( { from=c.from, from_port=c.from_port, to="gen_outputs", to_port=port_index } )
 		elif names.find(c.to) != -1:
@@ -293,7 +293,8 @@ func create_subgraph(gens : Array) -> MMGenGraph:
 			if port_index == -1:
 				port_index = inputs.size()
 				inputs.push_back(src_name)
-				gen_inputs.ports.push_back( { name="port"+str(port_index), type="rgba" } )
+				var type = get_node(c.from).get_output_defs()[c.from_port].type
+				gen_inputs.ports.push_back( { name="port"+str(port_index), type=type } )
 			my_new_connections.push_back( { from=c.from, from_port=c.from_port, to=new_graph.name, to_port=port_index } )
 			new_graph_connections.push_back( { from="gen_inputs", from_port=port_index, to=c.to, to_port=c.to_port } )
 		else:

addons/material_maker/engine/gen_ios.gd

@@ -27,7 +27,7 @@ func get_type_name() -> String:
 func get_io_defs() -> Array:
 	var rv : Array = []
 	for p in ports:
-		rv.push_back({ name=p.name, type="rgba" })
+		rv.push_back({ name=p.name, type=p.type })
 	return rv
 
 func get_input_defs() -> Array:
@@ -54,6 +54,11 @@ func add_port() -> void:
 func set_port_name(i : int, n : String) -> void:
 	ports[i].name = n
 
+func set_port_type(i : int, t : String) -> void:
+	print(t)
+	ports[i].type = t
+	emit_signal("parameter_changed", "__update_all__", null)
+
 func delete_port(i : int) -> void:
 	ports.remove(i)
 	var input_gen = get_parent() if name == "gen_inputs" else self

addons/material_maker/engine/gen_shader.gd

@@ -2,11 +2,13 @@ tool
 extends MMGenBase
 class_name MMGenShader
 
+
 var shader_model : Dictionary = {}
 var uses_seed = false
 
 var editable = false
 
+
 func toggle_editable() -> bool:
 	editable = !editable
 	if editable:
@@ -53,16 +55,12 @@ func set_shader_model(data: Dictionary) -> void:
 		for i in range(shader_model.outputs.size()):
 			var output = shader_model.outputs[i]
 			var output_code = ""
-			if output.has("rgba"):
-				shader_model.outputs[i].type = "rgba"
-				output_code = output.rgba
-			elif output.has("rgb"):
-				shader_model.outputs[i].type = "rgb"
-				output_code = output.rgb
-			elif output.has("f"):
-				shader_model.outputs[i].type = "f"
-				output_code = output.f
-			else:
+			for f in PORT_TYPES.keys():
+				if output.has(f):
+					shader_model.outputs[i].type = f
+					output_code = output[f]
+					break
+			if output_code == "":
 				print("Unsupported output type")
 			if output_code.find("$seed") != -1 or output_code.find("$(seed)") != -1:
 				uses_seed = true
@@ -90,7 +88,19 @@ func find_keyword_call(string, keyword):
 			parenthesis_level -= 1
 	return ""
 
-func replace_input(string, context, input, type, src, default) -> Dictionary:
+func replace_input_with_function_call(string : String, input : String) -> String:
+	var genname = "o"+str(get_instance_id())
+	while true:
+		var uv = find_keyword_call(string, input)
+		if uv == null:
+			break
+		elif uv == "":
+			print("syntax error")
+			break
+		string = string.replace("$%s(%s)" % [ input, uv ], "%s_input_%s(%s)" % [ genname, input, uv ])
+	return string
+
+func replace_input(string : String, context, input : String, type : String, src : OutputPort, default : String) -> Dictionary:
 	var required_globals = []
 	var required_defs = ""
 	var required_code = ""
@@ -113,7 +123,10 @@ func replace_input(string, context, input, type, src, default) -> Dictionary:
 			src_code = src.generator.get_shader_code(uv, src.output_index, context)
 			while src_code is GDScriptFunctionState:
 				src_code = yield(src_code, "completed")
-			src_code.string = src_code[type]
+			if src_code.has(type):
+				src_code.string = src_code[type]
+			else:
+				src_code.string = "*error*"
 		# Add global definitions
 		if src_code.has("globals"):
 			for d in src_code.globals:
@@ -134,7 +147,7 @@ func replace_input(string, context, input, type, src, default) -> Dictionary:
 func is_word_letter(l) -> bool:
 	return "azertyuiopqsdfghjklmwxcvbnAZERTYUIOPQSDFGHJKLMWXCVBN1234567890_".find(l) != -1
 
-func replace_variable(string, variable, value) -> String:
+func replace_variable(string : String, variable : String, value : String) -> String:
 	string = string.replace("$(%s)" % variable, value)
 	var keyword_size = variable.length()+1
 	var new_string = ""
@@ -152,7 +165,7 @@ func replace_variable(string, variable, value) -> String:
 		string = string.right(keyword_size)
 	return new_string
 
-func subst(string, context, uv = "") -> Dictionary:
+func subst(string : String, context : MMGenContext, uv : String = "") -> Dictionary:
 	var genname = "o"+str(get_instance_id())
 	var required_globals = []
 	var required_defs = ""
@@ -199,40 +212,41 @@ func subst(string, context, uv = "") -> Dictionary:
 			for i in range(shader_model.inputs.size()):
 				var input = shader_model.inputs[i]
 				var source = get_source(i)
-				var result = replace_input(string, context, input.name, input.type, source, input.default)
-				while result is GDScriptFunctionState:
-					result = yield(result, "completed")
-				if string != result.string:
-					changed = true
-				if result.new_pass_required:
-					new_pass_required = true
-				string = result.string
-				# Add global definitions
-				for d in result.globals:
-					if required_globals.find(d) == -1:
-						required_globals.push_back(d)
-				# Add generated definitions
-				required_defs += result.defs
-				# Add generated code
-				required_code += result.code
-				for t in result.textures.keys():
-					required_textures[t] = result.textures[t]
+				if input.has("function") and input.function:
+					string = replace_input_with_function_call(string, input.name)
+				else:
+					var result = replace_input(string, context, input.name, input.type, source, input.default)
+					while result is GDScriptFunctionState:
+						result = yield(result, "completed")
+					if string != result.string:
+						changed = true
+					if result.new_pass_required:
+						new_pass_required = true
+					string = result.string
+					# Add global definitions
+					for d in result.globals:
+						if required_globals.find(d) == -1:
+							required_globals.push_back(d)
+					# Add generated definitions
+					required_defs += result.defs
+					# Add generated code
+					required_code += result.code
+					for t in result.textures.keys():
+						required_textures[t] = result.textures[t]
 			cont = changed and new_pass_required
 	return { string=string, globals=required_globals, defs=required_defs, code=required_code, textures=required_textures }
 
+func create_input_function(function_name : String, input_index : int, context : MMGenContext) -> Dictionary:
+	var rv = { globals=[], defs="", code="", textures={} }
+	return rv
+
 func _get_shader_code(uv : String, output_index : int, context : MMGenContext) -> Dictionary:
 	var genname = "o"+str(get_instance_id())
-	var output_info = [ { field="rgba", type="vec4" }, { field="rgb", type="vec3" }, { field="f", type="float" } ]
 	var rv = { globals=[], defs="", code="", textures={} }
 	if shader_model != null and shader_model.has("outputs") and shader_model.outputs.size() > output_index:
 		var output = shader_model.outputs[output_index]
-		if shader_model.has("instance") && !context.has_variant(self):
-			var subst_output = subst(shader_model.instance, context, "")
-			while subst_output is GDScriptFunctionState:
-				subst_output = yield(subst_output, "completed")
-			rv.defs += subst_output.string
-			for t in subst_output.textures.keys():
-				rv.textures[t] = subst_output.textures[t]
+		if !context.has_variant(self):
+			# Generate functions for gradients
 			for p in shader_model.parameters:
 				if p.type == "gradient":
 					var g = parameters[p.name]
@@ -240,6 +254,37 @@ func _get_shader_code(uv : String, output_index : int, context : MMGenContext) -
 						g = MMGradient.new()
 						g.deserialize(parameters[p.name])
 					rv.defs += g.get_shader(genname+"_p_"+p.name+"_gradient_fct")
+			# Generate functions for inputs
+			if shader_model.has("inputs"):
+				for i in range(shader_model.inputs.size()):
+					var input = shader_model.inputs[i]
+					if input.has("function") and input.function:
+						var source = get_source(i)
+						var string = "$%s(%s)" % [ input.name, PORT_TYPES[input.type].params ]
+						var local_context = MMGenContext.new(context)
+						var result = replace_input(string, local_context, input.name, input.type, source, input.default)
+						while result is GDScriptFunctionState:
+							result = yield(result, "completed")
+						# Add global definitions
+						for d in result.globals:
+							if rv.globals.find(d) == -1:
+								rv.globals.push_back(d)
+						# Add generated definitions
+						rv.defs += result.defs
+						# Add textures
+						for t in result.textures.keys():
+							rv.textures[t] = result.textures[t]
+						rv.defs += "%s %s_input_%s(%s) {\n" % [ PORT_TYPES[input.type].type, genname, input.name, PORT_TYPES[input.type].paramdefs ]
+						rv.defs += "%s\n" % result.code
+						rv.defs += "return %s;\n}\n" % result.string
+			if shader_model.has("instance"):
+				var subst_output = subst(shader_model.instance, context, "")
+				while subst_output is GDScriptFunctionState:
+					subst_output = yield(subst_output, "completed")
+				rv.defs += subst_output.string
+				# process textures
+				for t in subst_output.textures.keys():
+					rv.textures[t] = subst_output.textures[t]
 		# Add inline code
 		if shader_model.has("code"):
 			var variant_index = context.get_variant(self, uv)
@@ -262,9 +307,9 @@ func _get_shader_code(uv : String, output_index : int, context : MMGenContext) -
 		var variant_index = context.get_variant(self, variant_string)
 		if variant_index == -1:
 			variant_index = context.get_variant(self, variant_string)
-			for t in output_info:
-				if output.has(t.field):
-					var subst_output = subst(output[t.field], context, uv)
+			for f in PORT_TYPES.keys():
+				if output.has(f):
+					var subst_output = subst(output[f], context, uv)
 					while subst_output is GDScriptFunctionState:
 						subst_output = yield(subst_output, "completed")
 					# Add global definitions
@@ -275,12 +320,12 @@ func _get_shader_code(uv : String, output_index : int, context : MMGenContext) -
 					rv.defs += subst_output.defs
 					# Add generated code
 					rv.code += subst_output.code
-					rv.code += "%s %s_%d_%d_%s = %s;\n" % [ t.type, genname, output_index, variant_index, t.field, subst_output.string ]
+					rv.code += "%s %s_%d_%d_%s = %s;\n" % [ PORT_TYPES[f].type, genname, output_index, variant_index, f, subst_output.string ]
 					for t in subst_output.textures.keys():
 						rv.textures[t] = subst_output.textures[t]
-		for t in output_info:
-			if output.has(t.field):
-				rv[t.field] = "%s_%d_%d_%s" % [ genname, output_index, variant_index, t.field ]
+		for f in PORT_TYPES.keys():
+			if output.has(f):
+				rv[f] = "%s_%d_%d_%s" % [ genname, output_index, variant_index, f ]
 		if shader_model.has("global") && rv.globals.find(shader_model.global) == -1:
 			rv.globals.push_back(shader_model.global)
 	return rv

addons/material_maker/engine/gen_switch.gd

@@ -34,14 +34,14 @@ func get_input_defs() -> Array:
 	for c in range(parameters.choices):
 		for o in range(parameters.outputs):
 			var n = PoolByteArray([65+o]).get_string_from_ascii()+str(c)
-			rv.push_back({ name=n, label=n, type="rgba" })
+			rv.push_back({ name=n, label=n, type="any" })
 	return rv
 
 func get_output_defs() -> Array:
 	var rv : Array = []
 	for o in range(parameters.outputs):
 		var n = PoolByteArray([65+o]).get_string_from_ascii()
-		rv.push_back({ name=n, type="rgba" })
+		rv.push_back({ name=n, type="any" })
 	return rv
 
 func set_parameter(p, v) -> void:

addons/material_maker/engine/renderer.gd

@@ -27,13 +27,86 @@ static func generate_shader(src_code) -> String:
 			code += g
 	var shader_code = src_code.defs
 	shader_code += "\nvoid fragment() {\n"
+	shader_code += "vec2 uv = UV;\n"
 	shader_code += src_code.code
-	shader_code += "COLOR = "+src_code.rgba+";\n"
+	if src_code.has("rgba"):
+		shader_code += "COLOR = "+src_code.rgba+";\n"
+	else:
+		shader_code += "COLOR = vec4(1.0, 0.0, 0.0, 1.0);\n"
 	shader_code += "}\n"
 	#print("GENERATED SHADER:\n"+shader_code)
 	code += shader_code
 	return code
 
+static func generate_preview_shader(src_code) -> String:
+	var code
+	code = "shader_type canvas_item;\n"
+	code += "render_mode blend_disabled;\n"
+	code += "uniform float preview_size = 64;\n"
+	var file = File.new()
+	file.open("res://addons/material_maker/common.shader", File.READ)
+	code += file.get_as_text()
+	code += "\n"
+	if src_code.has("textures"):
+		for t in src_code.textures.keys():
+			code += "uniform sampler2D "+t+";\n"
+	if src_code.has("globals"):
+		for g in src_code.globals:
+			code += g
+	var shader_code = src_code.defs
+	if src_code.has("rgba"):
+		shader_code += "\nvoid fragment() {\n"
+		shader_code += "vec2 uv = UV;\n"
+		shader_code += src_code.code
+		shader_code += "COLOR = "+src_code.rgba+";\n"
+		shader_code += "}\n"
+	elif src_code.has("sdf2d"):
+		shader_code += "\nvoid fragment() {\n"
+		shader_code += "vec2 uv = UV;\n"
+		shader_code += src_code.code
+		shader_code += "float d = "+src_code.sdf2d+";\n"
+		shader_code += "vec3 col = vec3(cos(d*min(256, preview_size)));\n"
+		shader_code += "col *= clamp(1.0-d*d, 0.0, 1.0);\n"
+		shader_code += "col *= vec3(1.0, vec2(step(-0.015, d)));\n"
+		shader_code += "col *= vec3(vec2(step(d, 0.015)), 1.0);\n"
+		shader_code += "COLOR = vec4(col, 1.0);\n"
+		shader_code += "}\n"
+	elif src_code.has("sdf3d"):
+		shader_code += "\nfloat calcdist(vec3 uv) {\n"
+		shader_code += src_code.code
+		shader_code += "return min("+src_code.sdf3d+", uv.z);\n"
+		shader_code += "}\n"
+		shader_code += "float raymarch(vec3 ro, vec3 rd) {\n"
+		shader_code += "float d=0.0;\n"
+		shader_code += "for (int i = 0; i < 50; i++) {\n"
+		shader_code += "vec3 p = ro + rd*d;\n"
+		shader_code += "float dstep = calcdist(p);\n"
+		shader_code += "d += dstep;\n"
+		shader_code += "if (dstep < 0.0001) break;\n"
+		shader_code += "}\n"
+		shader_code += "return d;\n"
+		shader_code += "}\n"
+		shader_code += "vec3 normal(vec3 p) {\n"
+		shader_code += "	float d = calcdist(p);\n"
+		shader_code += "    float e = .0001;\n"
+		shader_code += "    vec3 n = d - vec3(calcdist(p-vec3(e, 0.0, 0.0)), calcdist(p-vec3(0.0, e, 0.0)), calcdist(p-vec3(0.0, 0.0, e)));\n"
+		shader_code += "    return normalize(n);\n"
+		shader_code += "}\n"
+		shader_code += "\nvoid fragment() {\n"
+		shader_code += "vec2 uv = UV-vec2(0.5);\n"
+		shader_code += "vec3 p = vec3(uv, 2.0-raymarch(vec3(uv, 2.0), vec3(0.0, 0.0, -1.0)));\n"
+		shader_code += "vec3 n = normal(p);\n"
+		shader_code += "vec3 l = vec3(5.0, 5.0, 10.0);\n"
+		shader_code += "vec3 ld = normalize(l-p);\n"
+		shader_code += "float o = step(p.z, 0.001);\n"
+		shader_code += "float shadow = 1.0-0.75*step(raymarch(l, -ld), length(l-p)-0.01);\n"
+		shader_code += "float light = 0.3+0.7*dot(n, ld)*shadow;\n"
+		shader_code += "COLOR = vec4(vec3(0.8+0.2*o, 0.8+0.2*o, 1.0)*light, 1.0);\n"
+		shader_code += "}\n"
+	#print("GENERATED SHADER:\n"+shader_code)
+	code += shader_code
+	return code
+
 static func generate_combined_shader(red_code, green_code, blue_code) -> String:
 	var code
 	code = "shader_type canvas_item;\n"
@@ -44,6 +117,7 @@ static func generate_combined_shader(red_code, green_code, blue_code) -> String:
 	code += "\n"
 	var globals = []
 	var textures = {}
+	var output = []
 	for c in [ red_code, green_code, blue_code ]:
 		if c.has("textures"):
 			for t in c.textures.keys():
@@ -52,6 +126,10 @@ static func generate_combined_shader(red_code, green_code, blue_code) -> String:
 			for g in c.globals:
 				if globals.find(g) == -1:
 					globals.push_back(g)
+		if c.has("f"):
+			output.push_back(c.f)
+		else:
+			output.push_back("1.0")
 	for t in textures.keys():
 		code += "uniform sampler2D "+t+";\n"
 	for g in globals:
@@ -64,7 +142,7 @@ static func generate_combined_shader(red_code, green_code, blue_code) -> String:
 	shader_code += red_code.code
 	shader_code += green_code.code
 	shader_code += blue_code.code
-	shader_code += "COLOR = vec4("+red_code.f+", "+green_code.f+", "+blue_code.f+", 1.0);\n"
+	shader_code += "COLOR = vec4("+output[0]+", "+output[1]+", "+output[2]+", 1.0);\n"
 	shader_code += "}\n"
 	#print("GENERATED COMBINED SHADER:\n"+shader_code)
 	code += shader_code
@@ -95,6 +173,7 @@ func render_shader(shader, textures, render_size) -> Object:
 	if textures != null:
 		for k in textures.keys():
 			shader_material.set_shader_param(k, textures[k])
+	shader_material.set_shader_param("preview_size", render_size)
 	render_target_update_mode = Viewport.UPDATE_ONCE
 	update_worlds()
 	yield(get_tree(), "idle_frame")

addons/material_maker/examples/pile_of_bricks.ptex

@@ -0,0 +1,625 @@
+{
+	"connections": [
+		{
+			"from": "uniform",
+			"from_port": 0,
+			"to": "Material",
+			"to_port": 0
+		},
+		{
+			"from": "graph",
+			"from_port": 0,
+			"to": "sdf3d_scale_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_scale_2",
+			"from_port": 0,
+			"to": "sdf3d_repeat",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_repeat",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_scale_2",
+			"from_port": 0,
+			"to": "sdf3d_repeat_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_repeat_2",
+			"from_port": 0,
+			"to": "sdf3d_translate_3_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_translate_3_2",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3",
+			"to_port": 1
+		},
+		{
+			"from": "sdf3d_repeat_3",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_repeat_2_2",
+			"from_port": 0,
+			"to": "sdf3d_translate_3_2_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_translate_3_2_2",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3_2",
+			"to_port": 1
+		},
+		{
+			"from": "sdf3d_scale_2",
+			"from_port": 0,
+			"to": "sdf3d_repeat_3",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_scale_2",
+			"from_port": 0,
+			"to": "sdf3d_repeat_2_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_boolean_3_2",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3_3",
+			"to_port": 1
+		},
+		{
+			"from": "sdf3d_boolean_3_3",
+			"from_port": 0,
+			"to": "sdf3d_translate_3_2_2_2",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_boolean_3",
+			"from_port": 0,
+			"to": "sdf3d_translate_3_2_3",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_translate_3_2_3",
+			"from_port": 0,
+			"to": "sdf3d_boolean_3_3",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_translate_3_2_2_2",
+			"from_port": 0,
+			"to": "raymarching",
+			"to_port": 0
+		},
+		{
+			"from": "raymarching",
+			"from_port": 1,
+			"to": "Material",
+			"to_port": 4
+		},
+		{
+			"from": "occlusion",
+			"from_port": 0,
+			"to": "Material",
+			"to_port": 5
+		},
+		{
+			"from": "raymarching",
+			"from_port": 0,
+			"to": "occlusion",
+			"to_port": 0
+		},
+		{
+			"from": "raymarching",
+			"from_port": 0,
+			"to": "colorize",
+			"to_port": 0
+		},
+		{
+			"from": "colorize",
+			"from_port": 0,
+			"to": "Material",
+			"to_port": 6
+		}
+	],
+	"label": "Graph",
+	"name": "49",
+	"node_position": {
+		"x": 0,
+		"y": 0
+	},
+	"nodes": [
+		{
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+			"node_position": {
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+				"size": 11,
+				"subsurf_scatter_strength": 0
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+		{
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+					"r": 0.768627,
+					"type": "Color"
+				}
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+				"z": 0
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+			"type": "sdf3d_scale"
+		},
+		{
+			"name": "sdf3d_boolean_3",
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+		},
+		{
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+					"node_position": {
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+					"type": "sdf3d_boolean"
+				},
+				{
+					"name": "gen_inputs",
+					"node_position": {
+						"x": -748.5,
+						"y": -159.361115
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+					"parameters": {
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+					},
+					"ports": [
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+					],
+					"type": "ios"
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+				{
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+					"ports": [
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+							"type": "sdf3d"
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+					],
+					"type": "ios"
+				},
+				{
+					"name": "gen_parameters",
+					"node_position": {
+						"x": -488.111115,
+						"y": -466.5
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+					"parameters": {
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+					},
+					"type": "remote",
+					"widgets": [
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+				}
+			],
+			"parameters": {
+
+			},
+			"type": "graph"
+		},
+		{
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+			"node_position": {
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+			"type": "sdf3d_repeat"
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+		{
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+			"type": "sdf3d_repeat"
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+			"type": "sdf3d_translate"
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+				"r": 0.3,
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+			"type": "sdf3d_boolean"
+		},
+		{
+			"name": "sdf3d_boolean_3_3",
+			"node_position": {
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+				"y": 120.689819
+			},
+			"parameters": {
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+				"cx": 0,
+				"cy": 0,
+				"h": 0.08,
+				"op": 0,
+				"r": 0.3,
+				"w": 0.28
+			},
+			"type": "sdf3d_boolean"
+		},
+		{
+			"name": "sdf3d_translate_3_2_2_2",
+			"node_position": {
+				"x": 179.457428,
+				"y": 193.189819
+			},
+			"parameters": {
+				"x": 0,
+				"y": 0,
+				"z": 0.3
+			},
+			"type": "sdf3d_translate"
+		},
+		{
+			"name": "sdf3d_translate_3_2_3",
+			"node_position": {
+				"x": -19.542572,
+				"y": 10.189819
+			},
+			"parameters": {
+				"x": 0.04,
+				"y": 0.04,
+				"z": 0.15
+			},
+			"type": "sdf3d_translate"
+		},
+		{
+			"name": "raymarching",
+			"node_position": {
+				"x": 187.457397,
+				"y": 303.189819
+			},
+			"parameters": {
+
+			},
+			"type": "raymarching"
+		},
+		{
+			"name": "occlusion",
+			"node_position": {
+				"x": 410.234558,
+				"y": 303.189819
+			},
+			"parameters": {
+				"param0": 9,
+				"param1": 50,
+				"param2": 5.2
+			},
+			"type": "occlusion"
+		},
+		{
+			"name": "colorize",
+			"node_position": {
+				"x": 430.387573,
+				"y": 218.189819
+			},
+			"parameters": {
+				"gradient": {
+					"interpolation": 1,
+					"points": [
+						{
+							"a": 1,
+							"b": 1,
+							"g": 1,
+							"pos": 0,
+							"r": 1
+						},
+						{
+							"a": 1,
+							"b": 0,
+							"g": 0,
+							"pos": 0.563636,
+							"r": 0
+						}
+					],
+					"type": "Gradient"
+				}
+			},
+			"type": "colorize"
+		}
+	],
+	"parameters": {
+
+	},
+	"type": "graph"
+}

addons/material_maker/examples/raymarching.ptex

@@ -0,0 +1,389 @@
+{
+	"connections": [
+		{
+			"from": "sdbox",
+			"from_port": 0,
+			"to": "sdboolean",
+			"to_port": 1
+		},
+		{
+			"from": "sdrhombus_2",
+			"from_port": 0,
+			"to": "sdboolean",
+			"to_port": 0
+		},
+		{
+			"from": "sdboolean",
+			"from_port": 0,
+			"to": "_4_2_3",
+			"to_port": 0
+		},
+		{
+			"from": "_4_2_3",
+			"from_port": 0,
+			"to": "sdf3d_revolution",
+			"to_port": 0
+		},
+		{
+			"from": "sdf3d_revolution",
+			"from_port": 0,
+			"to": "sdrotate",
+			"to_port": 0
+		},
+		{
+			"from": "raymarching",
+			"from_port": 1,
+			"to": "Material",
+			"to_port": 4
+		},
+		{
+			"from": "sdrotate",
+			"from_port": 0,
+			"to": "raymarching",
+			"to_port": 0
+		},
+		{
+			"from": "uniform",
+			"from_port": 0,
+			"to": "Material",
+			"to_port": 0
+		},
+		{
+			"from": "uniform",
+			"from_port": 0,
+			"to": "Material",
+			"to_port": 1
+		}
+	],
+	"label": "Graph",
+	"name": "49",
+	"node_position": {
+		"x": 0,
+		"y": 0
+	},
+	"nodes": [
+		{
+			"name": "Material",
+			"node_position": {
+				"x": -336,
+				"y": 266
+			},
+			"parameters": {
+				"albedo_color": {
+					"a": 1,
+					"b": 1,
+					"g": 1,
+					"r": 1,
+					"type": "Color"
+				},
+				"ao_light_affect": 1,
+				"depth_scale": 1,
+				"emission_energy": 1,
+				"metallic": 1,
+				"normal_scale": 1,
+				"roughness": 1,
+				"size": 11,
+				"subsurf_scatter_strength": 0
+			},
+			"type": "material"
+		},
+		{
+			"name": "sdrotate",
+			"node_position": {
+				"x": -722.057617,
+				"y": 347.909668
+			},
+			"parameters": {
+				"a": 0,
+				"ax": 18,
+				"ay": -28,
+				"az": -29,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"shader_model": {
+				"code": "",
+				"global": "vec3 rotate3d(vec3 p, vec3 a) {\n\tvec3 rv;\n\tfloat c;\n\tfloat s;\n\tc = cos(a.x);\n\ts = sin(a.x);\n\trv.x = p.x;\n\trv.y = p.y*c+p.z*s;\n\trv.z = -p.y*s+p.z*c;\n\tc = cos(a.y);\n\ts = sin(a.y);\n\tp.x = rv.x*c+rv.z*s;\n\tp.y = rv.y;\n\tp.z = -rv.x*s+rv.z*c;\n\tc = cos(a.z);\n\ts = sin(a.z);\n\trv.x = p.x*c+p.y*s;\n\trv.y = -p.x*s+p.y*c;\n\trv.z = p.z;\n\treturn rv;\n}\n",
+				"inputs": [
+					{
+						"default": "0.0",
+						"label": "",
+						"name": "in",
+						"type": "sdf3d"
+					}
+				],
+				"instance": "",
+				"name": "Rotate",
+				"outputs": [
+					{
+						"sdf3d": "$in(rotate3d($uv, -vec3($ax, $ay, $az)*0.01745329251))",
+						"type": "sdf3d"
+					}
+				],
+				"parameters": [
+					{
+						"default": 0,
+						"label": "X",
+						"max": 180,
+						"min": -180,
+						"name": "ax",
+						"step": 1,
+						"type": "float"
+					},
+					{
+						"default": 0,
+						"label": "Y",
+						"max": 180,
+						"min": -180,
+						"name": "ay",
+						"step": 1,
+						"type": "float"
+					},
+					{
+						"default": 0,
+						"label": "Z",
+						"max": 180,
+						"min": -180,
+						"name": "az",
+						"step": 1,
+						"type": "float"
+					}
+				]
+			},
+			"type": "shader"
+		},
+		{
+			"name": "sdrhombus_2",
+			"node_position": {
+				"x": -1116.057617,
+				"y": 261.159668
+			},
+			"parameters": {
+				"cx": 0,
+				"cy": 0,
+				"h": 0.29,
+				"r": 0.3,
+				"w": 0.3
+			},
+			"type": "sdrhombus"
+		},
+		{
+			"name": "sdbox",
+			"node_position": {
+				"x": -1119.057617,
+				"y": 401.159668
+			},
+			"parameters": {
+				"cx": 0,
+				"cy": 0,
+				"h": 0.2,
+				"r": 0.3,
+				"w": 0.2
+			},
+			"shader_model": {
+				"code": "vec2 $(name_uv)_d = abs($uv-0.5*vec2($cx+1.0, $cy+1.0))-vec2($w, $h);\n",
+				"global": "",
+				"inputs": [
+
+				],
+				"instance": "",
+				"name": "sdBox",
+				"outputs": [
+					{
+						"sdf2d": "length(max($(name_uv)_d,vec2(0)))+min(max($(name_uv)_d.x,$(name_uv)_d.y),0.0)",
+						"type": "sdf2d"
+					}
+				],
+				"parameters": [
+					{
+						"default": 0.5,
+						"label": "Width",
+						"max": 1,
+						"min": 0,
+						"name": "w",
+						"step": 0.01,
+						"type": "float"
+					},
+					{
+						"default": 1,
+						"label": "Height",
+						"max": 1,
+						"min": 0,
+						"name": "h",
+						"step": 0.01,
+						"type": "float"
+					},
+					{
+						"default": 0,
+						"label": "Center X",
+						"max": 1,
+						"min": -1,
+						"name": "cx",
+						"step": 0.01,
+						"type": "float"
+					},
+					{
+						"default": 0,
+						"label": "Center Y",
+						"max": 1,
+						"min": -1,
+						"name": "cy",
+						"step": 0.01,
+						"type": "float"
+					}
+				]
+			},
+			"type": "shader"
+		},
+		{
+			"name": "sdboolean",
+			"node_position": {
+				"x": -894.057617,
+				"y": 297.159668
+			},
+			"parameters": {
+				"bevel": 0,
+				"cx": 0,
+				"cy": 0,
+				"h": 0.08,
+				"op": 0,
+				"r": 0.3,
+				"w": 0.28
+			},
+			"type": "sdboolean"
+		},
+		{
+			"name": "_4_2_3",
+			"node_position": {
+				"x": -903.047241,
+				"y": 363.697357
+			},
+			"parameters": {
+				"x": 0,
+				"y": 0,
+				"z": 0
+			},
+			"shader_model": {
+				"code": "",
+				"global": "",
+				"inputs": [
+					{
+						"default": "0.0",
+						"label": "",
+						"name": "in",
+						"type": "sdf2d"
+					}
+				],
+				"instance": "",
+				"name": "Translate",
+				"outputs": [
+					{
+						"sdf2d": "$in($uv-vec2($x, $y))",
+						"type": "sdf2d"
+					}
+				],
+				"parameters": [
+					{
+						"default": 0,
+						"label": "X",
+						"max": 1,
+						"min": -1,
+						"name": "x",
+						"step": 0.01,
+						"type": "float"
+					},
+					{
+						"default": 0,
+						"label": "Y",
+						"max": 1,
+						"min": -1,
+						"name": "y",
+						"step": 0.01,
+						"type": "float"
+					}
+				]
+			},
+			"type": "shader"
+		},
+		{
+			"name": "sdf3d_revolution",
+			"node_position": {
+				"x": -714.403931,
+				"y": 295.330994
+			},
+			"parameters": {
+				"a": 0,
+				"d": 0.43,
+				"s": 1,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"shader_model": {
+				"code": "vec2 $(name_uv)_w = vec2($in($uv.xz+vec2(0.5)),abs($uv.y)-$d);\n",
+				"global": "",
+				"inputs": [
+					{
+						"default": "0.0",
+						"label": "",
+						"name": "in",
+						"type": "sdf2d"
+					}
+				],
+				"instance": "",
+				"name": "Extrusion",
+				"outputs": [
+					{
+						"sdf3d": "min(max($(name_uv)_w.x,$(name_uv)_w.y),0.0)+length(max($(name_uv)_w,0.0))",
+						"type": "sdf3d"
+					}
+				],
+				"parameters": [
+					{
+						"default": 0.25,
+						"label": "",
+						"max": 1,
+						"min": 0,
+						"name": "d",
+						"step": 0.01,
+						"type": "float"
+					}
+				]
+			},
+			"type": "shader"
+		},
+		{
+			"name": "raymarching",
+			"node_position": {
+				"x": -522.23468,
+				"y": 348.748474
+			},
+			"parameters": {
+
+			},
+			"type": "raymarching"
+		},
+		{
+			"name": "uniform",
+			"node_position": {
+				"x": -576.760742,
+				"y": 211.755493
+			},
+			"parameters": {
+				"color": {
+					"a": 1,
+					"b": 1,
+					"g": 0.415686,
+					"r": 0,
+					"type": "Color"
+				}
+			},
+			"type": "uniform"
+		}
+	],
+	"parameters": {
+
+	},
+	"type": "graph"
+}

addons/material_maker/graph_edit.gd

@@ -22,6 +22,9 @@ signal graph_changed
 func _ready() -> void:
 	OS.low_processor_usage_mode = true
 	center_view()
+	for t in range(5):
+		add_valid_connection_type(t, 42)
+		add_valid_connection_type(42, t)
 
 func _gui_input(event) -> void:
 	if event is InputEventKey and event.pressed:

addons/material_maker/library.gd

@@ -64,8 +64,10 @@ func get_preview_texture(data : Dictionary) -> ImageTexture:
 			image_path = ProjectSettings.globalize_path(image_path)
 		t = ImageTexture.new()
 		var image : Image = Image.new()
-		image.load(image_path)
-		t.create_from_image(image)
+		if image.load(image_path) == OK:
+			t.create_from_image(image)
+		else:
+			print("Cannot load image "+image_path)
 		return t
 	return null
 

addons/material_maker/library/base.json

@@ -587,30 +587,7 @@
 					"parameters": {
 
 					},
-					"shader_model": {
-						"code": "",
-						"global": "",
-						"inputs": [
-							{
-								"default": "vec4($uv, 0.0, 1.0)",
-								"label": "",
-								"name": "in",
-								"type": "rgba"
-							}
-						],
-						"instance": "",
-						"name": "CircleMap",
-						"outputs": [
-							{
-								"rgba": "$in(vec2(fract(atan($uv.y-0.5, $uv.x-0.5)*0.15915494309), 2.0*length($uv-vec2(0.5))))",
-								"type": "rgba"
-							}
-						],
-						"parameters": [
-
-						]
-					},
-					"type": "shader"
+					"type": "circle_map"
 				},
 				{
 					"name": "gen_parameters",
@@ -723,6 +700,25 @@
 			"tree_item": "Simple/Gradient/Circular",
 			"type": "graph"
 		},
+		{
+			"collapsed": true,
+			"icon": "simple_sdf_sdshow",
+			"name": "sdshow",
+			"parameters": {
+				"bevel": 0.1,
+				"cx": 0,
+				"cy": 0,
+				"h": 0.08,
+				"r": 0.3,
+				"w": 0.28
+			},
+			"tree_item": "Simple/SDF/sdShow",
+			"type": "sdshow"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "Simple/SDF/Shapes"
+		},
 		{
 			"collapsed": true,
 			"icon": "simple_sdf_shapes_sdcircle",
@@ -730,7 +726,7 @@
 			"parameters": {
 				"cx": 0,
 				"cy": 0,
-				"r": 0.25
+				"r": 0.4
 			},
 			"tree_item": "Simple/SDF/Shapes/sdCircle",
 			"type": "sdcircle"
@@ -781,6 +777,26 @@
 			"tree_item": "Simple/SDF/Shapes/sdRhombus",
 			"type": "sdrhombus"
 		},
+		{
+			"collapsed": true,
+			"icon": "simple_sdf_shapes_sdarc",
+			"name": "sdarc",
+			"parameters": {
+				"a1": 0,
+				"a2": 0,
+				"cx": 0,
+				"cy": 0,
+				"r": 0.4,
+				"r1": 0.3,
+				"r2": 0.1
+			},
+			"tree_item": "Simple/SDF/Shapes/sdArc",
+			"type": "sdarc"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "Simple/SDF/Operators"
+		},
 		{
 			"collapsed": true,
 			"icon": "simple_sdf_operators_sdboolean",
@@ -811,65 +827,8 @@
 				"r": 0.3,
 				"w": 0.28
 			},
-			"shader_model": {
-				"code": "",
-				"global": "float sdSmoothUnion( float d1, float d2, float k ) {\n    float h = clamp( 0.5 + 0.5*(d2-d1)/k, 0.0, 1.0 );\n    return mix( d2, d1, h ) - k*h*(1.0-h); }\n\nfloat sdSmoothSubtraction( float d1, float d2, float k ) {\n    float h = clamp( 0.5 - 0.5*(d2+d1)/k, 0.0, 1.0 );\n    return mix( d2, -d1, h ) + k*h*(1.0-h); }\n\nfloat sdSmoothIntersection( float d1, float d2, float k ) {\n    float h = clamp( 0.5 - 0.5*(d2-d1)/k, 0.0, 1.0 );\n    return mix( d2, d1, h ) + k*h*(1.0-h); }\n",
-				"inputs": [
-					{
-						"default": "0.0",
-						"label": "",
-						"name": "in1",
-						"type": "f"
-					},
-					{
-						"default": "0.0",
-						"label": "",
-						"name": "in2",
-						"type": "f"
-					}
-				],
-				"instance": "",
-				"name": "sdSmoothBoolean",
-				"outputs": [
-					{
-						"f": "sdSmooth$op($in1($uv), $in2($uv), $k)",
-						"type": "f"
-					}
-				],
-				"parameters": [
-					{
-						"default": 0,
-						"label": "",
-						"name": "op",
-						"type": "enum",
-						"values": [
-							{
-								"name": "Union",
-								"value": "Union"
-							},
-							{
-								"name": "Subtraction",
-								"value": "Subtraction"
-							},
-							{
-								"name": "Intersection",
-								"value": "Intersection"
-							}
-						]
-					},
-					{
-						"default": 0,
-						"label": "",
-						"max": 1,
-						"min": 0,
-						"name": "k",
-						"step": 0.01,
-						"type": "float"
-					}
-				]
-			},
 			"tree_item": "Simple/SDF/Operators/sdSmoothBoolean",
-			"type": "shader"
+			"type": "sdsmoothboolean"
 		},
 		{
 			"collapsed": true,
@@ -882,7 +841,7 @@
 				"h": 0.08,
 				"k": 0.15,
 				"op": 0,
-				"r": 0.1,
+				"r": 0.2,
 				"w": 0.28
 			},
 			"tree_item": "Simple/SDF/Operators/sdRoundedShape",
@@ -899,57 +858,316 @@
 				"h": 0.08,
 				"k": 0.15,
 				"op": 0,
-				"r": 0.05,
+				"r": 0.1,
 				"w": 0.28
 			},
 			"tree_item": "Simple/SDF/Operators/sdAnnularShape",
 			"type": "sdannularshape"
 		},
+		{
+			"collapsed": false,
+			"tree_item": "Simple/SDF/Transforms"
+		},
 		{
 			"collapsed": true,
-			"icon": "simple_sdf_operators_sdshow",
-			"name": "sdshow",
+			"icon": "simple_sdf_transforms_translate",
+			"name": "sdtranslate",
 			"parameters": {
-				"bevel": 0.1,
+				"x": 0,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "Simple/SDF/Transforms/Translate",
+			"type": "sdtranslate"
+		},
+		{
+			"collapsed": true,
+			"icon": "simple_sdf_transforms_rotate",
+			"name": "sdrotate",
+			"parameters": {
+				"a": 0,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "Simple/SDF/Transforms/Rotate",
+			"type": "sdrotate"
+		},
+		{
+			"collapsed": true,
+			"icon": "simple_sdf_transforms_scale",
+			"name": "sdscale_2",
+			"parameters": {
+				"a": 0,
+				"s": 1,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "Simple/SDF/Transforms/Scale",
+			"type": "sdscale"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "3D"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_render",
+			"name": "raymarching",
+			"parameters": {
+
+			},
+			"tree_item": "3D/SDF/Render",
+			"type": "raymarching"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "3D/SDF/Shapes"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_sphere",
+			"name": "sdf3d_sphere",
+			"parameters": {
+				"r": 0.4
+			},
+			"tree_item": "3D/SDF/Shapes/Sphere",
+			"type": "sdf3d_sphere"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_box",
+			"name": "sdf3d_box",
+			"parameters": {
+				"r": 0.01,
+				"sx": 0.3,
+				"sy": 0.25,
+				"sz": 0.25
+			},
+			"tree_item": "3D/SDF/Shapes/Box",
+			"type": "sdf3d_box"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_cylinder",
+			"name": "sdf3d_cylinder",
+			"parameters": {
+				"l": 0.25,
+				"r": 0.25,
+				"sx": 0.25,
+				"sy": 0.25,
+				"sz": 0.5
+			},
+			"tree_item": "3D/SDF/Shapes/Cylinder",
+			"type": "sdf3d_cylinder"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_capsule",
+			"name": "sdf3d_capsule",
+			"parameters": {
+				"l": 0.3,
+				"r": 0.2,
+				"sx": 0.25,
+				"sy": 0.25,
+				"sz": 0.5
+			},
+			"tree_item": "3D/SDF/Shapes/Capsule",
+			"type": "sdf3d_capsule"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_cone",
+			"name": "sdf3d_cone",
+			"parameters": {
+				"a": 30,
+				"r": 0,
+				"sx": 0.01,
+				"sy": 0.01,
+				"sz": 0.015
+			},
+			"tree_item": "3D/SDF/Shapes/Cone",
+			"type": "sdf3d_cone"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_shapes_torus",
+			"name": "sdf3d_torus",
+			"parameters": {
+				"R": 0.3,
+				"r": 0.15,
+				"sx": 0.1,
+				"sy": 0.1,
+				"sz": 0.02
+			},
+			"tree_item": "3D/SDF/Shapes/Torus",
+			"type": "sdf3d_torus"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "3D/SDF/Operators"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_boolean",
+			"name": "sdf3d_boolean",
+			"parameters": {
+				"bevel": 0,
 				"cx": 0,
 				"cy": 0,
 				"h": 0.08,
+				"op": 0,
 				"r": 0.3,
 				"w": 0.28
 			},
-			"shader_model": {
-				"code": "",
-				"global": "",
-				"inputs": [
-					{
-						"default": "0.0",
-						"label": "",
-						"name": "in",
-						"type": "f"
-					}
-				],
-				"instance": "",
-				"name": "sdShow",
-				"outputs": [
-					{
-						"f": "clamp(-$in($uv)/max($bevel, 0.00001), 0.0, 1.0)",
-						"type": "f"
-					}
-				],
-				"parameters": [
-					{
-						"default": 0,
-						"label": "Bevel",
-						"max": 1,
-						"min": 0,
-						"name": "bevel",
-						"step": 0.01,
-						"type": "float"
-					}
-				]
+			"tree_item": "3D/SDF/Operators/Boolean",
+			"type": "sdf3d_boolean"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_smoothboolean",
+			"name": "sdf3d_smoothboolean",
+			"parameters": {
+				"bevel": 0,
+				"cx": 0,
+				"cy": 0,
+				"h": 0.08,
+				"k": 0.15,
+				"op": 0,
+				"r": 0.3,
+				"w": 0.28
 			},
-			"tree_item": "Simple/SDF/Operators/sdShow",
-			"type": "shader"
+			"tree_item": "3D/SDF/Operators/SmoothBoolean",
+			"type": "sdf3d_smoothboolean"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_rounded",
+			"name": "sdf3d_rounded",
+			"parameters": {
+				"bevel": 0,
+				"cx": 0,
+				"cy": 0,
+				"h": 0.08,
+				"k": 0.15,
+				"op": 0,
+				"r": 0.15,
+				"w": 0.28
+			},
+			"tree_item": "3D/SDF/Operators/Rounded",
+			"type": "sdf3d_rounded"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_repeat",
+			"name": "sdf3d_repeat",
+			"parameters": {
+				"a": 0,
+				"r": 0.3,
+				"rx": 3,
+				"ry": 3,
+				"s": 0.3,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Operators/Repeat",
+			"type": "sdf3d_repeat"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_circlerepeat",
+			"name": "sdf3d_circle_repeat",
+			"parameters": {
+				"a": 0,
+				"c": 5,
+				"r": 0.24,
+				"rx": 4,
+				"ry": 4,
+				"s": 0.3,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Operators/CircleRepeat",
+			"type": "sdf3d_circle_repeat"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_extrusion",
+			"name": "sdf3d_extrusion",
+			"parameters": {
+				"a": 0,
+				"d": 0.3,
+				"s": 1,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Operators/Extrusion",
+			"type": "sdf3d_extrusion"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_operators_revolution",
+			"name": "sdf3d_revolution",
+			"parameters": {
+				"a": 0,
+				"d": 0.25,
+				"s": 1,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Operators/Revolution",
+			"type": "sdf3d_revolution"
+		},
+		{
+			"collapsed": false,
+			"tree_item": "3D/SDF/Transforms"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_transforms_translate",
+			"name": "sdf3d_translate_3_2",
+			"parameters": {
+				"x": 0,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Transforms/Translate",
+			"type": "sdf3d_translate"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_transforms_scale",
+			"name": "sdf3d_scale_2",
+			"parameters": {
+				"a": 0,
+				"s": 1,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Transforms/Scale",
+			"type": "sdf3d_scale"
+		},
+		{
+			"collapsed": true,
+			"icon": "3d_sdf_transforms_rotate",
+			"name": "sdf3d_rotate_2",
+			"parameters": {
+				"a": 0,
+				"ax": 0,
+				"ay": 0,
+				"az": 0,
+				"x": 0.35,
+				"y": 0,
+				"z": 0
+			},
+			"tree_item": "3D/SDF/Transforms/Rotate",
+			"type": "sdf3d_rotate"
 		},
 		{
 			"collapsed": false,
@@ -1130,7 +1348,7 @@
 			],
 			"icon": "pattern_fibers",
 			"label": "Fibers",
-			"name": "graph",
+			"name": "graph_4",
 			"nodes": [
 				{
 					"name": "transform",
@@ -1140,7 +1358,7 @@
 					},
 					"parameters": {
 						"repeat": true,
-						"rotate": 45,
+						"rotate": 30.125,
 						"scale_x": 0.5,
 						"scale_y": 1,
 						"translate_x": 0.975,
@@ -1156,6 +1374,7 @@
 					},
 					"parameters": {
 						"gradient": {
+							"interpolation": 1,
 							"points": [
 								{
 									"a": 1,
@@ -1186,9 +1405,11 @@
 					"parameters": {
 						"bevel": 0.1,
 						"columns": 4,
+						"corner": 0,
 						"mortar": 0.1,
 						"pattern": 0,
 						"repeat": 1,
+						"round": 0,
 						"row_offset": 0.5,
 						"rows": 1
 					},
@@ -1239,8 +1460,8 @@
 				{
 					"name": "gen_parameters",
 					"node_position": {
-						"x": -433.557495,
-						"y": -236.5
+						"x": -429.557495,
+						"y": -266.5
 					},
 					"parameters": {
 						"param0": 4
@@ -1322,6 +1543,17 @@
 			"tree_item": "Pattern/Scratches",
 			"type": "scratches"
 		},
+		{
+			"collapsed": true,
+			"icon": "pattern_beehive",
+			"name": "beehive",
+			"parameters": {
+				"sx": 4,
+				"sy": 4
+			},
+			"tree_item": "Pattern/Beehive",
+			"type": "beehive"
+		},
 		{
 			"collapsed": false,
 			"icon": "noise",