Save Texture

totoro

Hi, I can create an image, set it to a TextureRect, appear to draw on it, and then save it, but no line drawing? Thankyou


	var fn = "poo.png"
	
	#var obj = TextureRect.new()
	
	var colorBG = Color(0.8, 0.8, 0.8, 1.0)	#	RGBA
	var color = Color(1.0, 0.0, 0.0, 1.0)	#	RGBA
	var img_width = 100
	var img_height = 100
	var img = Image.new()
	img.create(img_width, img_height, false, Image.FORMAT_RGBA8)
	
	img.fill(colorBG)
	img.lock()
	img.set_pixel(50, 50, color) # Works
	img.unlock()
	
	var texture = ImageTexture.new()
	texture.create_from_image(img)
	
	obj.texture = texture
	
	obj.draw_line(Vector2(1,1), Vector2(50, -50), Color(255, 0, 0), 5)
	
	#var img2 = texture.get_data()
	var img2 = obj.texture.get_data()
	var err = img2.save_png(fn)
	if err != OK:
		print("Error saving image")

cybereality

I believe the easiest way is to save the whole viewport. See this page for some help. https://godotengine.org/qa/64896/drawing-and-then-saving-a-png-file

TwistedTwigleg

Like @cybereality said, the easiest way to do this is by saving the rendered node via a Viewport.

The draw functions do not draw onto the texture itself, they execute draw commands. When you assign a texture to either a Sprite, TextureRect, or other built-in Godot node, it internally calls draw_texture and renders the texture assigned to it in the texture property. Then when you call any draw function it executes the draw command on top of the draw_texture already called.

If you want to save the results of calling draw functions, a Viewport is probably the best way to go about it. You could also draw the line on the texture itself by manually setting the pixels, though it would be a bit more involved.

totoro

:o ooooooooooooooooooooooooooooooooooooooooooooooooooooh arr that be brilliant, thanking yous kindly I does =)

I did need to skill up on the viewport node before I made that sound...

Viewport Node | Godot Basics Tutorial | Ep 42

totoro

@TwistedTwigleg said: If you want to save the results of calling draw functions, a Viewport is probably the best way to go about it. You could also draw the line on the texture itself by manually setting the pixels, though it would be a bit more involved.

The Line2D works...