pandemonium_demo_projects/viewport/screen_capture/screen_capture.gd

extends Node

onready var captured_image = $CapturedImage

func _on_CaptureButton_pressed():
	get_viewport().set_clear_mode(Viewport.CLEAR_MODE_ONLY_NEXT_FRAME)
	# Wait until the frame has finished before getting the texture.
	yield(RenderingServer, "frame_post_draw")

	# Retrieve the captured image.
	var img = get_viewport().get_texture().get_data()

	# Flip it on the y-axis (because it's flipped).
	img.flip_y()

	# Create a texture for it.
	var tex = ImageTexture.new()
	tex.create_from_image(img)

	# Set the texture to the captured image node.
	captured_image.set_texture(tex)