Is there any way to get about shadow info?

Help
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1

Godot Version

4.0

Question

I want to compare the similarity between the shadow cast by a light node onto a 3D object and a pre-determined image. However, I’m unsure how to obtain information about the shadow cast on the MashInstance3D node.

Is there a way to retrieve the shadow map created by the light node or obtain information about the shadow cast on the MashInstance3D node?

2

Shadows are computed on the GPU, so they can’t be read back on the CPU without causing a pipeline stall (which greatly slows down rendering).

It would be possible to expose a way to get this information with a delay of 2-3 frames without causing a pipeline stall, but this isn’t currently implemented.