belshamo it's currently not a supported use case to load from file resources at runtime.

Your proposed changes look good. I did not yet get to incorporating your changes. I hope to be able to find time tomorrow.

Not for the upcoming Spine 4.2 release which we'll likely publish this week. However, if you folks can send a PR, I can see if I can get it into the next patch release. It will need quite some testing on my end, as it does modify a crucial code path.

belshamo
forum

I encountered the same issue. Could you please provide guidance on how to load a texture but only for Godot version 3.5.3, as the necessary methods are not present in the Godot *.cpp files?

Ref<Image> image=Image::load_from_file(fixed_path);
texture = ImageTexture::create_from_image(image);

I have figured out the image loading part, now I just need to turn it into a texture.

old:
Ref<Image> image=Image::load_from_file(fixed_path);

new:

Ref<Image> image;
image.instance();
ImageLoader::load_image(fixed_path, image);

I was able to make a similar modification for version 3.5.3, and it works!!

const String prefix = "res:/";
auto i = fixed_path.find(prefix);
Ref<ImageTexture> texture; 
if (i < 0) {
	Ref<Image> image;
	image.instance();
	image->load(fixed_path);
	
	texture.instance();
	texture->create_from_image(image);
} else {
	texture = ResourceLoader::load(fixed_path, "", false, &error);
}

Fix:

const String prefix = "res:/";
auto i = fixed_path.find(prefix);
 
Ref<Texture> texture;
if (i < 0) {
	Ref<Image> image;
	image.instance();
	image->load(fixed_path);
	
	Ref<ImageTexture> image_texture;
	image_texture.instance();
	image_texture->create_from_image(image);
	texture = image_texture;
} else {
	texture = ResourceLoader::load(fixed_path, "", false, &error);
}

Fix GDScript for Godot 3.x

extends Node
class_name SpineSpriteFileLoader

const known_atlasses = {}
const known_skeletons = {}

static func _load_spine_atlas(atlas_path:String) -> SpineAtlasResource:
	var atlas_res:SpineAtlasResource = null
	if known_atlasses.has(atlas_path) and known_atlasses[atlas_path].get_ref() != null:
		atlas_res = known_atlasses[atlas_path].get_ref()
	else:
		atlas_res = SpineAtlasResource.new()
		var error = atlas_res.load_from_atlas_file(atlas_path)
		if error != OK:
			printerr("Failure loading atlas@"+atlas_path,error)
		known_atlasses[atlas_path] = weakref(atlas_res)
	return atlas_res


static func _load_spine_skeleton(skeleton_json_path:String) -> SpineSkeletonFileResource:
	var skeleton_file_res:SpineSkeletonFileResource = null
	if known_skeletons.has(skeleton_json_path) and known_skeletons[skeleton_json_path].get_ref() != null:
		skeleton_file_res = known_skeletons[skeleton_json_path].get_ref()
	else:
		skeleton_file_res = SpineSkeletonFileResource.new()
		var error = skeleton_file_res.load_from_file(skeleton_json_path)
		if error != OK:
			printerr("Failure loading json-spine! ",error)
		known_skeletons[skeleton_json_path] = weakref(skeleton_file_res)
	return skeleton_file_res


static func load_spine_sprite(atlas_path:String, skeletonm_json_path:String) -> SpineSprite:
	var atlas_res:SpineAtlasResource = _load_spine_atlas(atlas_path)
	var skeleton_file_res:SpineSkeletonFileResource=_load_spine_skeleton(skeletonm_json_path)

	var skeleton_data_res:SpineSkeletonDataResource = SpineSkeletonDataResource.new()
	skeleton_data_res.skeleton_file_res = skeleton_file_res
	skeleton_data_res.atlas_res = atlas_res
	
	var sprite:SpineSprite = SpineSprite.new()
	sprite.skeleton_data_res = skeleton_data_res
	return sprite

Thanks for the investigation. I'll be adding both of your suggestions to our build this week.

No need for a pull request, I'll manage to do it without one.

@belshamo @Mario

I've noticed some strange behavior, most likely it's an error that needs to be fixed, but unfortunately, I haven't been able to find a solution for it. I'm writing about it in this thread because it's related to it. If we have a scene with a spine object that was loaded from the file system rather than from the game's resources, then upon reloading, the spine object will be empty. If you have a quick solution for this, I would greatly appreciate it.

I'm afraid I do not have a quick solution. Can you please provide me with an example project to reproduce the issue? Just a scene + gdscript + assets would do.