Parameters used to set the transmission (f32) and thickness (f32) values
OptionaltransmissionTexture?: ShaderTextureDescriptorTransmission texture descriptor to use if any.
OptionalthicknessTexture?: ShaderTextureDescriptorThickness texture descriptor to use if any.
transmission (f32) and thickness (f32) values set.
Set the
transmission(f32) andthickness(f32) values from the material variables and eventual textures.