PointLight2D don't animate AnimatedTexture

[BurningBeard24]

Godot version

Godot Engine v4.0.beta3.official.01ae26d31

System information

Xubuntu 22.04, Vulkan API 1.2.0 - Using Vulkan Device #0: NVIDIA - NVIDIA GeForce GTX 1060 6GB

Issue description

If I use a AnimatedTexture resource for a PointLight2D it only shows the first frame of the animation.
The same AnimatedTexture on a Sprite2D works.

Steps to reproduce

1. create a AnimatedTexture
2. set this AnimatedTexture as texture of a PointLight2D

Minimal reproduction project

No response

[Calinou]

Related to #54506.

[clayjohn]

I'm not sure supporting animated textures in PointLight2Ds is a good idea. In 4.0 2D lighting is done in a single pass which means that all light textures have to be copied to an atlas. Supporting animated textures would require either:

1. updating the atlas every single frame by blitting the animated texture to it or,
2. copying every frame of the animated texture into the atlas and then animating the rect of the PointLight2D.

Both options will be harmful for performance. I think number 2 may not be terrible, but I guess it depends on how big the AnimatedTexture is and how many frames it contains.

[AThousandShips]

Closing in favor of:

• Allow dynamic textures for PointLight2D godot-proposals#9855

Thank you for reporting