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https://github.com/Relintai/texture_packer

A c++ Godot engine module, to layer, pack, and merge textures at runtime.
https://github.com/Relintai/texture_packer

atlases bake-textures godot-engine merge texture-packer texturepacker textures

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A c++ Godot engine module, to layer, pack, and merge textures at runtime.

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# Texture Packer for the Godot Engine



This is a texture packer engine module, for the Godot Engine.



It can create texture atlases for you even in the running game.



It uses the legacy version of [rectpack2D](https://github.com/TeamHypersomnia/rectpack2D/tree/legacy)



It should work on all platforms.



# Building



Build Godot. [Tutorial](https://docs.godotengine.org/en/latest/development/compiling/index.html)



# Features and Usage



## TexturePacker



This is the class that can merge textures. Add every texture you want into it using it's API (add_texture()), and then call merge().



add_texture() will return an AtlasTexture, this is the texture you want to use in your classes. It is immediately usable, it will just contain the original texture. Calling merge() will change it, to point to the new (merged) texture.



Supports filters, custom background color, margins.



### The keep_original_atlases option:



If you set this to true, and then add AtlasTextures, TexturePacker will change these ones (the ones you actually added)

after the bake.



You can use this to bake gui textures together, without changing the resources everywhere at runtime.

Think of rpgs, when you have a huge number of potential icons that the player can put on his or her actionbars.

You can take look at Tales of Maj'Eyal or pretty much every actually complex MMORPGs as an example.



Note: Doing something like this in only recommended, if you can't pre-make the atlases (or it's really unfeasible), you are better off

making the atlases yourself during development.



## TextureMerger



A Node that can bake textures for you. It uses TexturePacker internally.



It has an exposed Array, so you can assign textures to it in the editor.



## PackerImageResource



This is a simple Texture, which just contains an imported Image. It has no logic for drawing.



Useful for textures you only need for baking, as this class will not register it's data into the VisualServer.



The module also contains an editor plugin which can import textures as `PackerImageResource` Resource.



To access it, click on a texture, switch to the import tab, and in the "Import As" Dropdown, select "Packer Image Recource".



## TextureLayerMerger



This class can merge together textures as layers. Useful for example to merge together (and color) skin, and clothes for a character.



It can handle both AtlasTextures and normal Textures.



Add the layers from bottom to top with the add_texture() method, when you added everything call merge().



You can set the resulting image's size with the `width`, and `height` properties. If you leave them at 0, they will

change to the first added texture's size.



add_texture looks like this:



```

void add_texture(Ref p_texture, Color p_color = Color(1, 1, 1, 1), Vector2 p_position = Vector2(), Rect2 p_rect = Rect2());

```



The color parameter will color the given texture on merge().

With the position parameter you can offset your texture (in the resulted texture), and with the rect parameter, you can crop it.



There are setters to manipulate the added data later.



After the merge, you can either use `get_result_as_texture()` (it creates an ImageTexture on the fly), or the `data` property to

grab the resulting Image.