Transparency Problem With Viewport Texture

[surreal dagger]

Hello everyone, I want to make the output of a script attached to my control node visible without any background, however I get the clear color as the background. The control node is the child of a subviewport and I use the subviewport texture to render the output to a plane. I've already tried the flag "transparent bg" in the subviewport but it renders completely black if I do that. Does anyone have any ideas on how to fix this?

[river timber]

Maybe change this

Clear color

To be transparent

[surreal dagger]

Thanks I'll try that but I thought that there would be an alternative way to control the background from the nodes in the scene

[river timber]

You`re welcome

[surreal dagger]

when I tried this it still shows the color instead of being transparent unfortunately

[river timber]

Can you please show me a screenshot of the issue

[surreal dagger]

right now it's showing this but I want to only show the graph and make the background transparent

the graph is the output of a script attached to the control node

[river timber]

So the part that`s grey, its supposed to be transparent in that part?

[surreal dagger]

yes

[river timber]

So you would see your desktop through the program

?

[surreal dagger]

so that it looks like the graph is floating in 3d space

[river timber]

Maybe this will help:
https://forum.godotengine.org/t/transparent-background-so-that-desktop-is-visible/23124

[surreal dagger]

I appreciate the help a lot but I don't think that's what I'm looking for. Here is the full picture of how it looks in game right now. I would like to make the grey part transparent to get the float effect but not actually make what I'm doing in the computer outside of the game visible

[river timber]

Ohhhh

What object has the graph on it

Like what is it called

[surreal dagger]

the control node

called control in the screenshot

[river timber]

Maybe try looking in the inspector

For a transparency setting

[surreal dagger]

yes I tried that I enabled transparent background here in the viewport

[river timber]

No, on the control node

[surreal dagger]

I'm sorry but I don't see the setting here

[river timber]

Wait, no, on the mesh

The mesh is the grey block right?

With the graph on it

[surreal dagger]

the mesh has the viewport texture yes

[river timber]

Try looking for a transparency setting there

[surreal dagger]

hmmm there is a transparency setting but when I turn it completely to 1 it's invisible

[river timber]

So if you put the transparenncy to 1 the graph dissapears too?

[surreal dagger]

I can't see the background or the graph

yes

[river timber]

Alright

Does the graph texture have a grey background?

Like, in the part of the editor that says filesystem

Bottom left by default

[surreal dagger]

I don't save the graph as a texture it's calculated when I hit play

and it's drawn with the draw function

it's supposed to continually change in the game

[river timber]

I think that the graph might be inheriting the transparency of the mesh

Is the thing being drawn on the mesg

Is the graph drawn on the mesh

[surreal dagger]

you can have the full script here:

extends Control

var num_nodes: int = 5 # Default number of nodes
var node_positions: Array = []
var connections: Array = []

func _ready():
_generate_graph()
queue_redraw() # Request a redraw

func _generate_graph():
# Generate positions for nodes in a circle layout
node_positions.clear()
connections.clear()
var radius = min(size.x, size.y) * 0.4 # Adjust as needed
var center = Vector2(size.x / 2, size.y / 2)
for i in range(num_nodes):
var angle = i * TAU / num_nodes
var position = center + Vector2(cos(angle), sin(angle)) * radius
node_positions.append(position)
# Generate connections (edges) between nodes (e.g., connecting each node to the next)
for i in range(num_nodes):
connections.append([i, (i + 1) % num_nodes]) # Creates a circular graph

func _draw():
# Draw connections
for conn in connections:
var from_pos = node_positions[conn[0]]
var to_pos = node_positions[conn[1]]
draw_line(from_pos, to_pos, Color.BLACK, 2)
# Draw nodes
for pos in node_positions:
draw_circle(pos, 10, Color.BLACK)

func set_num_nodes(n):
num_nodes = n
_generate_graph()
queue_redraw()

it's not drawn on the mesh it's attached to the control node

[river timber]

I think that because the mesh is transparent, it makes the subViewport inherit that, and then its passed down to the Control, making the graph invisible

Do you see any things on the control node about visibility?

[surreal dagger]

these are the settings I see

I've just tried using top level and transparent bg in wiewport together I got my hopes up but it didn't work...

[river timber]

Maybe put show behind parent on the mesh

Wait, why does the mesh even exist

Isnt that what`s making the grey square

[surreal dagger]

the mesh is supposed to display the viewport texture

the albedo is set to viewport texture

the mesh is the default godot plane and it's supposed to be white by default

so my guess is that it's the viewport

[river timber]

What happens if you make the subviewport a child of the node3d and remove the mesh

[surreal dagger]

let's see

it disappears

[river timber]

What if you make the control a child of the node3d and get rid of the subviewport

[surreal dagger]

but the way it's being rendered in the mesh is as a subviewporttexture here

[river timber]

Wait

Cant you just make that material transparent

Texture

Whatever

[surreal dagger]

yes but then the graph can't appear

[river timber]

No like the texture

It looks grey

Cant you make that texture transparent

[surreal dagger]

it looks grey but the only thing I can do is set the subviewport node there