Combine smaller Sprite2D or Images into one big Sprite2D/Image

In my case nothing seems to work,
nothing is drawn on screen, only an error on the debugger

E 0:00:01:0001 blit_not_working.gd:11 @ _ready(): It's not a reference to a valid Image object.

extends Node2D

var texture2
var image1 = preload("res://imgTest1.png")
var image2 = preload("res://imgTest2.png")

func _ready():
	var img = Image.create(200, 200, false, Image.FORMAT_RGBA8 )
	img.blend_rect(image1, Rect2i(Vector2i.ZERO, image1.get_size()), Vector2(10, 10) )
	texture2 = ImageTexture.create_from_image(img)

func _process(_delta):
	queue_redraw();

func _draw():
	draw_texture(texture2, get_global_mouse_position() )

Iam using Godot_v4.2.1, had to delete a bunch of code...
I though "blit_rect" was the one that combined images into 1 ? But still i cant understand how this is supossed to work... Is an image being created, then sprites are blit/blend into that image... Why isnt it writen on the manual i can even get 1 to work, blit/blend is massive pile of st

jonSS blit/blend is massive pile of st

It isn't. You just don't understand how it works.

I think the main problem is that you're not aware that Image object and Texture object are two different things. The former represents pixel data residing in CPU address space (RAM), where CPU can manipulate pixels, including blitting, while the latter represents pixels in the GPU address space (video RAM) where they're used for drawing onto the screen by the GPU but can't really be manipulated directly by the CPU. The data transfer between the two is always done by copying (duplicating), not by reference. So if you pull some pixels from a Texture object into an Image object (via Texture2D::get_image() for example), then let the CPU intervene on that data (e. g. blit something into it), in order for this data to be shown on the screeen, a new Texture object must be created/initialized from this data.

The error above is caused by your code trying to use a Texture object returned by the loading function as if it was an Image object. If you want to load a bitmap resource as an Image object you need to specify that in resource's import options. Otherwise it will default to import it as a Texture object, i.e. it goes straight into video RAM for drawing.

jonSS @Toxe posted working example of exactly what you're asking for, even put the thing on github.

jonSS You keep arguing, and deviating into other subjects, but you are the one that doesnt trow any examples.

This is a discussion forum, not example throwing forum. No one is entitled to getting code gifts here and you won't solicit any by being arrogant. All things I mentioned are relevant for the problem you have.

Toxe What I don't really understand is why you want to draw the image/texture yourself in _draw()? Why not just create a sprite, drop it into the scene and be done with it, like in my code snippet above? That way you don't need to worry about anything like (re)drawing and the engine handles everything for you.

The OP is working on a sort of a custom tilemap plugin with the idea to implement pre process effects like blur on whole tile layers. Imho, judging from the several questions asked so far, they're approaching the whole thing in a bit of a misguided way, and also trying to bite off more than they can chew with their current level of technical knowledge. So it's all bound to periodically get stuck with an odd xy problem like this one. I tried to point this out on several occasions, but they're being stubborn Which is ok as long as one is ready to invest some of that stubborn persistency into learning how things actually work.

I have it working... dont know for witch reason it started to work now ? i though it was a problem with godot v4.2.1

extends Sprite2D

var absRect = Rect2(0, 0, 32*3, 32*3 );
var absRect2 = Rect2(32*5, 32*5, 32*3, 32*3 );
var texture1;

func _ready() -> void:
	
	var img1 = ImageTexture.create_from_image(texture.get_image().get_region( absRect ) );
	var img2 = ImageTexture.create_from_image(texture.get_image().get_region( absRect2 ) );
	
	var format = img1.get_image().get_format()
	var image1 = Image.create(500, 500, false, format)
	
	image1.blend_rect(img1.get_image(), Rect2(Vector2(0, 0), Vector2(32*4, 32*4) ), Vector2(0, 0) );
	image1.blend_rect(img2.get_image(), Rect2(Vector2(0, 0), Vector2(32*4, 32*4) ), Vector2(100, 0) );
	texture1 = ImageTexture.create_from_image(image1);


func _process(_delta: float) -> void:
	queue_redraw();
	

func _draw() -> void:
	draw_texture(texture1, get_global_mouse_position() );

xyz they're approaching the whole thing in a bit of a misguided way

xyz I dont identify myself has "they", she's, or it. Iam just one guy making a tilemap, i dont have a team on my back

jonSS I dont identify myself has "they", she's, or it. Iam just one guy making a tilemap, i dont have a team on my back

I don't give a rat's ass about how you "identify yourself". I used "they" as a neutral pronoun in the sense described under 3 in the dictionary here. Not sure why you're even bringing this up.

Good to hear you finally got something working though. Hopefully it'll be applicable for what you're ultimately aiming for. Although I do sense more trouble coming up along the way

This thread is getting psychoactive

@jonSS You haven't even thanked @Toxe for providing a working example, but instead went on barking at me for not doing so. I'm a lazy ignorant bastard and I code only for money. So no tactic other than cash will work to get something copypasteable from me.

Kids these days

xyz what ?
I dont think @Toxe felt offendend ? but now that you mentioned "i didnt tanked him" theres a chance hes going to be...

I wasnt barking at you. If you saw the kind of krap i take for doing stuff for free. Compared to this is nothing.
I was just trying to speed this up and avoid the inevitable in getting stuck on 1 function, that could take 5 to 10min, instead i got stuck for 2 days on "blit" has its already common

xyz Kids these days

Iam problably already much older than you.

jonSS I dont think @Toxe felt offendend ?

It doesn't matter how he felt. Saying "thanks" to someone that put some effort in to help you is a part of the civilized etiquette. Why do I even have to point this out? Remember that you're interacting with actual people here, not with code generating chatbots.

jonSS Iam problably already much older than you.

Ya think? Your behavior would suggest otherwise.

Look, are you here to solve problems and learn something or to engage in pointless arguments over inconsequential things? If former is the case, don't act like a spoiled brat entitled to having their code written for them. Be grateful that people are even trying to help you in any way. Cultivate patience, focus and receptiveness to new knowledge and you'll reap great benefits in discussions here as well as in your overall coding endeavors. Otherwise, you're wasting everyone's time, especially your own.