Why GetBillBoardMatrix node is not working in visual shader

Help
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1

Godot Version

<v4.2.2.stable.official [15073afe3]>

Question

I am creating a custom shader using the visual shader, but I have encountered an issue.
To apply the billboard feature, I connected GetBillboardMatrix to the Model View Matrix output as shown in the picture.
However, the billboard feature does not work at all.
On the other hand, the billboard feature in StandardMaterial works well.

I would like to know why this is happening.

billboard
billboard1239×695 176 KB

2

I have identified the cause. The “World Vertex Coords” flag was enabled in the shader, which prevented the Billboard from working.

However, is there a way to implement the Billboard functionality with this option enabled?

“World Vertex Coords” is an essential option for me, so I cannot disable it.