Create an Image (and fill it) in C++

Help
,
1

Godot Version

4.4.1

Question

Trying to create a GDExtension extending TextureRect, I realized I was not even able to create a dummy red image using C++.

What I would like to reproduce (GDScript):

var image = Image.create(640, 360, false, Image.FORMAT_RGBA8)
image.fill(Color(1, 0, 0, 1))

print("img format: ",img.get_format())
print("img width: ",img.get_width())
print("img height: ",img.get_height())

Ouput:

img format: 5
img width: 100
img height: 100

My best guess so far to do the same thing in C++:

Ref<Image> img;
img.instantiate();

if (! img.is_null()) {
    UtilityFunctions::print("Image instantiation OK");
}

img->create(640, 360, false, Image::FORMAT_RGBA8);

img->fill(Color(1.0, 0.0, 0.0, 1.0));  // RGBA

UtilityFunctions::print("img format: ", Variant(img->get_format()));
UtilityFunctions::print("img width: ", Variant(img->get_width()));
UtilityFunctions::print("img height: ", Variant(img->get_height()));

It compiles, runs without error, but fails to create the image:

Image instantiation OK
img format: 0
img width: 0
img height: 0

Is it a bug in Godot 4.4.1 or is it me that don’t use it correctly ?

2

OK, so a solution is:

Ref<Image> img;
img = img->create(640, 360, false, Image::FORMAT_RGBA8);
img.fill(Color(1.0, 0.0, 0.0, 1.0));  // RGBA

Actually img->create() doesn’t edit the image but returns a new one.

Solved !