Creating an image from nodes using a Viewport

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:bust_in_silhouette: Asked By pento

So I’m trying to do what’s suggested here and here:
how-to-save-node-and-children-to-png, how-to-crop-screenshots-around-a-node

Now, I don’t know if I just don’t understand what they’re saying to do, but I’m getting a blank image with my code below. (To summarize, I am just duplicating the parent node of the composite image I want to save and chucking that in an otherwise empty Viewport node. I get the image_node and viewport nodes much earlier in the code.)

var j = image_node.duplicate()

var img = viewport.get_texture().get_data()

var buf = img.save_png_to_buffer()


With the node structure:
------------ …
------------ …

I’ve also tried fully moving the node into the Viewport node in the script, not making a duplicate, and then moving it back when I was done, but I also got a blank image from this.

(I checked to see that if I add it as a child node manually, the preview in the GUI will show the composite image (and it does), but I’d prefer to not leave my image_node in the Viewport node if I can help it, since it would break a lot to move it.)

Am I just fundamentally misunderstanding the solutions in those other answers? Any help would be massively appreciated!

FYI I did give up on this. I ended up just get/set pixeling all of the visible nodes onto a fresh image.

pento | 2022-07-04 02:45