Transparency with mesh instancing?

[Semihazah]

I'm using the instancing example here https://github.com/bevyengine/bevy/blob/main/examples/shader/shader_instancing.rs.
Setting the alpha value in the shader does nothing, so I suspect I need to change something about the pipeline, but I don't know what.

[insberr]

I am also having this issue. I also want shadows to work. If anyone knows how to make the alpha and shadows work that would be great!

[gorynich2048]

You need to enable alpha blending.
Add this line in the specialize function:

descriptor.fragment.as_mut().unwrap().targets[0].as_mut().unwrap().blend = Some(BlendState::ALPHA_BLENDING);

Or add MeshPipelineKey::BLEND_ALPHA to the pipeline's key.