Migration Notes Godot 2 => Godot 3

Migration.md

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According to godotengine/godot#15374 (comment)

create or create_from_data() must be called after Image.new()

2.1 :

var img = Image.new()
img.lock()
img.set_pixel(x, y, color) # Works
img.unlock()

3.0

var img = Image.new()
img.create(1, 1, false, Image.FORMAT_RGBA8)
img.lock()
img.set_pixel(x, y, color) # Works
img.unlock()